#include <Wire.h>
#include <RTClib.h>
#include <LiquidCrystal.h>

RTC_DS3231 rtc;

LiquidCrystal lcd(9,8,6,5,4,3);

void setup () {
  lcd.begin(16, 2);
  if (! rtc.begin()) {
    lcd.print("Kelas XII TITL B");
    while (1);
    pinMode(10, OUTPUT);
  }

  if (rtc.lostPower()) {
    lcd.print("Reset waktu RTC");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }
}

void loop () {
  DateTime now = rtc.now();

  lcd.setCursor(6, 0);
  lcd.print("Jam: ");
  lcd.setCursor(4,1);
  lcd.print(now.hour(), DEC);
  lcd.print(':');
  lcd.print(now.minute(), DEC);
  lcd.print(':');
  lcd.print(now.second(), DEC);

  delay(1000);
  lcd.clear();

  tone(10,1000,50);
}