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

#define DS3231_ADDRESS 0x68

LiquidCrystal_I2C lcd(0x27, 20, 4);

void setup() {
  Wire.begin();
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
}

void loop() {
  Wire.beginTransmission(DS3231_ADDRESS);
  Wire.write(0);
  Wire.endTransmission();

  Wire.requestFrom(DS3231_ADDRESS, 7);

  if (Wire.available()) {
    int second = bcdToDec(Wire.read());
    int minute = bcdToDec(Wire.read());
    int hour = bcdToDec(Wire.read() & 0b111111);
    int day = bcdToDec(Wire.read());
    int date = bcdToDec(Wire.read());
    int month = bcdToDec(Wire.read());
    int year = bcdToDec(Wire.read());

    Serial.print("Time: ");
    Serial.print(hour);
    Serial.print(":");
    Serial.print(minute);
    Serial.print(":");
    Serial.println(second);

    Serial.print("Date: ");
    Serial.print(date);
    Serial.print("/");
    Serial.print(month);
    Serial.print("/");
    Serial.println(year);

    lcd.setCursor(0, 0);
    lcd.print("Time: ");
    lcd.print(hour);
    lcd.print(":");
    lcd.print(minute);
    lcd.print(":");
    lcd.print(second);

    lcd.setCursor(0, 1);
    lcd.print("Date: ");
    lcd.print(date);
    lcd.print("/");
    lcd.print(month);
    lcd.print("/");
    lcd.print(year);
  
  lcd.setCursor(0, 2);
  lcd.print("BY ARVIND ,INDIA: ");
  
  lcd.setCursor(3, 3);
  lcd.print("917020336035 ");
  
  
  
  }

  delay(1000);
}

int bcdToDec(byte val) {
  return ((val / 16) * 10) + (val % 16);
}