const int didPin  = 2;
//Variables
bool didStatus  = false;
bool oldDidStatus  = false;
unsigned long lastDebounceTime  = 0;
unsigned long debounceDelay  = 50;
void setup() {
 //Init Serial USB
 Serial.begin(9600);
 Serial.println(F("initialisation"));
 //Init digital input
 pinMode(didPin, INPUT_PULLUP);
}
void loop() {
 debounceDid();
}
void debounceDid( ) { /* function debounceDid */
 ////debounce DigitalDebounce
 int reading = digitalRead(didPin);
 if (reading != oldDidStatus) {
   lastDebounceTime = millis();
 }
 if ((millis() - lastDebounceTime)>= debounceDelay) {
   if (reading != didStatus) {
     didStatus = reading;
     Serial.print(F("Etat du Bouton : ")); Serial.println(didStatus);
   }
 }
 oldDidStatus = reading;
}