esp-idf-mpr121

MPR121 Capacitive Touch Driver for esp-idf.

I ported from here.

Hardware requirements

MPR121 Capacitive Touch switch.

Software requirements

esp-idf v4.4 or later.
This is because this version supports ESP32-C3.

Installation for ESP32

git clone https://github.com/nopnop2002/esp-idf-mpr121
cd esp-idf-mpr121
idf.py set-target esp32
idf.py menuconfig
idf.py flash

Installation for ESP32-S2

git clone https://github.com/nopnop2002/esp-idf-mpr121
cd esp-idf-mpr121
idf.py set-target esp32s2
idf.py menuconfig
idf.py flash

Installation for ESP32-C3

git clone https://github.com/nopnop2002/esp-idf-mpr121
cd esp-idf-mpr121
idf.py set-target esp32c3
idf.py menuconfig
idf.py flash

Configuration

Wirering

MPR121		ESP32	ESP32-S2	ESP32-C3
SCL	--	GPIO4	GPIO16	GPIO6
SDA	--	GPIO5	GPIO17	GPIO7
IRQ	--	GPIO15	GPIO18	GPIO8
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