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

RTC_DS1307 rtc;

void setup() {
  Serial.begin(9600);
  
  // Initialize Wire library with ESP32 I2C pins
  Wire.begin(21, 22); // SDA = GPIO 21, SCL = GPIO 22
  rtc.begin();
  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  if (!rtc.isrunning()) {
    Serial.println("RTC is NOT running!");
    // Set initial time
    rtc.adjust(DateTime(2024, 3, 23, 8, 0, 0)); // Set to March 23, 2024, 08:00:00
  } else {
    Serial.println("RTC is running!");
  }
}

void loop() {
  DateTime now = rtc.now(); // Get the current time from RTC

  // Display date and time on Serial Monitor
  Serial.print(now.day(), DEC);
  Serial.print('/');
  Serial.print(now.month(), DEC);
  Serial.print('/');
  Serial.print(now.year(), DEC);
  Serial.print(" ");
  Serial.print(now.hour(), DEC);
  Serial.print(':');
  if (now.minute() < 10) Serial.print('0'); // Add leading zero to minutes if needed
  Serial.print(now.minute(), DEC);
  Serial.print(':');
  if (now.second() < 10) Serial.print('0'); // Add leading zero to seconds if needed
  Serial.print(now.second(), DEC);
  Serial.println();

  delay(1000); // Wait 1 second before repeating the loop
}