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

// Create RTC and LCD objects
RTC_DS1307 rtc;
LiquidCrystal_I2C lcd(0x27, 16, 2);  // Adjust I2C address if needed (0x27 or 0x3F)

void setup() {
  // Start serial
  Serial.begin(115200);

  // Init LCD
  lcd.init();
  lcd.backlight();

  // Init RTC
  if (!rtc.begin()) {
    lcd.setCursor(0, 0);
    lcd.print("RTC not found");
    while (1);
  }

  if (!rtc.isrunning()) {
    lcd.setCursor(0, 0);
    lcd.print("RTC not running");
    // Uncomment below line to set RTC to current compile time
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }
}

void loop() {
  DateTime now = rtc.now();

  // Print to serial
  Serial.print(now.year(), DEC);
  Serial.print('/');
  Serial.print(now.month(), DEC);
  Serial.print('/');
  Serial.print(now.day(), DEC);
  Serial.print(" ");
  Serial.print(now.hour(), DEC);
  Serial.print(':');
  Serial.print(now.minute(), DEC);
  Serial.print(':');
  Serial.println(now.second(), DEC);

  // Show on LCD
  lcd.setCursor(0, 0);
  lcd.print("Time: ");
  if (now.hour() < 10) lcd.print("0");
  lcd.print(now.hour(), DEC);
  lcd.print(":");
  if (now.minute() < 10) lcd.print("0");
  lcd.print(now.minute(), DEC);
  lcd.print(":");
  if (now.second() < 10) lcd.print("0");
  lcd.print(now.second(), DEC);

  lcd.setCursor(0, 1);
  lcd.print("Date: ");
  if (now.day() < 10) lcd.print("0");
  lcd.print(now.day(), DEC);
  lcd.print("/");
  if (now.month() < 10) lcd.print("0");
  lcd.print(now.month(), DEC);
  lcd.print("/");
  lcd.print(now.year(), DEC);

  delay(1000);
}