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