From 34218c95237582b242258e5352c9c3707257efa3 Mon Sep 17 00:00:00 2001
From: Hannes Siebeneicher <hannes7eicher@gmail.com>
Date: Mon, 21 Aug 2023 16:02:03 +0200
Subject: [PATCH 1/3] Add comments

Comments have been added to the following sketches:
- SineWave.ino
- DisplaySingleFrame.ino
- GameOfLife.ino
- LivePreview.ino
- MatrixFrameBuffer.ino
- PlayAnimation.ino
---
 .../AnalogWave/examples/SineWave/SineWave.ino | 25 +++++++++---
 .../DisplaySingleFrame/DisplaySingleFrame.ino | 38 ++++++++++++++-----
 .../examples/GameOfLife/GameOfLife.ino        | 10 +++++
 .../examples/LivePreview/LivePreview.ino      | 19 +++++++---
 .../MatrixFrameBuffer/MatrixFrameBuffer.ino   | 37 +++++++++++++++++-
 .../examples/PlayAnimation/PlayAnimation.ino  |  9 ++++-
 6 files changed, 114 insertions(+), 24 deletions(-)

diff --git a/libraries/AnalogWave/examples/SineWave/SineWave.ino b/libraries/AnalogWave/examples/SineWave/SineWave.ino
index b64ada01e..5ec5eff6e 100644
--- a/libraries/AnalogWave/examples/SineWave/SineWave.ino
+++ b/libraries/AnalogWave/examples/SineWave/SineWave.ino
@@ -1,17 +1,30 @@
-#include "analogWave.h"
+/*
+  SineWave
 
-analogWave wave(DAC);
+  Generates a pre-generated sawtooth-waveform.
+
+  See the full documentatio here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/dac
+*/
+
+#include "analogWave.h" // Include the library for analog waveform generation
+
+analogWave wave(DAC);   // Create an instance of the analogWave class, using the DAC pin
 
 int freq = 10;  // in hertz, change accordingly
 
 void setup() {
-  Serial.begin(115200);
-  wave.sine(freq);
+  Serial.begin(115200);  // Initialize serial communication at a baud rate of 115200
+  wave.sine(freq);       // Generate a sine wave with the initial frequency
 }
 
 void loop() {
+  // Read an analog value from pin A5 and map it to a frequency range
   freq = map(analogRead(A5), 0, 1024, 0, 10000);
+
+  // Print the updated frequency to the serial monitor
   Serial.println("Frequency is now " + String(freq) + " hz");
-  wave.freq(freq);
-  delay(1000);
+
+  wave.freq(freq);  // Set the frequency of the waveform generator to the updated value
+  delay(1000);      // Delay for one second before repeating
 }
\ No newline at end of file
diff --git a/libraries/Arduino_LED_Matrix/examples/DisplaySingleFrame/DisplaySingleFrame.ino b/libraries/Arduino_LED_Matrix/examples/DisplaySingleFrame/DisplaySingleFrame.ino
index 22da1ee38..aed801431 100644
--- a/libraries/Arduino_LED_Matrix/examples/DisplaySingleFrame/DisplaySingleFrame.ino
+++ b/libraries/Arduino_LED_Matrix/examples/DisplaySingleFrame/DisplaySingleFrame.ino
@@ -1,21 +1,39 @@
-#include "Arduino_LED_Matrix.h"
-#include "frames.h"
+/*
+Single Frame
 
-ArduinoLEDMatrix matrix;
+Displays single frames using matrix.loadFrame
+
+See the full documentation here:
+https://docs.arduino.cc/tutorials/uno-r4-wifi/led-matrix
+*/
+
+#include "Arduino_LED_Matrix.h"   // Include the library for controlling LED matrix
+#include "frames.h"               // Include a header file containing frame data
+
+ArduinoLEDMatrix matrix;          // Create an instance of the ArduinoLEDMatrix class
 
 void setup() {
-  Serial.begin(115200);
-  matrix.begin();
-}
+  Serial.begin(115200);           // Initialize serial communication at a baud rate of 115200
+  matrix.begin();                 // Initialize the LED matrix
+}   
 
 void loop() {
+  // Load and display the "chip" frame on the LED matrix
   matrix.loadFrame(chip);
-  delay(500);
+  delay(500);  // Pause for 500 milliseconds (half a second)
+
+  // Load and display the "happy" frame on the LED matrix
   matrix.loadFrame(danger);
-  delay(500);
+  delay(500);  // Pause for 500 milliseconds (half a second)
+
+  // Load and display the "happy" frame on the LED matrix
   matrix.loadFrame(happy);
-  delay(500);
+  delay(500);  // Pause for 500 milliseconds (half a second)
+
+  // Load and display the "heart" frame on the LED matrix
   matrix.loadFrame(heart);
-  delay(500);
+  delay(500);  // Pause for 500 milliseconds (half a second)
+
+  // Print the current value of millis() to the serial monitor
   Serial.println(millis());
 }
diff --git a/libraries/Arduino_LED_Matrix/examples/GameOfLife/GameOfLife.ino b/libraries/Arduino_LED_Matrix/examples/GameOfLife/GameOfLife.ino
index c982abd25..5c939439d 100644
--- a/libraries/Arduino_LED_Matrix/examples/GameOfLife/GameOfLife.ino
+++ b/libraries/Arduino_LED_Matrix/examples/GameOfLife/GameOfLife.ino
@@ -1,6 +1,16 @@
 /*
+  Game Of Life
+
+  The Game of Life, also known simply as Life, is a cellular automaton devised 
+  by the British mathematician John Horton Conway in 1970. It is a zero-player game, 
+  meaning that its evolution is determined by its initial state, requiring no further 
+  input.
+
   Example developed starting from Toby Oxborrow's sketch
   https://github.com/tobyoxborrow/gameoflife-arduino/blob/master/GameOfLife.ino
+
+  See the full documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/led-matrix
 */
 
 #include "Arduino_LED_Matrix.h"
diff --git a/libraries/Arduino_LED_Matrix/examples/LivePreview/LivePreview.ino b/libraries/Arduino_LED_Matrix/examples/LivePreview/LivePreview.ino
index 7df7f234b..160de4dd2 100644
--- a/libraries/Arduino_LED_Matrix/examples/LivePreview/LivePreview.ino
+++ b/libraries/Arduino_LED_Matrix/examples/LivePreview/LivePreview.ino
@@ -5,27 +5,34 @@
   The LED Matrix editor is part of Arduino Labs (https://labs.arduino.cc/), and is therefore considered experimental software.
 
   Don't forget to close any serial monitor already opened.
+
+  See the full documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/led-matrix  
 */
 
-#include "Arduino_LED_Matrix.h"
+#include "Arduino_LED_Matrix.h" // Include the library for controlling LED matrix
 
-ArduinoLEDMatrix matrix;
+ArduinoLEDMatrix matrix;        // Create an instance of the ArduinoLEDMatrix class
 
 void setup() {
-  Serial.begin(115200);
-  matrix.begin();
+  Serial.begin(115200);         // Initialize serial communication at a baud rate of 115200
+  matrix.begin();               // Initialize the LED matrix
 }
 
+// Define an array to hold pixel data for a single frame (4 pixels)
 uint32_t frame[] = {
   0, 0, 0, 0xFFFF
 };
 
 void loop() {
+  // Check if there are at least 12 bytes available in the serial buffer
   if(Serial.available() >= 12){
+    // Read 4 bytes from the serial buffer and compose them into a 32-bit value for each element in the frame
     frame[0] = Serial.read() | Serial.read() << 8 | Serial.read() << 16 | Serial.read() << 24;
     frame[1] = Serial.read() | Serial.read() << 8 | Serial.read() << 16 | Serial.read() << 24;
     frame[2] = Serial.read() | Serial.read() << 8 | Serial.read() << 16 | Serial.read() << 24;
+    
+     // Load and display the received frame data on the LED matrix
     matrix.loadFrame(frame);
   }
-}
-
+}
\ No newline at end of file
diff --git a/libraries/Arduino_LED_Matrix/examples/MatrixFrameBuffer/MatrixFrameBuffer.ino b/libraries/Arduino_LED_Matrix/examples/MatrixFrameBuffer/MatrixFrameBuffer.ino
index 5e2a64861..c4633e998 100644
--- a/libraries/Arduino_LED_Matrix/examples/MatrixFrameBuffer/MatrixFrameBuffer.ino
+++ b/libraries/Arduino_LED_Matrix/examples/MatrixFrameBuffer/MatrixFrameBuffer.ino
@@ -1,6 +1,21 @@
+/*
+Matrix Frame Buffer
+
+This Arduino sketch demonstrates the creation and manipulation of 
+a frame buffer for the LED matrix. The frame buffer is used to control 
+the lighting of individual LEDs on the matrix, turning them randomly on and off.
+
+See the full documentation here:
+https://docs.arduino.cc/tutorials/uno-r4-wifi/led-matrix
+*/
+
+// Include the Arduino_LED_Matrix library 
 #include "Arduino_LED_Matrix.h"
+
+// Creating an instance of the ArduinoLEDMatrix class
 ArduinoLEDMatrix matrix;
 
+// Defining the frame array for the LED matrix with pixel values
 uint8_t frame[8][12] = {
   { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
   { 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0 },
@@ -12,6 +27,7 @@ uint8_t frame[8][12] = {
   { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }
 };
 
+// Setting up time intervals and dimensions for the matrix
 unsigned long lastTickTime, lastGameTickTime;
 #define UPDATE_INTERVAL 100
 #define GAME_UPDATE_INTERVAL 66
@@ -19,19 +35,28 @@ unsigned long lastTickTime, lastGameTickTime;
 #define ROWS 8
 #define COLUMNS 12
 
+// Variables to track the current positions
 uint8_t pointX = 0, pointY = 0;
 
 void setup() {
-  // put your setup code here, to run once:
+  // Initializing serial communication and delaying for setup
   Serial.begin(115200);
   delay(1500);
+
+  // Initializing the LED matrix
   matrix.begin();
+
+  // Initializing time tracking variables
   lastGameTickTime = lastTickTime = millis();
 }
 
 void loop() {
+  // Tracking the current time
   unsigned long msNow = millis();
+
+  // Updating the game logic with a fixed interval
   if (msNow - lastGameTickTime > GAME_UPDATE_INTERVAL) {
+    // Incrementing pointX and handling wraparound
     pointX++;
     if (pointX >= COLUMNS) {
       pointX = 0;
@@ -40,14 +65,24 @@ void loop() {
         pointY = 0;
       }
     }
+
+    // Generating random positions and pixel value
     pointX = random(COLUMNS);
     pointY = random(ROWS);
     uint8_t pixelValue = random(2);
+
+    // Updating the frame with the new pixel value
     frame[pointY][pointX] = pixelValue;
+
+    // Updating the last game tick time
     lastGameTickTime = msNow;
   }
+
+  // Rendering the LED matrix with the current frame at a fixed interval
   if (msNow - lastTickTime > UPDATE_INTERVAL) {
     matrix.renderBitmap(frame, 8, 12);
+
+    // Updating the last rendering tick time
     lastTickTime = msNow;
   }
 }
\ No newline at end of file
diff --git a/libraries/Arduino_LED_Matrix/examples/PlayAnimation/PlayAnimation.ino b/libraries/Arduino_LED_Matrix/examples/PlayAnimation/PlayAnimation.ino
index bb53f02fc..ccce73a1b 100644
--- a/libraries/Arduino_LED_Matrix/examples/PlayAnimation/PlayAnimation.ino
+++ b/libraries/Arduino_LED_Matrix/examples/PlayAnimation/PlayAnimation.ino
@@ -1,7 +1,14 @@
+/*
+Sketch shows animation defined in animation.h
+*/
+
+//Include library and animation.h
+
 #include "Arduino_LED_Matrix.h"
 #include "animation.h"
 
-ArduinoLEDMatrix matrix;
+// Create an instance of the ArduinoLEDMatrix class
+ArduinoLEDMatrix matrix;  
 
 void setup() {
   Serial.begin(115200);

From 88bf01ed3e55e6c1030094a452de50c0feb3e2c0 Mon Sep 17 00:00:00 2001
From: Hannes Siebeneicher <hannes7eicher@gmail.com>
Date: Tue, 22 Aug 2023 17:05:45 +0200
Subject: [PATCH 2/3] Apply Per's feedback and add more comments

---
 .../DACEqualTemperedScale.ino                 |  3 ++
 .../examples/DACJacques/DACJacques.ino        |  5 +-
 .../AnalogWave/examples/SineWave/SineWave.ino |  2 +-
 .../Arduino_CAN/examples/CANRead/CANRead.ino  |  9 ++++
 .../examples/CANWrite/CANWrite.ino            |  9 ++++
 .../FreeRTOS-Blink/FreeRTOS-Blink.ino         |  8 +++
 .../DisplaySingleFrame/DisplaySingleFrame.ino | 24 ++++-----
 .../examples/GameOfLife/GameOfLife.ino        |  2 +-
 .../examples/LivePreview/LivePreview.ino      |  4 +-
 .../MatrixFrameBuffer/MatrixFrameBuffer.ino   | 52 +++++++++----------
 .../examples/MatrixIntro/MatrixIntro.ino      |  3 ++
 .../examples/PlayAnimation/PlayAnimation.ino  | 13 +++--
 .../examples/eeprom_read/eeprom_read.ino      | 14 +++--
 .../examples/eeprom_write/eeprom_write.ino    | 14 +++--
 .../RTC/examples/RTC_Alarm/RTC_Alarm.ino      |  6 +++
 .../RTC_AutomaticExample.ino                  |  5 ++
 .../RTC/examples/RTC_NTPSync/RTC_NTPSync.ino  |  6 +++
 .../RTC_PeriodicExample.ino                   |  5 ++
 libraries/RTC/examples/Test_RTC/Test_RTC.ino  | 36 ++++++++++++-
 .../AP_SimpleWebServer/AP_SimpleWebServer.ino |  3 ++
 .../ConnectWithWPA/ConnectWithWPA.ino         | 19 ++++---
 .../examples/ScanNetworks/ScanNetworks.ino    | 27 +++++-----
 .../ScanNetworksAdvanced.ino                  |  3 ++
 .../SimpleWebServerWiFi.ino                   | 31 ++++++-----
 .../WiFiChatServer/WiFiChatServer.ino         | 36 +++++++------
 .../WiFiUdpNtpClient/WiFiUdpNtpClient.ino     | 26 +++++-----
 .../WiFiUdpSendReceiveString.ino              | 10 ++--
 .../examples/WiFiWebClient/WiFiWebClient.ino  | 23 ++++----
 .../WiFiWebClientRepeating.ino                |  4 +-
 .../WiFiWebClientSSL/WiFiWebClientSSL.ino     |  2 +
 .../examples/WiFiWebServer/WiFiWebServer.ino  |  3 ++
 31 files changed, 270 insertions(+), 137 deletions(-)

