fix(matter): problems found after pressing reset

Author: SuGlider

Diff for: libraries/Matter/examples/MatterOnOffLight/MatterOnOffLight.ino

@@ -36,6 +36,9 @@ const char *ssid = "your-ssid";          // Change this to your WiFi SSID
 const char *password = "your-password";  // Change this to your WiFi password
 
 void setup() {
+  // Initializa the USER BUTTON (Boot button) GPIO that will act as a toggle switch
+  pinMode(buttonPin, INPUT_PULLUP);
+  
   Serial.begin(115200);
   while (!Serial) {
     delay(100);
@@ -89,8 +92,6 @@ void loop() {
         Serial.println("Matter Node not commissioned yet. Waiting for commissioning.");
       }
     }
-    // Initializa the USER BUTTON (Boot button) GPIO that will act as a toggle switch
-    pinMode(buttonPin, INPUT_PULLUP);
     // Initialize the LED (light) GPIO and Matter End Point
     pinMode(ledPin, OUTPUT);
     Serial.printf("Initial state: %s\r\n", OnOffLight.getOnOff() ? "ON" : "OFF");

Diff for: libraries/Matter/src/Matter.cpp

@@ -30,13 +30,12 @@ static esp_err_t app_attribute_update_cb(
 {
   esp_err_t err = ESP_OK;
   MatterEndPoint *ep = (MatterEndPoint *) priv_data;  // endpoint pointer to base class
-  if (ep == NULL) {
-    return err;
-  }
   switch(type) {
     case PRE_UPDATE: // Callback before updating the value in the database
       log_i("Attribute update callback: PRE_UPDATE");
-      err = ep->attributeChangeCB(endpoint_id, cluster_id, attribute_id, val) ? ESP_OK : ESP_FAIL;
+      if (ep != NULL) {
+        err = ep->attributeChangeCB(endpoint_id, cluster_id, attribute_id, val) ? ESP_OK : ESP_FAIL;
+      }
       break;
     case POST_UPDATE: // Callback after updating the value in the database
       log_i("Attribute update callback: POST_UPDATE");