feat(matter_examples): apply boot button change to all examples (#10702)

* feat(matter_examples): apply boot button change to all examples

libraries/Matter/examples/MatterColorLight/MatterColorLight.ino

@@ -35,7 +35,13 @@ const uint8_t ledPin = 2;  // Set your pin here if your board has not defined LE
 #endif
 
 // set your board USER BUTTON pin here
-const uint8_t buttonPin = 0;  // Set your pin here. Using BOOT Button. C6/C3 use GPIO9.
+const uint8_t buttonPin = BOOT_PIN;  // Set your pin here. Using BOOT Button.
+
+// Button control
+uint32_t button_time_stamp = 0;                // debouncing control
+bool button_state = false;                     // false = released | true = pressed
+const uint32_t debouceTime = 250;              // button debouncing time (ms)
+const uint32_t decommissioningTimeout = 5000;  // keep the button pressed for 5s, or longer, to decommission
 
 // WiFi is manually set and started
 const char *ssid = "your-ssid";          // Change this to your WiFi SSID
@@ -125,11 +131,6 @@ void setup() {
     ColorLight.updateAccessory();
   }
 }
-// Button control
-uint32_t button_time_stamp = 0;                 // debouncing control
-bool button_state = false;                      // false = released | true = pressed
-const uint32_t debouceTime = 250;               // button debouncing time (ms)
-const uint32_t decommissioningTimeout = 10000;  // keep the button pressed for 10s to decommission the light
 
 void loop() {
   // Check Matter Light Commissioning state, which may change during execution of loop()
@@ -167,17 +168,18 @@ void loop() {
 
   // Onboard User Button is used as a Light toggle switch or to decommission it
   uint32_t time_diff = millis() - button_time_stamp;
-  if (button_state && time_diff > debouceTime && digitalRead(buttonPin) == HIGH) {
-    button_state = false;  // released
+  if (digitalRead(buttonPin) == HIGH && button_state && time_diff > debouceTime) {
     // Toggle button is released - toggle the light
     Serial.println("User button released. Toggling Light!");
     ColorLight.toggle();   // Matter Controller also can see the change
+    button_state = false;  // released
+  }
 
-    // Factory reset is triggered if the button is pressed longer than 10 seconds
-    if (time_diff > decommissioningTimeout) {
+  // Onboard User Button is kept pressed for longer than 5 seconds in order to decommission matter node
+  if (button_state && time_diff > decommissioningTimeout) {
     Serial.println("Decommissioning the Light Matter Accessory. It shall be commissioned again.");
     ColorLight = false;  // turn the light off
     Matter.decommission();
-    }
+    button_time_stamp = millis();  // avoid running decommissining again, reboot takes a second or so
   }
 }

libraries/Matter/examples/MatterComposedLights/MatterComposedLights.ino

@@ -18,31 +18,42 @@
 
 // List of Matter Endpoints for this Node
 // There will be 3 On/Off Light Endpoints in the same Node
-MatterOnOffLight OnOffLight1;
-MatterOnOffLight OnOffLight2;
-MatterOnOffLight OnOffLight3;
+MatterOnOffLight Light1;
+MatterDimmableLight Light2;
+MatterColorLight Light3;
 
 // WiFi is manually set and started
 const char *ssid = "your-ssid";          // Change this to your WiFi SSID
 const char *password = "your-password";  // Change this to your WiFi password
 
+// set your board USER BUTTON pin here -  USED to decommission the Matter Node
+const uint8_t buttonPin = BOOT_PIN;  // Set your pin here. Using BOOT Button.
+
+// Button control
+uint32_t button_time_stamp = 0;                // debouncing control
+bool button_state = false;                     // false = released | true = pressed
+const uint32_t decommissioningTimeout = 5000;  // keep the button pressed for 5s, or longer, to decommission
+
 // Matter Protocol Endpoint Callback for each Light Accessory
 bool setLightOnOff1(bool state) {
-  Serial.printf("CB-Light1 changed state to: %s\r\n", state ? "ON" : "OFF");
+  Serial.printf("Light1 changed state to: %s\r\n", state ? "ON" : "OFF");
   return true;
 }
 
 bool setLightOnOff2(bool state) {
-  Serial.printf("CB-Light2 changed state to: %s\r\n", state ? "ON" : "OFF");
+  Serial.printf("Light2 changed state to: %s\r\n", state ? "ON" : "OFF");
   return true;
 }
 
