添加智能灯固件代码

firmware/esp-idf/wumei-smart-firmware/components/button/include/button_adc.h

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+// Copyright 2020 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.
+#ifndef _IOT_BUTTON_ADC_H_
+#define _IOT_BUTTON_ADC_H_
+
+#include "driver/gpio.h"
+#include "driver/adc.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ADC_BUTTON_COMBINE(channel, index) ((channel)<<8 | (index))
+#define ADC_BUTTON_SPLIT_INDEX(data) ((uint32_t)(data)&0xff)
+#define ADC_BUTTON_SPLIT_CHANNEL(data) (((uint32_t)(data) >> 8) & 0xff)
+
+/**
+ * @brief adc button configuration
+ * 
+ */
+typedef struct {
+    adc1_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 */
+} button_adc_config_t;
+
+/**
+ * @brief Initialize gpio button
+ * 
+ * @param config pointer of configuration struct
+ * 
+ * @return
+ *      - ESP_OK on success
+ *      - ESP_ERR_INVALID_ARG   Arguments is NULL.
+ *      - ESP_ERR_NOT_SUPPORTED Arguments out of range.
+ *      - ESP_ERR_INVALID_STATE State is error.
+ */
+esp_err_t button_adc_init(const button_adc_config_t *config);
+
+/**
+ * @brief Deinitialize gpio button
+ * 
+ * @param channel ADC channel
+ * @param button_index Button index on the channel
+ * 
+ * @return
+ *      - ESP_OK on success
+ *      - ESP_ERR_INVALID_ARG   Arguments is invalid.
+ */
+esp_err_t button_adc_deinit(adc1_channel_t channel, int button_index);
+
+/**
+ * @brief Get the adc button level
+ * 
+ * @param button_index It is compressed by ADC channel and button index, use the macro ADC_BUTTON_COMBINE to generate. It will be treated as a uint32_t variable.
+ * 
+ * @return 
+ *      - 0 Not pressed
+ *      - 1 Pressed
+ */
+uint8_t button_adc_get_key_level(void *button_index);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif