Struct Dht22 

pub struct Dht22<PIN, D> { /* private fields */ }

Driver for the DHT22 temperature and humidity sensor.

Implementations

impl<PIN, DELAY, E> Dht22<PIN, DELAY>

where PIN: InputPin<Error = E> + OutputPin<Error = E>, DELAY: DelayNs,

pub fn new(pin: PIN, delay: DELAY) -> Self

Creates a new instance of the DHT22 driver.

Arguments

• pin - The GPIO pin connected to the DHT22 data line. Must support both input and output.
• delay - A delay provider implementing the DelayNs trait.

pub fn read(&mut self) -> Result<Reading, DhtError<E>>

Reads a temperature and humidity measurement from the DHT22 sensor.

This method performs the complete DHT22 communication sequence: sending a start signal, waiting for the sensor’s response, reading 5 bytes, validating the checksum, and decoding the result.

Returns

• Ok(Reading) if the read is successful and the checksum is valid.
• Err(DhtError) if a communication or checksum error occurs.