#define ledPin 2
#define buttonPin 4

void setup() {
   Serial.begin(115200); 
  pinMode(ledPin,OUTPUT);
  pinMode(buttonPin, INPUT);
}

void loop() {
  bool buttonPressed = digitalRead(buttonPin);
  Serial.println(buttonPressed);

  if(buttonPressed){
    digitalWrite(ledPin, LOW);
  }
  else {digitalWrite(ledPin, HIGH);
  }
  delay(100);
}