diff --git a/cores/arduino/HardwareSerial.cpp b/cores/arduino/HardwareSerial.cpp
index 9200431340..dfa9b8d759 100644
--- a/cores/arduino/HardwareSerial.cpp
+++ b/cores/arduino/HardwareSerial.cpp
@@ -95,7 +95,11 @@
   #endif
 
   #if defined(HAVE_HWSERIAL10)
-    HardwareSerial Serial10(UART10);
+    #if defined(USART10)
+      HardwareSerial Serial10(USART10);
+    #else
+      HardwareSerial Serial10(UART10);
+    #endif
     void serialEvent10() __attribute__((weak));
   #endif
 
@@ -218,7 +222,7 @@ HardwareSerial::HardwareSerial(void *peripheral, HalfDuplexMode_t halfDuplex)
                     setTx(PIN_SERIAL8_TX);
                   } else
 #endif
-#if defined(PIN_SERIAL9_TX) && defined(UART9)
+#if defined(PIN_SERIAL9_TX) && defined(UART9_BASE)
                     if (peripheral == UART9) {
 #if defined(PIN_SERIAL9_RX)
                       setRx(PIN_SERIAL9_RX);
@@ -226,8 +230,14 @@ HardwareSerial::HardwareSerial(void *peripheral, HalfDuplexMode_t halfDuplex)
                       setTx(PIN_SERIAL9_TX);
                     } else
 #endif
-#if defined(PIN_SERIAL10_TX) && defined(UART10)
-                      if (peripheral == UART10) {
+#if defined(PIN_SERIAL10_TX) &&\
+   (defined(USART10_BASE) || defined(UART10_BASE))
+#if defined(USART10_BASE)
+                      if (peripheral == USART10)
+#elif defined(UART10_BASE)
+                      if (peripheral == UART10)
+#endif
+                      {
 #if defined(PIN_SERIAL10_RX)
                         setRx(PIN_SERIAL10_RX);
 #endif
diff --git a/cores/arduino/HardwareSerial.h b/cores/arduino/HardwareSerial.h
index 4d015e9e93..3271ebade5 100644
--- a/cores/arduino/HardwareSerial.h
+++ b/cores/arduino/HardwareSerial.h
@@ -173,16 +173,38 @@ class HardwareSerial : public Stream {
     void configForLowPower(void);
 };
 
-extern HardwareSerial Serial1;
-extern HardwareSerial Serial2;
-extern HardwareSerial Serial3;
-extern HardwareSerial Serial4;
-extern HardwareSerial Serial5;
-extern HardwareSerial Serial6;
-extern HardwareSerial Serial7;
-extern HardwareSerial Serial8;
-extern HardwareSerial Serial9;
-extern HardwareSerial Serial10;
-extern HardwareSerial SerialLP1;
+#if defined(USART1)
+  extern HardwareSerial Serial1;
+#endif
+#if defined(USART2)
+  extern HardwareSerial Serial2;
+#endif
+#if defined(USART3)
+  extern HardwareSerial Serial3;
+#endif
+#if defined(UART4) || defined(USART4)
+  extern HardwareSerial Serial4;
+#endif
+#if defined(UART5) || defined(USART5)
+  extern HardwareSerial Serial5;
+#endif
+#if defined(USART6)
+  extern HardwareSerial Serial6;
+#endif
+#if defined(UART7) || defined(USART7)
+  extern HardwareSerial Serial7;
+#endif
+#if defined(UART8) || defined(USART8)
+  extern HardwareSerial Serial8;
+#endif
+#if defined(UART9)
+  extern HardwareSerial Serial9;
+#endif
+#if defined(UART10) || defined(USART10)
+  extern HardwareSerial Serial10;
+#endif
+#if defined(LPUART1)
+  extern HardwareSerial SerialLP1;
+#endif
 
 #endif
diff --git a/cores/arduino/WSerial.cpp b/cores/arduino/WSerial.cpp
index dfbda4320d..4a83f999c9 100644
--- a/cores/arduino/WSerial.cpp
+++ b/cores/arduino/WSerial.cpp
@@ -48,7 +48,7 @@ WEAK void serialEventRun(void)
   }
 #endif
 #if defined(HAVE_HWSERIAL10)
-  if (serialEventl10 && Serial10.available()) {
+  if (serialEvent10 && Serial10.available()) {
     serialEvent10();
   }
 #endif
diff --git a/cores/arduino/WSerial.h b/cores/arduino/WSerial.h
index 5cd5e9ef07..436b8ec2e1 100644
--- a/cores/arduino/WSerial.h
+++ b/cores/arduino/WSerial.h
@@ -40,7 +40,7 @@
 
 #if defined(HAL_UART_MODULE_ENABLED) && !defined(HAL_UART_MODULE_ONLY)
   #if !defined(HWSERIAL_NONE) && defined(SERIAL_UART_INSTANCE)
-    #if SERIAL_UART_INSTANCE == 0
+    #if SERIAL_UART_INSTANCE == 0 || SERIAL_UART_INSTANCE == 101
       #define ENABLE_HWSERIALLP1
       #if !defined(Serial)
         #define Serial SerialLP1
@@ -164,22 +164,44 @@
     #endif
   #endif
   #if defined(ENABLE_HWSERIAL10)
-    #if defined(UART10_BASE)
+    #if defined(USART10_BASE) || defined(UART10_BASE)
       #define HAVE_HWSERIAL10
     #endif
   #endif
 
