#include <Ultrasonic.h>
Ultrasonic ultrasonic(12, 8);
int LED_VERTE = 2;
int LED_JAUNE = 4;
int LED_ROUGE = 7;
void setup() {
  Serial.begin(9600);
  pinMode(LED_VERTE, OUTPUT);
  pinMode(LED_JAUNE, OUTPUT);
  pinMode(LED_ROUGE, OUTPUT);
}


void loop() {

  int distance = ultrasonic.read(CM);

  if(distance<100){
    digitalWrite(LED_ROUGE, HIGH);
    delay(100);
    digitalWrite(LED_ROUGE, LOW);
    delay(400);
  }else if(distance >= 100 && distance <=300){
    digitalWrite(LED_JAUNE, HIGH);
    delay(100);
    digitalWrite(LED_JAUNE, LOW);
    delay(800);
  }else if(distance>300){
    digitalWrite(LED_VERTE, HIGH);
    delay(100);
    digitalWrite(LED_VERTE, LOW);
    delay(1200);
  }
}