diff --git a/libraries/AnalogWave/examples/DACEqualTemperedScale/DACEqualTemperedScale.ino b/libraries/AnalogWave/examples/DACEqualTemperedScale/DACEqualTemperedScale.ino
index 7f3383f91..0686c5859 100644
--- a/libraries/AnalogWave/examples/DACEqualTemperedScale/DACEqualTemperedScale.ino
+++ b/libraries/AnalogWave/examples/DACEqualTemperedScale/DACEqualTemperedScale.ino
@@ -21,6 +21,9 @@
    created 18 Dec 2018
    modified 3 Jul 2023
    by Tom Igoe
+
+  See the full documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/dac
 */
 
 // include the AnalogWave library:
diff --git a/libraries/AnalogWave/examples/DACJacques/DACJacques.ino b/libraries/AnalogWave/examples/DACJacques/DACJacques.ino
index c533e6dc0..c636aa2cd 100644
--- a/libraries/AnalogWave/examples/DACJacques/DACJacques.ino
+++ b/libraries/AnalogWave/examples/DACJacques/DACJacques.ino
@@ -1,4 +1,4 @@
-  /*
+/*
   DAC Melody player
 
   Generates a series of tones from MIDI note values
@@ -14,6 +14,9 @@ circuit:
   created 13 Feb 2017
   modified 3 Jul 2023
   by Tom Igoe
+
+  See the full documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/dac
 */
 #include "analogWave.h"
 analogWave wave(DAC);
diff --git a/libraries/AnalogWave/examples/SineWave/SineWave.ino b/libraries/AnalogWave/examples/SineWave/SineWave.ino
index 5ec5eff6e..f29ccd993 100644
--- a/libraries/AnalogWave/examples/SineWave/SineWave.ino
+++ b/libraries/AnalogWave/examples/SineWave/SineWave.ino
@@ -3,7 +3,7 @@
 
   Generates a pre-generated sawtooth-waveform.
 
-  See the full documentatio here:
+  See the full documentation here:
   https://docs.arduino.cc/tutorials/uno-r4-wifi/dac
 */
 
diff --git a/libraries/Arduino_CAN/examples/CANRead/CANRead.ino b/libraries/Arduino_CAN/examples/CANRead/CANRead.ino
index 9b2e34a77..819ed6183 100644
--- a/libraries/Arduino_CAN/examples/CANRead/CANRead.ino
+++ b/libraries/Arduino_CAN/examples/CANRead/CANRead.ino
@@ -1,3 +1,12 @@
+/*
+  CANRead
+
+  Receive and read CAN Bus messages
+
+  See the full documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/can
+*/
+
 /**************************************************************************************
  * INCLUDE
  **************************************************************************************/
diff --git a/libraries/Arduino_CAN/examples/CANWrite/CANWrite.ino b/libraries/Arduino_CAN/examples/CANWrite/CANWrite.ino
index 2482e2c42..4114c249d 100644
--- a/libraries/Arduino_CAN/examples/CANWrite/CANWrite.ino
+++ b/libraries/Arduino_CAN/examples/CANWrite/CANWrite.ino
@@ -1,3 +1,12 @@
+/*
+  CANWrite
+
+  Write and send CAN Bus messages
+
+  See the full documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/can
+*/
+
 /**************************************************************************************
  * INCLUDE
  **************************************************************************************/
diff --git a/libraries/Arduino_FreeRTOS/examples/FreeRTOS-Blink/FreeRTOS-Blink.ino b/libraries/Arduino_FreeRTOS/examples/FreeRTOS-Blink/FreeRTOS-Blink.ino
index 8bba14cc8..039a67d7c 100644
--- a/libraries/Arduino_FreeRTOS/examples/FreeRTOS-Blink/FreeRTOS-Blink.ino
+++ b/libraries/Arduino_FreeRTOS/examples/FreeRTOS-Blink/FreeRTOS-Blink.ino
@@ -1,3 +1,11 @@
+/*
+  The code demonstrates the usage of FreeRTOS (Real-Time Operating System) to run concurrent tasks.
+
+  One task is responsible for running the loop() logic (in a thread-safe manner), 
+  while the other task blinks an LED using the built-in LED on non-Portenta boards or 
+  the RGB LED on the Portenta C33 board.
+*/
+
 /**************************************************************************************
  * INCLUDE
  **************************************************************************************/
diff --git a/libraries/Arduino_LED_Matrix/examples/DisplaySingleFrame/DisplaySingleFrame.ino b/libraries/Arduino_LED_Matrix/examples/DisplaySingleFrame/DisplaySingleFrame.ino
index aed801431..24a368143 100644
--- a/libraries/Arduino_LED_Matrix/examples/DisplaySingleFrame/DisplaySingleFrame.ino
+++ b/libraries/Arduino_LED_Matrix/examples/DisplaySingleFrame/DisplaySingleFrame.ino
@@ -1,13 +1,13 @@
 /*
-Single Frame
-
-Displays single frames using matrix.loadFrame
-
-See the full documentation here:
-https://docs.arduino.cc/tutorials/uno-r4-wifi/led-matrix
+  Single Frame
+  
+  Displays single frames using matrix.loadFrame
+  
+  See the full documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/led-matrix
 */
 
-#include "Arduino_LED_Matrix.h"   // Include the library for controlling LED matrix
+#include "Arduino_LED_Matrix.h"   // Include the LED_Matrix library
 #include "frames.h"               // Include a header file containing frame data
 
