const byte interruptPin = 2;
const byte lt = 200;
volatile byte state = 0;
volatile byte trame[lt];
volatile unsigned long ttime[lt];
volatile byte i = 0;
volatile unsigned long startt;
const unsigned long tlimite = 150000;
volatile unsigned long t;
void setup() {
  pinMode(interruptPin, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(interruptPin), front, CHANGE);
  Serial.begin(115200);
  reset();
}
void loop() {
}
void front() {
  t = micros();
  if (i == 0) {
    startt = t;
  }
  if (t-startt > tlimite) {
    afficher();
  }
  else {
    trame[i] = state;
    ttime[i] = t-startt;
    i++;
    state = 1-state;
    trame[i] = state;
    ttime[i] = ttime[i-1];
    i++;
    
    if (i >= lt) {
      afficher();
    }
  }
}
void afficher() {
  for (int j = 0; j<lt ; j++){
    if (trame[j] < 2) {
      Serial.print(ttime[j]);
      Serial.print("\t");
      Serial.println(trame[j]);
    }
  }
  reset();
}
void reset() {
  for (int j = 0; j<lt ; j++){
    trame[j] = 255;
    ttime[i] = 0;
  }
  state = 0;
  i = 0;
}