-  extern void serialEvent1(void) __attribute__((weak));
-  extern void serialEvent2(void) __attribute__((weak));
-  extern void serialEvent3(void) __attribute__((weak));
-  extern void serialEvent4(void) __attribute__((weak));
-  extern void serialEvent5(void) __attribute__((weak));
-  extern void serialEvent6(void) __attribute__((weak));
-  extern void serialEvent7(void) __attribute__((weak));
-  extern void serialEvent8(void) __attribute__((weak));
-  extern void serialEvent9(void) __attribute__((weak));
-  extern void serialEvent10(void) __attribute__((weak));
-  extern void serialEventLP1(void) __attribute__((weak));
+  #if defined(HAVE_HWSERIAL1)
+    extern void serialEvent1(void) __attribute__((weak));
+  #endif
+  #if defined(HAVE_HWSERIAL2)
+    extern void serialEvent2(void) __attribute__((weak));
+  #endif
+  #if defined(HAVE_HWSERIAL3)
+    extern void serialEvent3(void) __attribute__((weak));
+  #endif
+  #if defined(HAVE_HWSERIAL4)
+    extern void serialEvent4(void) __attribute__((weak));
+  #endif
+  #if defined(HAVE_HWSERIAL5)
+    extern void serialEvent5(void) __attribute__((weak));
+  #endif
+  #if defined(HAVE_HWSERIAL6)
+    extern void serialEvent6(void) __attribute__((weak));
+  #endif
+  #if defined(HAVE_HWSERIAL7)
+    extern void serialEvent7(void) __attribute__((weak));
+  #endif
+  #if defined(HAVE_HWSERIAL8)
+    extern void serialEvent8(void) __attribute__((weak));
+  #endif
+  #if defined(HAVE_HWSERIAL9)
+    extern void serialEvent9(void) __attribute__((weak));
+  #endif
+  #if defined(HAVE_HWSERIAL10)
+    extern void serialEvent10(void) __attribute__((weak));
+  #endif
+  #if defined(HAVE_HWSERIALLP1)
+    extern void serialEventLP1(void) __attribute__((weak));
+  #endif
 #endif /* HAL_UART_MODULE_ENABLED  && !HAL_UART_MODULE_ONLY */
 
 extern void serialEventRun(void);
diff --git a/keywords.txt b/keywords.txt
index 019b437912..3bb267ac17 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -796,6 +796,7 @@ USART7	LITERAL1
 UART8	LITERAL1
 UART9	LITERAL1
 UART10	LITERAL1
+USART10	LITERAL1
 LPUART1	LITERAL1
 
 # Port
diff --git a/libraries/SrcWrapper/src/stm32/uart.c b/libraries/SrcWrapper/src/stm32/uart.c
index abdaec6014..2c61c3158b 100644
--- a/libraries/SrcWrapper/src/stm32/uart.c
+++ b/libraries/SrcWrapper/src/stm32/uart.c
@@ -87,7 +87,7 @@ typedef enum {
 #if defined(UART9_BASE)
   UART9_INDEX,
 #endif
-#if defined(UART10_BASE)
+#if defined(UART10_BASE) || defined(USART10_BASE)
   UART10_INDEX,
 #endif
 #if defined(LPUART1_BASE)
@@ -284,6 +284,15 @@ void uart_init(serial_t *obj, uint32_t baudrate, uint32_t databits, uint32_t par
     obj->irq = UART10_IRQn;
   }
 #endif
+#if defined(USART10_BASE)
+  else if (obj->uart == USART10) {
+    __HAL_RCC_USART10_FORCE_RESET();
+    __HAL_RCC_USART10_RELEASE_RESET();
+    __HAL_RCC_USART10_CLK_ENABLE();
+    obj->index = UART10_INDEX;
+    obj->irq = USART10_IRQn;
+  }
+#endif
 
 #if defined(STM32F091xC) || defined (STM32F098xx)
   /* Enable SYSCFG Clock */
@@ -487,6 +496,13 @@ void uart_deinit(serial_t *obj)
       __HAL_RCC_UART10_RELEASE_RESET();
       __HAL_RCC_UART10_CLK_DISABLE();
       break;
+#endif
+#if defined(USART10_BASE)
+    case UART10_INDEX:
+      __HAL_RCC_USART10_FORCE_RESET();
+      __HAL_RCC_USART10_RELEASE_RESET();
+      __HAL_RCC_USART10_CLK_DISABLE();
+      break;
 #endif
   }
 
@@ -1062,6 +1078,19 @@ void UART10_IRQHandler(void)
 }
 #endif
 
+/**
+  * @brief  USART 10 IRQ handler
+  * @param  None
+  * @retval None
+  */
+#if defined(USART10_BASE)
+void USART10_IRQHandler(void)
+{
+  HAL_NVIC_ClearPendingIRQ(USART10_IRQn);
+  HAL_UART_IRQHandler(uart_handlers[UART10_INDEX]);
+}
+#endif
+
 /**
   * @brief  HAL UART Call Back
   * @param  UART handler