// Include the required Wire library for I2C

#include <Wire.h>

int x = 10;
int ledPin1 = 9;
int ledPin2 = 10;
int ledPin3 = 11;

void setup() {

  pinMode (LED_BUILTIN, OUTPUT);
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  Serial.begin(9600);

  Wire.begin(9);
  Wire.onReceive(receiveEvent);
}
void receiveEvent(int bytes) {
  x = Wire.read();
  Serial.println("recieved");
}
void loop() {
  Serial.println(x);

  if (x == 0) {
    digitalWrite(ledPin3, HIGH);
    digitalWrite(LED_BUILTIN, HIGH);
    delay(200);
    digitalWrite(ledPin3, LOW);
    digitalWrite(LED_BUILTIN, LOW);
//    delay(400);
  }

  if (x == 2) {
    digitalWrite(ledPin2, HIGH);
    digitalWrite(LED_BUILTIN, HIGH);
    delay(200);
    digitalWrite(ledPin2, LOW);
    digitalWrite(LED_BUILTIN, LOW);
//    delay(400);
  }
  if (x == 4) {
    digitalWrite(ledPin1, HIGH);
    digitalWrite(LED_BUILTIN, HIGH);
    delay(200);
    digitalWrite(ledPin1, LOW);
    digitalWrite(LED_BUILTIN, LOW);
//    delay(400);
  }
  else
  { digitalWrite(ledPin1, HIGH);
    digitalWrite(ledPin2, HIGH);
    digitalWrite(ledPin3, HIGH);
    digitalWrite(LED_BUILTIN, HIGH);

    delay(200);
    digitalWrite(ledPin1, LOW);
    digitalWrite(ledPin2, LOW);
    digitalWrite(ledPin3, LOW);
    digitalWrite(LED_BUILTIN, LOW);

//    delay(400);
  }
      delay(200);

}