float detect_appui(unsigned long temps)
{
  static unsigned long t_appui = 0;
  if (digitalRead(8) == 0)
  {
    t_appui = temps;
  }
  return t_appui;
}


float conversion(float temps2)
{
  static float reponse = 0 ;
  reponse = temps2 / 1000;
  return reponse;

}


void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(3, OUTPUT);
  pinMode(8, INPUT_PULLUP);
}

void loop()
{
  unsigned long t_appui;
  float reponse;
  unsigned long t_ms = millis();
  t_appui = detect_appui(t_ms);
  /*Serial.println(t_appui);*/
  reponse = conversion(t_appui);
  Serial.print("le temps est");
  Serial.print (" ");
  Serial.println(reponse);

}