alexey.zholtikov/zh_dht
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 2 Wiki Activity

WIP

Browse Source
This commit is contained in:
Alexey Zholtikov
2024-06-22 17:07:14 +03:00
parent 8c3d60d8fd
commit daf75ec9d6
3 changed files with 56 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
README.md
View File

@ -30,9 +30,9 @@ Reading the sensor with 1-wire connection (DHT11, DHT22, AM2302, AM2320):
void app_main(void)
{
esp_log_level_set("zh_dht", ESP_LOG_NONE);
zh_dht_init_config_t zh_dht_init_config = ZH_DHT_INIT_CONFIG_DEFAULT();
zh_dht_init_config.sensor_pin = GPIO_NUM_5;
zh_dht_init(&zh_dht_init_config);
zh_dht_init_config_t dht_init_config = ZH_DHT_INIT_CONFIG_DEFAULT();
dht_init_config.sensor_pin = GPIO_NUM_5;
zh_dht_init(&dht_init_config);
float humidity = 0.0;
float temperature = 0.0;
for (;;)
@ -76,14 +76,14 @@ void app_main(void)
};
i2c_master_bus_handle_t i2c_bus_handle;
i2c_new_master_bus(&i2c_bus_config, &i2c_bus_handle);
zh_dht_init_config_t zh_dht_init_config = ZH_DHT_INIT_CONFIG_DEFAULT();
zh_dht_init_config_t dht_init_config = ZH_DHT_INIT_CONFIG_DEFAULT();
#endif
#ifdef CONFIG_IDF_TARGET_ESP8266
zh_dht_init_config.i2c_port = I2C_PORT;
dht_init_config.i2c_port = I2C_PORT;
#else
zh_dht_init_config.i2c_handle = i2c_bus_handle;
dht_init_config.i2c_handle = i2c_bus_handle;
#endif
zh_dht_init(&zh_dht_init_config);
zh_dht_init(&dht_init_config);
float humidity = 0.0;
float temperature = 0.0;
for (;;)

17
include/zh_dht.h
View File

@ -36,24 +36,33 @@ extern "C"
/**
* @brief Initialize DHT sensor.
*
* @param[in] sensor_type Sensor type.
* @param[in] sensor_pin Sensor connection gpio.
* @param[in] config Pointer to DHT initialized configuration structure. Can point to a temporary variable.
*
* @return Handle of the sensor
* @attention I2C driver must be initialized first (for I2C connection only).
*
* @note Before initialize the sensor recommend initialize zh_dht_init_config_t structure with default values.
*
* @code zh_dht_init_config_t config = ZH_DHT_INIT_CONFIG_DEFAULT() @endcode
*
* @return
* - ESP_OK if initialization was success
* - ESP_ERR_INVALID_ARG if parameter error
* - ESP_ERR_NOT_FOUND if sensor not connected or not responded (for I2C connection only)
*/
esp_err_t zh_dht_init(const zh_dht_init_config_t *config);
/**
* @brief Read DHT sensor.
*
* @param[in] dht_handle Pointer for handle of the sensor.
* @param[out] humidity Pointer for DHT sensor reading data of humidity.
* @param[out] temperature Pointer for DHT sensor reading data of temperature.
*
* @return
* - ESP_OK if read was success
* - ESP_ERR_INVALID_ARG if parameter error
* - ESP_ERR_NOT_FOUND if DHT is not initialized
* - ESP_ERR_INVALID_RESPONSE if the bus is busy
* - ESP_ERR_INVALID_STATE if I2C driver not installed or not in master mode
* - ESP_ERR_TIMEOUT if operation timeout
* - ESP_ERR_INVALID_CRC if check CRC is fail
*/

