#include <LCD_I2C.h>
#include <Wire.h>
#include "RTClib.h"

RTC_DS1307 rtc;
LCD_I2C lcd(0x27, 20, 4);

void setup() {
  Serial.begin(115200);
  Serial.println("Raspberry Pi Pico dengan RTC");
  if (! rtc.begin()) {
   Serial.println("Couldn't find RTC");
   while (1);
 }
 if (! rtc.isrunning()) {
   Serial.println("RTC is NOT running!");
   // following line sets the RTC to the date & time this sketch was compiled
   rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
   // This line sets the RTC with an explicit date & time, for example to set
   // January 21, 2014 at 3am you would call:
   // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
 } else {Serial.println("RTC started successfully");}
  lcd.begin();
  lcd.backlight();
  lcd.setCursor(1, 0);
  lcd.print("GROUP WA ARDUMEKA!");
}

void loop() {
  DateTime now = rtc.now();
  //buffer can be defined using following combinations:
  //hh - the hour with a leading zero (00 to 23)
  //mm - the minute with a leading zero (00 to 59)
  //ss - the whole second with a leading zero where applicable (00 to 59)
  //YYYY - the year as four digit number
  //YY - the year as two digit number (00-99)
  //MM - the month as number with a leading zero (01-12)
  //MMM - the abbreviated English month name ('Jan' to 'Dec')
  //DD - the day as number with a leading zero (01 to 31)
  //DDD - the abbreviated English day name ('Mon' to 'Sun')
   lcd.setCursor(0, 1);
   lcd.print(" RTC DS.1307 + PICO ");
   lcd.setCursor(0, 2);
   char buf4[] = "DD-MMM-YYYY";
   lcd.print(now.toString(buf4));
   lcd.setCursor(0, 3);
   char buf2[] = "hh:mm:ss";
   lcd.print(now.toString(buf2));
}