#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#if defined(ARDUINO) && ARDUINO >= 100
#define printByte(args)  write(args);
#else
#define printByte(args)  print(args,BYTE);
#endif

uint8_t heart[8] = {
  0b00000,
  0b01010,
  0b11111,
  0b11111,
  0b01110,
  0b00100,
  0b00000,
  0b00000
};

LiquidCrystal_I2C lcd(0x27, 16, 2);  // set the LCD address to 0x27 for a 16 chars and 2 line display

void setup()
{
  lcd.init();   // initialize the lcd 
  lcd.backlight();
  
  lcd.createChar(0, heart);

  lcd.home();
  lcd.print("Hello world...");
  lcd.setCursor(0, 1);
  lcd.print("I ");
  lcd.printByte(0);
  lcd.print(" I2C!");

  delay(5000);
  lcd.clear();
}

uint8_t i = 0;

void loop()
{
  lcd.clear();  // Clear previous characters

  // Print "Codes 0x00-0x10"
  lcd.print("Codes 0x");
  lcd.print(i, HEX);
  lcd.print("-0x");
  lcd.print(i+16, HEX);

  lcd.setCursor(0, 1);  // Set cursor at start of second row
  for (int j = 0; j < 16; j++)
  {
    lcd.printByte(i+j);
  }
  i+=16;

  delay(1000);  // Wait so we can read the data
}