// LCD custom characters

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

LiquidCrystal_I2C lcd (0x27, 16, 2);

byte c0[8] = {B11111, B11111, B11111, B11111, B11111, B11111, B11111, B11111};
byte c1[8] = {B11111, B11110, B11110, B11110, B11110, B11110, B11110, B11111};
byte c2[8] = {B11111, B11100, B11100, B11100, B11100, B11100, B11100, B11111};
byte c3[8] = {B11111, B11000, B11000, B11000, B11000, B11000, B11000, B11111};
byte c4[8] = {B11111, B10000, B10000, B10000, B10000, B10000, B10000, B11111};
byte c5[8] = {B11111, B00000, B00000, B00000, B00000, B00000, B00000, B11111};
byte c6[8] = {B11111, B00001, B00001, B00001, B00001, B00001, B00001, B11111};
byte c7[8] = {B00000, B10001, B01010, B00100, B00100, B01010, B10001, B00000};

void setup()
{
  lcd.init (); // I2C library does not use .display or .begin or .clear
  lcd.backlight();

  // custom characters in CG-RAM
  lcd.createChar(0, c0);
  lcd.createChar(1, c1);
  lcd.createChar(2, c2);
  lcd.createChar(3, c3);
  lcd.createChar(4, c4);
  lcd.createChar(5, c5);
  lcd.createChar(6, c6);
  lcd.createChar(7, c7);
  // lcd.createChar(8, c8);
  
    for (int i = 0; i < 8; i++)
    {
      lcd.setCursor(i + 4, 0);
      lcd.write(i);
    }
}
void loop()
{}