diff --git a/variants/ARMED_V1/PeripheralPins.c b/variants/ARMED_V1/PeripheralPins.c
index e2771ea60d..4b28dafd42 100644
--- a/variants/ARMED_V1/PeripheralPins.c
+++ b/variants/ARMED_V1/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   //  {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0 - User Blue button
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0 - User Blue button
   //  {PA_0,  ADC3,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC3_IN0 - User Blue button
@@ -88,7 +88,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   //  {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1 - I2S3_WS
   //  {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,   NP,    0}
@@ -98,7 +98,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   //  {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // Audio_SDA
   //  {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
@@ -108,7 +108,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   //  {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   //  {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // Audio_SCL
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -120,7 +120,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -196,7 +196,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   //  {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, // User Blue button
   //  {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB
@@ -213,7 +213,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB
@@ -230,7 +230,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   //  {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB
   //  {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -241,7 +241,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   //  {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // User Blue button
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB
   //  {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -254,7 +254,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // MEMS
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -266,7 +266,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // MEMS
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -278,7 +278,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // MEMS
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // T_SWO
   //  {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)}, // T_SWO
@@ -290,7 +290,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   //  {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // I2S3_WS
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)}, // I2S3_WS
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -304,7 +304,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   //  {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // USB
   //  {PB_5,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   //  {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -315,7 +315,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   //  {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // USB
   //  {PB_6,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)}, // Audio_SCL
   //  {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // Audio_SDA
@@ -328,7 +328,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** ETHERNET ***
 
 #ifdef HAL_ETH_MODULE_ENABLED
-const PinMap PinMap_Ethernet[] = {
+WEAK const PinMap PinMap_Ethernet[] = {
   {PA_0,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_CRS
   {PA_1,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_REF_CLK|ETH_RX_CLK
   {PA_2,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_MDIO
@@ -357,7 +357,7 @@ const PinMap PinMap_Ethernet[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
@@ -368,7 +368,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
 #ifdef USE_USB_HS_IN_FS
   {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_SOF
   {PB_12, USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_ID
diff --git a/variants/BLACK_F407XX/PeripheralPins.c b/variants/BLACK_F407XX/PeripheralPins.c
index 34497f3c7c..334af7cc0d 100644
--- a/variants/BLACK_F407XX/PeripheralPins.c
+++ b/variants/BLACK_F407XX/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   //  {PA_0,  ADC3,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC3_IN0
@@ -100,7 +100,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -110,7 +110,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
@@ -123,7 +123,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -138,7 +138,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -173,26 +173,26 @@ const PinMap PinMap_PWM[] = {
   {PB_5,  TIM3,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 2, 0)}, // TIM3_CH2
   {PB_6,  TIM4,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 1, 0)}, // TIM4_CH1
   {PB_7,  TIM4,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 2, 0)}, // TIM4_CH2
-  {PB_8,  TIM4,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 3, 0)}, // TIM4_CH3
+  //  {PB_8,  TIM4,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 3, 0)}, // TIM4_CH3
   {PB_8,  TIM10,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM10, 1, 0)}, // TIM10_CH1
-  {PB_9,  TIM4,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 4, 0)}, // TIM4_CH4
+  //  {PB_9,  TIM4,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 4, 0)}, // TIM4_CH4
   {PB_9,  TIM11,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM11, 1, 0)}, // TIM11_CH1
   {PB_10, TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 3, 0)}, // TIM2_CH3
   {PB_11, TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 4, 0)}, // TIM2_CH4
   {PB_13, TIM1,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 1, 1)}, // TIM1_CH1N
-  {PB_14, TIM1,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 2, 1)}, // TIM1_CH2N
-  {PB_14, TIM8,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM8, 2, 1)}, // TIM8_CH2N
+  //  {PB_14, TIM1,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 2, 1)}, // TIM1_CH2N
+  //  {PB_14, TIM8,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM8, 2, 1)}, // TIM8_CH2N
   {PB_14, TIM12,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM12, 1, 0)}, // TIM12_CH1
-  {PB_15, TIM1,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 3, 1)}, // TIM1_CH3N
-  {PB_15, TIM8,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM8, 3, 1)}, // TIM8_CH3N
+  //  {PB_15, TIM1,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 3, 1)}, // TIM1_CH3N
+  //  {PB_15, TIM8,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM8, 3, 1)}, // TIM8_CH3N
   {PB_15, TIM12,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM12, 2, 0)}, // TIM12_CH2
-  {PC_6,  TIM3,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 1, 0)}, // TIM3_CH1
+  //  {PC_6,  TIM3,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 1, 0)}, // TIM3_CH1
   {PC_6,  TIM8,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM8, 1, 0)}, // TIM8_CH1
-  {PC_7,  TIM3,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 2, 0)}, // TIM3_CH2
+  //  {PC_7,  TIM3,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 2, 0)}, // TIM3_CH2
   {PC_7,  TIM8,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM8, 2, 0)}, // TIM8_CH2
   {PC_8,  TIM3,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 3, 0)}, // TIM3_CH3
-  {PC_8,  TIM8,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM8, 3, 0)}, // TIM8_CH3
-  {PC_9,  TIM3,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 4, 0)}, // TIM3_CH4
+  //  {PC_8,  TIM8,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM8, 3, 0)}, // TIM8_CH3
+  //  {PC_9,  TIM3,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 4, 0)}, // TIM3_CH4
   {PC_9,  TIM8,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM8, 4, 0)}, // TIM8_CH4
   {PD_12, TIM4,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 1, 0)}, // TIM4_CH1
   {PD_13, TIM4,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 2, 0)}, // TIM4_CH2
@@ -220,7 +220,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -240,7 +240,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -260,7 +260,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -275,7 +275,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -292,9 +292,9 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
-  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
+  //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PB_15, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   {PC_3,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -304,9 +304,9 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
-  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
+  //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PB_14, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   {PC_2,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -316,9 +316,9 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
-  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
+  //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PB_10, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   {PB_13, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -328,10 +328,10 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
-  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
-  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
+  //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
+  //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_15, SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PB_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   {PB_12, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -342,7 +342,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_5,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -353,7 +353,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_6,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -366,7 +366,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** ETHERNET ***
 
 #ifdef HAL_ETH_MODULE_ENABLED
-const PinMap PinMap_Ethernet[] = {
+WEAK const PinMap PinMap_Ethernet[] = {
   {PA_0,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_CRS
   {PA_1,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_REF_CLK|ETH_RX_CLK
   {PA_2,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_MDIO
@@ -401,7 +401,7 @@ const PinMap PinMap_Ethernet[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   //  {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   //  {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   //  {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
@@ -412,7 +412,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
 #ifdef USE_USB_HS_IN_FS
   {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_SOF
   {PB_12, USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_ID
diff --git a/variants/BLUE_F407VE_Mini/PeripheralPins.c b/variants/BLUE_F407VE_Mini/PeripheralPins.c
index 8ca4335ef8..1c93a5606e 100644
--- a/variants/BLUE_F407VE_Mini/PeripheralPins.c
+++ b/variants/BLUE_F407VE_Mini/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   //  {PA_0,  ADC3,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC3_IN0
@@ -88,7 +88,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -98,7 +98,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // LED
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
@@ -108,7 +108,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -120,7 +120,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -196,7 +196,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -213,7 +213,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -230,7 +230,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -241,7 +241,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -254,7 +254,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -266,7 +266,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -278,7 +278,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -290,7 +290,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // LED
@@ -304,7 +304,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_5,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -315,7 +315,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_6,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // LED
@@ -328,7 +328,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** ETHERNET ***
 
 #ifdef HAL_ETH_MODULE_ENABLED
-const PinMap PinMap_Ethernet[] = {
+WEAK const PinMap PinMap_Ethernet[] = {
   {PA_0,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_CRS
   {PA_1,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_REF_CLK|ETH_RX_CLK
   {PA_2,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_MDIO
@@ -357,7 +357,7 @@ const PinMap PinMap_Ethernet[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   //  {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   //  {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
@@ -368,7 +368,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
 #ifdef USE_USB_HS_IN_FS
   {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_SOF
   {PB_12, USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_ID
diff --git a/variants/DEMO_F030F4/PeripheralPins.c b/variants/DEMO_F030F4/PeripheralPins.c
index c2d4fd05ed..ab90f78a7d 100644
--- a/variants/DEMO_F030F4/PeripheralPins.c
+++ b/variants/DEMO_F030F4/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1
   {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC_IN2
@@ -59,14 +59,14 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PA_10, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {NC,    NP,    0}
 };
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {NC,    NP,    0}
 };
@@ -75,7 +75,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_4,  TIM14,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_TIM14, 1, 0)}, // TIM14_CH1
   {PA_6,  TIM3,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM3, 1, 0)}, // TIM3_CH1
   //{PA_6,  TIM16,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM16, 1, 0)}, // TIM16_CH1
@@ -95,7 +95,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {PA_14, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
@@ -104,7 +104,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {NC,    NP,    0}
@@ -112,14 +112,14 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {NC,    NP,    0}
 };
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {NC,    NP,    0}
 };
@@ -128,28 +128,28 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {NC,    NP,    0}
 };
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {NC,    NP,    0}
 };
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // LED
   {NC,    NP,    0}
 };
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {NC,    NP,    0}
 };
diff --git a/variants/DISCO_F030R8/PeripheralPins.c b/variants/DISCO_F030R8/PeripheralPins.c
index f0b97258b2..c3ad049728 100644
--- a/variants/DISCO_F030R8/PeripheralPins.c
+++ b/variants/DISCO_F030R8/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0 - USER_BTN
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1
   {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC_IN2
@@ -66,7 +66,7 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C2)},
@@ -76,7 +76,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C2)},
@@ -88,7 +88,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_2,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM15, 1, 0)}, // TIM15_CH1
   {PA_3,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM15, 2, 0)}, // TIM15_CH2
   {PA_4,  TIM14,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_TIM14, 1, 0)}, // TIM14_CH1
@@ -130,7 +130,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {PA_14, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
@@ -140,7 +140,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {PA_15, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
@@ -150,7 +150,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {NC,    NP,    0}
@@ -158,7 +158,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)}, // USER_BTN
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {NC,    NP,    0}
@@ -168,7 +168,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_15, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
@@ -177,7 +177,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_14, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
@@ -186,7 +186,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_13, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
@@ -195,7 +195,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_12, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
diff --git a/variants/DISCO_F072RB/PeripheralPins.c b/variants/DISCO_F072RB/PeripheralPins.c
index 056f4375b3..3ea01aa261 100644
--- a/variants/DISCO_F072RB/PeripheralPins.c
+++ b/variants/DISCO_F072RB/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1
 #ifdef TSC_REMOVED
@@ -68,7 +68,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -78,7 +78,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C2)},
@@ -88,7 +88,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C2)},
@@ -100,7 +100,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 2, 0)}, // TIM2_CH2
   //  {PA_1,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM15, 1, 1)}, // TIM15_CH1N
@@ -160,7 +160,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
 #ifdef TSC_REMOVED
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
@@ -177,7 +177,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
 #ifdef TSC_REMOVED
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
@@ -194,7 +194,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
 #ifdef USB_REMOVED
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
@@ -210,7 +210,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
 #ifdef TSC_REMOVED
   {PA_6,  USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
@@ -227,7 +227,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
 #ifdef TSC_REMOVED
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
 #endif
@@ -239,7 +239,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
 #ifdef TSC_REMOVED
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
 #endif
@@ -251,7 +251,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_10, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -261,7 +261,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -273,7 +273,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
 #ifdef USB_REMOVED
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF4_CAN)},
 #endif
@@ -283,7 +283,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
 #ifdef USB_REMOVED
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF4_CAN)},
 #endif
@@ -299,7 +299,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DP
   //  {PA_13, USB, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_USB)}, // USB_NOE
diff --git a/variants/DISCO_F100RB/PeripheralPins.c b/variants/DISCO_F100RB/PeripheralPins.c
index 513a763d98..de58a74440 100644
--- a/variants/DISCO_F100RB/PeripheralPins.c
+++ b/variants/DISCO_F100RB/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC1_IN2 - STLink Tx
@@ -64,7 +64,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -74,7 +74,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_I2C1_ENABLE)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
@@ -83,7 +83,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_I2C1_ENABLE)},
   {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
@@ -94,7 +94,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_TIM2_PARTIAL_2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE, 2, 0)}, // TIM2_CH2
@@ -159,7 +159,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_6,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_USART1_ENABLE)},
@@ -170,7 +170,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_NONE)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_NONE)},
   {PB_7,  USART1,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_USART1_ENABLE)},
@@ -181,7 +181,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   //  {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -191,7 +191,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   //  {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -203,7 +203,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_15, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -212,7 +212,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_14, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -221,7 +221,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_13, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -230,7 +230,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_12, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
diff --git a/variants/DISCO_F407VG/PeripheralPins.c b/variants/DISCO_F407VG/PeripheralPins.c
index c45b42798a..2ff6c0ebe6 100644
--- a/variants/DISCO_F407VG/PeripheralPins.c
+++ b/variants/DISCO_F407VG/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   //  {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0 - User Blue button
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0 - User Blue button
   //  {PA_0,  ADC3,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC3_IN0 - User Blue button
@@ -88,7 +88,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   //  {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1 - I2S3_WS
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -98,7 +98,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   //  {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // Audio_SDA
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
@@ -108,7 +108,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   //  {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // Audio_SCL
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -120,7 +120,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1 - User Blue button
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1 - User Blue button
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -196,7 +196,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   //  {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, // User Blue button
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB
@@ -213,7 +213,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB
@@ -230,7 +230,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB
   {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -241,7 +241,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   //  {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // User Blue button
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB
   {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -254,7 +254,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // MEMS
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -266,7 +266,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // MEMS
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -278,7 +278,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // MEMS
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // T_SWO
   //  {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)}, // T_SWO
@@ -290,7 +290,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   //  {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // I2S3_WS
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)}, // I2S3_WS
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -304,7 +304,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   //  {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // USB
   {PB_5,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -315,7 +315,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   //  {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // USB
   //  {PB_6,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)}, // Audio_SCL
   //  {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // Audio_SDA
@@ -328,7 +328,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** ETHERNET ***
 
