alexey.zholtikov/zh_bh1750
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This commit is contained in:
Alexey Zholtikov
2024-06-16 08:48:52 +03:00
parent 236feb1140
commit 92a6e4362a
2 changed files with 83 additions and 70 deletions
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8
include/zh_bh1750.h
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@ -2,11 +2,12 @@
#include "esp_err.h" #include "esp_err.h"
#include "esp_log.h" #include "esp_log.h"
#include "driver/i2c.h" #include "driver/i2c_master.h"
#ifdef CONFIG_IDF_TARGET_ESP8266 // #include "driver/i2c.h"
// #ifdef CONFIG_IDF_TARGET_ESP8266
#include "freertos/FreeRTOS.h" #include "freertos/FreeRTOS.h"
#include "freertos/task.h" #include "freertos/task.h"
#endif // #endif
/** /**
* @brief Default values for zh_bh1750_init_config_t structure for initial initialization of the sensor. * @brief Default values for zh_bh1750_init_config_t structure for initial initialization of the sensor.
@ -51,6 +52,7 @@ extern "C"
ONE_TIME // One time measurement. Sensor is power down after measurement. ONE_TIME // One time measurement. Sensor is power down after measurement.
} work_mode; } work_mode;
bool i2c_port; // I2C port. bool i2c_port; // I2C port.
i2c_master_bus_handle_t i2c_handle;
} zh_bh1750_init_config_t; } zh_bh1750_init_config_t;
/** /**

145
zh_bh1750.c
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@ -21,6 +21,7 @@ static bool _is_first_start = false;
static uint8_t _time = 0; static uint8_t _time = 0;
static uint8_t _sensivity = SENSITIVITY_DEFAULT; static uint8_t _sensivity = SENSITIVITY_DEFAULT;
static bool _is_initialized = false; static bool _is_initialized = false;
static i2c_master_dev_handle_t _bh1750_handle;
static const char *TAG = "zh_bh1750"; static const char *TAG = "zh_bh1750";
@ -33,6 +34,13 @@ esp_err_t zh_bh1750_init(zh_bh1750_init_config_t *config)
return ESP_ERR_INVALID_ARG; return ESP_ERR_INVALID_ARG;
} }
_init_config = *config; _init_config = *config;
i2c_device_config_t bh1750_config = {
.dev_addr_length = I2C_ADDR_BIT_LEN_7,
.device_address = _init_config.i2c_address,
.scl_speed_hz = 100000,
};
ESP_ERROR_CHECK(i2c_master_bus_add_device(_init_config.i2c_handle, &bh1750_config, &_bh1750_handle));
ESP_ERROR_CHECK(i2c_master_probe(_init_config.i2c_handle, _init_config.i2c_address, -1));
switch (_init_config.operation_mode) switch (_init_config.operation_mode)
{ {
case LOW_RESOLUTION:; case LOW_RESOLUTION:;
@ -82,33 +90,36 @@ esp_err_t zh_bh1750_read(float *data)
_is_first_start = true; _is_first_start = true;
} }
} }
i2c_cmd_handle_t i2c_cmd_handle = i2c_cmd_link_create(); ESP_ERROR_CHECK(i2c_master_transmit(_bh1750_handle, &_command, sizeof(_command), 1000 / portTICK_PERIOD_MS));
i2c_master_start(i2c_cmd_handle); // i2c_cmd_handle_t i2c_cmd_handle = i2c_cmd_link_create();
i2c_master_write_byte(i2c_cmd_handle, _init_config.i2c_address << 1 | I2C_MASTER_WRITE, true); // i2c_master_start(i2c_cmd_handle);
i2c_master_write_byte(i2c_cmd_handle, _command, true); // i2c_master_write_byte(i2c_cmd_handle, _init_config.i2c_address << 1 | I2C_MASTER_WRITE, true);
i2c_master_stop(i2c_cmd_handle); // i2c_master_write_byte(i2c_cmd_handle, _command, true);
esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS); // i2c_master_stop(i2c_cmd_handle);
i2c_cmd_link_delete(i2c_cmd_handle); // esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
if (esp_err != ESP_OK) // i2c_cmd_link_delete(i2c_cmd_handle);
{ // if (esp_err != ESP_OK)
ESP_LOGE(TAG, "BH1750 read fail. I2C driver error."); // {
return esp_err; // ESP_LOGE(TAG, "BH1750 read fail. I2C driver error.");
} // return esp_err;
// }
vTaskDelay(((_sensivity / SENSITIVITY_DEFAULT) * _time) / portTICK_PERIOD_MS); vTaskDelay(((_sensivity / SENSITIVITY_DEFAULT) * _time) / portTICK_PERIOD_MS);
READ: READ:
i2c_cmd_handle = i2c_cmd_link_create(); // i2c_cmd_handle = i2c_cmd_link_create();
i2c_master_start(i2c_cmd_handle); // i2c_master_start(i2c_cmd_handle);
i2c_master_write_byte(i2c_cmd_handle, _init_config.i2c_address << 1 | I2C_MASTER_READ, true); // i2c_master_write_byte(i2c_cmd_handle, _init_config.i2c_address << 1 | I2C_MASTER_READ, true);
