72 lines
1.8 KiB
Markdown
72 lines
1.8 KiB
Markdown
# ESP32 ESP-IDF component for AHT Series Humidity & Temperature Sensor
|
|
|
|
## Features
|
|
|
|
1. Support of AHT10/AHT15/AHT20/AHT21/AHT25/AHT30/AHT40.
|
|
2. Support multiple sensors on one device with [zh_pca9548a](https://github.com/aZholtikov/zh_pca9548a).
|
|
3. CRC8 data integrity verification.
|
|
4. Error statistics tracking.
|
|
|
|
## Note
|
|
|
|
Enable the following settings in menuconfig:
|
|
|
|
```text
|
|
I2C_ISR_IRAM_SAFE
|
|
I2C_MASTER_ISR_HANDLER_IN_IRAM
|
|
```
|
|
|
|
## Using
|
|
|
|
In an existing project, run the following command to install the component:
|
|
|
|
```bash
|
|
cd ../your_project/components
|
|
git clone https://github.com/aZholtikov/zh_aht
|
|
```
|
|
|
|
In the application, add the component:
|
|
|
|
```c
|
|
#include "zh_aht.h"
|
|
```
|
|
|
|
## Example
|
|
|
|
```c
|
|
#include "zh_aht.h"
|
|
|
|
#define I2C_PORT (I2C_NUM_MAX - 1)
|
|
|
|
zh_aht_handle_t *aht_handle = NULL;
|
|
|
|
void app_main(void)
|
|
{
|
|
esp_log_level_set("zh_aht", ESP_LOG_ERROR);
|
|
i2c_master_bus_config_t i2c_bus_config = {
|
|
.clk_source = I2C_CLK_SRC_DEFAULT,
|
|
.i2c_port = I2C_PORT,
|
|
.scl_io_num = GPIO_NUM_22,
|
|
.sda_io_num = GPIO_NUM_21,
|
|
.glitch_ignore_cnt = 7,
|
|
.flags.enable_internal_pullup = true,
|
|
};
|
|
i2c_master_bus_handle_t i2c_bus_handle = NULL;
|
|
i2c_new_master_bus(&i2c_bus_config, &i2c_bus_handle);
|
|
zh_aht_init_config_t config = ZH_AHT_INIT_CONFIG_DEFAULT();
|
|
config.i2c_handle = i2c_bus_handle;
|
|
zh_aht_init(&config, &aht_handle);
|
|
float humidity = 0.0;
|
|
float temperature = 0.0;
|
|
for (;;)
|
|
{
|
|
zh_aht_read(&aht_handle, &humidity, &temperature);
|
|
printf("Humidity: %.2f%%\n", humidity);
|
|
printf("Temperature: %.2f°C\n", temperature);
|
|
const zh_aht_stats_t *stats = zh_aht_get_stats();
|
|
printf("I2C errors: %ld\n", stats->i2c_driver_error);
|
|
vTaskDelay(5000 / portTICK_PERIOD_MS);
|
|
}
|
|
}
|
|
```
|