 #ifdef HAL_ETH_MODULE_ENABLED
-const PinMap PinMap_Ethernet[] = {
+WEAK const PinMap PinMap_Ethernet[] = {
   {PA_0,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_CRS
   {PA_1,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_REF_CLK|ETH_RX_CLK
   {PA_2,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_MDIO
@@ -357,7 +357,7 @@ const PinMap PinMap_Ethernet[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
@@ -368,7 +368,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
 #ifdef USE_USB_HS_IN_FS
   {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_SOF
   {PB_12, USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_ID
diff --git a/variants/DISCO_F746NG/PeripheralPins.c b/variants/DISCO_F746NG/PeripheralPins.c
index 2de65cdfb1..e62af58054 100644
--- a/variants/DISCO_F746NG/PeripheralPins.c
+++ b/variants/DISCO_F746NG/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   //  {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   {PA_0,  ADC3,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC3_IN0 - A0
@@ -96,7 +96,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -106,7 +106,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   //  {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // D14
   //  {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
@@ -122,7 +122,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   //  {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   //  {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // D15
@@ -140,7 +140,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1 - A0
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1 - A0
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -233,7 +233,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, // A0
   //  {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // STLink Tx
@@ -254,7 +254,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -275,7 +275,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   //  {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   //  {PA_15, UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, // D9
@@ -293,7 +293,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   //  {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // A0
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   //  {PB_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
@@ -313,7 +313,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   //  {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_2,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_SPI3)},
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -334,7 +334,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   //  {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -352,7 +352,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   //  {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -372,7 +372,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   //  {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -393,7 +393,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   //  {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   //  {PB_5,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // D15
@@ -405,7 +405,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   //  {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   //  {PB_6,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // D14
@@ -421,7 +421,7 @@ const PinMap PinMap_CAN_TD[] = {
 /* Configured for RMII mapping */
 
 #ifdef HAL_ETH_MODULE_ENABLED
-const PinMap PinMap_Ethernet[] = {
+WEAK const PinMap PinMap_Ethernet[] = {
   //  {PA_0,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_CRS
   {PA_1,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_REF_CLK|ETH_RX_CLK
   {PA_2,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_MDIO
@@ -457,7 +457,7 @@ const PinMap PinMap_Ethernet[] = {
 //*** QUADSPI ***
 
 #ifdef HAL_QSPI_MODULE_ENABLED
-const PinMap PinMap_QUADSPI[] = {
+WEAK const PinMap PinMap_QUADSPI[] = {
   {PA_1,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QUADSPI)}, // QUADSPI_BK1_IO3
   {PB_2,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QUADSPI)}, // QUADSPI_CLK
   {PB_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_NCS
@@ -487,7 +487,7 @@ const PinMap PinMap_QUADSPI[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
@@ -498,7 +498,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
 #ifdef USE_USB_HS_IN_FS
   {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_SOF
   {PB_12, USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_ID
diff --git a/variants/DISCO_L072CZ_LRWAN1/PeripheralPins.c b/variants/DISCO_L072CZ_LRWAN1/PeripheralPins.c
index 82bbe526d1..c6cd7cd546 100644
--- a/variants/DISCO_L072CZ_LRWAN1/PeripheralPins.c
+++ b/variants/DISCO_L072CZ_LRWAN1/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0
   //  {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1 - LoRa dedicated pin
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC_IN2 - STLINK Tx
@@ -61,7 +61,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -71,7 +71,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PA_10, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
   //  {PB_4,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF7_I2C3)}, // Not available on board
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
@@ -84,7 +84,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF7_I2C3)},
   {PA_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
@@ -99,7 +99,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 2, 0)}, // TIM2_CH2 - LoRa dedicated pin
   //  {PA_2,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 3, 0)}, // TIM2_CH3 - STLINK Tx
@@ -130,7 +130,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_USART4)},
   //  {PA_2,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_LPUART1)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
@@ -147,7 +147,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_1,  USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_USART4)}, // LoRa dedicated pin
   //  {PA_3,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_LPUART1)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
@@ -164,7 +164,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   //  {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)}, // LoRa dedicated pin
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART1)},
   //  {PA_15, USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_USART4)}, // Not available on board
@@ -178,7 +178,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
   //  {PA_6,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_LPUART1)}, // Not available on board
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART1)},
@@ -192,7 +192,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // RADIO_MOSI_PORT
   {PA_12, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
@@ -202,7 +202,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // RADIO_MISO_PORT
   {PA_11, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // Not available on board
@@ -213,7 +213,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // RADIO_SCLK_PORT
   //  {PB_10, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)}, // Not available on board
@@ -223,7 +223,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // RADIO_NSS_PORT
   {PB_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -241,7 +241,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DP
   //  {PA_13, USB, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_USB)}, // USB_NOE
diff --git a/variants/DISCO_L475VG_IOT/PeripheralPins.c b/variants/DISCO_L475VG_IOT/PeripheralPins.c
index 70850fe658..94ec2fe61f 100644
--- a/variants/DISCO_L475VG_IOT/PeripheralPins.c
+++ b/variants/DISCO_L475VG_IOT/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG_ADC_CONTROL, GPIO_NOPULL, 0, 5, 0)}, // ADC1_IN5 - D1/UART4_TX
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG_ADC_CONTROL, GPIO_NOPULL, 0, 5, 0)}, // ADC2_IN5 - D1/UART4_TX
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG_ADC_CONTROL, GPIO_NOPULL, 0, 6, 0)}, // ADC1_IN6 - D0/UART4_RX
@@ -84,7 +84,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC1_OUT1 - D7
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC1_OUT2 - D13/SPI1_SCK/LED1
   {NC,    NP,    0}
@@ -94,7 +94,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   //  {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, //ST-LINK-UART1_RX
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, //D14/I2C1_SDA
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)}, //INTERNAL-I2C2_SDA
@@ -105,7 +105,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   //  {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, //ST-LINK-UART1_TX
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, //D15/I2C1_SCL
   {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)}, //INTERNAL-I2C2_SCL
@@ -118,7 +118,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   //  {PA_0,  TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1 - D1/UART4_TX
   {PA_0,  TIM5,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1 - D1/UART4_TX
   //  {PA_1,  TIM2,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2 - D0/UART4_RX
@@ -202,7 +202,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, //D1/UART4_TX
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, //D10/PWM
   //  {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, //USB_OTG_FS_VBUS
@@ -221,7 +221,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, //D0/UART4_RX
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, //D4
   //  {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, //USB_OTG_FS_ID
@@ -240,7 +240,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   //  {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, //D0/UART4_RX
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, //USB_OTG_FS_DP
   //  {PA_15, UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, //D9/PWM
@@ -257,7 +257,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   //  {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, //D1/UART4_TX
   //  {PA_6,  USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)}, //D12/SPI_MISO
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, //USB_OTG_FS_DM
@@ -275,7 +275,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, //D11/SPI1_MOSI/PWM
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, //SPSGRF-915-SPI3_CSN
   //  {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)}, //SPSGRF-915-SPI3_CSN
@@ -289,7 +289,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, //D12
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, //D5/PWM
   //  {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)}, //D5/PWM
@@ -303,7 +303,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, //D13/SPI1_SCK/LED1
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, //SYS_JTDO-SWO
   //  {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)}, //SYS_JTDO-SWO
@@ -317,7 +317,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   //  {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, //D7
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)}, //D7
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, //D9/PWM
@@ -333,7 +333,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   //  {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, //USB_OTG_FS_DM
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, //D15/I2C1_SCL
   {PD_0,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, //PMOD-RESET
@@ -342,7 +342,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   //  {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, //USB_OTG_FS_DP
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, //D14/I2C1_SDA
   {PD_1,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, //PMOD-SPI2_SCK
@@ -355,7 +355,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** QUADSPI ***
 
 #ifdef HAL_QSPI_MODULE_ENABLED
-const PinMap PinMap_QUADSPI[] = {
+WEAK const PinMap PinMap_QUADSPI[] = {
   //  {PA_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_IO3
   //  {PA_7,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_IO2
   //  {PB_0,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_IO1
@@ -375,7 +375,7 @@ const PinMap PinMap_QUADSPI[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   //  {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
diff --git a/variants/DIYMROE_F407VGT/PeripheralPins.c b/variants/DIYMROE_F407VGT/PeripheralPins.c
index 8cb4ab5d1f..83789e4410 100644
--- a/variants/DIYMROE_F407VGT/PeripheralPins.c
+++ b/variants/DIYMROE_F407VGT/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   //  {PA_0,  ADC3,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC3_IN0
@@ -88,7 +88,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -98,7 +98,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
@@ -108,7 +108,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -120,7 +120,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -196,7 +196,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -213,7 +213,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -230,7 +230,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -241,7 +241,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -254,7 +254,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -266,7 +266,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -278,7 +278,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -290,7 +290,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -304,7 +304,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_5,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -315,7 +315,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_6,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -328,7 +328,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** ETHERNET ***
 
