long debouncing_time = 200; //Debouncing Time in Milliseconds
volatile unsigned long last_micros;
volatile bool state = true;

void setup() {
  pinMode(2, INPUT_PULLUP);
  pinMode(13, OUTPUT);
  attachInterrupt(digitalPinToInterrupt(2), debounceInterrupt, RISING);
  Serial.begin(9600);
}

void loop() {
  digitalWrite(13,state);
}

void debounceInterrupt() {
  if((long)(micros() - last_micros) >= debouncing_time * 1000) {
    blink();
    last_micros = micros();
  }
}

void blink() {
  state = !state;
  Serial.print(state);
}




// volatile bool state = true;
// void setup() {
//   // put your setup code here, to run once:
//   pinMode(2, INPUT_PULLUP);
//   pinMode(13, OUTPUT);
//   Serial.begin(9600);
//   attachInterrupt(digitalPinToInterrupt(2), blink, RISING);
// }

// void loop() {
//   // put your main code here, to run repeatedly:
//   digitalWrite(13,state);
// }

// void blink(){
//   state = !state;
//   Serial.println(state);
// }










// bool state = true;
// void setup() {
//   // put your setup code here, to run once:
//   pinMode(2, INPUT_PULLUP);
//   pinMode(13, OUTPUT);
//   Serial.begin(9600);
// }

// void loop() {
//   // put your main code here, to run repeatedly:
//   if (digitalRead(2) == LOW){
//     delay(500);
//     state = !state;
//     Serial.println(state);
//   } 
//   digitalWrite(13,state);
// }












// void setup() {
//   // put your setup code here, to run once:
//   pinMode(2, INPUT_PULLUP);
//   pinMode(13, OUTPUT);
// }

// void loop() {
//   // put your main code here, to run repeatedly:
//   if (digitalRead(2) == LOW){
//     digitalWrite(13, HIGH);
//   } else{
//     digitalWrite(13, LOW);
//   }
// }