es32c2: Support for esp32c2

This includes some memory optimisations.
Also corresponding changes required for idf 5.0.

device_hal/button_driver/button/CMakeLists.txt

@@ -3,6 +3,10 @@ include($ENV{ESP_MATTER_DEVICE_PATH}/esp_matter_device.cmake)
 set(src_dirs )
 set(requires driver)
 
+if("${IDF_VERSION_MAJOR}.${IDF_VERSION_MINOR}" VERSION_GREATER_EQUAL "5.0")
+    list(APPEND requires esp_adc)
+endif()
+
 if ("${button_type}" STREQUAL "hollow_button")
     list(APPEND src_dirs hollow_button)
 endif()

device_hal/button_driver/button/include/button_adc.h

@@ -15,7 +15,12 @@
 #define _IOT_BUTTON_ADC_H_
 
 #include "driver/gpio.h"
+#include <esp_idf_version.h>
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)
+#include "esp_adc/adc_continuous.h"
+#else
 #include "driver/adc.h"
+#endif
 
 #ifdef __cplusplus
 extern "C" {
@@ -30,7 +35,7 @@ extern "C" {
  * 
  */
 typedef struct {
-    adc1_channel_t adc_channel;  /**< Channel of ADC */
+    adc_channel_t adc_channel;  /**< Channel of ADC */
     uint8_t button_index;        /**< button index on the channel */
     uint16_t min;                /**< min voltage in mv corresponding to the button */
     uint16_t max;                /**< max voltage in mv corresponding to the button */
@@ -59,7 +64,7 @@ esp_err_t button_adc_init(const button_adc_config_t *config);
  *      - ESP_OK on success
  *      - ESP_ERR_INVALID_ARG   Arguments is invalid.
  */
-esp_err_t button_adc_deinit(adc1_channel_t channel, int button_index);
+esp_err_t button_adc_deinit(adc_channel_t channel, int button_index);
 
 /**
  * @brief Get the adc button level

device_hal/device/esp32c2_devkit_m/device.c

@@ -0,0 +1,43 @@
+// Copyright 2021 Espressif Systems (Shanghai) CO LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License
+
+#include <esp_log.h>
+#include <iot_button.h>
+#include <led_driver.h>
+
+#define LED_GPIO_PIN GPIO_NUM_8
+#define LED_CHANNEL 0 /* RMT_CHANNEL_0 */
+#define BUTTON_GPIO_PIN GPIO_NUM_9
+
+static const char *TAG = "device";
+
+led_driver_config_t led_driver_get_config()
+{
+    led_driver_config_t config = {
+        .gpio = LED_GPIO_PIN,
+        .channel = LED_CHANNEL,
+    };
+    return config;
+}
+
+button_config_t button_driver_get_config()
+{
+    button_config_t config = {
+        .type = BUTTON_TYPE_GPIO,
+        .gpio_button_config = {
+            .gpio_num = BUTTON_GPIO_PIN,
+            .active_level = 0,
+        }
+    };
+    return config;
+}

device_hal/device/esp32c2_devkit_m/esp_matter_device.cmake

@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.5)
+if (NOT ("${IDF_TARGET}" STREQUAL "esp32c2" ))
+    message(FATAL_ERROR "please set esp32c2 as the IDF_TARGET using 'idf.py set-target esp32c2'")
+endif()
+
+SET(device_type     esp32c2_devkit_m)
+SET(led_type        gpio)
+SET(button_type     hollow_button)
+
+SET(extra_components_dirs_append "$ENV{ESP_MATTER_DEVICE_PATH}/../../led_driver"
+                                 "$ENV{ESP_MATTER_DEVICE_PATH}/../../button_driver/button")

device_hal/led_driver/hollow_led/led_driver.c

@@ -59,7 +59,7 @@ esp_err_t led_driver_set_saturation(led_driver_handle_t handle, uint8_t saturati
 
 esp_err_t led_driver_set_temperature(led_driver_handle_t handle, uint32_t temperature)
 {
-    ESP_LOGI(TAG, "Setting temperature to: %d", temperature);
+    ESP_LOGI(TAG, "Setting temperature to: %lu", temperature);
     /* Set the color temp here*/
 
     return ESP_OK;