 #ifdef HAL_ETH_MODULE_ENABLED
-const PinMap PinMap_Ethernet[] = {
+WEAK const PinMap PinMap_Ethernet[] = {
   {PA_0,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_CRS
   {PA_1,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_REF_CLK|ETH_RX_CLK
   {PA_2,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_MDIO
@@ -357,7 +357,7 @@ const PinMap PinMap_Ethernet[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
@@ -368,7 +368,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
 #ifdef USE_USB_HS_IN_FS
   {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_SOF
   {PB_12, USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_ID
diff --git a/variants/EEXTR_F030_V1/PeripheralPins.c b/variants/EEXTR_F030_V1/PeripheralPins.c
index 6838c2b1ac..4600812d13 100644
--- a/variants/EEXTR_F030_V1/PeripheralPins.c
+++ b/variants/EEXTR_F030_V1/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1
   {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC_IN2
@@ -60,7 +60,7 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   //  {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C2)}, // E0_CTL
@@ -70,7 +70,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   //  {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C2)}, // E1_FAN
@@ -82,7 +82,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_2,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM15, 1, 0)},   // TIM15_CH1
   //  {PA_3,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM15, 2, 0)}, // TIM15_CH2 - TC1_CS
   //  {PA_4,  TIM14,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_TIM14, 1, 0)}, // TIM14_CH1 - TC2_CS
@@ -120,7 +120,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   //  {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)}, // ADC
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {PA_14, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
@@ -130,7 +130,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)}, // TC2_CS
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {PA_15, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
@@ -140,7 +140,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   //  {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)}, // ADC
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {NC,    NP,    0}
@@ -148,7 +148,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   //  {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)}, // ADC
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {NC,    NP,    0}
@@ -158,7 +158,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_15, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
@@ -167,7 +167,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_14, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
@@ -176,7 +176,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_13, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
@@ -185,7 +185,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   //  {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // TC2_CS
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   //  {PB_12, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)}, // E1_CTL
diff --git a/variants/FK407M1/PeripheralPins.c b/variants/FK407M1/PeripheralPins.c
index 8b7e79f3de..f10e883494 100644
--- a/variants/FK407M1/PeripheralPins.c
+++ b/variants/FK407M1/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   //  {PA_0,  ADC3,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC3_IN0
@@ -88,7 +88,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -98,7 +98,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
@@ -108,7 +108,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -120,7 +120,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -196,7 +196,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -213,7 +213,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -230,7 +230,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -241,7 +241,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -254,7 +254,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -266,7 +266,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -278,7 +278,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -290,7 +290,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -304,7 +304,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_5,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -315,7 +315,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_6,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -328,7 +328,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** ETHERNET ***
 
 #ifdef HAL_ETH_MODULE_ENABLED
-const PinMap PinMap_Ethernet[] = {
+WEAK const PinMap PinMap_Ethernet[] = {
   {PA_0,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_CRS
   {PA_1,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_REF_CLK|ETH_RX_CLK
   {PA_2,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_MDIO
@@ -357,7 +357,7 @@ const PinMap PinMap_Ethernet[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   //  {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   //  {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   //  {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
@@ -368,7 +368,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
 #ifdef USE_USB_HS_IN_FS
   //  {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_SOF
   //  {PB_12, USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_ID
diff --git a/variants/HY_TinySTM103T/PeripheralPins.c b/variants/HY_TinySTM103T/PeripheralPins.c
index 96f0dca381..2ce375801c 100644
--- a/variants/HY_TinySTM103T/PeripheralPins.c
+++ b/variants/HY_TinySTM103T/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
@@ -70,14 +70,14 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
   {NC,    NP,    0}
 };
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
   {NC,    NP,    0}
 };
@@ -86,7 +86,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_TIM2_PARTIAL_2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE, 2, 0)}, // TIM2_CH2
@@ -127,7 +127,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_6,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_USART1_ENABLE)},
@@ -136,7 +136,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_NONE)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_NONE)},
   {PB_7,  USART1,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_USART1_ENABLE)},
@@ -145,7 +145,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {NC,    NP,    0}
@@ -153,7 +153,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {NC,    NP,    0}
@@ -163,7 +163,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {NC,    NP,    0}
@@ -171,7 +171,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {NC,    NP,    0}
@@ -179,7 +179,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {NC,    NP,    0}
@@ -187,7 +187,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {NC,    NP,    0}
@@ -197,14 +197,14 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)},
   {NC,    NP,    0}
 };
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, AFIO_NONE)},
   {NC,    NP,    0}
 };
@@ -217,7 +217,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)}, // USB_DP
   {NC,    NP,    0}
diff --git a/variants/MALYANM200_F070CB/PeripheralPins.c b/variants/MALYANM200_F070CB/PeripheralPins.c
index 3e295b65d1..80a0766f44 100644
--- a/variants/MALYANM200_F070CB/PeripheralPins.c
+++ b/variants/MALYANM200_F070CB/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1
   {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC_IN2
@@ -60,7 +60,7 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C2)},
@@ -70,7 +70,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C2)},
@@ -82,7 +82,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_1,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM15, 1, 1)}, // TIM15_CH1N
   {PA_2,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM15, 1, 0)}, // TIM15_CH1
   {PA_3,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM15, 2, 0)}, // TIM15_CH2
@@ -121,7 +121,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
@@ -133,7 +133,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
@@ -145,7 +145,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {PA_15, USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
@@ -156,7 +156,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
   {PA_6,  USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
@@ -169,7 +169,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_15, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
@@ -178,7 +178,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_14, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
@@ -187,7 +187,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_10, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -197,7 +197,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -215,7 +215,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DP
   {PA_13, USB, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_USB)}, // USB_NOE
diff --git a/variants/MALYANM200_F103CB/PeripheralPins.c b/variants/MALYANM200_F103CB/PeripheralPins.c
index 8975aa9d7c..24d07f71ca 100644
--- a/variants/MALYANM200_F103CB/PeripheralPins.c
+++ b/variants/MALYANM200_F103CB/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
@@ -70,7 +70,7 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_I2C1_ENABLE)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
@@ -79,7 +79,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_I2C1_ENABLE)},
   {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
@@ -90,7 +90,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_TIM2_PARTIAL_2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE, 2, 0)}, // TIM2_CH2
@@ -140,7 +140,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_6,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_USART1_ENABLE)},
@@ -150,7 +150,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_NONE)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_NONE)},
   {PB_7,  USART1,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_USART1_ENABLE)},
@@ -160,7 +160,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -170,7 +170,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -182,7 +182,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_15, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -191,7 +191,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_14, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -200,7 +200,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_13, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -209,7 +209,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_12, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -220,7 +220,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_CAN1_2)},
   {NC,    NP,    0}
@@ -228,7 +228,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, AFIO_NONE)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, AFIO_CAN1_2)},
   {NC,    NP,    0}
@@ -241,7 +241,7 @@ const PinMap PinMap_CAN_TD[] = {
 
 //*** USB ***
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)}, // USB_DP
   {NC,    NP,    0}
diff --git a/variants/MAPLEMINI_F103CB/PeripheralPins.c b/variants/MAPLEMINI_F103CB/PeripheralPins.c
index 6167bb6c1b..2fac1bf6a3 100644
--- a/variants/MAPLEMINI_F103CB/PeripheralPins.c
+++ b/variants/MAPLEMINI_F103CB/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
@@ -70,7 +70,7 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_I2C1_ENABLE)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
@@ -79,7 +79,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_I2C1_ENABLE)},
   {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
@@ -90,7 +90,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_TIM2_PARTIAL_2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE, 2, 0)}, // TIM2_CH2
@@ -140,7 +140,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_6,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_USART1_ENABLE)},
@@ -150,7 +150,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_NONE)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_NONE)},
   {PB_7,  USART1,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_USART1_ENABLE)},
@@ -160,7 +160,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -170,7 +170,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -182,7 +182,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_15, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -191,7 +191,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_14, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -200,7 +200,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_13, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -209,7 +209,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_12, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -220,7 +220,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_CAN1_2)},
   {NC,    NP,    0}
@@ -228,7 +228,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, AFIO_NONE)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, AFIO_CAN1_2)},
   {NC,    NP,    0}
@@ -242,7 +242,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)}, // USB_DP
   {NC,    NP,    0}
diff --git a/variants/NUCLEO_F030R8/PeripheralPins.c b/variants/NUCLEO_F030R8/PeripheralPins.c
index f87f6ef3b0..81b2b322c6 100644
--- a/variants/NUCLEO_F030R8/PeripheralPins.c
+++ b/variants/NUCLEO_F030R8/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC_IN2 - STLink Tx
@@ -66,7 +66,7 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C2)},
@@ -76,7 +76,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C2)},
@@ -88,7 +88,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   //  {PA_2,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM15, 1, 0)}, // TIM15_CH1 - STLink Tx
   //  {PA_3,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_TIM15, 2, 0)}, // TIM15_CH2 - STLink Rx
   {PA_4,  TIM14,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_TIM14, 1, 0)}, // TIM14_CH1
@@ -130,7 +130,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {PA_14, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
@@ -140,7 +140,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {PA_15, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
@@ -150,7 +150,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {NC,    NP,    0}
@@ -158,7 +158,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {NC,    NP,    0}
@@ -168,7 +168,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_15, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
@@ -177,7 +177,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_14, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
@@ -186,7 +186,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // LED
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_13, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
@@ -195,7 +195,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_12, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
diff --git a/variants/NUCLEO_F091RC/PeripheralPins.c b/variants/NUCLEO_F091RC/PeripheralPins.c
index 3a3bb0183b..7ee46299af 100644
--- a/variants/NUCLEO_F091RC/PeripheralPins.c
+++ b/variants/NUCLEO_F091RC/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0 - A0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1 - A1
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC_IN2 - D1 - STLink Tx
@@ -64,7 +64,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1 - A2
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2 - D13 (LED1)
   {NC,    NP,    0}
@@ -74,7 +74,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PA_10, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // D2
   {PA_12, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF5_I2C2)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
@@ -87,7 +87,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // D8
   {PA_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF5_I2C2)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)}, // D10
@@ -102,7 +102,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 1, 0)}, // TIM2_CH1 - A0
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 2, 0)}, // TIM2_CH2 - A1
   {PA_1,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM15, 1, 1)}, // TIM15_CH1N - A1
@@ -154,7 +154,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)}, // A0
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)}, // D1
   {PA_4,  USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_USART6)}, // A2
@@ -177,7 +177,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)}, // A1
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)}, // D0
   {PA_5,  USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_USART6)}, // D13 (LED1)
@@ -200,7 +200,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)}, // A1
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   {PA_15, USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
@@ -213,7 +213,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)}, // A0
   {PA_6,  USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)}, // D12
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
@@ -226,7 +226,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // D11
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // D4
   {PB_15, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
@@ -236,7 +236,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // D12
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // D5
   {PB_14, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
@@ -246,7 +246,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // D13 (LED1)
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // D3
   {PB_10, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)}, // D6
@@ -256,7 +256,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // A2
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)}, // D14
@@ -268,7 +268,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF4_CAN)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF4_CAN)}, // D15
   {NC,    NP,    0}
@@ -276,7 +276,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF4_CAN)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF4_CAN)}, // D14
   {NC,    NP,    0}
diff --git a/variants/NUCLEO_F103RB/PeripheralPins.c b/variants/NUCLEO_F103RB/PeripheralPins.c
index 54e99ae5c2..84d0ffb53c 100644
--- a/variants/NUCLEO_F103RB/PeripheralPins.c
+++ b/variants/NUCLEO_F103RB/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
@@ -82,7 +82,7 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_I2C1_ENABLE)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
@@ -91,7 +91,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_I2C1_ENABLE)},
   {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
@@ -102,7 +102,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_TIM2_PARTIAL_2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE, 2, 0)}, // TIM2_CH2
@@ -156,7 +156,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_6,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_USART1_ENABLE)},
@@ -167,7 +167,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_NONE)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_NONE)},
   {PB_7,  USART1,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_USART1_ENABLE)},
@@ -178,7 +178,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -188,7 +188,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -200,7 +200,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_15, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -209,7 +209,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_14, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -218,7 +218,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_13, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -227,7 +227,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
   {PB_12, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
@@ -238,7 +238,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_CAN1_2)},
   {NC,    NP,    0}
@@ -246,7 +246,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, AFIO_NONE)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, AFIO_CAN1_2)},
   {NC,    NP,    0}
@@ -260,7 +260,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)}, // USB_DP
   {NC,    NP,    0}
diff --git a/variants/NUCLEO_F207ZG/PeripheralPins.c b/variants/NUCLEO_F207ZG/PeripheralPins.c
index 82496c15a3..dbff8b3cf1 100644
--- a/variants/NUCLEO_F207ZG/PeripheralPins.c
+++ b/variants/NUCLEO_F207ZG/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   //  {PA_0,  ADC3,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC3_IN0
@@ -96,7 +96,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -106,7 +106,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   //  {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // LED2
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
@@ -117,7 +117,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   //  {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)}, // USB_SOF
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -130,7 +130,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2 - Ethernet RMII Reference Clock
@@ -210,7 +210,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // Ethernet RMII MDIO
   //  {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB VBUS
@@ -228,7 +228,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, // Ethernet RMII Reference Clock
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB ID
@@ -246,7 +246,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   //  {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // Ethernet RMII Reference Clock
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB DP
   {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)}, // LED3
@@ -259,7 +259,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB DM
   //  {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)}, // USB DP
@@ -274,7 +274,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // Ethernet RMII RX Data Valid - used when JP6 ON - D11 (default configuration)
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // D11 if SB121 off, SB122 on
   //  {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -286,7 +286,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -298,7 +298,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -310,7 +310,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -324,7 +324,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   //  {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // USB DM
   {PB_5,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -335,7 +335,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   //  {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // USB DP
   {PB_6,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -348,7 +348,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** ETHERNET ***
 
