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


RTC_DS1307 rtc;
char daysOfTheWeek[7][12] = {"Ahad", "Senin", "Selasa", "Rabu", "Kamis", "Jum'at", "Sabtu"};

LiquidCrystal_I2C lcd(0x27, 16, 2);

const int buzzer = 18;

void setup() {
  Serial.begin(9600);
  Wire.begin();

  if (! rtc.begin()) 
  {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    abort();
  }

  lcd.init();
  lcd.backlight();
  lcd.print("yes");

  pinMode(buzzer, OUTPUT);
}

void loop() {
  DateTime now = rtc.now();
  lcd.setCursor( 0,0);
  lcd.print(daysOfTheWeek[now.dayOfTheWeek()]);
  lcd.print(",");
  lcd.print(now.day());
  lcd.print("-");
  lcd.print(now.month());
  lcd.print("-");
  lcd.print(now.year());

  lcd.setCursor(4,1);
  lcd.print(now.hour());
  lcd.print(":");
  lcd.print(now.minute());
  lcd.print(":");
  lcd.print(now.second());

  if ((now.hour() == 7 and now.minute() == 0 and now.second() == 0)) {
    
  }
  if (now.minute() == 20){
    tone(buzzer, HIGH);
    //setiap menit 20 buzzer berbunyi
  }
  else {
    noTone(buzzer);
  }
}