 bool setLightOnOff3(bool state) {
-  Serial.printf("CB-Light3 changed state to: %s\r\n", state ? "ON" : "OFF");
+  Serial.printf("Light3 changed state to: %s\r\n", state ? "ON" : "OFF");
   return true;
 }
 
 void setup() {
+  // Initialize the USER BUTTON (Boot button) that will be used to decommission the Matter Node
+  pinMode(buttonPin, INPUT_PULLUP);
+
   Serial.begin(115200);
   while (!Serial) {
     delay(100);
@@ -60,24 +71,27 @@ void setup() {
     delay(500);
     Serial.print(".");
   }
-  Serial.println("\r\nWiFi connected");
+  Serial.println();
+  Serial.println("WiFi connected");
   Serial.println("IP address: ");
   Serial.println(WiFi.localIP());
   delay(500);
 
   // Initialize all 3 Matter EndPoints
-  OnOffLight1.begin();
-  OnOffLight2.begin();
-  OnOffLight3.begin();
-  OnOffLight1.onChange(setLightOnOff1);
-  OnOffLight2.onChange(setLightOnOff2);
-  OnOffLight3.onChange(setLightOnOff3);
+  Light1.begin();
+  Light2.begin();
+  Light3.begin();
+  Light1.onChangeOnOff(setLightOnOff1);
+  Light2.onChangeOnOff(setLightOnOff2);
+  Light3.onChangeOnOff(setLightOnOff3);
 
   // Matter beginning - Last step, after all EndPoints are initialized
   Matter.begin();
 }
 
 void loop() {
+  static uint32_t timeCounter = 0;
+
   // Check Matter Light Commissioning state
   if (!Matter.isDeviceCommissioned()) {
     Serial.println("");
@@ -97,10 +111,32 @@ void loop() {
     Serial.println("Matter Node is commissioned and connected to Wi-Fi. Ready for use.");
   }
 
-  //displays the Light state every 3 seconds
+  //displays the Light state every 5 seconds
+  if (!(timeCounter++ % 10)) {  // delaying for 500ms x 10 = 5s
     Serial.println("======================");
-  Serial.printf("Matter Light #1 is %s\r\n", OnOffLight1.getOnOff() ? "ON" : "OFF");
-  Serial.printf("Matter Light #2 is %s\r\n", OnOffLight2.getOnOff() ? "ON" : "OFF");
-  Serial.printf("Matter Light #3 is %s\r\n", OnOffLight3.getOnOff() ? "ON" : "OFF");
-  delay(3000);
+    Serial.printf("Matter Light #1 is %s\r\n", Light1.getOnOff() ? "ON" : "OFF");
+    Serial.printf("Matter Light #2 is %s\r\n", Light2.getOnOff() ? "ON" : "OFF");
+    Serial.printf("Matter Light #3 is %s\r\n", Light3.getOnOff() ? "ON" : "OFF");
+  }
+
+  // Check if the button has been pressed
+  if (digitalRead(buttonPin) == LOW && !button_state) {
+    // deals with button debouncing
+    button_time_stamp = millis();  // record the time while the button is pressed.
+    button_state = true;           // pressed.
+  }
+
+  if (digitalRead(buttonPin) == HIGH && button_state) {
+    button_state = false;  // released
+  }
+
+  // Onboard User Button is kept pressed for longer than 5 seconds in order to decommission matter node
+  uint32_t time_diff = millis() - button_time_stamp;
+  if (button_state && time_diff > decommissioningTimeout) {
+    Serial.println("Decommissioning the Light Matter Accessory. It shall be commissioned again.");
+    Matter.decommission();
+    button_time_stamp = millis();  // avoid running decommissining again, reboot takes a second or so
+  }
+
+  delay(500);
 }

libraries/Matter/examples/MatterDimmableLight/MatterDimmableLight.ino

@@ -35,7 +35,13 @@ const uint8_t ledPin = 2;  // Set your pin here if your board has not defined LE
 #endif
 
 // set your board USER BUTTON pin here
-const uint8_t buttonPin = 0;  // Set your pin here. Using BOOT Button. C6/C3 use GPIO9.
+const uint8_t buttonPin = BOOT_PIN;  // Set your pin here. Using BOOT Button.
+
+// Button control
+uint32_t button_time_stamp = 0;                // debouncing control
+bool button_state = false;                     // false = released | true = pressed
+const uint32_t debouceTime = 250;              // button debouncing time (ms)
+const uint32_t decommissioningTimeout = 5000;  // keep the button pressed for 5s, or longer, to decommission
 
