Library Support Functions

 LiquidCrystal_I2C() //set the LCD address for a 16 chars and 2 line display

 init() //Initialization for the LCD

 clear() //clear display, set cursor position to zero

 home() //set cursor position to zero

 createChar() //Fill the first 8 CGRAM locations with custom characters

 setCursor() //set the position of the cursor

 cursor() //Turns the underline cursor on

 noCursor() //Turns the underline cursor off

 blink() //Turn on the blinking cursor

 noBlink() //Turn off the blinking cursor

 display() //Turn the display on(quickly)

 noDisplay() //Turn the display 0ff(quickly)

 backlight() //Turn the backlight on

 noBacklight() //Turn the backlight off

 scrollDisplayLeft() //Make the display scroll left without changing the RAM

 scrollDisplayRight() //Make the display scroll right without changing the RAM

 autoscroll() //This will 'right justify' text from the cursor

 noAutoscroll() //This will 'left justify' text from the cursor

 leftToRight() //This is for text that flows Left to Right

 rightToLeft() //This is for text that flows Right to Left

Sample Code

Download Sample code and library

//DFRobot.com

//Compatible with the Arduino IDE 1.0

//Library version:1.1

#include <Wire.h>

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x20,16,2);

// set the LCD address to 0x20 for a

16 chars and 2 line display

void setup()

{

lcd.init();

// initialize the lcd