58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
#include <stdio.h>
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#include "esp_log.h"
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#include "driver/i2c_master.h"
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#include "bh1750.h"
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#include "bh1750_use.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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static const char *TAG = "BH1750_USE";
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static i2c_master_bus_handle_t s_i2c_bus_handle = NULL;
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static bh1750_handle_t s_bh1750_handle = NULL;
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i2c_master_bus_handle_t bh1750_get_i2c_bus_handle(void)
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{
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return s_i2c_bus_handle;
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}
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esp_err_t bh1750_user_init(void)
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{
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if (s_i2c_bus_handle == NULL) {
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i2c_master_bus_config_t bus_config = {
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.clk_source = I2C_CLK_SRC_DEFAULT,
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.i2c_port = I2C_NUM_0,
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.scl_io_num = (gpio_num_t)BH1750_I2C_SCL_IO,
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.sda_io_num = (gpio_num_t)BH1750_I2C_SDA_IO,
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.glitch_ignore_cnt = 7,
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};
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ESP_ERROR_CHECK(i2c_new_master_bus(&bus_config, &s_i2c_bus_handle));
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}
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esp_err_t ret = bh1750_create(s_i2c_bus_handle, BH1750_I2C_ADDRESS_DEFAULT, &s_bh1750_handle);
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if (ret != ESP_OK) {
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ESP_LOGE(TAG, "BH1750 设备创建失败");
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return ret;
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}
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return bh1750_power_on(s_bh1750_handle);
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}
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esp_err_t bh1750_user_read(float *lux)
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{
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if (s_bh1750_handle == NULL) return ESP_ERR_INVALID_STATE;
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bh1750_power_on(s_bh1750_handle);
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bh1750_set_measure_mode(s_bh1750_handle, BH1750_ONETIME_1LX_RES);
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vTaskDelay(pdMS_TO_TICKS(180));
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return bh1750_get_data(s_bh1750_handle, lux);
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}
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void bh1750_user_deinit(void)
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{
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if (s_bh1750_handle) {
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bh1750_delete(s_bh1750_handle);
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s_bh1750_handle = NULL;
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}
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}
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