DS3231 RTC Driver for esp-idf
ESP-IDF V5.0 or later.
ESP-IDF V4.4 release branch reached EOL in July 2024.
ESP-IDF V5.1 is required when using ESP32-C6.
Note for ESP-IDF V5.2.
A new i2c driver is now available in ESP-IDF V5.2.
Under ESP-IDF V5.2 or later, this project uses a new i2c driver.
git clone https://github.com/nopnop2002/esp-idf-ds3231
cd esp-idf-ds3231
idf.py menuconfig
idf.py flash| 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.
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.
This mode take out the time from a RTC clock.
You have to change mode using menuconfig.
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.
https://github.com/nopnop2002/esp-idf-ds1302