i2c_master_read_byte(i2c_cmd_handle, &sensor_data_high, I2C_MASTER_ACK); // i2c_master_read_byte(i2c_cmd_handle, &sensor_data_high, I2C_MASTER_ACK);
i2c_master_read_byte(i2c_cmd_handle, &sensor_data_low, I2C_MASTER_NACK); // i2c_master_read_byte(i2c_cmd_handle, &sensor_data_low, I2C_MASTER_NACK);
i2c_master_stop(i2c_cmd_handle); // i2c_master_stop(i2c_cmd_handle);
esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS); // esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(i2c_cmd_handle); // i2c_cmd_link_delete(i2c_cmd_handle);
if (esp_err != ESP_OK) // if (esp_err != ESP_OK)
{ // {
ESP_LOGE(TAG, "BH1750 read fail. I2C driver error."); // ESP_LOGE(TAG, "BH1750 read fail. I2C driver error.");
return esp_err; // return esp_err;
} // }
ESP_ERROR_CHECK(i2c_master_receive(_bh1750_handle, &sensor_data_high, 8, -1));
ESP_ERROR_CHECK(i2c_master_receive(_bh1750_handle, &sensor_data_low, 8, -1));
if (_init_config.operation_mode == HIGH_RESOLUTION_2) if (_init_config.operation_mode == HIGH_RESOLUTION_2)
{ {
*data = (sensor_data_high << 8 | sensor_data_low) * (1 / 1.2 * (69.0 / _sensivity) / 2); *data = (sensor_data_high << 8 | sensor_data_low) * (1 / 1.2 * (69.0 / _sensivity) / 2);
@ -123,47 +134,47 @@ READ:
esp_err_t zh_bh1750_adjust(uint8_t value) esp_err_t zh_bh1750_adjust(uint8_t value)
{ {
ESP_LOGI(TAG, "BH1750 adjust begin."); // ESP_LOGI(TAG, "BH1750 adjust begin.");
if ((value < 31 || value > 254)) // if ((value < 31 || value > 254))
{ // {
ESP_LOGE(TAG, "BH1750 adjust fail. Invalid argument."); // ESP_LOGE(TAG, "BH1750 adjust fail. Invalid argument.");
return ESP_ERR_INVALID_ARG; // return ESP_ERR_INVALID_ARG;
} // }
if (_is_initialized == false) // if (_is_initialized == false)
{ // {
ESP_LOGE(TAG, "BH1750 read fail. BH1750 not initialized."); // ESP_LOGE(TAG, "BH1750 read fail. BH1750 not initialized.");
return ESP_ERR_NOT_FOUND; // return ESP_ERR_NOT_FOUND;
} // }
esp_err_t esp_err = ESP_OK; // esp_err_t esp_err = ESP_OK;
_sensivity = value; // _sensivity = value;
i2c_cmd_handle_t i2c_cmd_handle = i2c_cmd_link_create(); // i2c_cmd_handle_t i2c_cmd_handle = i2c_cmd_link_create();
i2c_master_start(i2c_cmd_handle); // i2c_master_start(i2c_cmd_handle);
i2c_master_write_byte(i2c_cmd_handle, _init_config.i2c_address << 1 | I2C_MASTER_WRITE, true); // i2c_master_write_byte(i2c_cmd_handle, _init_config.i2c_address << 1 | I2C_MASTER_WRITE, true);
i2c_master_write_byte(i2c_cmd_handle, value >> 5 | MEASUREMENT_TIME_HIGH_BIT, true); // i2c_master_write_byte(i2c_cmd_handle, value >> 5 | MEASUREMENT_TIME_HIGH_BIT, true);
i2c_master_stop(i2c_cmd_handle); // i2c_master_stop(i2c_cmd_handle);
esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS); // esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(i2c_cmd_handle); // i2c_cmd_link_delete(i2c_cmd_handle);
if (esp_err != ESP_OK) // if (esp_err != ESP_OK)
{ // {
ESP_LOGE(TAG, "BH1750 adjust fail. I2C driver error."); // ESP_LOGE(TAG, "BH1750 adjust fail. I2C driver error.");
return esp_err; // return esp_err;
} // }
i2c_cmd_handle = i2c_cmd_link_create(); // i2c_cmd_handle = i2c_cmd_link_create();
i2c_master_start(i2c_cmd_handle); // i2c_master_start(i2c_cmd_handle);
i2c_master_write_byte(i2c_cmd_handle, _init_config.i2c_address << 1 | I2C_MASTER_WRITE, true); // i2c_master_write_byte(i2c_cmd_handle, _init_config.i2c_address << 1 | I2C_MASTER_WRITE, true);
i2c_master_write_byte(i2c_cmd_handle, (value & 0b00011111) | MEASUREMENT_TIME_LOW_BIT, true); // i2c_master_write_byte(i2c_cmd_handle, (value & 0b00011111) | MEASUREMENT_TIME_LOW_BIT, true);
i2c_master_stop(i2c_cmd_handle); // i2c_master_stop(i2c_cmd_handle);
esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS); // esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(i2c_cmd_handle); // i2c_cmd_link_delete(i2c_cmd_handle);
if (esp_err != ESP_OK) // if (esp_err != ESP_OK)
{ // {
ESP_LOGE(TAG, "BH1750 adjust fail. I2C driver error."); // ESP_LOGE(TAG, "BH1750 adjust fail. I2C driver error.");
return esp_err; // return esp_err;
} // }
if (_init_config.work_mode == CONTINUOUSLY) // if (_init_config.work_mode == CONTINUOUSLY)
{ // {
_is_first_start = false; // _is_first_start = false;
} // }
ESP_LOGI(TAG, "BH1750 adjust success."); // ESP_LOGI(TAG, "BH1750 adjust success.");
return ESP_OK; return ESP_OK;
} }