Struct aht20_driver::AHT20

pub struct AHT20<I>
where
    I: Read + Write,
{ /* private fields */ }

An AHT20 sensor on the I2C bus I.

The address of the sensor will be SENSOR_ADDRESS from this package, unless there is some kind of special address translating hardware in use.

Implementations

impl<E, I> AHT20<I>

where I: Read<Error = E> + Write<Error = E>,

pub fn new(i2c: I, address: u8) -> Self

Initializes the AHT20 driver.

This consumes the I2C bus I. Before you can get temperature and humidity measurements, you must call the init method which calibrates the sensor. The address will almost always be SENSOR_ADDRESS from this crate.

pub fn init( &mut self, delay: &mut (impl DelayUs<u16> + DelayMs<u16>) ) -> Result<AHT20Initialized<'_, I>, Error<E>>

Run the AHT20 init and calibration routines.

This must be called before any other methods except check_status. This method will take at least 40ms to return.

         Start (Power on)
                │
                ▼
            Wait 40 ms
                │
                ▼
          Read  status byte    ◄───    Wait 10 ms
                │                           ▲
                ▼                           │
        Status::Calibrated ──► No ──► Command::Initialize (0xBE)
                │
                ▼
               Yes

pub fn destroy(self) -> Self

Destroys this driver and releases the I2C bus I