---

const int buttonPin = 2;
const int ledPin = 13;

void setup() {
  Serial.begin(9600);
  pinMode(buttonPin, INPUT);
  pinMode(ledPin, OUTPUT);
}

void loop() {
  int buttonState = digitalRead(buttonPin);

  Serial.println(buttonState);

  if (buttonState == LOW) {
    digitalWrite(ledPin, LOW);
    delay(50);
    return;
  }

  digitalWrite(ledPin, HIGH);
  delay(500);
  digitalWrite(ledPin, LOW);
  delay(500);
}