99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
/**
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* @file zh_bh1750.h
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*/
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#pragma once
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#include "esp_err.h"
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#include "esp_log.h"
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#include "driver/i2c_master.h"
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#include "freertos/FreeRTOS.h"
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#define ZH_BH1750_INIT_CONFIG_DEFAULT() \
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{ \
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.i2c_frequency = 400000, \
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.i2c_address = 0x23}
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/**
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* @brief Structure for initial initialization of BH1750 sensor.
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*/
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typedef struct
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{
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i2c_master_bus_handle_t i2c_handle; /*!< Unique I2C bus handle. */
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uint8_t i2c_address; /*!< Sensor I2C address. */
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uint32_t i2c_frequency; /*!< Sensor I2C frequency. */
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} zh_bh1750_init_config_t;
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/**
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* @brief BH1750 sensor handle.
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*/
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typedef struct
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{
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bool is_initialized; /*!< Sensor initialization flag. */
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uint8_t sensivity; /*!< Sensor sensivity. */
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i2c_master_dev_handle_t dev_handle; /*!< Unique I2C device handle. */
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} zh_bh1750_handle_t;
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/**
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* @brief Structure for error statistics storage.
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*/
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typedef struct
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{
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uint32_t i2c_driver_error; /*!< Number of i2c driver error. */
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} zh_bh1750_stats_t;
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/**
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* @brief Initialize BH1750 sensor.
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*
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* @param[in] config Pointer to BH1750 initialized configuration structure. Can point to a temporary variable.
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* @param[out] handle Pointer to unique BH1750 handle.
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*
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* @attention I2C driver must be initialized first.
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*
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* @note Before initialize the sensor recommend initialize zh_bh1750_init_config_t structure with default values.
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*
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* @code zh_bh1750_init_config_t config = ZH_BH1750_INIT_CONFIG_DEFAULT() @endcode
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*
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* @return ESP_OK if success or an error code otherwise.
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*/
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esp_err_t zh_bh1750_init(const zh_bh1750_init_config_t *config, zh_bh1750_handle_t *handle);
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/**
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* @brief Deinitialize PCF8574 expander.
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*
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* @param[in] handle Pointer to unique BH1750 handle.
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*
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* @return ESP_OK if success or an error code otherwise.
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*/
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esp_err_t zh_bh1750_deinit(zh_bh1750_handle_t *handle);
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/**
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* @brief Read BH1750 sensor.
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*
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* @param[in] handle Pointer to unique BH1750 handle.
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* @param[out] data Pointer for reading data.
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*
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* @return ESP_OK if success or an error code otherwise.
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*/
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esp_err_t zh_bh1750_read(zh_bh1750_handle_t *handle, float *data);
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/**
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* @brief Get error statistics.
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*
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* @return Pointer to the statistics structure.
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*/
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const zh_bh1750_stats_t *zh_bh1750_get_stats(void);
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/**
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* @brief Reset error statistics.
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*/
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void zh_bh1750_reset_stats(void);
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#ifdef __cplusplus
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}
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#endif |