 // WiFi is manually set and started
 const char *ssid = "your-ssid";          // Change this to your WiFi SSID
@@ -117,11 +123,6 @@ void setup() {
     DimmableLight.updateAccessory();
   }
 }
-// Button control
-uint32_t button_time_stamp = 0;                 // debouncing control
-bool button_state = false;                      // false = released | true = pressed
-const uint32_t debouceTime = 250;               // button debouncing time (ms)
-const uint32_t decommissioningTimeout = 10000;  // keep the button pressed for 10s to decommission the light
 
 void loop() {
   // Check Matter Light Commissioning state, which may change during execution of loop()
@@ -156,17 +157,18 @@ void loop() {
 
   // Onboard User Button is used as a Light toggle switch or to decommission it
   uint32_t time_diff = millis() - button_time_stamp;
-  if (button_state && time_diff > debouceTime && digitalRead(buttonPin) == HIGH) {
-    button_state = false;  // released
+  if (digitalRead(buttonPin) == HIGH && button_state && time_diff > debouceTime) {
     // Toggle button is released - toggle the light
     Serial.println("User button released. Toggling Light!");
     DimmableLight.toggle();  // Matter Controller also can see the change
+    button_state = false;    // released
+  }
 
-    // Factory reset is triggered if the button is pressed longer than 10 seconds
-    if (time_diff > decommissioningTimeout) {
+  // Onboard User Button is kept pressed for longer than 5 seconds in order to decommission matter node
+  if (button_state && time_diff > decommissioningTimeout) {
     Serial.println("Decommissioning the Light Matter Accessory. It shall be commissioned again.");
     DimmableLight = false;  // turn the light off
     Matter.decommission();
-    }
+    button_time_stamp = millis();  // avoid running decommissining again, reboot takes a second or so
   }
 }

libraries/Matter/examples/MatterEnhancedColorLight/MatterEnhancedColorLight.ino

@@ -38,7 +38,13 @@ const uint8_t ledPin = 2;  // Set your pin here if your board has not defined LE
 #endif
 
 // set your board USER BUTTON pin here
-const uint8_t buttonPin = 0;  // Set your pin here. Using BOOT Button. C6/C3 use GPIO9.
+const uint8_t buttonPin = BOOT_PIN;  // Set your pin here. Using BOOT Button.
+
+// Button control
+uint32_t button_time_stamp = 0;                // debouncing control
+bool button_state = false;                     // false = released | true = pressed
+const uint32_t debouceTime = 250;              // button debouncing time (ms)
+const uint32_t decommissioningTimeout = 5000;  // keep the button pressed for 5s, or longer, to decommission
 
 // WiFi is manually set and started
 const char *ssid = "your-ssid";          // Change this to your WiFi SSID
@@ -147,11 +153,6 @@ void setup() {
     EnhancedColorLight.updateAccessory();
   }
 }
-// Button control
-uint32_t button_time_stamp = 0;                 // debouncing control
-bool button_state = false;                      // false = released | true = pressed
-const uint32_t debouceTime = 250;               // button debouncing time (ms)
-const uint32_t decommissioningTimeout = 10000;  // keep the button pressed for 10s to decommission the light
 
 void loop() {
   // Check Matter Light Commissioning state, which may change during execution of loop()
@@ -194,12 +195,13 @@ void loop() {
     // Toggle button is released - toggle the light
     Serial.println("User button released. Toggling Light!");
     EnhancedColorLight.toggle();  // Matter Controller also can see the change
+  }
 
-    // Factory reset is triggered if the button is pressed longer than 10 seconds
-    if (time_diff > decommissioningTimeout) {
+  // Onboard User Button is kept pressed for longer than 5 seconds in order to decommission matter node
+  if (button_state && time_diff > decommissioningTimeout) {
     Serial.println("Decommissioning the Light Matter Accessory. It shall be commissioned again.");
     EnhancedColorLight = false;  // turn the light off
     Matter.decommission();
-    }
+    button_time_stamp = millis();  // avoid running decommissining again, reboot takes a second or so
   }
 }

libraries/Matter/examples/MatterFan/MatterFan.ino

@@ -20,8 +20,14 @@
 // Fan Endpoint - On/Off control + Speed Percent Control + Fan Modes
 MatterFan Fan;
 
