Version 1.0.0
Initial version.
This commit is contained in:
commit
ed7f6201c7
1
.gitignore
vendored
Normal file
1
.gitignore
vendored
Normal file
@ -0,0 +1 @@
|
||||
.DS_Store
|
||||
1
CMakeLists.txt
Normal file
1
CMakeLists.txt
Normal file
@ -0,0 +1 @@
|
||||
idf_component_register(SRCS "zh_aht.c" INCLUDE_DIRS "include" REQUIRES driver)
|
||||
73
LICENSE
Normal file
73
LICENSE
Normal file
@ -0,0 +1,73 @@
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "[]" replaced with your own identifying information. (Don't include the brackets!) The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
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.
|
||||
76
README.md
Normal file
76
README.md
Normal file
@ -0,0 +1,76 @@
|
||||
# ESP32 ESP-IDF and ESP8266 RTOS SDK component for AHT20/AHT21 humidity & temperature sensor
|
||||
|
||||
## Tested on
|
||||
|
||||
1. ESP8266 RTOS_SDK v3.4
|
||||
2. ESP32 ESP-IDF v5.2
|
||||
|
||||
## Using
|
||||
|
||||
In an existing project, run the following command to install the component:
|
||||
|
||||
```text
|
||||
cd ../your_project/components
|
||||
git clone https://github.com/aZholtikov/zh_aht.git
|
||||
```
|
||||
|
||||
In the application, add the component:
|
||||
|
||||
```c
|
||||
#include "zh_aht.h"
|
||||
```
|
||||
|
||||
## Example
|
||||
|
||||
Reading the sensor:
|
||||
|
||||
```c
|
||||
#include "zh_aht.h"
|
||||
|
||||
#define I2C_PORT (I2C_NUM_MAX - 1)
|
||||
|
||||
void app_main(void)
|
||||
{
|
||||
esp_log_level_set("zh_aht", ESP_LOG_NONE);
|
||||
#ifdef CONFIG_IDF_TARGET_ESP8266
|
||||
i2c_config_t i2c_config = {
|
||||
.mode = I2C_MODE_MASTER,
|
||||
.sda_io_num = GPIO_NUM_4, // In accordance with used chip.
|
||||
.sda_pullup_en = GPIO_PULLUP_ENABLE,
|
||||
.scl_io_num = GPIO_NUM_5, // In accordance with used chip.
|
||||
.scl_pullup_en = GPIO_PULLUP_ENABLE,
|
||||
};
|
||||
i2c_driver_install(I2C_PORT, i2c_config.mode);
|
||||
i2c_param_config(I2C_PORT, &i2c_config);
|
||||
#else
|
||||
i2c_master_bus_config_t i2c_bus_config = {
|
||||
.clk_source = I2C_CLK_SRC_DEFAULT,
|
||||
.i2c_port = I2C_PORT,
|
||||
.scl_io_num = GPIO_NUM_22, // In accordance with used chip.
|
||||
.sda_io_num = GPIO_NUM_21, // In accordance with used chip.
|
||||
.glitch_ignore_cnt = 7,
|
||||
.flags.enable_internal_pullup = true,
|
||||
};
|
||||
i2c_master_bus_handle_t i2c_bus_handle;
|
||||
i2c_new_master_bus(&i2c_bus_config, &i2c_bus_handle);
|
||||
#endif
|
||||
zh_aht_init_config_t aht_init_config = ZH_AHT_INIT_CONFIG_DEFAULT();
|
||||
#ifdef CONFIG_IDF_TARGET_ESP8266
|
||||
aht_init_config.i2c_port = I2C_PORT;
|
||||
#else
|
||||
aht_init_config.i2c_handle = i2c_bus_handle;
|
||||
#endif
|
||||
zh_aht_init(&aht_init_config);
|
||||
float humidity = 0.0;
|
||||
float temperature = 0.0;
|
||||
for (;;)
|
||||
{
|
||||
zh_aht_read(&humidity, &temperature);
|
||||
printf("Humidity %0.2f\n", humidity);
|
||||
printf("Temperature %0.2f\n", temperature);
|
||||
vTaskDelay(5000 / portTICK_PERIOD_MS);
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
Any [feedback](mailto:github@azholtikov.ru) will be gladly accepted.