 #ifdef HAL_ETH_MODULE_ENABLED
-const PinMap PinMap_Ethernet[] = {
+WEAK const PinMap PinMap_Ethernet[] = {
   //  {PA_0,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_CRS
   {PA_1,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_REF_CLK|ETH_RX_CLK
   {PA_2,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_MDIO
@@ -381,7 +381,7 @@ const PinMap PinMap_Ethernet[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
@@ -392,7 +392,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
 #ifdef USE_USB_HS_IN_FS
   {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_SOF
   {PB_12, USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_ID
diff --git a/variants/NUCLEO_F302R8/PeripheralPins.c b/variants/NUCLEO_F302R8/PeripheralPins.c
index c4d4e026c4..c348f2bdcf 100644
--- a/variants/NUCLEO_F302R8/PeripheralPins.c
+++ b/variants/NUCLEO_F302R8/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1 - A0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC1_IN2 - A1
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 3, 0)}, // ADC1_IN3 - STLink Tx
@@ -63,7 +63,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {NC,    NP,    0}
 };
@@ -72,7 +72,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PA_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
   {PA_14, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_5,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF8_I2C3)},
@@ -85,7 +85,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF3_I2C3)},
   {PA_9,  I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
   {PA_15, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -99,7 +99,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
   {PA_1,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM15, 1, 1)}, // TIM15_CH1N
@@ -152,7 +152,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_14, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -167,7 +167,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_15, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -182,7 +182,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -191,7 +191,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -203,7 +203,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_11, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PB_15, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -213,7 +213,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_10, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PB_14, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -223,7 +223,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PB_13, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   {PC_10, SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -233,7 +233,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PA_15, SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PB_12, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -245,7 +245,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_TIM1)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_TIM1)},
   {NC,    NP,    0}
@@ -253,7 +253,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_TIM1)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_TIM1)},
   {NC,    NP,    0}
@@ -267,7 +267,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DP
   {NC,    NP,    0}
diff --git a/variants/NUCLEO_F303K8/PeripheralPins.c b/variants/NUCLEO_F303K8/PeripheralPins.c
index 196811b5cc..717baf08a3 100644
--- a/variants/NUCLEO_F303K8/PeripheralPins.c
+++ b/variants/NUCLEO_F303K8/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC1_IN2
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 3, 0)}, // ADC1_IN3 - VCP_Tx
@@ -58,7 +58,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   //  {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC1_OUT1
   //  {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC1_OUT2
   {PA_6,  DAC2, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC2_OUT1
@@ -69,7 +69,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   //  {PA_14, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {NC,    NP,    0}
@@ -77,7 +77,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   //  {PA_15, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // VCP_RX
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {NC,    NP,    0}
@@ -87,7 +87,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
   {PA_1,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM15, 1, 1)}, // TIM15_CH1N
@@ -133,7 +133,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_14, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -144,7 +144,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_15, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -155,7 +155,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {NC,    NP,    0}
@@ -163,7 +163,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {NC,    NP,    0}
@@ -173,7 +173,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {NC,    NP,    0}
@@ -181,7 +181,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   //  {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {NC,    NP,    0}
@@ -189,7 +189,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   //  {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {NC,    NP,    0}
@@ -197,7 +197,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // VCP_RX
   {NC,    NP,    0}
@@ -207,14 +207,14 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)},
   {NC,    NP,    0}
 };
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)},
   {NC,    NP,    0}
 };
diff --git a/variants/NUCLEO_F303RE/PeripheralPins.c b/variants/NUCLEO_F303RE/PeripheralPins.c
index c17b2471d5..c24cd8059e 100644
--- a/variants/NUCLEO_F303RE/PeripheralPins.c
+++ b/variants/NUCLEO_F303RE/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1 - A0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC1_IN2 - A1
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 3, 0)}, // ADC1_IN3 - STLink Tx
@@ -75,7 +75,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC1_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC1_OUT2 - LED1
   {NC,    NP,    0}
@@ -85,7 +85,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PA_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
   {PA_14, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_5,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF8_I2C3)},
@@ -98,7 +98,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF3_I2C3)},
   {PA_9,  I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
   {PA_15, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -112,7 +112,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
   {PA_1,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM15, 1, 1)}, // TIM15_CH1N
@@ -202,7 +202,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_14, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -219,7 +219,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_15, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -236,7 +236,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -245,7 +245,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -257,7 +257,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_11, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -269,7 +269,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_10, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -281,7 +281,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // LED1
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -293,7 +293,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   //  {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -307,7 +307,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)},
   {NC,    NP,    0}
@@ -315,7 +315,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)},
   {NC,    NP,    0}
@@ -329,7 +329,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DP
   {NC,    NP,    0}
diff --git a/variants/NUCLEO_F401RE/PeripheralPins.c b/variants/NUCLEO_F401RE/PeripheralPins.c
index 6dfda8d23d..d693678c25 100644
--- a/variants/NUCLEO_F401RE/PeripheralPins.c
+++ b/variants/NUCLEO_F401RE/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC1_IN2
@@ -66,7 +66,7 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_3,  I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF9_I2C2)},
   {PB_4,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF9_I2C3)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -77,7 +77,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -89,7 +89,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // A0  // TIM2_CH1
   {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // A0  // TIM5_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // A1  // TIM2_CH2
@@ -137,7 +137,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_11, USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
@@ -148,7 +148,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_12, USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
@@ -159,7 +159,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {NC,    NP,    0}
@@ -167,7 +167,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {NC,    NP,    0}
@@ -177,7 +177,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -189,7 +189,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -201,7 +201,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -213,7 +213,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -233,7 +233,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
diff --git a/variants/NUCLEO_F411RE/PeripheralPins.c b/variants/NUCLEO_F411RE/PeripheralPins.c
index a51e6d947f..b2332fae8a 100644
--- a/variants/NUCLEO_F411RE/PeripheralPins.c
+++ b/variants/NUCLEO_F411RE/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC1_IN2 - STLink Tx
@@ -66,7 +66,7 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_3,  I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF9_I2C2)},
   {PB_4,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF9_I2C3)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -79,7 +79,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -91,7 +91,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -139,7 +139,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_11, USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
@@ -151,7 +151,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_12, USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
@@ -163,7 +163,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {NC,    NP,    0}
@@ -171,7 +171,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {NC,    NP,    0}
@@ -181,7 +181,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_1,  SPI4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI4)},
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_10, SPI5, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI5)},
@@ -196,7 +196,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_11, SPI4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI4)},
   {PA_12, SPI5, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI5)},
@@ -210,7 +210,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_0,  SPI5, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI5)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -226,7 +226,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -248,7 +248,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
diff --git a/variants/NUCLEO_F429ZI/PeripheralPins.c b/variants/NUCLEO_F429ZI/PeripheralPins.c
index 71e65e4d59..81362b5468 100644
--- a/variants/NUCLEO_F429ZI/PeripheralPins.c
+++ b/variants/NUCLEO_F429ZI/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0 - PA0/WKUP
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0 - PA0/WKUP
   //  {PA_0,  ADC3,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC3_IN0 - PA0/WKUP
@@ -96,7 +96,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2 - D13
   {NC,    NP,    0}
@@ -106,7 +106,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   //  {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // - LED2 Blue
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // - D14
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
@@ -117,7 +117,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // D15
@@ -130,7 +130,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1 - PA0/WKUP
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2 - ETH RMII Ref Clk
@@ -210,7 +210,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, // - PA0/WKUP
   //  {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // - ETH RMII MDIO
   //  {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // - USB VBUS
@@ -231,7 +231,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, // - ETH RMII Ref Clk
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // - A0
   //  {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // - USB ID
@@ -252,7 +252,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   //  {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // - ETH RMII Ref Clk
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // - USB DP
   //  {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)}, // - LED3 Red
@@ -265,7 +265,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // - PA0/WKUP
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // - USB DM
   {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)}, // - ETH RMII TXD1 (when JP7 ON)
@@ -280,7 +280,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // - ETH RMII RX Data Valid (when JP6 ON)
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -298,7 +298,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // - D12
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -314,7 +314,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // - D13
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -331,7 +331,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -349,7 +349,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   //  {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // - USB DM
   {PB_5,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // - D15
@@ -360,7 +360,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   //  {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // - USB DP
   {PB_6,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // - D14
@@ -375,7 +375,7 @@ const PinMap PinMap_CAN_TD[] = {
 /* Configured for RMII mapping */
 
 #ifdef HAL_ETH_MODULE_ENABLED
-const PinMap PinMap_Ethernet[] = {
+WEAK const PinMap PinMap_Ethernet[] = {
   // {PA_0,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_CRS
   {PA_1,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_REF_CLK|ETH_RX_CLK
   {PA_2,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_MDIO
@@ -408,7 +408,7 @@ const PinMap PinMap_Ethernet[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
@@ -419,7 +419,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
 #ifdef USE_USB_HS_IN_FS
   {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_SOF
   {PB_12, USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_ID
diff --git a/variants/NUCLEO_F446RE/PeripheralPins.c b/variants/NUCLEO_F446RE/PeripheralPins.c
index ad80706944..168173dc5b 100644
--- a/variants/NUCLEO_F446RE/PeripheralPins.c
+++ b/variants/NUCLEO_F446RE/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   //  {PA_0,  ADC3,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC3_IN0
@@ -88,7 +88,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2 - LD2
   {NC,    NP,    0}
@@ -98,7 +98,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_3,  I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
   {PB_4,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -111,7 +111,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -124,7 +124,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -189,7 +189,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // STLink Tx
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -204,7 +204,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // STLink Rx
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -219,7 +219,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_15, UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
@@ -230,7 +230,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
@@ -243,7 +243,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_0,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_SPI3)},
   {PB_2,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_SPI3)},
@@ -259,7 +259,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -271,7 +271,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -285,7 +285,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -300,7 +300,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_5,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -310,7 +310,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_6,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -324,7 +324,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** QUADSPI ***
 
