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

char nama2hari[7][12] = {"Min", "Sen", "Sel", "Rab", "Kam", "Jum", "Sab"};
void setup () 
{
  Serial.begin(9600);
    lcd.begin (16,2);  // Set lcd 
      lcd.backlight();
        if (! rtc.begin()) 
          {
              lcd.print("RTC tidak tersedia");
                  while (1);
                    }
                    if (! rtc.isrunning()) 
                      {
                          lcd.print("RTC tidak berfungsi");
                            }
                                rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));//Update otomatis dari jam komputer
                                    //rtc.adjust(DateTime(2021, 11, 25, 17, 30, 0));// Atur waktu manual 
                                    }
                                    void loop () 
                                    {
                                        DateTime now = rtc.now();
                                            lcd.setCursor(0, 1);
                                                lcd.print("JAM:");
                                                    lcd.print(" ");
                                                        lcd.print(now.hour());
                                                            lcd.print(':');
                                                                lcd.print(now.minute());
                                                                    lcd.print(':');
                                                                        lcd.print(now.second());
                                                                        lcd.print("  ");

                                                                            lcd.setCursor(0, 0);
                                                                                lcd.print("TGL:");
                                                                                    lcd.print(" ");
                                                                                        //lcd.print(nama2hari[now.namahari()]);
                                                                                            lcd.print(" ");
                                                                                                lcd.print(now.day());
                                                                                                    lcd.print('/');
                                                                                                        lcd.print(now.month());
                                                                                                            lcd.print('/');
                                                                                                                lcd.print(now.year());
                                                                                                                    lcd.print("  ");   
                                                                                                                    }