|
||||
0
component.mk
Normal file
0
component.mk
Normal file
79
include/zh_aht.h
Normal file
79
include/zh_aht.h
Normal file
@ -0,0 +1,79 @@
|
||||
#pragma once
|
||||
|
||||
#include "esp_err.h"
|
||||
#include "esp_log.h"
|
||||
#ifdef CONFIG_IDF_TARGET_ESP8266
|
||||
#include "driver/i2c.h"
|
||||
#else
|
||||
#include "driver/i2c_master.h"
|
||||
#endif
|
||||
#include "freertos/FreeRTOS.h"
|
||||
#include "freertos/task.h"
|
||||
|
||||
#define ZH_AHT_INIT_CONFIG_DEFAULT() \
|
||||
{ \
|
||||
.i2c_port = 0 \
|
||||
}
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C"
|
||||
{
|
||||
#endif
|
||||
|
||||
typedef struct // Structure for initial initialization of AHT sensor.
|
||||
{
|
||||
bool i2c_port; // I2C port.
|
||||
#ifndef CONFIG_IDF_TARGET_ESP8266
|
||||
i2c_master_bus_handle_t i2c_handle; // Unique I2C bus handle.
|
||||
#endif
|
||||
|
||||
} zh_aht_init_config_t;
|
||||
|
||||
/**
|
||||
* @brief Initialize AHT sensor.
|
||||
*
|
||||
* @param[in] config Pointer to AHT initialized configuration structure. Can point to a temporary variable.
|
||||
*
|
||||
* @attention I2C driver must be initialized first.
|
||||
*
|
||||
* @note Before initialize the sensor recommend initialize zh_aht_init_config_t structure with default values.
|
||||
*
|
||||
* @code zh_aht_init_config_t config = ZH_AHT_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
|
||||
* - ESP_ERR_INVALID_RESPONSE if I2C driver error
|
||||
*/
|
||||
esp_err_t zh_aht_init(const zh_aht_init_config_t *config);
|
||||
|
||||
/**
|
||||
* @brief Read AHT sensor.
|
||||
*
|
||||
* @param[out] humidity Pointer for AHT sensor reading data of humidity.
|
||||
* @param[out] temperature Pointer for AHT sensor reading data of temperature.
|
||||
*
|
||||
* @return
|
||||
* - ESP_OK if read was success
|
||||
* - ESP_ERR_INVALID_ARG if parameter error
|
||||
* - ESP_ERR_NOT_FOUND if sensor is not initialized
|
||||
* - ESP_ERR_INVALID_CRC if check CRC is fail
|
||||
* - ESP_ERR_INVALID_RESPONSE if I2C driver error
|
||||
* - ESP_ERR_TIMEOUT if sensor has not responded
|
||||
*/
|
||||
esp_err_t zh_aht_read(float *humidity, float *temperature);
|
||||
|
||||
/**
|
||||
* @brief Reset AHT sensor.
|
||||
*
|
||||
* @return
|
||||
* - ESP_OK if reset was success
|
||||
* - ESP_ERR_NOT_FOUND if sensor is not initialized
|
||||
* - ESP_ERR_INVALID_RESPONSE if I2C driver error
|
||||
*/
|
||||
esp_err_t zh_aht_reset(void);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
1
version.txt
Normal file
1
version.txt
Normal file
@ -0,0 +1 @@
|
||||
1.0.0
|
||||
226
zh_aht.c
Normal file
226
zh_aht.c
Normal file
@ -0,0 +1,226 @@
|
||||
#include "zh_aht.h"
|
||||
|
||||
#define I2C_DATA_SIZE 7 // Sensor data size.
|
||||
#define MEASUREMENT_TIME 80 // Sensor measurement time.
|
||||
#define RESET_TIME 20 // Sensor reset time.
|
||||
#define I2C_ADDRESS 0x38 // Sensor I2C address.
|
||||
#define I2C_DATA_READ_COMMAND 0xAC, 0x33, 0x00 // Command for read sensor data (temperature and humidity).
|
||||
#define I2C_RESET_COMMAND 0xBA // Command for reset sensor.
|
||||
#define I2C_INIT_COMMAND 0xBE, 0x08, 0x00 // Command for initialize sensor.
|
||||
#define I2C_STATUS_READ_COMMAND 0x71 // Command for read sensor status.
