#include "RTClib.h"

RTC_DS3231 rtc;

void setup() {
  Serial.begin(9600);

  // Initialize RTC over I2C
  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  // Set the RTC time only once (at first upload)
  // After uploading once, comment this line and upload again
  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

  Serial.println("RTC started");
}

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

  Serial.print("Date: ");
  Serial.print(now.year());
  Serial.print("/");
  Serial.print(now.month());
  Serial.print("/");
  Serial.print(now.day());

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

  delay(1000);
}