#include <OneButton.h>

const byte buttonPin = 7;
OneButton button(buttonPin, true);

enum Etat {LAMP_ETEINTE, LAMPE_ALLUMEE} ;

Etat etatCourant = LAMP_ETEINTE;

const int LED_PIN =  3;   // the number of the LED pin


void simpleclick(){

    switch(etatCourant){
    
    case LAMP_ETEINTE:
      digitalWrite(LED_PIN, HIGH);
      etatCourant = LAMPE_ALLUMEE;
      break;
    
    case LAMPE_ALLUMEE:
      digitalWrite(LED_PIN, LOW);
      etatCourant = LAMP_ETEINTE;
      break;
  }

}

void setup() {
 
  pinMode(LED_PIN, OUTPUT);

  pinMode(buttonPin, INPUT_PULLUP);

  button.attachClick(simpleclick);
}

void loop() {

  button.tick();
  
}