#include <Wire.h>
#include <TimeLib.h>
#include <DS1307RTC.h>
#include <LIquidCrystal_12C.h>
LiquidCrystal_12C lcd(0x27, 16, 2);
tmElements_t tm;
uint8_t jam[8] = {0x0, 0xe, 0x15, 0x17, 0x11, 0xe, 0x0};
void setup() {  
  lcd.init();
  lcd.backlight();
  lcd.createChar(0, jam);
}

void loop() {
  if (RTC.read(tm)) {
    lcd.setCursor(0, 0);
    lcd.print("Tgl = ");
    lcd.print(tm.Day);
    lcd.print('/');
    lcd.print(tm.Month);
    lcd.print('/');
    lcd.print(tmYearToCalendar(tm.Year));
    lcd.print("   ");
    lcd.setCursor(0, 1);
    lcd.write(0);
    lcd.print("jam = ");
    print2digits(tm.Hour);
    lcd.print(':');
    print2digits(tm.Minute);
    lcd.print(':');
    print2digits(tm.Second);
  }
else {
  if (RTC.chipPresent()) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Please Set Time");
  } else {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("RTC Error!");
  }
  delay(9000);
}
delay(1000);
}

void print2digits(int number) {
  if (number >= 0 && number < 10) {
    lcd.print('0');
  }
  lcd.print(number);
}