 #ifdef HAL_QSPI_MODULE_ENABLED
-const PinMap PinMap_QUADSPI[] = {
+WEAK const PinMap PinMap_QUADSPI[] = {
   {PA_1,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QSPI)}, // QUADSPI_BK1_IO3
   {PB_2,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QSPI)}, // QUADSPI_CLK
   {PB_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QSPI)}, // QUADSPI_BK1_NCS
@@ -338,7 +338,7 @@ const PinMap PinMap_QUADSPI[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
@@ -349,7 +349,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
 #ifdef USE_USB_HS_IN_FS
   {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_SOF
   {PB_12, USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_ID
diff --git a/variants/NUCLEO_F767ZI/PeripheralPins.c b/variants/NUCLEO_F767ZI/PeripheralPins.c
index 54568e12a7..af31e9fea8 100644
--- a/variants/NUCLEO_F767ZI/PeripheralPins.c
+++ b/variants/NUCLEO_F767ZI/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   //  {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0 - D32
   {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0 - D32
   //  {PA_0,  ADC3,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC3_IN0 - D32
@@ -96,7 +96,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -106,7 +106,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   //  {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   //  {PB_7,  I2C4, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF11_I2C4)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // D14 I2CA
@@ -121,7 +121,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   //  {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // D26
   //  {PB_6,  I2C4, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF11_I2C4)}, // D26
@@ -138,7 +138,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1 - D32
   {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1 - D32
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -218,7 +218,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, // D32
   //  {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -247,7 +247,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // A0
   //  {PA_8,  UART7,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_UART7)},
@@ -276,7 +276,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   //  {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_15, UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, // D20
@@ -295,7 +295,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // D32
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, // D33
@@ -316,7 +316,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // D11(D71) SPI_A_MOSI
   //  {PA_7,  SPI6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_SPI6)}, // D11(D71) SPI_A_MOSI
   {PB_2,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_SPI3)}, // D27
@@ -339,7 +339,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // D12 SPI_A_MISO
   //  {PA_6,  SPI6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_SPI6)}, // D12 SPI_A_MISO
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // D25 SPI_B_MISO
@@ -358,7 +358,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // D13 SPI_A_SCK
   //  {PA_5,  SPI6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_SPI6)}, // D13 SPI_A_SCK
   //  {PA_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -380,7 +380,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // D24 SPI_A_NSS
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)}, // D24 SPI_A_NSS
   //  {PA_4,  SPI6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_SPI6)}, // D24 SPI_A_NSS
@@ -403,7 +403,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   //  {PA_8,  CAN3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF11_CAN3)},
   //  {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_3,  CAN3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF11_CAN3)}, // D23
@@ -416,7 +416,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   //  {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PA_15, CAN3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF11_CAN3)}, // D20
   {PB_4,  CAN3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF11_CAN3)}, // D25
@@ -431,7 +431,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** ETHERNET ***
 
 #ifdef HAL_ETH_MODULE_ENABLED
-const PinMap PinMap_Ethernet[] = {
+WEAK const PinMap PinMap_Ethernet[] = {
   //  {PA_0,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_CRS
   {PA_1,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_REF_CLK|ETH_RX_CLK
   {PA_2,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_MDIO
@@ -462,7 +462,7 @@ const PinMap PinMap_Ethernet[] = {
 //*** QUADSPI ***
 
 #ifdef HAL_QSPI_MODULE_ENABLED
-const PinMap PinMap_QUADSPI[] = {
+WEAK const PinMap PinMap_QUADSPI[] = {
   //  {PA_1,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QUADSPI)}, // QUADSPI_BK1_IO3
   {PB_2,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QUADSPI)}, // QUADSPI_CLK - D27 QSPI_CLK
   {PB_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_NCS - D26 QSPI_CS
@@ -492,7 +492,7 @@ const PinMap PinMap_QUADSPI[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
@@ -503,7 +503,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
   {PA_3,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_HS)}, // USB_OTG_HS_ULPI_D0
 #ifdef USE_USB_HS_IN_FS
   {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_SOF
diff --git a/variants/NUCLEO_G071RB/PeripheralPins.c b/variants/NUCLEO_G071RB/PeripheralPins.c
index d81960727d..a25c613fc2 100644
--- a/variants/NUCLEO_G071RB/PeripheralPins.c
+++ b/variants/NUCLEO_G071RB/PeripheralPins.c
@@ -23,7 +23,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
   // {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC1_IN2
@@ -47,7 +47,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC1_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC1_OUT2
   {NC,    NP,    0}
@@ -57,7 +57,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PA_10, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
   {PA_12, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C2)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
@@ -69,7 +69,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
   {PA_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C2)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
@@ -83,7 +83,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 2, 0)}, // TIM2_CH2
   //{PA_1,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_TIM15, 1, 1)}, // TIM15_CH1N
@@ -156,7 +156,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
   //{PA_2,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_LPUART1)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
@@ -180,7 +180,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
   //{PA_3,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_LPUART1)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
@@ -203,7 +203,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
   //{PA_15, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_USART3)},
@@ -220,7 +220,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
   {PA_6,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_LPUART1)},
   {PA_6,  USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
@@ -237,7 +237,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   // {PA_2,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_4,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
@@ -255,7 +255,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   // {PA_3,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_SPI2)},
@@ -272,7 +272,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_0,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI2)},
   {PA_1,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
@@ -287,7 +287,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_8,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI2)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
diff --git a/variants/NUCLEO_H743ZI/PeripheralPins.c b/variants/NUCLEO_H743ZI/PeripheralPins.c
index 064cbbc34e..547cb64fe1 100644
--- a/variants/NUCLEO_H743ZI/PeripheralPins.c
+++ b/variants/NUCLEO_H743ZI/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   //  {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 16, 0)}, // ADC1_INP16
   //  {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 16, 0)}, // ADC1_INN16 - ETH RMII Ref Clk
   //  {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)}, // ADC1_INP17 - ETH RMII Ref Clk
@@ -113,7 +113,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC1_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC1_OUT2
   {NC,    NP,    0}
@@ -123,7 +123,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   //  {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // LD2 LED_BLUE (ZI)
   {PB_7,  I2C4, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C4)}, // LD2 LED_BLUE (ZI)
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -138,7 +138,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   //  {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)}, // USB SOF
   //  {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // QSPI_CS
   {PB_6,  I2C4, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C4)}, // QSPI_CS
@@ -155,7 +155,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2 - ETH RMII Ref Clk
@@ -241,7 +241,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // ETH RMII MDIO
   //  {PA_9,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_LPUART)}, // USB VBUS
@@ -272,7 +272,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)}, // ETH RMII Ref Clk
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_8,  UART7,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_UART7)}, // USB SOF
@@ -303,7 +303,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   //  {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // ETH RMII Ref Clk
   //  {PA_12, LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_LPUART)}, // USB DP
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB DP
@@ -323,7 +323,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_11, LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_LPUART)}, // USB DM
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB DM
@@ -345,7 +345,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // Used by ETH when JP6(ZI)/SB31(ZI2) ON
   //  {PA_7,  SPI6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_SPI6)}, // Used by ETH when JP6(ZI)/SB31(ZI2) ON
   {PB_2,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_SPI3)},
@@ -368,7 +368,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_6,  SPI6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_SPI6)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -387,7 +387,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_5,  SPI6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_SPI6)},
   //  {PA_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)}, // USB VBUS
@@ -409,7 +409,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_4,  SPI6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_SPI6)},
@@ -432,7 +432,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   //  {PA_11, CANFD1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_FDCAN1)}, // USB DM
   {PB_5,  CANFD2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_FDCAN2)},
   {PB_8,  CANFD1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_FDCAN1)},
@@ -443,7 +443,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   //  {PA_12, CANFD1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_FDCAN1)}, // USB DP
   {PB_6,  CANFD2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_FDCAN2)}, // QSPI_CS
   {PB_7,  CANFD2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_FDCAN2)}, // LD2 LED_BLUE (ZI)
@@ -457,7 +457,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** ETHERNET ***
 
 #ifdef HAL_ETH_MODULE_ENABLED
-const PinMap PinMap_Ethernet[] = {
+WEAK const PinMap PinMap_Ethernet[] = {
   //  {PA_0,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_CRS
   {PA_1,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_REF_CLK|ETH_RX_CLK
   {PA_2,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_MDIO
@@ -489,7 +489,7 @@ const PinMap PinMap_Ethernet[] = {
 //*** QUADSPI ***
 