 ArduinoLEDMatrix matrix;          // Create an instance of the ArduinoLEDMatrix class
@@ -15,24 +15,24 @@ ArduinoLEDMatrix matrix;          // Create an instance of the ArduinoLEDMatrix
 void setup() {
   Serial.begin(115200);           // Initialize serial communication at a baud rate of 115200
   matrix.begin();                 // Initialize the LED matrix
-}   
+}
 
 void loop() {
   // Load and display the "chip" frame on the LED matrix
   matrix.loadFrame(chip);
   delay(500);  // Pause for 500 milliseconds (half a second)
 
-  // Load and display the "happy" frame on the LED matrix
+  // Load and display the "danger" frame on the LED matrix
   matrix.loadFrame(danger);
-  delay(500);  // Pause for 500 milliseconds (half a second)
+  delay(500);
 
   // Load and display the "happy" frame on the LED matrix
   matrix.loadFrame(happy);
-  delay(500);  // Pause for 500 milliseconds (half a second)
+  delay(500);
 
   // Load and display the "heart" frame on the LED matrix
   matrix.loadFrame(heart);
-  delay(500);  // Pause for 500 milliseconds (half a second)
+  delay(500);
 
   // Print the current value of millis() to the serial monitor
   Serial.println(millis());
diff --git a/libraries/Arduino_LED_Matrix/examples/GameOfLife/GameOfLife.ino b/libraries/Arduino_LED_Matrix/examples/GameOfLife/GameOfLife.ino
index 5c939439d..00f1e58bc 100644
--- a/libraries/Arduino_LED_Matrix/examples/GameOfLife/GameOfLife.ino
+++ b/libraries/Arduino_LED_Matrix/examples/GameOfLife/GameOfLife.ino
@@ -13,7 +13,7 @@
   https://docs.arduino.cc/tutorials/uno-r4-wifi/led-matrix
 */
 
-#include "Arduino_LED_Matrix.h"
+#include "Arduino_LED_Matrix.h" // Include the LED_Matrix library
 
 // grid dimensions. should not be larger than 8x8
 #define MAX_Y 8
diff --git a/libraries/Arduino_LED_Matrix/examples/LivePreview/LivePreview.ino b/libraries/Arduino_LED_Matrix/examples/LivePreview/LivePreview.ino
index 160de4dd2..3aeb3d697 100644
--- a/libraries/Arduino_LED_Matrix/examples/LivePreview/LivePreview.ino
+++ b/libraries/Arduino_LED_Matrix/examples/LivePreview/LivePreview.ino
@@ -10,7 +10,7 @@
   https://docs.arduino.cc/tutorials/uno-r4-wifi/led-matrix  
 */
 
-#include "Arduino_LED_Matrix.h" // Include the library for controlling LED matrix
+#include "Arduino_LED_Matrix.h" // Include the LED_Matrix library
 
 ArduinoLEDMatrix matrix;        // Create an instance of the ArduinoLEDMatrix class
 
@@ -35,4 +35,4 @@ void loop() {
      // Load and display the received frame data on the LED matrix
     matrix.loadFrame(frame);
   }
-}
\ No newline at end of file
+}
diff --git a/libraries/Arduino_LED_Matrix/examples/MatrixFrameBuffer/MatrixFrameBuffer.ino b/libraries/Arduino_LED_Matrix/examples/MatrixFrameBuffer/MatrixFrameBuffer.ino
index c4633e998..db86656f8 100644
--- a/libraries/Arduino_LED_Matrix/examples/MatrixFrameBuffer/MatrixFrameBuffer.ino
+++ b/libraries/Arduino_LED_Matrix/examples/MatrixFrameBuffer/MatrixFrameBuffer.ino
@@ -1,23 +1,23 @@
 /*
-Matrix Frame Buffer
-
-This Arduino sketch demonstrates the creation and manipulation of 
-a frame buffer for the LED matrix. The frame buffer is used to control 
-the lighting of individual LEDs on the matrix, turning them randomly on and off.
-
-See the full documentation here:
-https://docs.arduino.cc/tutorials/uno-r4-wifi/led-matrix
+  Matrix Frame Buffer
+  
+  This Arduino sketch demonstrates the creation and manipulation of 
+  a frame buffer for the LED matrix. The frame buffer is used to control 
+  the lighting of individual LEDs on the matrix, turning them randomly on and off.
+  
+  See the full documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/led-matrix
 */
 
-// Include the Arduino_LED_Matrix library 
-#include "Arduino_LED_Matrix.h"
+// Include the LED_Matrix library
+#include "Arduino_LED_Matrix.h"  
 
-// Creating an instance of the ArduinoLEDMatrix class
-ArduinoLEDMatrix matrix;
+// Create an instance of the ArduinoLEDMatrix class
+ArduinoLEDMatrix matrix;        
 
-// Defining the frame array for the LED matrix with pixel values
+// Define the frame array for the LED matrix with pixel values
 uint8_t frame[8][12] = {
-  { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
+  { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }, 
   { 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0 },
   { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
   { 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0 },
@@ -27,7 +27,7 @@ uint8_t frame[8][12] = {
   { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }
 };
 
-// Setting up time intervals and dimensions for the matrix
+// Set up time intervals and dimensions for the matrix
 unsigned long lastTickTime, lastGameTickTime;
 #define UPDATE_INTERVAL 100
 #define GAME_UPDATE_INTERVAL 66
@@ -39,24 +39,24 @@ unsigned long lastTickTime, lastGameTickTime;
 uint8_t pointX = 0, pointY = 0;
 
 void setup() {
-  // Initializing serial communication and delaying for setup
+  // Initialize serial communication and delaying for setup
   Serial.begin(115200);
   delay(1500);
 
-  // Initializing the LED matrix
+  // Initialize the LED matrix
   matrix.begin();
 
-  // Initializing time tracking variables
+  // Initialize time tracking variables
   lastGameTickTime = lastTickTime = millis();
 }
 
 void loop() {
-  // Tracking the current time
+  // Track the current time
   unsigned long msNow = millis();
 
-  // Updating the game logic with a fixed interval
+  // Update the game logic with a fixed interval
   if (msNow - lastGameTickTime > GAME_UPDATE_INTERVAL) {
-    // Incrementing pointX and handling wraparound
+    // Increment pointX and handling wraparound
     pointX++;
     if (pointX >= COLUMNS) {
       pointX = 0;
@@ -66,23 +66,23 @@ void loop() {
       }
     }
 
-    // Generating random positions and pixel value
+    // Generate random positions and pixel value
     pointX = random(COLUMNS);
     pointY = random(ROWS);
     uint8_t pixelValue = random(2);
 
-    // Updating the frame with the new pixel value
+    // Update the frame with the new pixel value
     frame[pointY][pointX] = pixelValue;
 
-    // Updating the last game tick time
+    // Update the last game tick time
     lastGameTickTime = msNow;
   }
 
-  // Rendering the LED matrix with the current frame at a fixed interval
+  // Render the LED matrix with the current frame at a fixed interval
   if (msNow - lastTickTime > UPDATE_INTERVAL) {
     matrix.renderBitmap(frame, 8, 12);
 
