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

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};

void setup () {
  Serial.begin(115200);

  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    abort();
  }
}

void loop () {
  lcd.init();
    DateTime now = rtc.now();
    //ช่วง ปีเดือน วัน
    lcd.setCursor(0,0);
    lcd.print(now.year(), DEC);
    lcd.setCursor(4,0);
    lcd.print("/");
    lcd.setCursor(5,0);
    lcd.print(now.month(), DEC);
    lcd.setCursor(6,0);
    lcd.print("/");
    lcd.setCursor(7,0);
    lcd.print(now.day(), DEC);


    //ช่วงเวลา ชั่วโมง นาที วินาที
    lcd.setCursor(10,1);
    lcd.print(daysOfTheWeek[now.dayOfTheWeek()]);
    lcd.print("/");
    lcd.setCursor(3,1);

    lcd.setCursor(0,1);
    lcd.print(now.hour(), DEC);
    lcd.print("/");
    lcd.setCursor(5,1);

    lcd.setCursor(3,1);
    lcd.print(now.minute(), DEC);
    lcd.print("/");
    lcd.setCursor(8,0);

    lcd.setCursor(6,1);
    lcd.print(now.second(), DEC);
    
    

    Serial.print("Current time: ");
    Serial.print(now.year(), DEC);
    Serial.print('/');
    Serial.print(now.month(), DEC);
    Serial.print('/');
    Serial.print(now.day(), DEC);
    Serial.print(" (");
    Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
    Serial.print(") ");
    Serial.print(now.hour(), DEC);
    Serial.print(':');
    Serial.print(now.minute(), DEC);
    Serial.print(':');
    Serial.print(now.second(), DEC);
    Serial.println();


  Serial.println();
  delay(30);
}