 #ifdef HAL_QSPI_MODULE_ENABLED
-const PinMap PinMap_QUADSPI[] = {
+WEAK const PinMap PinMap_QUADSPI[] = {
   //  {PA_1,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QUADSPI)}, // QUADSPI_BK1_IO3 - ETH RMII Ref Clk
   {PB_2,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QUADSPI)}, // QUADSPI_CLK
   {PB_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_NCS
@@ -520,7 +520,7 @@ const PinMap PinMap_QUADSPI[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG1_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG1_FS)}, // USB_OTG_FS_ID
@@ -531,7 +531,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
 #ifdef USE_USB_HS_IN_FS
   {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG2_FS)}, // USB_OTG_HS_SOF
   {PB_12, USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF12_OTG2_FS)}, // USB_OTG_HS_ID
diff --git a/variants/NUCLEO_L031K6/PeripheralPins.c b/variants/NUCLEO_L031K6/PeripheralPins.c
index bca298cec5..ffbdb03901 100644
--- a/variants/NUCLEO_L031K6/PeripheralPins.c
+++ b/variants/NUCLEO_L031K6/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC_IN2 - Connected to STDIO_UART_TX
@@ -60,7 +60,7 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PA_10, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {NC,    NP,    0}
@@ -68,7 +68,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {NC,    NP,    0}
@@ -78,7 +78,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 2, 0)}, // TIM2_CH2
   //  {PA_2,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 3, 0)}, // TIM2_CH3
@@ -106,7 +106,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   //  {PA_2,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_LPUART1)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)}, // STLink TX
   {PA_9,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
@@ -118,7 +118,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_3,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_LPUART1)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
   {PA_10, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
@@ -130,7 +130,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
   {PA_12, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
   {PB_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
@@ -140,7 +140,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
   //  {PA_6,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_LPUART1)},
   {PA_7,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
@@ -152,7 +152,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_12, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_1,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI1)},
@@ -162,7 +162,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_11, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_0,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_SPI1)},
@@ -172,7 +172,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {NC,    NP,    0}
@@ -180,7 +180,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {NC,    NP,    0}
diff --git a/variants/NUCLEO_L053R8/PeripheralPins.c b/variants/NUCLEO_L053R8/PeripheralPins.c
index e7b6e45197..7e3f03239b 100644
--- a/variants/NUCLEO_L053R8/PeripheralPins.c
+++ b/variants/NUCLEO_L053R8/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC_IN2 - STLink Tx
@@ -64,7 +64,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {NC,    NP,    0}
 };
@@ -73,7 +73,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C2)},
@@ -83,7 +83,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C2)},
@@ -95,7 +95,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 2, 0)}, // TIM2_CH2
   //  {PA_2,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 3, 0)}, // TIM2_CH3 - used by STDIO TX
@@ -122,7 +122,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART1)},
   {PA_14, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)}, // Warning: SWCLK
@@ -135,7 +135,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART1)},
   {PA_15, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
@@ -148,7 +148,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART1)},
   {PB_1,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_LPUART1)},
@@ -160,7 +160,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
   {PA_6,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_LPUART1)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART1)},
@@ -172,7 +172,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_12, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
@@ -183,7 +183,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_11, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
@@ -194,7 +194,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)}, // LED
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_10, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -204,7 +204,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -222,7 +222,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DP
   {PA_13, USB, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_USB)}, // USB_NOE
diff --git a/variants/NUCLEO_L073RZ/PeripheralPins.c b/variants/NUCLEO_L073RZ/PeripheralPins.c
index 872f6afbd8..9a38fe7cbc 100644
--- a/variants/NUCLEO_L073RZ/PeripheralPins.c
+++ b/variants/NUCLEO_L073RZ/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1
   {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC_IN2
@@ -64,7 +64,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -74,7 +74,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PA_10, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
   {PB_4,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF7_I2C3)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
@@ -88,7 +88,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF7_I2C3)},
   {PA_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF6_I2C1)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF1_I2C1)},
@@ -103,7 +103,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 2, 0)}, // TIM2_CH2
   {PA_2,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM2, 3, 0)}, // TIM2_CH3
@@ -140,7 +140,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_USART4)},
   //  {PA_2,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_LPUART1)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
@@ -161,7 +161,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_USART4)},
   //  {PA_3,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_LPUART1)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
@@ -182,7 +182,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART1)},
   {PA_15, USART4,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_USART4)},
@@ -197,7 +197,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
   {PA_6,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_LPUART1)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART1)},
@@ -211,7 +211,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_12, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
@@ -222,7 +222,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_11, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
@@ -233,7 +233,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_10, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -243,7 +243,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_SPI1)},
   {PB_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -261,7 +261,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DP
   //  {PA_13, USB, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_USB)}, // USB_NOE
diff --git a/variants/NUCLEO_L152RE/PeripheralPins.c b/variants/NUCLEO_L152RE/PeripheralPins.c
index b028cbb586..c686884963 100644
--- a/variants/NUCLEO_L152RE/PeripheralPins.c
+++ b/variants/NUCLEO_L152RE/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC_IN2 - STLink Tx
@@ -69,7 +69,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2 - LED1
   {NC,    NP,    0}
@@ -79,7 +79,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
@@ -88,7 +88,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
@@ -99,7 +99,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -144,7 +144,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_6,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -157,7 +157,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_7,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -170,7 +170,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -179,7 +179,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -190,7 +190,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_12, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -202,7 +202,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_11, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -214,7 +214,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -225,7 +225,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -244,7 +244,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_DP
   {NC,    NP,    0}
diff --git a/variants/NUCLEO_L412KB/PeripheralPins.c b/variants/NUCLEO_L412KB/PeripheralPins.c
index 316b8c56b6..18e38fb9b8 100644
--- a/variants/NUCLEO_L412KB/PeripheralPins.c
+++ b/variants/NUCLEO_L412KB/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 5, 0)}, // ADC1_IN5
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 6, 0)}, // ADC1_IN6
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 7, 0)}, // ADC1_IN7
@@ -68,7 +68,7 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PA_10, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_4,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -77,7 +77,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_7,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PA_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -88,7 +88,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
   //  {PA_1,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_TIM15, 1, 1)}, // TIM15_CH1N
@@ -115,7 +115,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   //  {PA_2,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -125,7 +125,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_3,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -136,7 +136,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   //  {PB_1,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
@@ -146,7 +146,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_6,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -158,7 +158,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_12, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -167,7 +167,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_11, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -176,7 +176,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_1,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -185,7 +185,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_0,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -200,7 +200,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** QUADSPI ***
 
 #ifdef HAL_QSPI_MODULE_ENABLED
-const PinMap PinMap_QUADSPI[] = {
+WEAK const PinMap PinMap_QUADSPI[] = {
   {PA_2,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_NCS
   {PA_3,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_CLK
   {PA_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_IO3
@@ -213,7 +213,7 @@ const PinMap PinMap_QUADSPI[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF10_USB_FS)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF10_USB_FS)}, // USB_DP
   {PA_13, USB, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_USB_FS)}, // USB_NOE
diff --git a/variants/NUCLEO_L432KC/PeripheralPins.c b/variants/NUCLEO_L432KC/PeripheralPins.c
index 75c64d0cda..df73aae963 100644
--- a/variants/NUCLEO_L432KC/PeripheralPins.c
+++ b/variants/NUCLEO_L432KC/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 5, 0)}, // ADC1_IN5
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 6, 0)}, // ADC1_IN6
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 7, 0)}, // ADC1_IN7 - STLink TX
@@ -58,7 +58,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC1_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC1_OUT2
   {NC,    NP,    0}
@@ -68,7 +68,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PA_10, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_4,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -77,7 +77,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_7,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PA_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -88,7 +88,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
   {PA_1,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_TIM15, 1, 1)}, // TIM15_CH1N
@@ -115,7 +115,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   //  {PA_2,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // STLink TX
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -125,7 +125,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_3,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -136,7 +136,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   //  {PB_1,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
@@ -146,7 +146,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_6,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -158,7 +158,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_12, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -168,7 +168,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_11, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -178,7 +178,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_1,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -188,7 +188,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   //  {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // STLink RX
@@ -201,14 +201,14 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {NC,    NP,    0}
 };
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {NC,    NP,    0}
 };
@@ -219,7 +219,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** QUADSPI ***
 
 #ifdef HAL_QSPI_MODULE_ENABLED
-const PinMap PinMap_QUADSPI[] = {
+WEAK const PinMap PinMap_QUADSPI[] = {
   {PA_2,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_NCS
   {PA_3,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_CLK
   {PA_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_IO3
@@ -233,7 +233,7 @@ const PinMap PinMap_QUADSPI[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF10_USB_FS)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF10_USB_FS)}, // USB_DP
   //  {PA_13, USB, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_USB_FS)}, // USB_NOE
diff --git a/variants/NUCLEO_L452RE/PeripheralPins.c b/variants/NUCLEO_L452RE/PeripheralPins.c
index 854600d658..48b49b4cae 100644
--- a/variants/NUCLEO_L452RE/PeripheralPins.c
+++ b/variants/NUCLEO_L452RE/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 5, 0)}, // ADC1_IN5
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 6, 0)}, // ADC1_IN6
   //  {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 7, 0)}, // ADC1_IN7
@@ -63,7 +63,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC1_OUT1
   {NC,    NP,    0}
 };
@@ -72,7 +72,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PA_10, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_4,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   //  {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -88,7 +88,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_7,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PA_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   //  {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -106,7 +106,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
   //  {PA_1,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF14_TIM15, 1, 1)}, // TIM15_CH1N
@@ -152,7 +152,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_2,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -169,7 +169,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_3,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -186,7 +186,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_15, UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
@@ -201,7 +201,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_6,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   //  {PA_6,  USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -217,7 +217,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_12, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -230,7 +230,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_11, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -243,7 +243,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_1,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -256,7 +256,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -271,7 +271,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_5,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_CAN1)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -281,7 +281,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_6,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF8_CAN1)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -295,7 +295,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** QUADSPI ***
 
 #ifdef HAL_QSPI_MODULE_ENABLED
-const PinMap PinMap_QUADSPI[] = {
+WEAK const PinMap PinMap_QUADSPI[] = {
   {PA_2,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_NCS
   {PA_3,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_CLK
   {PA_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_IO3
@@ -311,7 +311,7 @@ const PinMap PinMap_QUADSPI[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF10_USB_FS)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF10_USB_FS)}, // USB_DP
   //  {PA_13, USB, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_USB_FS)}, // USB_NOE
diff --git a/variants/NUCLEO_L476RG/PeripheralPins.c b/variants/NUCLEO_L476RG/PeripheralPins.c
index 6e88e8cb0f..b6e8ba896a 100644
--- a/variants/NUCLEO_L476RG/PeripheralPins.c
+++ b/variants/NUCLEO_L476RG/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG_ADC_CONTROL, GPIO_NOPULL, 0, 5, 0)}, // ADC1_IN5
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG_ADC_CONTROL, GPIO_NOPULL, 0, 5, 0)}, // ADC2_IN5
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG_ADC_CONTROL, GPIO_NOPULL, 0, 6, 0)}, // ADC1_IN6
@@ -84,7 +84,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC1_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC1_OUT2 - LED
   {NC,    NP,    0}
@@ -94,7 +94,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
@@ -105,7 +105,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
@@ -118,7 +118,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1 - (used by us_ticker)
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -185,7 +185,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -202,7 +202,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -219,7 +219,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   //  {PA_15, UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
@@ -234,7 +234,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_6,  USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -250,7 +250,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -262,7 +262,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -274,7 +274,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // LED
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -286,7 +286,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -300,7 +300,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {NC,    NP,    0}
@@ -308,7 +308,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {NC,    NP,    0}
@@ -320,7 +320,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** QUADSPI ***
 
 #ifdef HAL_QSPI_MODULE_ENABLED
-const PinMap PinMap_QUADSPI[] = {
+WEAK const PinMap PinMap_QUADSPI[] = {
   {PA_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_IO3
   {PA_7,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_IO2
   {PB_0,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_IO1
@@ -334,7 +334,7 @@ const PinMap PinMap_QUADSPI[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
diff --git a/variants/NUCLEO_L496ZG/PeripheralPins.c b/variants/NUCLEO_L496ZG/PeripheralPins.c
index f0ef70be52..26cf9b72af 100644
--- a/variants/NUCLEO_L496ZG/PeripheralPins.c
+++ b/variants/NUCLEO_L496ZG/PeripheralPins.c
@@ -41,7 +41,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 5, 0)}, // ADC1_IN5
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 5, 0)}, // ADC2_IN5
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 6, 0)}, // ADC1_IN6
@@ -93,7 +93,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC1_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC1_OUT2
   {NC,    NP,    0}
@@ -103,7 +103,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_4,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   //  {PB_7,  I2C4, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF5_I2C4)},
@@ -126,7 +126,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_7,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   //  {PB_6,  I2C4, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF5_I2C4)},
@@ -148,7 +148,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -243,7 +243,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_2,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -267,7 +267,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_3,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -292,7 +292,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_15, UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
@@ -313,7 +313,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_6,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_6,  USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -334,7 +334,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // D11
   {PA_12, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -352,7 +352,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // D12
   {PA_11, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -369,7 +369,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_1,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // D13
   {PA_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_SPI2)},
@@ -388,7 +388,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -407,7 +407,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_5,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF3_CAN2)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -418,7 +418,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_6,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF8_CAN2)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -433,7 +433,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** QUADSPI ***
 
