I2C COMMUNICATION PROTOCOL || CONTROLLING 2 LEDS WITH BUTTONS || MASTER ...

I2C MASTER CODE:-

#include <Wire.h>

int BTN1 = 6;

int BTN2 = 7;

int BUTTON1 = 0;

int BUTTON2 = 0;

void setup()

{

  Wire.begin();

  pinMode(BTN1, INPUT);

  pinMode(BTN2, INPUT);

}

void loop()

{

//   Wire.beginTransmission(6);// TRANSMIT TO DEVICE #1

//    Wire.beginTransmission(6);// TRANSMIT TO DEVICE #2

   

   Wire.beginTransmission(6);// TRANSMIT TO DEVICE #6

   BUTTON1 = digitalRead(BTN1);

   BUTTON2 = digitalRead(BTN2);

   

   Wire.write(BUTTON1);

   Wire.write(BUTTON2);

   Wire.endTransmission();

//   delay(500);

}

I2C SLAVE CODE:-

#include <Wire.h>

int LED1=12;

int LED2=13;

int BUTTON1 =LOW;

int BUTTON2 =LOW;

void setup()

{

//  Wire.begin(1);// RECEIVE FROM device #1

//  Wire.begin(2);// RECEIVE FROM device #2

  Wire.begin(6);// RECEIVE FROM device #6

  

  Wire.onReceive(receiveEvent); 

  pinMode(LED1, OUTPUT);

  pinMode(LED2, OUTPUT);

}

void loop()

{

  delay(100);

}

void receiveEvent(int howMany){

BUTTON1 = Wire.read();

BUTTON2 = Wire.read();

  

  if (BUTTON1 == HIGH){

  

        digitalWrite(LED1,HIGH);

  }

  else{

        digitalWrite(LED1,LOW);

  }

    if (BUTTON2 == HIGH){

  

        digitalWrite(LED2,HIGH);

  }

  else{

        digitalWrite(LED2,LOW);

  }

}