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

master code

#include
#include
LiquidCrystal lcd(12,11,5,4,3,2);
void setup()
{
lcd.begin(16,2);
lcd.setCursor(0,0);
lcd.print("skill lync");
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(8,1);
byte MasterReceive = Wire.read();
int potvalue = analogRead(A0);
byte MasterSend = map(potvalue,0,1023,0,127);
Wire.beginTransmission(8);
Wire.write(MasterSend);
Wire.endTransmission();
lcd.setCursor(0,0);
lcd.print(">> the Master <<");
lcd.setCursor(0,1);
lcd.print(">> SlaveVal <<");
lcd.print(MasterReceive);
Serial.println("Master Recevied From Slave");
Serial.println(MasterReceive);
delay(500);
}

slave code

#include
#include
LiquidCrystal lcd(12,11,5,4,3,2);
byte SlaveReceived =0;
void setup()
{
lcd.begin(16,2);
lcd.setCursor(0,0);
lcd.print("skill lync");
lcd.setCursor(0,1);
lcd.print(" I2C arduino 2 arduino ");
delay(5000);
lcd.clear();
Serial.begin(9600);
Wire.begin(8);
Wire.onReceive(receiveEvent);
Wire.onRequest(requestEvent);
}
void loop()
{
lcd.setCursor(0,0);
lcd.print(">>the Slave<<");
lcd.setCursor(0,1);
lcd.print(">>MasterVal<<");
lcd.print(SlaveReceived);
Serial.println("Master Recevied From Master");
Serial.println(SlaveReceived);
delay(500);
lcd.clear();
}
void receiveEvent(int howMany)
{
SlaveReceived =Wire.read();
}
void requestEvent()
{
int potvalue =analogRead(A0);
byte SlaveSend = map(potvalue,0,1023,0,127);
Wire.write(SlaveSend);
}