#include <Wire.h>
#include <RTClib.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
RTC_DS3231 rtc;
char daysOfTheWeek[7][12] = {"Ahad", "Senin", "Selasa", "Rabu", "Kamis", "Jum'at", "Sabtu"};
int jam, menit, detik;
int tanggal, bulan, tahun;
int i;
String hari;

void setup () {
  Wire.begin();
  lcd.init();
  lcd.backlight();
  lcd.print("yes");
  Serial.begin(9600);
  delay(100);
  lcd.clear();
  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    while (1) delay(10);
  }
  // rtc.adjust(DateTime(F(_DATE), F(TIME_)));
  // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
}

void loop () {
  DateTime now = rtc.now();
  jam     = now.hour();
  menit   = now.minute();
  detik   = now.second();
  tanggal = now.day();
  bulan   = now.month();
  tahun   = now.year();
  hari    = daysOfTheWeek[now.dayOfTheWeek()];
  Serial.println(String() + hari + ", " + tanggal + "-" + bulan + "-" + tahun);
  Serial.println(String() + jam + ":" + menit);
  Serial.println();
  lcd.setCursor(0,0);
  lcd.print(String() + hari + "," + tanggal + "-" + bulan + "-" + tahun);
  lcd.setCursor(0,1);
  lcd.print(String() + jam + ":" + menit + ":" + detik);
  delay(1000);
  lcd.clear();

}