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

LiquidCrystal_I2C lcd(0x27, 16, 2);
RTC_DS1307 rtc;

// set jam bel disini
int jam[3] = {7, 7, 7};

// set menit disini
int menit[3] = {23, 25, 27};

byte alarm[8] = {
  B00100,
  B01110,
  B01110,
  B01110,
  B11111,
  B00100,
  B00000,
  B00100
};

void setup() {

  pinMode(7, OUTPUT);

  lcd.init();
  lcd.backlight();

  lcd.createChar(0, alarm);

  lcd.setCursor(0,0);
  lcd.print(" BELL OTOMATIS ");

  lcd.setCursor(0,1);
  lcd.print(" PETANI.KODING ");

  delay(2000);
  lcd.clear();

  if (!rtc.begin()) {
    lcd.setCursor(0,0);
    lcd.print(" RTC ERROR!!! ");
    while (1);
  }

  if (!rtc.isrunning()) {
    lcd.setCursor(0,0);
    lcd.print(" SET WAKTU!!! ");

    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }
}

void loop() {

  DateTime now = rtc.now();

  lcd.setCursor(0,0);
  lcd.print(" JAM SEKARANG: ");

  lcd.setCursor(3,1);
  lcd.print(now.hour());
  lcd.print(":");
  lcd.print(now.minute());
  lcd.print(":");
  lcd.print(now.second());
  lcd.print("   ");

  if ((now.hour() == jam[0] ||
       now.hour() == jam[1] ||
       now.hour() == jam[2]) &&

      (now.minute() == menit[0] ||
       now.minute() == menit[1] ||
       now.minute() == menit[2])) {

    for (int i = 0; i < 5; i++) {

      lcd.setCursor(0,1);
      lcd.write(0);

      tone(7, 500, 500);
      delay(500);

      lcd.setCursor(0,1);
      lcd.print(" ");

      noTone(7);
      delay(500);
    }
  }

  delay(1000);
}