README.md

esp-idf-ds3231

DS3231 RTC Driver for esp-idf

I forked from here.

Installation

git clone https://github.com/nopnop2002/esp-idf-ds3231
cd esp-idf-ds3231
idf.py menuconfig
idf.py flash

Wireing

DS3231		ESP32	ESP32S2/S3/H2	ESP32Cn
SCL	--	GPIO22	GPIO02	GPIO06
SDA	--	GPIO21	GPIO01	GPIO05
GND	--	GND	GND	GND
VCC	--	3.3V	3.3V	3.3V

You can change GPIO using menuconfig.

Set Clock Mode

This mode set RTC initial value using NTP time Server.
You have to set these config value using menuconfig.

You have to set gpio & NTP Server using menuconfig.

Get Clock Mode

This mode take out the time from a RTC clock.
You have to change mode using menuconfig.

Get the time difference of NTP and RTC

This mode get time over NTP, and take out the time from a RTC clock.
Calculate time difference of NTP and RTC.
You have to change mode using menuconfig.

Time difference of 1 week later.

Time difference of 1 month later.

References

https://github.com/nopnop2002/esp-idf-ds1302

https://github.com/nopnop2002/esp-idf-ds1307

https://github.com/nopnop2002/esp-idf-pcf8563