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

#define RTC_ADDRESS 0x68

LiquidCrystal_I2C lcd(0x27, 16, 2);


void setup() {
  Wire.begin(); // Initialize the I2C communication
  lcd.init(); // Initialize the LCD
  lcd.backlight(); // Turn on the backlight of the LCD

}

void loop() {
  Wire.beginTransmission(RTC_ADDRESS);
  Wire.write(0);
  Wire.endTransmission();

  Wire.requestFrom(RTC_ADDRESS, 7); // Request 7 bytes of data

  // Read data from the RTC module
  int second = bcdToDec(Wire.read() & 0x7f); // Seconds (0-59)
  int minute = bcdToDec(Wire.read()); // Minutes (0-59)
  int hour = bcdToDec(Wire.read() & 0x3f); // Hours (0-23)
  Wire.read(); // Day of the week (discard)
  int day = bcdToDec(Wire.read()); // Day (1-31)
  int month = bcdToDec(Wire.read()); // Month (1-12)
  int year = bcdToDec(Wire.read()); // Year (0-99)

  // Display the date and time on the LCD
  lcd.setCursor(0, 0); // Set cursor to the first column of the first row
  lcd.print("Date: ");
  print2Digits(day);
  lcd.print("-");
  print2Digits(month);
  lcd.print("-");
  print2Digits(year);

  lcd.setCursor(0, 1); // Set cursor to the first column of the second row
  lcd.print("Time: ");
  print2Digits(hour);
  lcd.print(":");
  print2Digits(minute);
  lcd.print(":");
  print2Digits(second);

  delay(1000); // Update once per second
}
int bcdToDec(int bcd) {
  return ((bcd / 16) * 10) + (bcd % 16);
}

// Function to print a number with leading zero if necessary
void print2Digits(int number) {
  if (number < 10) {
    lcd.print("0");
  }
  lcd.print(number);
}