#include <ezButton.h>
#include <LiquidCrystal.h>
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
/// constants won't change
const int BUTTON_PIN = 7; // the number of the pushbutton pin
const int LED_PIN    = 8; // the number of the LED pin
const int buzzer = 9; //buzzer to arduino pin 9

ezButton button(BUTTON_PIN);  // create ezButton object that attach to pin 7;

// variables will change:
int ledState = LOW;   // the current state of LED
int buzzerState = LOW; 

void setup() {
  
  pinMode(LED_PIN, OUTPUT);   // set arduino pin to output mode
  pinMode(buzzer, OUTPUT); // Set buzzer - pin 9 as an output
  button.setDebounceTime(50); // set debounce time to 50 milliseconds
    lcd.begin(16, 2);
    lcd.clear();

}

void loop() {
  button.loop(); // MUST call the loop() function first
  lcd.setCursor(0, 0);
  lcd.print("Led is ");
  if(button.isPressed()) {



    // toggle state of LED
    ledState = !ledState;
    buzzerState = !buzzerState;
    // control LED arccoding to the toggleed sate
    digitalWrite(LED_PIN, ledState); 
    tone(buzzerState, 500);
  }
  if (ledState == HIGH) {
  lcd.print("ON ");
} else {
  lcd.print("OFF");
}


}