#include <RTClib.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
RTC_DS1307 rtc;

#define tombol_hijau A0
#define tombol_biru  A1
#define led_biru     11
#define led_hijau    12

int jam,menit,detik,tanggal,bulan,tahun,hari;
char simpan[33];

void setup() {
  lcd.backlight(); lcd.init();
  lcd.setCursor(3,0); lcd.print("SAYA LAGI PKL");
  if(rtc.begin()) {
    lcd.setCursor(0,1); lcd.print("RTC OKE");
  } else {
    lcd.setCursor(0,1); lcd.print("RTC ERROR");
  }
  pinMode(tombol_hijau,INPUT_PULLUP);
  pinMode(tombol_biru,INPUT_PULLUP);
  pinMode(led_biru,OUTPUT);
  pinMode(led_hijau,OUTPUT);
  delay(2000); lcd.clear();
  rtc.adjust(DateTime(2025, 6, 17, 17, 4, 50));
}

void loop() {
  DateTime now = rtc.now();
  jam = now.hour();
  menit = now.minute();
  detik = now.second();
  hari = now.dayOfTheWeek();
  tanggal = now.day();
  bulan = now.month();
  tahun = now.year();

  if(jam==18 && menit==5 && detik==10)  digitalWrite(led_hijau,HIGH);
  else if(detik==20) digitalWrite(led_biru,HIGH);
  else if(detik==40) {
    digitalWrite(led_hijau,LOW); digitalWrite(led_biru,LOW);
  }

  lcd.setCursor(0,0); //JAM 10:15:06 WIB
  sprintf(simpan," TGL %02d-%02d-%04d ",tanggal,bulan,tahun);
  lcd.print(simpan);
  
  lcd.setCursor(0,1); //JAM 10:15:06 WIB
  sprintf(simpan,"JAM %02d:%02d:%02d WIB",jam,menit,detik);
  lcd.print(simpan); delay(300);
  lcd.setCursor(0,1); //JAM 10:15:06 WIB
  sprintf(simpan,"JAM %02d %02d %02d WIB",jam,menit,detik);
  lcd.print(simpan); delay(300);
}