-// set your board USER BUTTON pin here - used for toggling On/Off
-const uint8_t buttonPin = 0;  // Set your pin here. Using BOOT Button. C6/C3 use GPIO9.
+// set your board USER BUTTON pin here - used for toggling On/Off and decommission the Matter Node
+const uint8_t buttonPin = BOOT_PIN;  // Set your pin here. Using BOOT Button.
+
+// Button control
+uint32_t button_time_stamp = 0;                // debouncing control
+bool button_state = false;                     // false = released | true = pressed
+const uint32_t debouceTime = 250;              // button debouncing time (ms)
+const uint32_t decommissioningTimeout = 5000;  // keep the button pressed for 5s, or longer, to decommission
 
 // set your board Analog Pin here - used for changing the Fan speed
 const uint8_t analogPin = A0;  // Analog Pin depends on each board
@@ -56,7 +62,7 @@ void fanDCMotorDrive(bool fanState, uint8_t speedPercent) {
 }
 
 void setup() {
-  // Initialize the USER BUTTON (Boot button) GPIO that will toggle the Fan (On/Off)
+  // Initialize the USER BUTTON (Boot button) GPIO that will toggle the Fan (On/Off) and decommission the Matter Node
   pinMode(buttonPin, INPUT_PULLUP);
   // Initialize the Analog Pin A0 used to read input voltage and to set the Fan speed accordingly
   pinMode(analogPin, INPUT);
@@ -140,12 +146,6 @@ void setup() {
   }
 }
 
-// Builtin Button control
-uint32_t button_time_stamp = 0;                 // debouncing control
-bool button_state = false;                      // false = released | true = pressed
-const uint32_t debouceTime = 250;               // button debouncing time (ms)
-const uint32_t decommissioningTimeout = 10000;  // keep the button pressed for 10s to decommission the Matter Fabric
-
 void loop() {
   // Check Matter Accessory Commissioning state, which may change during execution of loop()
   if (!Matter.isDeviceCommissioned()) {
@@ -181,12 +181,13 @@ void loop() {
     // button is released - toggle Fan On/Off
     Fan.toggle();
     Serial.printf("User button released. Setting the Fan %s.\r\n", Fan > 0 ? "ON" : "OFF");
+  }
 
-    // Factory reset is triggered if the button is pressed longer than 10 seconds
-    if (time_diff > decommissioningTimeout) {
+  // Onboard User Button is kept pressed for longer than 5 seconds in order to decommission matter node
+  if (button_state && time_diff > decommissioningTimeout) {
     Serial.println("Decommissioning the Generic Switch Matter Accessory. It shall be commissioned again.");
     Matter.decommission();
-    }
+    button_time_stamp = millis();  // avoid running decommissining again, reboot takes a second or so
   }
 
   // checks Analog pin and adjust the speed only if it has changed

libraries/Matter/examples/MatterMinimum/MatterMinimum.ino

@@ -35,6 +35,14 @@ const uint8_t ledPin = LED_BUILTIN;
 const uint8_t ledPin = 2;  // Set your pin here if your board has not defined LED_BUILTIN
 #endif
 
+// set your board USER BUTTON pin here - decommissioning button
+const uint8_t buttonPin = BOOT_PIN;  // Set your pin here. Using BOOT Button.
+
+// Button control - decommision the Matter Node
+uint32_t button_time_stamp = 0;                // debouncing control
+bool button_state = false;                     // false = released | true = pressed
+const uint32_t decommissioningTimeout = 5000;  // keep the button pressed for 5s, or longer, to decommission
+
 // Matter Protocol Endpoint (On/OFF Light) Callback
 bool matterCB(bool state) {
   digitalWrite(ledPin, state ? HIGH : LOW);
@@ -47,6 +55,8 @@ const char *ssid = "your-ssid";          // Change this to your WiFi SSID
 const char *password = "your-password";  // Change this to your WiFi password
 
 void setup() {
+  // Initialize the USER BUTTON (Boot button) that will be used to decommission the Matter Node
+  pinMode(buttonPin, INPUT_PULLUP);
   // Initialize the LED GPIO
   pinMode(ledPin, OUTPUT);
 
