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

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

const int buttonPin = 2;   // Pushbutton pin
const int buzzerPin = 9;   // Buzzer pin

int buttonState = 0;       // Variable to store the button state

void setup() {
  pinMode(buttonPin, INPUT);
  pinMode(buzzerPin, OUTPUT);

  // Initialize the LCD
  lcd.begin(16, 2);  // Provide the number of columns and rows
  lcd.backlight();

  // Print initial message to the LCD
  lcd.setCursor(0, 0);
  lcd.print("BUZZER OFF!");
}

void loop() {
  // Read the state of the pushbutton
  buttonState = digitalRead(buttonPin);

  if (buttonState == HIGH) {
    // Debounce delay
    delay(50);

    if (digitalRead(buttonPin) == HIGH) {
      // If the button is pressed
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("BUZZER ON!");

      // Play a simple tune on the buzzer
      tone(buzzerPin, 440);  // Play note A4
      delay(500);
      tone(buzzerPin, 494);  // Play note B4
      delay(500);
      tone(buzzerPin, 523);  // Play note C5
      delay(500);
      noTone(buzzerPin);     // Stop the tone

      // Wait for button release
      while (digitalRead(buttonPin) == HIGH) {}
      
      // Clear LCD after playing the song and update the message
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("BUZZER OFF!");
    }
  }
}