 #ifdef HAL_QSPI_MODULE_ENABLED
-const PinMap PinMap_QUADSPI[] = {
+WEAK const PinMap PinMap_QUADSPI[] = {
   {PA_2,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_NCS
   {PA_3,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_CLK
   {PA_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_IO3
@@ -473,7 +473,7 @@ const PinMap PinMap_QUADSPI[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
diff --git a/variants/NUCLEO_L4R5ZI/PeripheralPins.c b/variants/NUCLEO_L4R5ZI/PeripheralPins.c
index b51d334388..96dbe06a8a 100644
--- a/variants/NUCLEO_L4R5ZI/PeripheralPins.c
+++ b/variants/NUCLEO_L4R5ZI/PeripheralPins.c
@@ -41,7 +41,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 5, 0)}, // ADC1_IN5
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 6, 0)}, // ADC1_IN6
   {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 7, 0)}, // ADC1_IN7
@@ -65,7 +65,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC1_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC1_OUT2
   {NC,    NP,    0}
@@ -75,7 +75,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_4,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   //  {PB_7,  I2C4, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF5_I2C4)},
@@ -97,7 +97,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_7,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   //  {PB_6,  I2C4, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF5_I2C4)},
@@ -118,7 +118,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -213,7 +213,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_2,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -237,7 +237,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_3,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -262,7 +262,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_15, UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
@@ -283,7 +283,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_6,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_6,  USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -304,7 +304,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // D11
   {PA_12, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -323,7 +323,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // D12
   {PA_11, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //{PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -340,7 +340,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_1,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // D13
   {PA_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_SPI2)},
@@ -359,7 +359,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -378,7 +378,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PD_0,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -387,7 +387,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   {PD_1,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -402,7 +402,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
diff --git a/variants/PILL_F103XX/PeripheralPins.c b/variants/PILL_F103XX/PeripheralPins.c
index 82d04b2853..2cceb9c59e 100644
--- a/variants/PILL_F103XX/PeripheralPins.c
+++ b/variants/PILL_F103XX/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
@@ -70,7 +70,7 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_I2C1_ENABLE)},
 #ifndef ARDUINO_BLUEPILL_F103C6
@@ -81,7 +81,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_NONE)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, AFIO_I2C1_ENABLE)},
 #ifndef ARDUINO_BLUEPILL_F103C6
@@ -94,7 +94,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_TIM2_PARTIAL_2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE, 2, 0)}, // TIM2_CH2
@@ -146,7 +146,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_6,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_USART1_ENABLE)},
@@ -158,7 +158,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_NONE)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_NONE)},
   {PB_7,  USART1,  STM_PIN_DATA(STM_MODE_INPUT, GPIO_PULLUP, AFIO_USART1_ENABLE)},
@@ -170,7 +170,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
 #ifndef ARDUINO_BLUEPILL_F103C6
@@ -182,7 +182,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
 #ifndef ARDUINO_BLUEPILL_F103C6
@@ -196,7 +196,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
 #ifndef ARDUINO_BLUEPILL_F103C6
@@ -207,7 +207,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
 #ifndef ARDUINO_BLUEPILL_F103C6
@@ -218,7 +218,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
 #ifndef ARDUINO_BLUEPILL_F103C6
@@ -229,7 +229,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_SPI1_ENABLE)},
 #ifndef ARDUINO_BLUEPILL_F103C6
@@ -242,7 +242,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   {PA_11, CAN1, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)},
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_CAN1_2)},
   {NC,    NP,    0}
@@ -250,7 +250,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, AFIO_NONE)},
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, AFIO_CAN1_2)},
   {NC,    NP,    0}
@@ -264,7 +264,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, AFIO_NONE)}, // USB_DP
   {NC,    NP,    0}
diff --git a/variants/PILL_F303XX/PeripheralPins.c b/variants/PILL_F303XX/PeripheralPins.c
index 20f01ffc60..19f625afe8 100644
--- a/variants/PILL_F303XX/PeripheralPins.c
+++ b/variants/PILL_F303XX/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC1_IN2
   {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 3, 0)}, // ADC1_IN3
@@ -63,7 +63,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -73,7 +73,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PA_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
   {PA_14, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -84,7 +84,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_9,  I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
   {PA_15, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -97,7 +97,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
   //  {PA_1,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM15, 1, 1)}, // TIM15_CH1N
@@ -172,7 +172,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_14, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -184,7 +184,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_15, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -196,7 +196,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB_DP
   {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -205,7 +205,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB_DM
   {PA_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -217,7 +217,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -227,7 +227,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -237,7 +237,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -247,7 +247,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -260,7 +260,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   //  {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)}, // USB_DM
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)},
   {NC,    NP,    0}
@@ -268,7 +268,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   //  {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)}, // USB_DP
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)},
   {NC,    NP,    0}
@@ -282,7 +282,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF14_USB)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF14_USB)}, // USB_DP
   {NC,    NP,    0}
diff --git a/variants/PNUCLEO_WB55RG/PeripheralPins.c b/variants/PNUCLEO_WB55RG/PeripheralPins.c
index 4917fd5ec1..063d8259d8 100644
--- a/variants/PNUCLEO_WB55RG/PeripheralPins.c
+++ b/variants/PNUCLEO_WB55RG/PeripheralPins.c
@@ -23,7 +23,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 5, 0)}, // ADC1_IN5
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 6, 0)}, // ADC1_IN6
   //{PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 7, 0)}, // ADC1_IN7
@@ -49,7 +49,7 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PA_10, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_4,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -62,7 +62,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_7,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PA_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -77,7 +77,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
   {PA_2,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 3, 0)}, // TIM2_CH3
@@ -110,7 +110,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_5,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
@@ -122,7 +122,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PA_12, LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
@@ -134,7 +134,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_1,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PB_3,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -144,7 +144,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_6,  LPUART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_LPUART1)},
   {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PB_4,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -156,7 +156,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_12, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -168,7 +168,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_11, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -179,7 +179,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_1,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -192,7 +192,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_2,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -210,7 +210,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** QUADSPI ***
 
 #ifdef HAL_QSPI_MODULE_ENABLED
-const PinMap PinMap_QUADSPI[] = {
+WEAK const PinMap PinMap_QUADSPI[] = {
   {PA_2,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_NCS
   {PA_3,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_CLK
   {PA_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_IO3
@@ -226,7 +226,7 @@ const PinMap PinMap_QUADSPI[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF10_USB)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF10_USB)}, // USB_DP
   //{PA_13, USB, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_USB)}, // USB_NOE
diff --git a/variants/PRNTR_F407_V1/PeripheralPins.c b/variants/PRNTR_F407_V1/PeripheralPins.c
index 31fd5e6d07..0ccceab2ab 100644
--- a/variants/PRNTR_F407_V1/PeripheralPins.c
+++ b/variants/PRNTR_F407_V1/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   //  {PA_0,  ADC3,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC3_IN0
@@ -88,7 +88,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -98,7 +98,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   //  {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // E1_PWM
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   //  {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)}, // BED_PWM
@@ -108,7 +108,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   //  {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   //  {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // E0_PWM
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -120,7 +120,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1 - E0 TEMP
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1 - E0 TEMP
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2 - E1 TEMP
@@ -196,7 +196,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   //  {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},  // E0_TEMP
   //  {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // BED_TEMP
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},   // USB
@@ -213,7 +213,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},  // E1_TEMP
   //  {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -230,7 +230,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   //  {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // E1_TEMP
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB
   //  {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)}, // PWM4
@@ -241,7 +241,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   //  {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // E0_TEMP
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB
   //  {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)}, // Z_STEP
@@ -254,7 +254,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -266,7 +266,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -278,7 +278,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -290,7 +290,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -304,7 +304,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   //  {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // USB
   //  {PB_5,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)}, // SPI
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -315,7 +315,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   //  {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)}, // USB
   //  {PB_6,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)}, // E0_PWM
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -328,7 +328,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** ETHERNET ***
 // Ethernet is not enabled on this board.
 #ifdef HAL_ETH_MODULE_ENABLED
-const PinMap PinMap_Ethernet[] = {
+WEAK const PinMap PinMap_Ethernet[] = {
   //  {PA_0,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_CRS
   //  {PA_1,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_REF_CLK|ETH_RX_CLK
   //  {PA_2,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_MDIO
@@ -357,7 +357,7 @@ const PinMap PinMap_Ethernet[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   //{PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   //{PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS - UART
   //{PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID   - UART
@@ -369,7 +369,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 
 // USB HS is not enabled on this board
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
 #ifdef USE_USB_HS_IN_FS
   //  {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_SOF
   //  {PB_12, USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_ID
diff --git a/variants/RAK811_TRACKER/PeripheralPins.c b/variants/RAK811_TRACKER/PeripheralPins.c
index a4f55f9b10..0367e680a2 100644
--- a/variants/RAK811_TRACKER/PeripheralPins.c
+++ b/variants/RAK811_TRACKER/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   //  {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1
   {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC_IN2 - ADC_VBAT
@@ -62,7 +62,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   //  {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1 - RADIO_RF_CTX_PA
   //  {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2 - RADIO_SCLK
   {NC,    NP,    0}
@@ -72,7 +72,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   //  {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // RADIO_RF_CBT_HF
   {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   //  {PB_11, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)}, // GPS_UART_RX
@@ -81,7 +81,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   //  {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, // RADIO_RF_CRX_RX
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   //  {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)}, // GPS_UART_TX
@@ -92,7 +92,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
   //  {PA_2,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 3, 0)}, // TIM2_CH3 - ADC_VBAT
@@ -129,7 +129,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   //  {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // ADC_VBAT
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // UART_TX
   //  {PB_6,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // RADIO_RF_CRX_RX
@@ -139,7 +139,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)}, // RADIO_DIO_2
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // UART_RX
   //  {PB_7,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // RADIO_RF_CBT_HF
@@ -149,7 +149,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // LED1
   //  {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)}, // LIS3DH_INT1_PIN
@@ -158,7 +158,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // RADIO_DIO_0
   //  {PB_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)}, // RADIO_RESET
@@ -169,7 +169,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // RADIO_MOSI
   //  {PA_12, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // LED1
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -179,7 +179,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // RADIO_MISO
   //  {PA_11, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // RADIO_DIO_0
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // LED2
@@ -189,7 +189,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // RADIO_SCLK
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_13, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)}, // RADIO_RESET
@@ -198,7 +198,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   //  {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // RADIO_RF_CTX_PA
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)}, // GPS_POWER_ON_PIN
   {PB_12, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -215,7 +215,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF10_USB)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF10_USB)}, // USB_DP
   {NC,    NP,    0}
diff --git a/variants/REMRAM_V1/PeripheralPins.c b/variants/REMRAM_V1/PeripheralPins.c
index 3ecf28c994..2ce04c05b2 100644
--- a/variants/REMRAM_V1/PeripheralPins.c
+++ b/variants/REMRAM_V1/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   //  {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   //  {PA_0,  ADC3,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC3_IN0
@@ -88,7 +88,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   //  {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   //  {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -98,7 +98,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   //  {PB_7,  I2C4, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF11_I2C4)},
   //  {PB_9,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -111,7 +111,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   //  {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   //  {PB_6,  I2C4, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF11_I2C4)},
@@ -126,7 +126,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -202,7 +202,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   //  {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -229,7 +229,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_8,  UART7,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_UART7)},
@@ -256,7 +256,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   //  {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   //  {PA_15, UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
@@ -272,7 +272,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   //  {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   //  {PB_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
@@ -290,7 +290,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_7,  SPI6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_SPI6)},
   //  {PB_2,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_SPI3)},
@@ -310,7 +310,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_6,  SPI6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_SPI6)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -326,7 +326,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_5,  SPI6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_SPI6)},
   //  {PA_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
@@ -345,7 +345,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   //  {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_4,  SPI6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_SPI6)},
@@ -365,7 +365,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   //  {PA_8,  CAN3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF11_CAN3)},
   //  {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   //  {PB_3,  CAN3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF11_CAN3)},
@@ -378,7 +378,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   //  {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   //  {PA_15, CAN3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF11_CAN3)},
   //  {PB_4,  CAN3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF11_CAN3)},
@@ -393,7 +393,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** ETHERNET ***
 
 #ifdef HAL_ETH_MODULE_ENABLED
-const PinMap PinMap_Ethernet[] = {
+WEAK const PinMap PinMap_Ethernet[] = {
   //  {PA_0,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_CRS
   //  {PA_1,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_REF_CLK|ETH_RX_CLK
   //  {PA_2,  ETH, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF11_ETH)}, // ETH_MDIO
@@ -420,7 +420,7 @@ const PinMap PinMap_Ethernet[] = {
 //*** QUADSPI ***
 
