DS3231 library for the Arduino.
This library implements the following features:
- read/write of current time, both of the alarms,
control/status registers, aging register
- read of the temperature register, and of any address from the chip.
Author: Petre Rodan <email@example.com>
Available from: https://github.com/rodan/ds3231
License: GNU GPLv3
The DS3231 is a low-cost, extremely accurate I2C real-time clock
(RTC) with an integrated temperature-compensated crystal oscillator
(TCXO) and crystal.
support for ESP32 written by Helmut Tschemernjak