esp-idf-ds1302

DS1302 RTC Driver for esp-idf

I ported from here.

Software requirements

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.

Installation

git clone https://github.com/nopnop2002/esp-idf-ds1302
cd esp-idf-ds1302
idf.py menuconfig
idf.py flash

Wireing

DS1302		ESP32	ESP32Sn/Hn/Cn
CLK	--	GPIO15	GPIO1
DAT	--	GPIO16	GPIO2
RST	--	GPIO17	GPIO3
GND	--	GND	GND
VCC	--	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.

Comparison with other RTCs

This module has a large time lag.
I recommend the DS3231 RTC.
https://github.com/nopnop2002/esp-idf-ds3231