@@ -77,5 +87,24 @@ void setup() {
 }
 
 void loop() {
+  // Check if the button has been pressed
+  if (digitalRead(buttonPin) == LOW && !button_state) {
+    // deals with button debouncing
+    button_time_stamp = millis();  // record the time while the button is pressed.
+    button_state = true;           // pressed.
+  }
+
+  if (digitalRead(buttonPin) == HIGH && button_state) {
+    button_state = false;  // released
+  }
+
+  // Onboard User Button is kept pressed for longer than 5 seconds in order to decommission matter node
+  uint32_t time_diff = millis() - button_time_stamp;
+  if (button_state && time_diff > decommissioningTimeout) {
+    Serial.println("Decommissioning the Light Matter Accessory. It shall be commissioned again.");
+    Matter.decommission();
+    button_time_stamp = millis();  // avoid running decommissining again, reboot takes a second or so
+  }
+
   delay(500);
 }

libraries/Matter/examples/MatterOnOffLight/MatterOnOffLight.ino

@@ -34,7 +34,13 @@ const uint8_t ledPin = 2;  // Set your pin here if your board has not defined LE
 #endif
 
 // set your board USER BUTTON pin here
-const uint8_t buttonPin = 0;  // Set your pin here. Using BOOT Button. C6/C3 use GPIO9.
+const uint8_t buttonPin = BOOT_PIN;  // Set your pin here. Using BOOT Button.
+
+// Button control
+uint32_t button_time_stamp = 0;                // debouncing control
+bool button_state = false;                     // false = released | true = pressed
+const uint32_t debouceTime = 250;              // button debouncing time (ms)
+const uint32_t decommissioningTimeout = 5000;  // keep the button pressed for 5s, or longer, to decommission
 
 // WiFi is manually set and started
 const char *ssid = "your-ssid";          // Change this to your WiFi SSID
@@ -97,11 +103,6 @@ void setup() {
     OnOffLight.updateAccessory();  // configure the Light based on initial state
   }
 }
-// Button control
-uint32_t button_time_stamp = 0;                 // debouncing control
-bool button_state = false;                      // false = released | true = pressed
-const uint32_t debouceTime = 250;               // button debouncing time (ms)
-const uint32_t decommissioningTimeout = 10000;  // keep the button pressed for 10s to decommission the light
 
 void loop() {
   // Check Matter Light Commissioning state, which may change during execution of loop()
@@ -140,12 +141,13 @@ void loop() {
     // Toggle button is released - toggle the light
     Serial.println("User button released. Toggling Light!");
     OnOffLight.toggle();  // Matter Controller also can see the change
+  }
 
-    // Factory reset is triggered if the button is pressed longer than 10 seconds
-    if (time_diff > decommissioningTimeout) {
+  // Onboard User Button is kept pressed for longer than 5 seconds in order to decommission matter node
+  if (button_state && time_diff > decommissioningTimeout) {
     Serial.println("Decommissioning the Light Matter Accessory. It shall be commissioned again.");
     OnOffLight.setOnOff(false);  // turn the light off
     Matter.decommission();
-    }
+    button_time_stamp = millis();  // avoid running decommissining again, reboot takes a second or so
   }
 }

libraries/Matter/examples/MatterSmartButon/MatterSmartButon.ino

@@ -21,14 +21,20 @@
 MatterGenericSwitch SmartButton;
 
 // set your board USER BUTTON pin here
-const uint8_t buttonPin = 0;  // Set your pin here. Using BOOT Button. C6/C3 use GPIO9.
+const uint8_t buttonPin = BOOT_PIN;  // Set your pin here. Using BOOT Button.
+
+// Button control
+uint32_t button_time_stamp = 0;                // debouncing control
+bool button_state = false;                     // false = released | true = pressed
+const uint32_t debouceTime = 250;              // button debouncing time (ms)
+const uint32_t decommissioningTimeout = 5000;  // keep the button pressed for 5s, or longer, to decommission
 
 // WiFi is manually set and started
 const char *ssid = "your-ssid";          // Change this to your WiFi SSID
 const char *password = "your-password";  // Change this to your WiFi password
 
 void setup() {
-  // Initialize the USER BUTTON (Boot button) GPIO that will act as a toggle switch
+  // Initialize the USER BUTTON (Boot button) GPIO that will act as a smart button or to decommission the Matter Node
   pinMode(buttonPin, INPUT_PULLUP);
 