-    // Updating the last rendering tick time
+    // Update the last rendering tick time
     lastTickTime = msNow;
   }
 }
\ No newline at end of file
diff --git a/libraries/Arduino_LED_Matrix/examples/MatrixIntro/MatrixIntro.ino b/libraries/Arduino_LED_Matrix/examples/MatrixIntro/MatrixIntro.ino
index ea284dc35..d7e898fa8 100644
--- a/libraries/Arduino_LED_Matrix/examples/MatrixIntro/MatrixIntro.ino
+++ b/libraries/Arduino_LED_Matrix/examples/MatrixIntro/MatrixIntro.ino
@@ -11,6 +11,9 @@
 
   created 26 Jun 2023
   by Martino Facchin
+
+  See the full documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/led-matrix
 */
 
 
diff --git a/libraries/Arduino_LED_Matrix/examples/PlayAnimation/PlayAnimation.ino b/libraries/Arduino_LED_Matrix/examples/PlayAnimation/PlayAnimation.ino
index ccce73a1b..534d17077 100644
--- a/libraries/Arduino_LED_Matrix/examples/PlayAnimation/PlayAnimation.ino
+++ b/libraries/Arduino_LED_Matrix/examples/PlayAnimation/PlayAnimation.ino
@@ -1,11 +1,16 @@
 /*
-Sketch shows animation defined in animation.h
+  Play Animation
+
+  Sketch shows animation defined in animation.h
+
+  See the full documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/led-matrix
 */
 
-//Include library and animation.h
 
-#include "Arduino_LED_Matrix.h"
-#include "animation.h"
+
+#include "Arduino_LED_Matrix.h"   //Include the LED_Matrix library
+#include "animation.h"            //Include animation.h header file
 
 // Create an instance of the ArduinoLEDMatrix class
 ArduinoLEDMatrix matrix;  
diff --git a/libraries/EEPROM/examples/eeprom_read/eeprom_read.ino b/libraries/EEPROM/examples/eeprom_read/eeprom_read.ino
index d4650358d..1302edfdb 100644
--- a/libraries/EEPROM/examples/eeprom_read/eeprom_read.ino
+++ b/libraries/EEPROM/examples/eeprom_read/eeprom_read.ino
@@ -1,11 +1,15 @@
 /*
- * EEPROM Read
- *
- * Reads the value of each byte of the EEPROM and prints it
- * to the computer.
- * This example code is in the public domain.
+  EEPROM Read
+
+  Reads the value of each byte of the EEPROM and prints it
+  to the computer.
+  This example code is in the public domain.
+
+  See the full documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/eeprom
  */
 
+// Include the EEPROM library
 #include <EEPROM.h>
 
 // start reading from the first byte (address 0) of the EEPROM
diff --git a/libraries/EEPROM/examples/eeprom_write/eeprom_write.ino b/libraries/EEPROM/examples/eeprom_write/eeprom_write.ino
index 64e835cd6..d2cf09200 100644
--- a/libraries/EEPROM/examples/eeprom_write/eeprom_write.ino
+++ b/libraries/EEPROM/examples/eeprom_write/eeprom_write.ino
@@ -1,11 +1,15 @@
 /*
- * EEPROM Write
- *
- * Stores values read from analog input 0 into the EEPROM.
- * These values will stay in the EEPROM when the board is
- * turned off and may be retrieved later by another sketch.
+  EEPROM Write
+  
+  Stores values read from analog input 0 into the EEPROM.
+  These values will stay in the EEPROM when the board is
+  turned off and may be retrieved later by another sketch.
+ 
+  See the full documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/eeprom
  */
 
+// Include the EEPROM library
 #include <EEPROM.h>
 
 /** the current address in the EEPROM (i.e. which byte we're going to write to next) **/
diff --git a/libraries/RTC/examples/RTC_Alarm/RTC_Alarm.ino b/libraries/RTC/examples/RTC_Alarm/RTC_Alarm.ino
index 03ebc05df..db47ea100 100644
--- a/libraries/RTC/examples/RTC_Alarm/RTC_Alarm.ino
+++ b/libraries/RTC/examples/RTC_Alarm/RTC_Alarm.ino
@@ -1,4 +1,6 @@
 /*
+ * RTC_Alarm
+ *
  * This example demonstrates how to use the alarm functionality of the RTC
  * (Real Time Clock) on the Portenta C33 and UNO R4 Minima / WiFi.
  *
@@ -9,12 +11,16 @@
  *
  * Note that the Portenta C33's LED is inverted and will be lit when
  * the state is 0 (LOW).
+ * 
+ * Find the full UNO R4 WiFi RTC documentation here:
+ * https://docs.arduino.cc/tutorials/uno-r4-wifi/rtc
  */
 
 unsigned long previousMillis = 0;
 const long interval = 1000;
 bool ledState = false;
 
+// Include the RTC library
 #include "RTC.h"
 
 void setup() {
diff --git a/libraries/RTC/examples/RTC_AutomaticExample/RTC_AutomaticExample.ino b/libraries/RTC/examples/RTC_AutomaticExample/RTC_AutomaticExample.ino
index 0b87b0b5e..cca5063d6 100644
--- a/libraries/RTC/examples/RTC_AutomaticExample/RTC_AutomaticExample.ino
+++ b/libraries/RTC/examples/RTC_AutomaticExample/RTC_AutomaticExample.ino
@@ -1,4 +1,6 @@
 /*
+ * RTC_AutomaticExample
+ *
  * This example sets the RTC (Real Time Clock) on the Portenta C33 automatically by
  * retrieving the date and time from the computer you upload the sketch from, at the
  * point when you start the upload.
@@ -8,8 +10,11 @@
  * The alarm, which now goes off once a minute, triggers a callback that prints the
  * current time to the Serial Monitor.
  *
+ * Find the full UNO R4 WiFi RTC documentation here:
+ * https://docs.arduino.cc/tutorials/uno-r4-wifi/rtc
  */
 
+// Include the RTC library
 #include "RTC.h"
 
 DayOfWeek convertDayOfWeek(String s)
diff --git a/libraries/RTC/examples/RTC_NTPSync/RTC_NTPSync.ino b/libraries/RTC/examples/RTC_NTPSync/RTC_NTPSync.ino
index 3b7e4d77b..6b200a563 100644
--- a/libraries/RTC/examples/RTC_NTPSync/RTC_NTPSync.ino
+++ b/libraries/RTC/examples/RTC_NTPSync/RTC_NTPSync.ino
@@ -10,9 +10,15 @@
  * 4. Open the Serial Monitor.
  * 
  * Initial author: Sebastian Romero @sebromero
+ * 
+ * Find the full UNO R4 WiFi RTC documentation here:
+ * https://docs.arduino.cc/tutorials/uno-r4-wifi/rtc
  */
 
+// Include the RTC library
 #include "RTC.h"
+
+//Include the NTP library
 #include <NTPClient.h>
 
