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

// Initialize the LCD with I2C address 0x27 and dimensions 16x2
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Set up LED pin
const int ledPin = 16;  // GPIO16 for ESP32
int blinkCount = 0;     // Variable to store blink count

void setup() {
  // Initialize I2C with custom SDA and SCL pins
  Wire.begin(21, 19);  // SDA on GPIO 21, SCL on GPIO 19

  // Initialize LCD with columns and rows
  lcd.begin(16, 2);
  lcd.backlight();    // Turn on LCD backlight
  pinMode(ledPin, OUTPUT);

  // Display initial message
  lcd.setCursor(0, 0);
  lcd.print("LED Blink Count:");
  lcd.setCursor(0, 1);
  lcd.print(blinkCount);
}

void loop() {
  // Turn LED on
  digitalWrite(ledPin, HIGH);
  delay(500);         // Wait for 0.5 second
  
  // Turn LED off
  digitalWrite(ledPin, LOW);
  delay(500);         // Wait for 0.5 second
  
  // Update blink count and display on LCD
  blinkCount++;
  lcd.setCursor(0, 1);
  lcd.print("                ");  // Clear previous count
  lcd.setCursor(0, 1);
  lcd.print(blinkCount);
}