int capTRIG=12;
int capECHO=13;
int buzzer=6;
int destance;



void setup() {
  pinMode(capTRIG, OUTPUT);
  pinMode(capECHO, INPUT);
  pinMode(buzzer, OUTPUT);

}


int mesurerDistance() {
  digitalWrite(capTRIG, LOW);
  delayMicroseconds(2);
  digitalWrite(capTRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(capTRIG, LOW);
  

  int duree= pulseIn(capECHO, HIGH);
  
  
  int distanceCM= duree * 0.0343 / 2;
  
  return distanceCM;
}

void loop() {
  destance= mesurerDistance();





if (destance < 100) {

    tone(6,1800,50);

  } else if (destance <300) {
    
    tone(6,1800,100);
    delay(500);
    
  } else {

   tone(6,1800,200);
   delay(1000);
  }
}