 #if defined(ARDUINO_PORTENTA_C33)
diff --git a/libraries/RTC/examples/RTC_PeriodicExample/RTC_PeriodicExample.ino b/libraries/RTC/examples/RTC_PeriodicExample/RTC_PeriodicExample.ino
index 4f467f7d1..fa1820acc 100644
--- a/libraries/RTC/examples/RTC_PeriodicExample/RTC_PeriodicExample.ino
+++ b/libraries/RTC/examples/RTC_PeriodicExample/RTC_PeriodicExample.ino
@@ -1,11 +1,16 @@
 /*
+ * RTC_PeriodicExample
+ *
  * This example demonstrates how to use the periodic callback functionality of the RTC
  * (Real Time Clock) on the Portenta C33.
  *
  * It blinks the built-in LED at progressively faster and slower rates repeatedly.
  *
+ * Find the full UNO R4 WiFi RTC documentation here:
+ * https://docs.arduino.cc/tutorials/uno-r4-wifi/rtc
  */
 
+// Include the RTC library
 #include "RTC.h"
 
 #define BLINK_DELAY 2000
diff --git a/libraries/RTC/examples/Test_RTC/Test_RTC.ino b/libraries/RTC/examples/Test_RTC/Test_RTC.ino
index 6eb87aff5..67dd08cf2 100644
--- a/libraries/RTC/examples/Test_RTC/Test_RTC.ino
+++ b/libraries/RTC/examples/Test_RTC/Test_RTC.ino
@@ -1,17 +1,34 @@
+/*
+  Test RTC
+  
+  A test sketch showcasing all RTC showcasing various functionalities related to the RTC module, 
+  including setting the time, handling interrupts, and reading time values.
+
+  Find the full UNO R4 WiFi RTC documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/rtc
+*/
+
+// Include the RTC library
 #include "RTC.h"
 
+// Define the interrupt pin for LED control during interrupts
 const int LED_ON_INTERRUPT  = 22;
 
+// Callback function for periodic interrupt
 void periodic_cbk() {
   static bool clb_st = false;
+
+  // Toggle the LED based on callback state
   if(clb_st) {
     digitalWrite(LED_ON_INTERRUPT,HIGH);
   }
   else {
     digitalWrite(LED_ON_INTERRUPT,LOW);
   }
-  clb_st = !clb_st;
+
+  clb_st = !clb_st;  // Toggle callback state
  
+  // Print message indicating periodic interrupt
   Serial.println("PERIODIC INTERRUPT");
 }
 
@@ -19,32 +36,44 @@ void alarm_cbk() {
   Serial.println("ALARM INTERRUPT");
 }
 
+// Callback function for alarm interrupt
 void setup() {
+  // Initialize serial communication
   Serial.begin(9600);
+  // Wait for serial connection
   while(!Serial) {
     
   }
   
+  // Set LED pins as outputs
   pinMode(LED_BUILTIN, OUTPUT);
   pinMode(LED_ON_INTERRUPT, OUTPUT);
   
+  // Initialize the RTC
   RTC.begin();
+
+  // Set a specific initial time (August 25, 2022, 14:37:00 Thursday)
   RTCTime mytime(25, Month::AUGUST, 2022, 14, 37, 00, DayOfWeek::THURSDAY, SaveLight::SAVING_TIME_ACTIVE);
 
+  // Set the initial time if RTC is not running
   if(!RTC.isRunning()) {
     RTC.setTime(mytime);
   }
 
+  // Create an alarm time set to 35 seconds
   RTCTime alarmtime;
   alarmtime.setSecond(35);
 
+  // Create an AlarmMatch object to match seconds
   AlarmMatch am;
   am.addMatchSecond();
 
+  // Set the periodic callback function to run once every 2 seconds
   if(!RTC.setPeriodicCallback(periodic_cbk, Period::ONCE_EVERY_2_SEC)) {
     Serial.println("ERROR: periodic callback not set");
   }
   
+  // Set the alarm callback function with the alarm time and matching condition
   if(!RTC.setAlarmCallback(alarm_cbk, alarmtime, am)) {
     Serial.println("ERROR: alarm callback not set");
   }
@@ -55,8 +84,11 @@ void loop() {
   static bool status = false;
   
   RTCTime currenttime;
+  
+  // Check if RTC is running and print status
   if(status) {
-    
+
+    // Toggle LED and display RTC status if 'status' is true
     if(RTC.isRunning()) {
       Serial.println("RTC is running");
     }
diff --git a/libraries/WiFiS3/examples/AP_SimpleWebServer/AP_SimpleWebServer.ino b/libraries/WiFiS3/examples/AP_SimpleWebServer/AP_SimpleWebServer.ino
index bc2e69083..cedf85c61 100644
--- a/libraries/WiFiS3/examples/AP_SimpleWebServer/AP_SimpleWebServer.ino
+++ b/libraries/WiFiS3/examples/AP_SimpleWebServer/AP_SimpleWebServer.ino
@@ -14,6 +14,9 @@
   created 25 Nov 2012
   by Tom Igoe
   adapted to WiFi AP by Adafruit
+
+  Find the full UNO R4 WiFi RTC documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/wifi-examples#access-point
  */
 
 #include "WiFiS3.h"
diff --git a/libraries/WiFiS3/examples/ConnectWithWPA/ConnectWithWPA.ino b/libraries/WiFiS3/examples/ConnectWithWPA/ConnectWithWPA.ino
index ccf1199b8..4f3d07271 100644
--- a/libraries/WiFiS3/examples/ConnectWithWPA/ConnectWithWPA.ino
+++ b/libraries/WiFiS3/examples/ConnectWithWPA/ConnectWithWPA.ino
@@ -1,12 +1,15 @@
 /*
- This example connects to an unencrypted WiFi network.
- Then it prints the MAC address of the WiFi module,
- the IP address obtained, and other network details.
-
- created 13 July 2010
- by dlf (Metodo2 srl)
- modified 31 May 2012
- by Tom Igoe
+  This example connects to an unencrypted WiFi network.
+  Then it prints the MAC address of the WiFi module,
+  the IP address obtained, and other network details.
+
+  created 13 July 2010
+  by dlf (Metodo2 srl)
+  modified 31 May 2012
+  by Tom Igoe
+
+  Find the full UNO R4 WiFi RTC documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/wifi-examples#connect-with-wpa
  */
 #include <WiFiS3.h>
 