52
zh_dht.c
View File

@ -82,7 +82,7 @@ esp_err_t zh_dht_read(float *humidity, float *temperature)
}
if (_is_initialized == false)
{
ESP_LOGE(TAG, "DHT read fail. BH1750 not initialized.");
ESP_LOGE(TAG, "DHT read fail. DHT not initialized.");
return ESP_ERR_NOT_FOUND;
}
if (_init_config.sensor_pin != 0xFF)
@ -171,13 +171,27 @@ esp_err_t zh_dht_read(float *humidity, float *temperature)
uint8_t read_command[] = {I2C_DATA_READ_COMMAND};
uint8_t wakeup_command = {0};
#ifdef CONFIG_IDF_TARGET_ESP8266
// i2c_cmd_handle_t i2c_cmd_handle = i2c_cmd_link_create();
// 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, _command, true);
// i2c_master_stop(i2c_cmd_handle);
// 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_handle_t i2c_cmd_handle = i2c_cmd_link_create();
i2c_master_start(i2c_cmd_handle);
i2c_master_write_byte(i2c_cmd_handle, I2C_ADDRESS << 1 | I2C_MASTER_WRITE, true);
i2c_master_write_byte(i2c_cmd_handle, wakeup_command, true);
i2c_master_stop(i2c_cmd_handle);
esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(i2c_cmd_handle);
if (esp_err != ESP_OK)
{
ESP_LOGE(TAG, "DHT read fail. I2C driver error.");
return esp_err;
}
i2c_cmd_handle = i2c_cmd_link_create();
i2c_master_start(i2c_cmd_handle);
i2c_master_write_byte(i2c_cmd_handle, I2C_ADDRESS << 1 | I2C_MASTER_WRITE, true);
i2c_master_write_byte(i2c_cmd_handle, read_command[0], true);
i2c_master_write_byte(i2c_cmd_handle, read_command[1], true);
i2c_master_write_byte(i2c_cmd_handle, read_command[2], true);
i2c_master_stop(i2c_cmd_handle);
esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(i2c_cmd_handle);
#else
esp_err = i2c_master_transmit(_dht_handle, &wakeup_command, sizeof(wakeup_command), 1000 / portTICK_PERIOD_MS);
if (esp_err != ESP_OK)
@ -193,14 +207,20 @@ esp_err_t zh_dht_read(float *humidity, float *temperature)
return esp_err;
}
#ifdef CONFIG_IDF_TARGET_ESP8266
// i2c_cmd_handle = i2c_cmd_link_create();
// i2c_master_start(i2c_cmd_handle);
// 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[0], I2C_MASTER_ACK);
// i2c_master_read_byte(i2c_cmd_handle, &sensor_data[1], I2C_MASTER_NACK);
// i2c_master_stop(i2c_cmd_handle);
// 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_handle = i2c_cmd_link_create();
i2c_master_start(i2c_cmd_handle);
i2c_master_write_byte(i2c_cmd_handle, I2C_ADDRESS << 1 | I2C_MASTER_READ, true);
i2c_master_read_byte(i2c_cmd_handle, &dht_data[0], I2C_MASTER_ACK);
i2c_master_read_byte(i2c_cmd_handle, &dht_data[1], I2C_MASTER_ACK);
i2c_master_read_byte(i2c_cmd_handle, &dht_data[2], I2C_MASTER_ACK);
i2c_master_read_byte(i2c_cmd_handle, &dht_data[3], I2C_MASTER_ACK);
i2c_master_read_byte(i2c_cmd_handle, &dht_data[4], I2C_MASTER_ACK);
i2c_master_read_byte(i2c_cmd_handle, &dht_data[5], I2C_MASTER_ACK);
i2c_master_read_byte(i2c_cmd_handle, &dht_data[6], I2C_MASTER_ACK);
i2c_master_read_byte(i2c_cmd_handle, &dht_data[7], I2C_MASTER_NACK);
i2c_master_stop(i2c_cmd_handle);
esp_err = i2c_master_cmd_begin(_init_config.i2c_port, i2c_cmd_handle, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(i2c_cmd_handle);
#else
esp_err = i2c_master_receive(_dht_handle, dht_data, sizeof(dht_data), 1000 / portTICK_PERIOD_MS);
#endif