 #ifdef HAL_QSPI_MODULE_ENABLED
-const PinMap PinMap_QUADSPI[] = {
+WEAK const PinMap PinMap_QUADSPI[] = {
   //  {PA_1,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QUADSPI)}, // QUADSPI_BK1_IO3
   //  {PB_2,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QUADSPI)}, // QUADSPI_CLK
   //  {PB_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QUADSPI)}, // QUADSPI_BK1_NCS
@@ -443,7 +443,7 @@ const PinMap PinMap_QUADSPI[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
@@ -454,7 +454,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
 #ifdef USE_USB_HS_IN_FS
   {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_SOF
   {PB_12, USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_ID
diff --git a/variants/RUMBA32_F446VE/PeripheralPins.c b/variants/RUMBA32_F446VE/PeripheralPins.c
index f21c83a1f4..ed1b9de53e 100644
--- a/variants/RUMBA32_F446VE/PeripheralPins.c
+++ b/variants/RUMBA32_F446VE/PeripheralPins.c
@@ -39,7 +39,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   //  {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   //  {PA_0,  ADC2,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC2_IN0
   //  {PA_0,  ADC3,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC3_IN0
@@ -87,7 +87,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   //  {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   //  {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2 - LD2
   {NC,   NP,    0}
@@ -97,7 +97,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   //  {PB_3,  I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
   //  {PB_4,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   //  {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -110,7 +110,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   //  {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   //  {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -123,7 +123,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)},  // TIM2_CH1
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)},  // TIM5_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)},  // TIM2_CH2
@@ -188,7 +188,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   //  {PA_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -203,7 +203,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -218,7 +218,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   //  {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   //  {PA_15, UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
@@ -229,7 +229,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   //  {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   //  {PB_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
@@ -242,7 +242,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_0,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_SPI3)},
   //  {PB_2,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_SPI3)},
@@ -258,7 +258,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -270,7 +270,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -284,7 +284,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -299,7 +299,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   //  {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   //  {PB_5,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   //  {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -309,7 +309,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   //  {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   //  {PB_6,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   //  {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -325,7 +325,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** QUADSPI ***
 
 #ifdef HAL_QSPI_MODULE_ENABLED
-const PinMap PinMap_QUADSPI[] = {
+WEAK const PinMap PinMap_QUADSPI[] = {
   //  {PA_1,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QSPI)},  // QUADSPI_BK1_IO3
   //  {PB_2,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QSPI)},  // QUADSPI_CLK
   //  {PB_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QSPI)},  // QUADSPI_BK1_NCS
@@ -339,7 +339,7 @@ const PinMap PinMap_QUADSPI[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   //  {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   //  {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)}, // USB_OTG_FS_VBUS
   //  {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
@@ -350,7 +350,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
   {NC,    NP,    0}
 };
 #endif
diff --git a/variants/SPARKY_F303CC/PeripheralPins.c b/variants/SPARKY_F303CC/PeripheralPins.c
index 62b6420403..bb6ae26499 100644
--- a/variants/SPARKY_F303CC/PeripheralPins.c
+++ b/variants/SPARKY_F303CC/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC1_IN2
   {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 3, 0)}, // ADC1_IN3
@@ -63,7 +63,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -73,7 +73,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   {PA_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
   {PA_14, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -84,7 +84,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   {PA_9,  I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
   {PA_15, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -97,7 +97,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
   //  {PA_1,  TIM15,  STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_TIM15, 1, 1)}, // TIM15_CH1N
@@ -172,7 +172,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // SCL MPU-9150
   {PA_14, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -184,7 +184,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // SDA MPU-9150
   {PA_15, USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -196,7 +196,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB_DP
   {PB_14, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -205,7 +205,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)}, // USB_DM
   {PA_13, USART3,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
@@ -217,7 +217,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -227,7 +227,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -237,7 +237,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -247,7 +247,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -260,7 +260,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   //  {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)}, // USB_DM
   {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)},
   {NC,    NP,    0}
@@ -268,7 +268,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   //  {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)}, // USB_DP
   {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)},
   {NC,    NP,    0}
@@ -282,7 +282,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB[] = {
+WEAK const PinMap PinMap_USB[] = {
   {PA_11, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF14_USB)}, // USB_DM
   {PA_12, USB, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF14_USB)}, // USB_DP
   {NC,    NP,    0}
diff --git a/variants/ST3DP001_EVAL/PeripheralPins.c b/variants/ST3DP001_EVAL/PeripheralPins.c
index 001aca471d..721792f84f 100644
--- a/variants/ST3DP001_EVAL/PeripheralPins.c
+++ b/variants/ST3DP001_EVAL/PeripheralPins.c
@@ -24,7 +24,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   {PA_0,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
   {PA_1,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
   {PA_2,  ADC1,  STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC1_IN2
@@ -50,7 +50,7 @@ const PinMap PinMap_ADC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   //  {PB_3,  I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF9_I2C2)},
   //  {PB_4,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF9_I2C3)},
   {PB_7,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -61,7 +61,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   //  {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   //  {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -73,7 +73,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   //  {PA_0,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
   //  {PA_0,  TIM5,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
   //  {PA_1,  TIM2,   STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
@@ -134,7 +134,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   //  {PA_2,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_9,  USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   //  {PA_11, USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
@@ -146,7 +146,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   //  {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   //  {PA_12, USART6,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
@@ -158,7 +158,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   //  {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PD_4,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -167,7 +167,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   //  {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   {PD_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
@@ -178,7 +178,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -193,7 +193,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -207,7 +207,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -222,7 +222,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -244,7 +244,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   //  {PA_8,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
   //  {PA_9,  USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
   //  {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
diff --git a/variants/VAKE_F446VE/PeripheralPins.c b/variants/VAKE_F446VE/PeripheralPins.c
index ee5f1d00c2..91c73b4461 100644
--- a/variants/VAKE_F446VE/PeripheralPins.c
+++ b/variants/VAKE_F446VE/PeripheralPins.c
@@ -40,7 +40,7 @@
 //*** ADC ***
 
 #ifdef HAL_ADC_MODULE_ENABLED
-const PinMap PinMap_ADC[] = {
+WEAK const PinMap PinMap_ADC[] = {
   /*
    * PWR_MON  ADC1_IN2  PA2
    * THERM0 ADC1_IN13 PC3
@@ -96,7 +96,7 @@ const PinMap PinMap_ADC[] = {
 //*** DAC ***
 
 #ifdef HAL_DAC_MODULE_ENABLED
-const PinMap PinMap_DAC[] = {
+WEAK const PinMap PinMap_DAC[] = {
   //  {PA_4,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // DAC_OUT1
   //  {PA_5,  DAC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // DAC_OUT2
   {NC,    NP,    0}
@@ -106,7 +106,7 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SDA[] = {
+WEAK const PinMap PinMap_I2C_SDA[] = {
   /*
    * I2C1_SCL PB8 (Rpi)
    * I2C1_SDA PB9 (Rpi)
@@ -125,7 +125,7 @@ const PinMap PinMap_I2C_SDA[] = {
 #endif
 
 #ifdef HAL_I2C_MODULE_ENABLED
-const PinMap PinMap_I2C_SCL[] = {
+WEAK const PinMap PinMap_I2C_SCL[] = {
   //  {PA_8,  I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
   //  {PB_6,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
   {PB_8,  I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
@@ -140,7 +140,7 @@ const PinMap PinMap_I2C_SCL[] = {
 //*** PWM ***
 
 #ifdef HAL_TIM_MODULE_ENABLED
-const PinMap PinMap_PWM[] = {
+WEAK const PinMap PinMap_PWM[] = {
   /*
    * F2_PWM TIM2_CH2  PA1
    * F1_PWM TIM2_CH1  PA0
@@ -227,7 +227,7 @@ const PinMap PinMap_PWM[] = {
 //*** SERIAL ***
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_TX[] = {
+WEAK const PinMap PinMap_UART_TX[] = {
   /*
    * USART1_TX  PA9
    * USART1_RX  PA10
@@ -249,7 +249,7 @@ const PinMap PinMap_UART_TX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RX[] = {
+WEAK const PinMap PinMap_UART_RX[] = {
   {PA_1,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
   //  {PA_3,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   {PA_10, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
@@ -267,7 +267,7 @@ const PinMap PinMap_UART_RX[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_RTS[] = {
+WEAK const PinMap PinMap_UART_RTS[] = {
   //  {PA_1,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_12, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   //  {PA_15, UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
@@ -280,7 +280,7 @@ const PinMap PinMap_UART_RTS[] = {
 #endif
 
 #ifdef HAL_UART_MODULE_ENABLED
-const PinMap PinMap_UART_CTS[] = {
+WEAK const PinMap PinMap_UART_CTS[] = {
   //  {PA_0,  USART2,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
   //  {PA_11, USART1,  STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
   //  {PB_0,  UART4,   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_UART4)},
@@ -295,7 +295,7 @@ const PinMap PinMap_UART_CTS[] = {
 //*** SPI ***
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MOSI[] = {
+WEAK const PinMap PinMap_SPI_MOSI[] = {
   /*
    * SPI3_MOSI  PB5 NA
    * SPI3_MISO  PB4 NA
@@ -326,7 +326,7 @@ const PinMap PinMap_SPI_MOSI[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_MISO[] = {
+WEAK const PinMap PinMap_SPI_MISO[] = {
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
@@ -341,7 +341,7 @@ const PinMap PinMap_SPI_MISO[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SCLK[] = {
+WEAK const PinMap PinMap_SPI_SCLK[] = {
   {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_9,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   //  {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -358,7 +358,7 @@ const PinMap PinMap_SPI_SCLK[] = {
 #endif
 
 #ifdef HAL_SPI_MODULE_ENABLED
-const PinMap PinMap_SPI_SSEL[] = {
+WEAK const PinMap PinMap_SPI_SSEL[] = {
   //  {PA_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PA_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   //  {PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
@@ -376,7 +376,7 @@ const PinMap PinMap_SPI_SSEL[] = {
 //*** CAN ***
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_RD[] = {
+WEAK const PinMap PinMap_CAN_RD[] = {
   //  {PA_11, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   //  {PB_5,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   //  {PB_8,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -387,7 +387,7 @@ const PinMap PinMap_CAN_RD[] = {
 #endif
 
 #ifdef HAL_CAN_MODULE_ENABLED
-const PinMap PinMap_CAN_TD[] = {
+WEAK const PinMap PinMap_CAN_TD[] = {
   //  {PA_12, CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
   //  {PB_6,  CAN2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN2)},
   //  {PB_9,  CAN1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN1)},
@@ -402,7 +402,7 @@ const PinMap PinMap_CAN_TD[] = {
 //*** QUADSPI ***
 
 #ifdef HAL_QSPI_MODULE_ENABLED
-const PinMap PinMap_QUADSPI[] = {
+WEAK const PinMap PinMap_QUADSPI[] = {
   //  {PA_1,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QSPI)}, // QUADSPI_BK1_IO3
   //  {PB_2,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF9_QSPI)}, // QUADSPI_CLK
   //  {PB_6,  QUADSPI, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_QSPI)}, // QUADSPI_BK1_NCS
@@ -425,7 +425,7 @@ const PinMap PinMap_QUADSPI[] = {
 //*** USB ***
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_FS[] = {
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
   /*
    * USB_OTG_FS_DM  PA11
    * USB_OTG_FS_DP  PA12
@@ -440,7 +440,7 @@ const PinMap PinMap_USB_OTG_FS[] = {
 #endif
 
 #ifdef HAL_PCD_MODULE_ENABLED
-const PinMap PinMap_USB_OTG_HS[] = {
+WEAK const PinMap PinMap_USB_OTG_HS[] = {
   //  {PA_3,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_HS)}, // USB_OTG_HS_ULPI_D0
 #ifdef USE_USB_HS_IN_FS
   //  {PA_4,  USB_OTG_HS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_OTG_HS_FS)}, // USB_OTG_HS_SOF