Project 1 - Interfacing a 16*2 LCD with Arduino using I2C protocol

#include <Wire.h>

#include <LiquidCrystal.h>

LiquidCrystal lcd(2, 7, 8, 9, 10, 11);

void setup() {

lcd.begin(16, 2);

lcd.setCursor(0, 0);

lcd.print(" >>Project 1 of Fundamentals of Embedded system by sanket awasthy");

lcd.setCursor(0, 1);

lcd.print(" I2C Arduino 2 Arduino// ");

for (int i=0; i< 16; i++) {

lcd.scrollDisplayLeft();

delay(100);

}

delay (2000);

lcd.clear();

Serial.begin(9600);

Wire.begin();

}

void loop() {

Wire.requestFrom(2,1);

byte MasterReceive = Wire.read();

int potvalue = analogRead(A0);

byte MasterSend = map (potvalue, 0, 1023,0, 127);

Wire.beginTransmission (2);

Wire.write(MasterSend);

Wire.endTransmission();

lcd.setCursor(0,0);

lcd.print(" Master ");

lcd.setCursor(0, 1);

lcd.print (" Slave ");

lcd.print (MasterReceive);

Serial.println(" Master received from slave");

Serial.println(MasterReceive);

delay (500);

lcd.clear();

}