|
||||
|
||||
static zh_aht_init_config_t _init_config = {0};
|
||||
static bool _is_initialized = false;
|
||||
#ifndef CONFIG_IDF_TARGET_ESP8266
|
||||
static i2c_master_dev_handle_t _aht_handle = {0};
|
||||
#endif
|
||||
|
||||
static const char *TAG = "zh_aht";
|
||||
|
||||
static uint8_t _calc_crc(const uint8_t *buf, size_t len);
|
||||
|
||||
esp_err_t zh_aht_init(const zh_aht_init_config_t *config)
|
||||
{
|
||||
ESP_LOGI(TAG, "AHT initialization begin.");
|
||||
if (config == NULL)
|
||||
{
|
||||
ESP_LOGE(TAG, "AHT initialization fail. Invalid argument.");
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
}
|
||||
_init_config = *config;
|
||||
#ifndef CONFIG_IDF_TARGET_ESP8266
|
||||
i2c_device_config_t aht_config = {
|
||||
.dev_addr_length = I2C_ADDR_BIT_LEN_7,
|
||||
.device_address = I2C_ADDRESS,
|
||||
.scl_speed_hz = 100000,
|
||||
};
|
||||
i2c_master_bus_add_device(_init_config.i2c_handle, &aht_config, &_aht_handle);
|
||||
if (i2c_master_probe(_init_config.i2c_handle, I2C_ADDRESS, 1000 / portTICK_PERIOD_MS) != ESP_OK)
|
||||
{
|
||||
ESP_LOGE(TAG, "AHT initialization fail. Sensor not connected or not responded.");
|
||||
return ESP_ERR_NOT_FOUND;
|
||||
}
|
||||
#endif
|
||||
esp_err_t esp_err = ESP_OK;
|
||||
uint8_t command = I2C_STATUS_READ_COMMAND;
|
||||
uint8_t sensor_data = 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, 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);
|
||||
#else
|
||||
esp_err = i2c_master_transmit(_aht_handle, &command, sizeof(command), 1000 / portTICK_PERIOD_MS);
|
||||
#endif
|
||||
if (esp_err != ESP_OK)
|
||||
{
|
||||
ESP_LOGE(TAG, "AHT initialization fail. I2C driver error at line %d.", __LINE__);
|
||||
return ESP_ERR_INVALID_RESPONSE;
|
||||
}
|
||||
#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, I2C_ADDRESS << 1 | I2C_MASTER_READ, true);
|
||||
i2c_master_read_byte(i2c_cmd_handle, &sensor_data, 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(_aht_handle, &sensor_data, sizeof(sensor_data), 1000 / portTICK_PERIOD_MS);
|
||||
#endif
|
||||
if (esp_err != ESP_OK)
|
||||
{
|
||||
ESP_LOGE(TAG, "AHT initialization fail. I2C driver error at line %d.", __LINE__);
|
||||
return ESP_ERR_INVALID_RESPONSE;
|
||||
}
|
||||
if ((sensor_data & 0b00001000) == 0)
|
||||
{
|
||||
uint8_t command[] = {I2C_INIT_COMMAND};
|
||||
#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, I2C_ADDRESS << 1 | I2C_MASTER_WRITE, true);
|
||||
i2c_master_write_byte(i2c_cmd_handle, command[0], true);
|
||||
i2c_master_write_byte(i2c_cmd_handle, command[1], true);
|
||||
i2c_master_write_byte(i2c_cmd_handle, 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(_aht_handle, command, sizeof(command), 1000 / portTICK_PERIOD_MS);
|
||||
#endif
|
||||
if (esp_err != ESP_OK)
|
||||
{
|
||||
ESP_LOGE(TAG, "AHT initialization fail. I2C driver error at line %d.", __LINE__);
|
||||
return ESP_ERR_INVALID_RESPONSE;
|
||||
}
|
||||
}
|
||||
ESP_LOGI(TAG, "AHT initialization success.");
|
||||
_is_initialized = true;
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
esp_err_t zh_aht_read(float *humidity, float *temperature)
|
||||
{
|
||||
ESP_LOGI(TAG, "AHT read begin.");
|
||||
if (humidity == NULL || temperature == NULL)
|
||||
{
|
||||
ESP_LOGE(TAG, "AHT read fail. Invalid argument.");
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
}
|
||||
if (_is_initialized == false)
|
||||
{
|
||||
ESP_LOGE(TAG, "AHT read fail. AHT not initialized.");
|
||||
return ESP_ERR_NOT_FOUND;
|
||||
}
|
||||
