Project 1 - Interfacing a 16*2 LCD with Arduino using I2C protocol
//SLAVE CODE
#include<LiquidCrystal.h> // Header to use LCD functions
#include<Wire.h> // Header to use I2C communication
LiquidCrystal lcd(2,3,4,5,6,7); //pins connected to LCD
void setup()
{
Serial.begin(9600);
Wire.begin(8); //To begin I2C communication
Wire.onRequest(send); //To call the send function
lcd.begin(16,2); //To start the LCD display
lcd.clear(); //To clear the display
}
void loop()
{
lcd.setCursor(0,0); //To move the cursor to the begining
lcd.print("hi"); //To display in LCD
lcd.setCursor(0,1); //To move the cursor to the next line
lcd.println("Mssage sent"); //To display in LCD
}
void send()
{
char ch[17]="Skill "; //creating string
Wire.write(ch); //To send message to Master
}
//MASTER
#include <LiquidCrystal.h>
#include <Wire.h>
#include<LiquidCrystal.h> // Header to use LCD functions
#include<Wire.h>
LiquidCrystal lcd(2,3,4,5,6,7); //pins connected to LCD
char MasterReceive[16]; //String to get the message
void setup()
{
Serial.begin(9600);
Wire.begin(); //To begin I2C communication
lcd.begin(16,2);
lcd.clear();
}
void loop()
{
Wire.requestFrom(8,16);
lcd.setCursor(0,0);
lcd.print("HELLO"); //To print in display
lcd.setCursor(0,1);
int i=0;
while(0<Wire.available())
{
MasterReceive[i]=Wire.read(); //To print character by character
i++;
}
lcd.print(MasterReceive);
delay(1000);
Wire.end();
}