From 0bb4ee61b23865d83a10ad2d460261412e578b72 Mon Sep 17 00:00:00 2001
From: nopnop2002 <hau26280@tree.odn.ne.jp>
Date: Sat, 18 Feb 2023 08:41:56 +0900
Subject: [PATCH] Added support for ESP32C2

---
 README.md              | 12 ++++++------
 main/Kconfig.projbuild |  9 +++++----
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/README.md b/README.md
index 1ac0681..dc270d1 100644
--- a/README.md
+++ b/README.md
@@ -3,22 +3,22 @@ MPR121 Capacitive Touch Driver for esp-idf.
 
 I ported from [here](https://github.com/BareConductive/mpr121).   
 
+# Software requirements
+ESP-IDF V4.4/V5.0.   
+ESP-IDF V5 is required when using ESP32-C2.   
+
 # Hardware requirements   
 MPR121 Capacitive Touch switch.
 
 ![mpr121-1](https://user-images.githubusercontent.com/6020549/147515909-cd50a16a-5c60-4bd0-bc32-c288f5d8ee88.JPG)
 
 
-# Software requirements
-esp-idf v4.4 or later.   
-This is because this version supports ESP32-C3.   
-
 # Installation
 
 ```Shell
 git clone https://github.com/nopnop2002/esp-idf-mpr121
 cd esp-idf-mpr121
-idf.py set-target {esp32/esp32s2/esp32s3/esp32c3}
+idf.py set-target {esp32/esp32s2/esp32s3/esp32c2/esp32c3}
 idf.py menuconfig
 idf.py flash
 ```
@@ -32,7 +32,7 @@ idf.py flash
 
 # Wirering
 
-|MPR121||ESP32|ESP32-S2/S3|ESP32-C3|
+|MPR121||ESP32|ESP32-S2/S3|ESP32-C2/C3|
 |:-:|:-:|:-:|:-:|:-:|
 |SCL|--|GPIO4|GPIO16|GPIO6|
 |SDA|--|GPIO5|GPIO17|GPIO7|
diff --git a/main/Kconfig.projbuild b/main/Kconfig.projbuild
index 4ef806a..01151c5 100644
--- a/main/Kconfig.projbuild
+++ b/main/Kconfig.projbuild
@@ -4,8 +4,9 @@ menu "MPR121 Configuration"
 		int
 		default 33 if IDF_TARGET_ESP32
 		default 46 if IDF_TARGET_ESP32S2
-		default 19 if IDF_TARGET_ESP32C3
 		default 48 if IDF_TARGET_ESP32S3
+		default 18 if IDF_TARGET_ESP32C2
+		default 19 if IDF_TARGET_ESP32C3
 
 	config I2C_ADDRESS
 		hex "I2C address"
@@ -16,8 +17,8 @@ menu "MPR121 Configuration"
 	config SCL_GPIO
 		int "SCL GPIO number"
 		range 0 GPIO_RANGE_MAX
-		default 6 if IDF_TARGET_ESP32C3 || IDF_TARGET_ESP32H2
 		default 16 if IDF_TARGET_ESP32S2 || IDF_TARGET_ESP32S3
+		default 6 if IDF_TARGET_ESP32C3 || IDF_TARGET_ESP32C2
 		default 4
 		help
 			GPIO number (IOxx) to SCL.
@@ -26,8 +27,8 @@ menu "MPR121 Configuration"
 	config SDA_GPIO
 		int "SDA GPIO number"
 		range 0 GPIO_RANGE_MAX
-		default 7 if IDF_TARGET_ESP32C3 || IDF_TARGET_ESP32H2
 		default 17 if IDF_TARGET_ESP32S2 || IDF_TARGET_ESP32S3
+		default 7 if IDF_TARGET_ESP32C3 || IDF_TARGET_ESP32C2
 		default 5
 		help
 			GPIO number (IOxx) to SDA.
@@ -36,8 +37,8 @@ menu "MPR121 Configuration"
 	config IRQ_GPIO
 		int "IRQ GPIO number"
 		range 0 GPIO_RANGE_MAX
-		default 8 if IDF_TARGET_ESP32C3 || IDF_TARGET_ESP32H2
 		default 18 if IDF_TARGET_ESP32S2 || IDF_TARGET_ESP32S3
+		default 8 if IDF_TARGET_ESP32C3 || IDF_TARGET_ESP32C2
 		default 15
 		help
 			GPIO number (IOxx) to IRQ.