first commit

ATMEGA_INTERRUPT_BUTTON/ATMEGA_INTERRUPT_BUTTON.ino

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+const byte ledPin = 13;
+const byte interruptPin = 2;
+volatile byte state = LOW;
+
+void setup() {
+  Serial.begin(9600);
+  pinMode(ledPin, OUTPUT);
+  pinMode(interruptPin, INPUT_PULLUP);
+  attachInterrupt(digitalPinToInterrupt(interruptPin), onEvent, CHANGE);
+  Serial.println(F("Système intialisé"));
+}
+
+void loop() {
+  digitalWrite(ledPin, state);
+}
+
+void onEvent() {
+  state = !state;
+  Serial.print(F("Switch LED 13 : "));
+  if(state){
+    Serial.println(F("ON"));
+  }else{
+    Serial.println(F("OFF"));
+  }
+}