   Serial.begin(115200);
@@ -63,11 +69,6 @@ void setup() {
     Serial.println("Matter Node is commissioned and connected to Wi-Fi. Ready for use.");
   }
 }
-// Button control
-uint32_t button_time_stamp = 0;                 // debouncing control
-bool button_state = false;                      // false = released | true = pressed
-const uint32_t debouceTime = 250;               // button debouncing time (ms)
-const uint32_t decommissioningTimeout = 10000;  // keep the button pressed for 10s to decommission the Matter Fabric
 
 void loop() {
   // Check Matter Accessory Commissioning state, which may change during execution of loop()
@@ -105,11 +106,12 @@ void loop() {
     Serial.println("User button released. Sending Click to the Matter Controller!");
     // Matter Controller will receive an event and, if programmed, it will trigger an action
     SmartButton.click();
+  }
 
-    // Factory reset is triggered if the button is pressed longer than 10 seconds
-    if (time_diff > decommissioningTimeout) {
+  // Onboard User Button is kept pressed for longer than 5 seconds in order to decommission matter node
+  if (button_state && time_diff > decommissioningTimeout) {
     Serial.println("Decommissioning the Generic Switch Matter Accessory. It shall be commissioned again.");
     Matter.decommission();
-    }
+    button_time_stamp = millis();  // avoid running decommissining again, reboot takes a second or so
   }
 }

libraries/Matter/examples/MatterTemperatureLight/MatterTemperatureLight.ino

@@ -36,7 +36,13 @@ const uint8_t ledPin = 2;  // Set your pin here if your board has not defined LE
 #endif
 
 // set your board USER BUTTON pin here
-const uint8_t buttonPin = 0;  // Set your pin here. Using BOOT Button. C6/C3 use GPIO9.
+const uint8_t buttonPin = BOOT_PIN;  // Set your pin here. Using BOOT Button.
+
+// Button control
+uint32_t button_time_stamp = 0;                // debouncing control
+bool button_state = false;                     // false = released | true = pressed
+const uint32_t debouceTime = 250;              // button debouncing time (ms)
+const uint32_t decommissioningTimeout = 5000;  // keep the button pressed for 5s, or longer, to decommission
 
 // WiFi is manually set and started
 const char *ssid = "your-ssid";          // Change this to your WiFi SSID
@@ -137,11 +143,6 @@ void setup() {
     CW_WW_Light.updateAccessory();
   }
 }
-// Button control
-uint32_t button_time_stamp = 0;                 // debouncing control
-bool button_state = false;                      // false = released | true = pressed
-const uint32_t debouceTime = 250;               // button debouncing time (ms)
-const uint32_t decommissioningTimeout = 10000;  // keep the button pressed for 10s to decommission the light
 
 void loop() {
   // Check Matter Light Commissioning state, which may change during execution of loop()
@@ -184,12 +185,13 @@ void loop() {
     // Toggle button is released - toggle the light
     Serial.println("User button released. Toggling Light!");
     CW_WW_Light.toggle();  // Matter Controller also can see the change
+  }
 
-    // Factory reset is triggered if the button is pressed longer than 10 seconds
-    if (time_diff > decommissioningTimeout) {
+  // Onboard User Button is kept pressed for longer than 5 seconds in order to decommission matter node
+  if (button_state && time_diff > decommissioningTimeout) {
     Serial.println("Decommissioning the Light Matter Accessory. It shall be commissioned again.");
     CW_WW_Light = false;  // turn the light off
     Matter.decommission();
-    }
+    button_time_stamp = millis();  // avoid running decommissining again, reboot takes a second or so
   }
 }

libraries/Matter/examples/MatterTemperatureSensor/MatterTemperatureSensor.ino

@@ -27,6 +27,14 @@
 // Matter Temperature Sensor Endpoint
 MatterTemperatureSensor SimulatedTemperatureSensor;
 
