// Include the required Wire library for I2C<br>

#include <Wire.h>

int x = 0;
int ledPin1 = 9;
int ledPin2 = 10;
int ledPin3 = 11;

void setup() {
  // Define the LED pin as Output
  pinMode (LED_BUILTIN, OUTPUT);
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  Serial.begin(9600);

  // Start the I2C Bus as Slave on address 9
  Wire.begin(9);
  // Attach a function to trigger when something is received.
  Wire.onReceive(receiveEvent);
}
void receiveEvent(int bytes) {
  x = Wire.read();    // read one character from the I2C
}
void loop() {
  //If value received is 0 blink LED for 200 ms
  Serial.println(x);

  if (x == 0) {
    digitalWrite(ledPin3, HIGH);
    delay(400);
    digitalWrite(ledPin3, LOW);
    delay(400);
  }
  //If value received is 3 blink LED for 400 ms
  if (x == 2) {
    digitalWrite(ledPin2, HIGH);
    delay(400);
    digitalWrite(ledPin2, LOW);
    delay(400);
  }
  if (x == 4) {
    digitalWrite(ledPin1, HIGH);
    delay(400);
    digitalWrite(ledPin1, LOW);
    delay(400);
  }
  else
  { digitalWrite(ledPin1, HIGH);
    digitalWrite(ledPin2, HIGH);
    digitalWrite(ledPin3, HIGH);
    delay(400);
    digitalWrite(ledPin1, LOW);
    digitalWrite(ledPin2, LOW);
    digitalWrite(ledPin3, LOW);
    delay(400);
  }
}