uploaded 10 months ago
New i2c_master device for AHT20 humidity and temperature sensor
readme
[](https://components.espressif.com/components/espressif/aht20)
# Component: AHT20
I2C driver and definition of AHT20 humidity and temperature sensor.
Components compatible with AHT30 and AHT21 (AHT21 is deprecated).
See [AHT20 datasheet](http://www.aosong.com/en/products-32.html), [AHT30 datasheet](http://www.aosong.com/en/products-131.html).
## Usage
### Initialization I2C Master Bus
> Note: Note: You need to initialize the I2C bus first.
```c
i2c_master_bus_config_t i2c_bus_config = {
.clk_source = I2C_CLK_SRC_DEFAULT,
.i2c_port = I2C_MASTER_NUM,
.scl_io_num = I2C_MASTER_SCL_IO,
.sda_io_num = I2C_MASTER_SDA_IO,
.glitch_ignore_cnt = 7,
.flags.enable_internal_pullup = true,
};
i2c_new_master_bus(&i2c_bus_config, &i2c_bushandle);
```
### Create AHT20 Sensor
> Note: You need to create the AHT20 Sensor object first.
```c
aht20_dev_handle_t aht20_handle = NULL;
i2c_aht20_config_t aht20_i2c_config = {
.i2c_config.device_address = AHT20_ADDRESS_0,
.i2c_config.scl_speed_hz = I2C_MASTER_FREQ_HZ,
.i2c_timeout = 100,
};
aht20_new_sensor(i2c_bushandle, &aht20_i2c_config, &aht20_handle);
```
### Read data
> The user can periodically call the aht20_read_float API to retrieve real-time data.
```c
float temp, hum;
aht20_read_float(aht20, &temp, &hum);
ESP_LOGI(TAG, "Humidity : %2.2f %%", hum);
ESP_LOGI(TAG, "Temperature : %2.2f degC", temp);
```
Links
- Homepage
-
Repository
371ae357c381ced49b7831a43308456be6196829
- Issues
Maintainer
- oikiou <oikiou@outlook.com>
License: Apache-2.0
To add this component to your project, run:
download archive
idf.py add-dependency "jack-ingithub/aht20^0.1.1"
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