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

#define BUTTON_PIN 2      // Button connected to digital pin 2
#define DEBOUNCE_DELAY 50 // Debounce delay in milliseconds

LiquidCrystal_I2C lcd(0x27, 16, 2);  // 16x2 LCD, address 0x27

volatile int buttonCount = 0;
bool buttonState = HIGH;
bool lastButtonState = HIGH;
unsigned long lastDebounceTime = 0;

void setup() {
    pinMode(BUTTON_PIN, INPUT_PULLUP);  // Set button pin as input with internal pull-up
    lcd.begin(16, 2);                   // Initialize the LCD
    lcd.backlight();                    // Turn on the backlight
    Serial.begin(9600);                 // Start serial communication

    lcd.setCursor(0, 0);
    lcd.print("Button Counter");
    lcd.setCursor(0, 1);
    lcd.print("Count: 0");
}

void loop() {
    int reading = digitalRead(BUTTON_PIN);  // Read the button state

    // Debounce the button press
    if (reading != lastButtonState) {
        lastDebounceTime = millis();
    }

    // Only increment count if the debounce time has passed
    if ((millis() - lastDebounceTime) > DEBOUNCE_DELAY) {
        if (reading == LOW && buttonState == HIGH) {  // Button was pressed
            buttonCount++;  // Increment the button count
            Serial.print("Count: ");
            Serial.println(buttonCount);

            lcd.setCursor(7, 1);
            lcd.print("      ");  // Clear previous count
            lcd.setCursor(7, 1);
            lcd.print(buttonCount);  // Display new count
        }
        buttonState = reading;  // Update the button state
    }

    lastButtonState = reading;  // Store the previous button state for the next loop
}