//Hier wird die Library eingebunden 
#include <Bounce2.h> 

//Hier wird ein Objekt vom Typ Button erstellt
Bounce2::Button button = Bounce2::Button(); 

#define PIN 7 
#define PIN_MODE INPUT_PULLUP
#define INTERNAL_IN_MS 10 

int s = LOW; 
int b; 

void setup() {
  // put your setup code here, to run once:

  button.attach(PIN;PIN_MODE);
  button.interval(INTERVAL_IN_MS); 
  button.setPressedState(LOW);  

}

void loop() {
  // put your main code here, to run repeatedly:

  button.update(); 

  if(button.pressed())
  {
    if(s == HIGH)
    {
      s = LOW; 
    }
    else 
    {
      s = HIGH; 
    }
    digitalWrite(LED_BUILTIN,s);
  }

}