diff --git a/libraries/WiFiS3/examples/ScanNetworks/ScanNetworks.ino b/libraries/WiFiS3/examples/ScanNetworks/ScanNetworks.ino
index 0f5e40ad1..a275f71d8 100644
--- a/libraries/WiFiS3/examples/ScanNetworks/ScanNetworks.ino
+++ b/libraries/WiFiS3/examples/ScanNetworks/ScanNetworks.ino
@@ -1,16 +1,19 @@
 /*
- This example  prints the board's MAC address, and
- scans for available WiFi networks using the NINA module.
- Every ten seconds, it scans again. It doesn't actually
- connect to any network, so no encryption scheme is specified.
-
- Circuit:
- * Board with NINA module (Arduino MKR WiFi 1010, MKR VIDOR 4000 and Uno WiFi Rev.2)
-
- created 13 July 2010
- by dlf (Metodo2 srl)
- modified 21 Junn 2012
- by Tom Igoe and Jaymes Dec
+  This example  prints the board's MAC address, and
+  scans for available WiFi networks using the NINA module.
+  Every ten seconds, it scans again. It doesn't actually
+  connect to any network, so no encryption scheme is specified.
+
+  Circuit:
+   * Board with NINA module (Arduino MKR WiFi 1010, MKR VIDOR 4000 and Uno WiFi Rev.2)
+
+  created 13 July 2010
+  by dlf (Metodo2 srl)
+  modified 21 Junn 2012
+  by Tom Igoe and Jaymes Dec
+
+  Find the full UNO R4 WiFi RTC documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/wifi-examples#scan-networks
  */
 
 
diff --git a/libraries/WiFiS3/examples/ScanNetworksAdvanced/ScanNetworksAdvanced.ino b/libraries/WiFiS3/examples/ScanNetworksAdvanced/ScanNetworksAdvanced.ino
index d18d65e92..63619cc03 100644
--- a/libraries/WiFiS3/examples/ScanNetworksAdvanced/ScanNetworksAdvanced.ino
+++ b/libraries/WiFiS3/examples/ScanNetworksAdvanced/ScanNetworksAdvanced.ino
@@ -12,6 +12,9 @@
 
   created 1 Mar 2017
   by Arturo Guadalupi
+
+  Find the full UNO R4 WiFi RTC documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/wifi-examples#scan-networks-advanced
 */
 
 
diff --git a/libraries/WiFiS3/examples/SimpleWebServerWiFi/SimpleWebServerWiFi.ino b/libraries/WiFiS3/examples/SimpleWebServerWiFi/SimpleWebServerWiFi.ino
index 786bbdaf3..9746cea93 100644
--- a/libraries/WiFiS3/examples/SimpleWebServerWiFi/SimpleWebServerWiFi.ino
+++ b/libraries/WiFiS3/examples/SimpleWebServerWiFi/SimpleWebServerWiFi.ino
@@ -1,24 +1,27 @@
 /*
   WiFi Web Server LED Blink
 
- A simple web server that lets you blink an LED via the web.
- This sketch will print the IP address of your WiFi module (once connected)
- to the Serial Monitor. From there, you can open that address in a web browser
- to turn on and off the LED_BUILTIN.
+  A simple web server that lets you blink an LED via the web.
+  This sketch will print the IP address of your WiFi module (once connected)
+  to the Serial Monitor. From there, you can open that address in a web browser
+  to turn on and off the LED_BUILTIN.
 
- If the IP address of your board is yourAddress:
- http://yourAddress/H turns the LED on
- http://yourAddress/L turns it off
+  If the IP address of your board is yourAddress:
+  http://yourAddress/H turns the LED on
+  http://yourAddress/L turns it off
 
- This example is written for a network using WPA encryption. For
- WEP or WPA, change the WiFi.begin() call accordingly.
+  This example is written for a network using WPA encryption. For
+  WEP or WPA, change the WiFi.begin() call accordingly.
 
- Circuit:
- * Board with NINA module (Arduino MKR WiFi 1010, MKR VIDOR 4000 and Uno WiFi Rev.2)
- * LED attached to pin 9
+  Circuit:
+  * Board with NINA module (Arduino MKR WiFi 1010, MKR VIDOR 4000 and Uno WiFi Rev.2)
+  * LED attached to pin 9
 
- created 25 Nov 2012
- by Tom Igoe
+  created 25 Nov 2012
+  by Tom Igoe
+
+  Find the full UNO R4 WiFi RTC documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/wifi-examples#simple-webserver
  */
 
 #include "WiFiS3.h"
diff --git a/libraries/WiFiS3/examples/WiFiChatServer/WiFiChatServer.ino b/libraries/WiFiS3/examples/WiFiChatServer/WiFiChatServer.ino
index 9da123c65..e7fa456c1 100644
--- a/libraries/WiFiS3/examples/WiFiChatServer/WiFiChatServer.ino
+++ b/libraries/WiFiS3/examples/WiFiChatServer/WiFiChatServer.ino
@@ -1,22 +1,24 @@
 /*
- Chat  Server
-
- A simple server that distributes any incoming messages to all
- connected clients. To use, telnet to your device's IP address and type.
- You can see the client's input in the serial monitor as well.
-
- This example is written for a network using WPA encryption. For
- WEP or WPA, change the WiFi.begin() call accordingly.
-
-
- Circuit:
- * Board with NINA module (Arduino MKR WiFi 1010, MKR VIDOR 4000 and Uno WiFi Rev.2)
-
- created 18 Dec 2009
- by David A. Mellis
- modified 31 May 2012
- by Tom Igoe
+  Chat  Server
+  
+  A simple server that distributes any incoming messages to all
+  connected clients. To use, telnet to your device's IP address and type.
+  You can see the client's input in the serial monitor as well.
+  
+  This example is written for a network using WPA encryption. For
+  WEP or WPA, change the WiFi.begin() call accordingly.
+  
+  
+  Circuit:
+  * Board with NINA module (Arduino MKR WiFi 1010, MKR VIDOR 4000 and Uno WiFi Rev.2)
+  
+  created 18 Dec 2009
+  by David A. Mellis
+  modified 31 May 2012
+  by Tom Igoe
 
+  Find the full UNO R4 WiFi RTC documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/wifi-examples#wi-fi-chat-server
  */
 
 
diff --git a/libraries/WiFiS3/examples/WiFiUdpNtpClient/WiFiUdpNtpClient.ino b/libraries/WiFiS3/examples/WiFiUdpNtpClient/WiFiUdpNtpClient.ino
index 585c54ad7..3f58e89ff 100644
--- a/libraries/WiFiS3/examples/WiFiUdpNtpClient/WiFiUdpNtpClient.ino
+++ b/libraries/WiFiS3/examples/WiFiUdpNtpClient/WiFiUdpNtpClient.ino
@@ -1,20 +1,22 @@
 /*
- Udp NTP Client
+  Udp NTP Client
 
- Get the time from a Network Time Protocol (NTP) time server
- Demonstrates use of UDP sendPacket and ReceivePacket
- For more on NTP time servers and the messages needed to communicate with them,
- see http://en.wikipedia.org/wiki/Network_Time_Protocol
+  Get the time from a Network Time Protocol (NTP) time server
+  Demonstrates use of UDP sendPacket and ReceivePacket
+  For more on NTP time servers and the messages needed to communicate with them,
+  see http://en.wikipedia.org/wiki/Network_Time_Protocol
 
- created 4 Sep 2010
- by Michael Margolis
- modified 9 Apr 2012
- by Tom Igoe
- modified May, 4th 2023
- by Daniele Aimo
+  created 4 Sep 2010
+  by Michael Margolis
+  modified 9 Apr 2012
+  by Tom Igoe
+  modified May, 4th 2023
+  by Daniele Aimo
 
- This code is in the public domain.
+  This code is in the public domain.
 