esp_err_t esp_err = ESP_OK;
|
||||
uint8_t sensor_data[I2C_DATA_SIZE] = {0};
|
||||
uint8_t command[] = {I2C_DATA_READ_COMMAND};
|
||||
#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, I2C_ADDRESS << 1 | I2C_MASTER_WRITE, true);
|
||||
i2c_master_write_byte(i2c_cmd_handle, command[0], true);
|
||||
i2c_master_write_byte(i2c_cmd_handle, command[1], true);
|
||||
i2c_master_write_byte(i2c_cmd_handle, 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(_aht_handle, command, sizeof(command), 1000 / portTICK_PERIOD_MS);
|
||||
#endif
|
||||
if (esp_err != ESP_OK)
|
||||
{
|
||||
ESP_LOGE(TAG, "AHT initialization fail. I2C driver error at line %d.", __LINE__);
|
||||
return ESP_ERR_INVALID_RESPONSE;
|
||||
}
|
||||
vTaskDelay(MEASUREMENT_TIME / portTICK_PERIOD_MS);
|
||||
#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, I2C_ADDRESS << 1 | I2C_MASTER_READ, true);
|
||||
for (uint8_t i = 0; i < sizeof(sensor_data); ++i)
|
||||
{
|
||||
i2c_master_read_byte(i2c_cmd_handle, &sensor_data[i], i == (sizeof(sensor_data) - 1) ? I2C_MASTER_NACK : I2C_MASTER_ACK);
|
||||
}
|
||||
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(_aht_handle, sensor_data, sizeof(sensor_data), 1000 / portTICK_PERIOD_MS);
|
||||
#endif
|
||||
if (esp_err != ESP_OK)
|
||||
{
|
||||
ESP_LOGE(TAG, "AHT initialization fail. I2C driver error at line %d.", __LINE__);
|
||||
return ESP_ERR_INVALID_RESPONSE;
|
||||
}
|
||||
if ((sensor_data[0] & 0b01000000) != 0)
|
||||
{
|
||||
ESP_LOGE(TAG, "AHT read fail. Timeout exceeded.");
|
||||
return ESP_ERR_TIMEOUT;
|
||||
}
|
||||
if (_calc_crc(sensor_data, I2C_DATA_SIZE - 1) != sensor_data[6])
|
||||
{
|
||||
ESP_LOGE(TAG, "DHT read fail. Invalid CRC.");
|
||||
return ESP_ERR_INVALID_CRC;
|
||||
}
|
||||
*humidity = (((((uint32_t)sensor_data[1]) << 16) | (((uint32_t)sensor_data[2]) << 8) | (((uint32_t)sensor_data[3]) << 0)) >> 4) / 1048576.0 * 100.0;
|
||||
*temperature = (((((uint32_t)sensor_data[3]) << 16) | (((uint32_t)sensor_data[4]) << 8) | (((uint32_t)sensor_data[5]) << 0)) & 0xFFFFF) / 1048576.0 * 200.0 - 50.0;
|
||||
ESP_LOGI(TAG, "AHT read success.");
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
esp_err_t zh_aht_reset(void)
|
||||
{
|
||||
ESP_LOGI(TAG, "AHT reset begin.");
|
||||
if (_is_initialized == false)
|
||||
{
|
||||
ESP_LOGE(TAG, "AHT reset fail. AHT not initialized.");
|
||||
return ESP_ERR_NOT_FOUND;
|
||||
}
|
||||
esp_err_t esp_err = ESP_OK;
|
||||
uint8_t command = I2C_RESET_COMMAND;
|
||||
#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, 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);
|
||||
#else
|
||||
esp_err = i2c_master_transmit(_aht_handle, &command, sizeof(command), 1000 / portTICK_PERIOD_MS);
|
||||
#endif
|
||||
if (esp_err != ESP_OK)
|
||||
{
|
||||
ESP_LOGE(TAG, "AHT initialization fail. I2C driver error at line %d.", __LINE__);
|
||||
return ESP_ERR_INVALID_RESPONSE;
|
||||
}
|
||||
vTaskDelay(RESET_TIME / portTICK_PERIOD_MS);
|
||||
ESP_LOGI(TAG, "AHT reset success.");
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
static uint8_t _calc_crc(const uint8_t *buf, size_t len)
|
||||
{
|
||||
uint8_t crc = 0xFF;
|
||||
for (uint8_t byte = 0; byte < len; byte++)
|
||||
{
|
||||
crc ^= buf[byte];
|
||||
for (uint8_t i = 8; i > 0; --i)
|
||||
{
|
||||
if ((crc & 0x80) != 0)
|
||||
{
|
||||
crc = (crc << 1) ^ 0x31;
|
||||
}
|
||||
else
|
||||
{
|
||||
crc = crc << 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
return crc;
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user