+// set your board USER BUTTON pin here - decommissioning button
+const uint8_t buttonPin = BOOT_PIN;  // Set your pin here. Using BOOT Button.
+
+// Button control - decommision the Matter Node
+uint32_t button_time_stamp = 0;                // debouncing control
+bool button_state = false;                     // false = released | true = pressed
+const uint32_t decommissioningTimeout = 5000;  // keep the button pressed for 5s, or longer, to decommission
+
 // WiFi is manually set and started
 const char *ssid = "your-ssid";          // Change this to your WiFi SSID
 const char *password = "your-password";  // Change this to your WiFi password
@@ -47,6 +55,9 @@ float getSimulatedTemperature() {
 }
 
 void setup() {
+  // Initialize the USER BUTTON (Boot button) that will be used to decommission the Matter Node
+  pinMode(buttonPin, INPUT_PULLUP);
+
   Serial.begin(115200);
 
   // Manually connect to WiFi
@@ -86,9 +97,35 @@ void setup() {
 }
 
 void loop() {
+  static uint32_t timeCounter = 0;
+
+  // Print the current temperature value every 5s
+  if (!(timeCounter++ % 10)) {  // delaying for 500ms x 10 = 5s
+    // Print the current temperature value
     Serial.printf("Current Temperature is %.02f <Temperature Units>\r\n", SimulatedTemperatureSensor.getTemperature());
-  // update the temperature sensor value every 5 seconds
-  // Matter APP shall display the updated temperature
-  delay(5000);
+    // Update Temperature from the (Simulated) Hardware Sensor
+    // Matter APP shall display the updated temperature percent
     SimulatedTemperatureSensor.setTemperature(getSimulatedTemperature());
+  }
+
+  // Check if the button has been pressed
+  if (digitalRead(buttonPin) == LOW && !button_state) {
+    // deals with button debouncing
+    button_time_stamp = millis();  // record the time while the button is pressed.
+    button_state = true;           // pressed.
+  }
+
+  if (digitalRead(buttonPin) == HIGH && button_state) {
+    button_state = false;  // released
+  }
+
+  // Onboard User Button is kept pressed for longer than 5 seconds in order to decommission matter node
+  uint32_t time_diff = millis() - button_time_stamp;
+  if (button_state && time_diff > decommissioningTimeout) {
+    Serial.println("Decommissioning the Light Matter Accessory. It shall be commissioned again.");
+    Matter.decommission();
+    button_time_stamp = millis();  // avoid running decommissining again, reboot takes a second or so
+  }
+
+  delay(500);
 }

libraries/Matter/examples/WiFiProvWithinMatter/WiFiProvWithinMatter.ino

@@ -41,6 +41,14 @@ const uint8_t ledPin = LED_BUILTIN;
 const uint8_t ledPin = 2;  // Set your pin here if your board has not defined LED_BUILTIN
 #endif
 
+// set your board USER BUTTON pin here - decommissioning button
+const uint8_t buttonPin = BOOT_PIN;  // Set your pin here. Using BOOT Button.
+
+// Button control - decommision the Matter Node
+uint32_t button_time_stamp = 0;                // debouncing control
+bool button_state = false;                     // false = released | true = pressed
+const uint32_t decommissioningTimeout = 5000;  // keep the button pressed for 5s, or longer, to decommission
+
 // Matter Protocol Endpoint (On/OFF Light) Callback
 bool matterCB(bool state) {
   digitalWrite(ledPin, state ? HIGH : LOW);
@@ -49,6 +57,9 @@ bool matterCB(bool state) {
 }
 
 void setup() {
+  // Initialize the USER BUTTON (Boot button) that will be used to decommission the Matter Node
+  pinMode(buttonPin, INPUT_PULLUP);
+
   Serial.begin(115200);
   // Initialize the LED GPIO
   pinMode(ledPin, OUTPUT);
@@ -118,5 +129,24 @@ void setup() {
 }
 
 void loop() {
+  // Check if the button has been pressed
+  if (digitalRead(buttonPin) == LOW && !button_state) {
+    // deals with button debouncing
+    button_time_stamp = millis();  // record the time while the button is pressed.
+    button_state = true;           // pressed.
+  }
+
+  if (digitalRead(buttonPin) == HIGH && button_state) {
+    button_state = false;  // released
+  }
+
+  // Onboard User Button is kept pressed for longer than 5 seconds in order to decommission matter node
+  uint32_t time_diff = millis() - button_time_stamp;
+  if (button_state && time_diff > decommissioningTimeout) {
+    Serial.println("Decommissioning the Light Matter Accessory. It shall be commissioned again.");
+    Matter.decommission();
+    button_time_stamp = millis();  // avoid running decommissining again, reboot takes a second or so
+  }
+
   delay(500);
 }