+  Find the full UNO R4 WiFi RTC documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/wifi-examples#wi-fi-udp-ntp-client
  */
 
 
diff --git a/libraries/WiFiS3/examples/WiFiUdpSendReceiveString/WiFiUdpSendReceiveString.ino b/libraries/WiFiS3/examples/WiFiUdpSendReceiveString/WiFiUdpSendReceiveString.ino
index 0ced9ab2e..709aae49b 100644
--- a/libraries/WiFiS3/examples/WiFiUdpSendReceiveString/WiFiUdpSendReceiveString.ino
+++ b/libraries/WiFiS3/examples/WiFiUdpSendReceiveString/WiFiUdpSendReceiveString.ino
@@ -1,12 +1,14 @@
 /*
   WiFi UDP Send and Receive String
 
- This sketch waits for a UDP packet on localPort using the WiFi module.
- When a packet is received an Acknowledge packet is sent to the client on port remotePort
+  This sketch waits for a UDP packet on localPort using the WiFi module.
+  When a packet is received an Acknowledge packet is sent to the client on port remotePort
 
- created 30 December 2012
- by dlf (Metodo2 srl)
+  created 30 December 2012
+  by dlf (Metodo2 srl)
 
+  Find the full UNO R4 WiFi RTC documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/wifi-examples#wi-fi-udp-send-receive-string
  */
 
 
diff --git a/libraries/WiFiS3/examples/WiFiWebClient/WiFiWebClient.ino b/libraries/WiFiS3/examples/WiFiWebClient/WiFiWebClient.ino
index 9b6169b33..c7de4a997 100644
--- a/libraries/WiFiS3/examples/WiFiWebClient/WiFiWebClient.ino
+++ b/libraries/WiFiS3/examples/WiFiWebClient/WiFiWebClient.ino
@@ -1,20 +1,23 @@
 /*
   Web client
 
- This sketch connects to a website (http://www.google.com)
- using the WiFi module.
+  This sketch connects to a website (http://www.google.com)
+  using the WiFi module.
 
- This example is written for a network using WPA encryption. For
- WEP or WPA, change the WiFi.begin() call accordingly.
+  This example is written for a network using WPA encryption. For
+  WEP or WPA, change the WiFi.begin() call accordingly.
 
- This example is written for a network using WPA encryption. For
- WEP or WPA, change the WiFi.begin() call accordingly.
+  This example is written for a network using WPA encryption. For
+  WEP or WPA, change the WiFi.begin() call accordingly.
 
 
- created 13 July 2010
- by dlf (Metodo2 srl)
- modified 31 May 2012
- by Tom Igoe
+  created 13 July 2010
+  by dlf (Metodo2 srl)
+  modified 31 May 2012
+  by Tom Igoe
+
+  Find the full UNO R4 WiFi RTC documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/wifi-examples#wi-fi-web-client
  */
 
 
diff --git a/libraries/WiFiS3/examples/WiFiWebClientRepeating/WiFiWebClientRepeating.ino b/libraries/WiFiS3/examples/WiFiWebClientRepeating/WiFiWebClientRepeating.ino
index 09ee4c28c..7df9def6a 100644
--- a/libraries/WiFiS3/examples/WiFiWebClientRepeating/WiFiWebClientRepeating.ino
+++ b/libraries/WiFiS3/examples/WiFiWebClientRepeating/WiFiWebClientRepeating.ino
@@ -10,8 +10,10 @@
  modified 13 Jan 2014
  by Federico Vanzati
 
- http://www.arduino.cc/en/Tutorial/WifiWebClientRepeating
  This code is in the public domain.
+
+  Find the full UNO R4 WiFi RTC documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/wifi-examples#wi-fi-web-client-repeating
  */
 
 #include "WiFiS3.h"
diff --git a/libraries/WiFiS3/examples/WiFiWebClientSSL/WiFiWebClientSSL.ino b/libraries/WiFiS3/examples/WiFiWebClientSSL/WiFiWebClientSSL.ino
index 742666a32..1df9bccb8 100644
--- a/libraries/WiFiS3/examples/WiFiWebClientSSL/WiFiWebClientSSL.ino
+++ b/libraries/WiFiS3/examples/WiFiWebClientSSL/WiFiWebClientSSL.ino
@@ -4,6 +4,8 @@
   Remeber to update the CA certificates using CertificateUploader sketch
   before using this sketch.
 
+  Find the full UNO R4 WiFi RTC documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/wifi-examples#wi-fi-web-client-ssl
 */
 
 #include "WiFiS3.h"
diff --git a/libraries/WiFiS3/examples/WiFiWebServer/WiFiWebServer.ino b/libraries/WiFiS3/examples/WiFiWebServer/WiFiWebServer.ino
index 8ecf4130a..b34aefc2d 100644
--- a/libraries/WiFiS3/examples/WiFiWebServer/WiFiWebServer.ino
+++ b/libraries/WiFiS3/examples/WiFiWebServer/WiFiWebServer.ino
@@ -14,6 +14,9 @@
  modified 31 May 2012
  by Tom Igoe
 
+
+  Find the full UNO R4 WiFi RTC documentation here:
+  https://docs.arduino.cc/tutorials/uno-r4-wifi/wifi-examples#wi-fi-web-server
  */
 
 #include "WiFiS3.h"

From 16515ba9d7f23fa3425c05d344cd9a50bbf7fc49 Mon Sep 17 00:00:00 2001
From: Hannes Siebeneicher <hannes7eicher@gmail.com>
Date: Tue, 22 Aug 2023 17:06:55 +0200
Subject: [PATCH 3/3] Add RTC_NTPSync name to comment

---
 libraries/RTC/examples/RTC_NTPSync/RTC_NTPSync.ino | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libraries/RTC/examples/RTC_NTPSync/RTC_NTPSync.ino b/libraries/RTC/examples/RTC_NTPSync/RTC_NTPSync.ino
index 6b200a563..3a7117f27 100644
--- a/libraries/RTC/examples/RTC_NTPSync/RTC_NTPSync.ino
+++ b/libraries/RTC/examples/RTC_NTPSync/RTC_NTPSync.ino
@@ -1,4 +1,6 @@
 /**
+ * RTC_NTPSync
+ * 
  * This example shows how to set the RTC (Real Time Clock) on the Portenta C33 / UNO R4 WiFi
  * to the current date and time retrieved from an NTP server on the Internet (pool.ntp.org).
  * Then the current time from the RTC is printed to the Serial port.