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

#define I2C_SDA 21
#define I2C_SCL 22

// Set the LCD address to 0x27 (this may vary depending on your LCD module)
LiquidCrystal_I2C lcd(0x27, 20, 4);  // 20 columns, 4 rows

void setup()
{
  Serial.begin(115200);

  // Initialize I2C with custom SDA and SCL pins
  Wire.begin(I2C_SDA, I2C_SCL);

  Serial.println("LCD SETUP");

  // Initialize the LCD
  lcd.init(); 

  // Turn on the backlight
  lcd.backlight();

  // Print a message to the LCD
  lcd.setCursor(3, 0);
  lcd.print("Hello, World!");
  lcd.setCursor(2, 1);
  lcd.print("ESP32 + LCD 20x4");

  lcd.setCursor(0, 2);
  lcd.print("Row 3 Testing...");
  lcd.setCursor(0, 3);
  lcd.print("Row 4 OK!");
}

void loop()
{
  // You can update the LCD display here if needed
}