//library lcd
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2); //(.., jumlah kolom, jumlah baris)

//library rct
#include "RTClib.h"
RTC_DS1307 rtc;

//mendefinisikan pin
#define buttonStart 2
#define pinBuzzer 4

int counterValue = 0;
int buttonStartState = 0;
int buttonStartPressState = 0;


void setup() {
  // menampilkan backlight
  Serial
  lcd.init();
  lcd.backlight();

  pinMode(buttonStart, INPUT_PULLUP);
  pinMode(pinBuzzer, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  buttonStartState =  digitalRead(buttonStart);

  if(buttonStartState==LOW){
    counterValue++;

    //timer saat sama dengan 50
    if (countValue==50){
      tone(pinBuzzer, 1000);
      delay(1000);
      noTone(pinBuzzer);
      delay(1000);

      buttonStatusPresState=0;
      counterValue=0;
    }

    buttonStartPressState=1;
    digitalWrite(buttonStart, HIGH);

  }else if (buttonStartState==HIGH){
    buttonStartState
  }
}