esp-idf-mpr121

MPR121 Capacitive Touch Driver for esp-idf.

I ported from here.

Software requirements

ESP-IDF V4.4/V5.x.
ESP-IDF V5.0 is required when using ESP32-C2.
ESP-IDF V5.1 is required when using ESP32-C6.

Hardware requirements

MPR121 Capacitive Touch switch.

Installation

git clone https://github.com/nopnop2002/esp-idf-mpr121
cd esp-idf-mpr121
idf.py set-target {esp32/esp32s2/esp32s3/esp32c2/esp32c3/esp32c6}
idf.py menuconfig
idf.py flash

Configuration

Wirering

MPR121		ESP32	ESP32-S2/S3	ESP32-C2/C3/C6
SCL	--	GPIO22	GPIO12	GPIO6
SDA	--	GPIO21	GPIO11	GPIO5
IRQ	--	GPIO15	GPIO18	GPIO4
GND	--	GND	GND	GND
VCC	--	3.3V	3.3V	3.3V

You can change it to any pin using menuconfig.

Screen Shot

Reference

https://github.com/nopnop2002/esp-idf-ttp229