Adafruit RTClib

Introduction

This is a fork of JeeLab's fantastic real time clock library for Arduino.

For details on using this library with an RTC module like the DS1307, PCF8523, or DS3231, see the guide at: https://learn.adafruit.com/ds1307-real-time-clock-breakout-board-kit/overview

Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit!

Available classes

This library provides the following classes:

• Classes for manipulating dates, times and durations:
  • DateTime represents a specific point in time; this is the data type used for setting and reading the supported RTCs
  • TimeSpan represents the length of a time interval
• Interfacing specific RTC chips:
  • RTC_DS1307
  • RTC_DS3231
  • RTC_PCF8523
  • RTC_PCF8563
• RTC emulated in software; do not expect much accuracy out of these:
  • RTC_Millis is based on millis()
  • RTC_Micros is based on micros(); its drift rate can be tuned by the user

License

Original library by JeeLabs https://jeelabs.org/pub/docs/rtclib/, released to the public domain.

This version: MIT (see LICENSE)