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

// Membuat objek RTC dan LCD
RTC_DS1307 rtc;
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Nama-nama hari
char daysOfTheWeek[7][12] = {
  "Minggu", "Senin", "Selasa", "Rabu",
  "Kamis", "Jumat", "Sabtu"
};

void setup() {
  Serial.begin(57600);

  // Memulai LCD
  lcd.init();
  lcd.backlight();

  // Memulai RTC
  if (!rtc.begin()) {
    lcd.setCursor(0, 0);
    lcd.print("RTC tidak ada!");
    while (1);
  }

  // Mengatur waktu jika RTC belum berjalan
  if (!rtc.isrunning()) {
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }

  lcd.setCursor(0, 0);
  lcd.print("Jam Digital RTC");
  delay(2000);
  lcd.clear();
}

void loop() {
  // Membaca tanggal dan waktu dari RTC
  DateTime now = rtc.now();

  // Baris pertama: menampilkan jam
  lcd.setCursor(0, 0);
  lcd.print("Jam: ");

  if (now.hour() < 10) lcd.print("0");
  lcd.print(now.hour());
  lcd.print(":");

  if (now.minute() < 10) lcd.print("0");
  lcd.print(now.minute());
  lcd.print(":");

  if (now.second() < 10) lcd.print("0");
  lcd.print(now.second());
  lcd.print("  ");

  // Baris kedua: menampilkan tanggal
  lcd.setCursor(0, 1);

  if (now.day() < 10) lcd.print("0");
  lcd.print(now.day());
  lcd.print("/");

  if (now.month() < 10) lcd.print("0");
  lcd.print(now.month());
  lcd.print("/");

  lcd.print(now.year());
  
  delay(1000);
}