Struct mh_z19c::MhZ19C

pub struct MhZ19C<'a, U, E>where
    U: Read<u8, Error = E> + Write<u8, Error = E>,{ /* private fields */ }

Driver for the MH-Z19C sensor.

Implementations

impl<'a, U, E> MhZ19C<'a, U, E>where U: Read<u8, Error = E> + Write<u8, Error = E>,

pub fn new(uart: U) -> Self

Create a new instance.

• uart: Serial (UART) interface for communication with the sensor.

impl<'a, U, E> MhZ19C<'a, U, E>where U: Read<u8, Error = E> + Write<u8, Error = E>,

pub fn read_co2_ppm(&mut self) -> Result<u16, Error<E>>

Reads and returns the CO₂ concentration in parts-per-million (ppm).

pub fn get_firmware_version(&mut self) -> Result<[u8; 4], Error<E>>

Retrieves the firmware version of the sensor.

pub fn set_self_calibrate(&mut self, enabled: bool) -> Result<(), Error<E>>

Activates or deactivates the sensor’s self-calibration mode.

See the sensor’s data sheet for more information on self-calibration and hand-operated mode.

pub fn into_inner(self) -> U

Returns the owned UART interface.vec!

Note that this might leave the interface with partially written or read bytes on the UART interface if not all MH-Z19C commands have been polled to completion (i.e. the last command call did not return nb::Error::WouldBlock).

pub fn upgrade_to_v5<'b>( &'b mut self ) -> Result<MhZ19CFw5<'a, 'b, U, E>, Error<E>>

Will make the Firmware5Api capabilities available.

If the sensor firmware is not at least of version 5, an error will be returned.

Trait Implementations

impl<'a, U, E> BaseApi<E> for MhZ19C<'a, U, E>where U: Read<u8, Error = E> + Write<u8, Error = E>,

fn read_co2_ppm(&mut self) -> Result<u16, Error<E>>

Reads and returns the CO₂ concentration in parts-per-million (ppm).

fn get_firmware_version(&mut self) -> Result<[u8; 4], Error<E>>

Retrieves the firmware version of the sensor.

fn set_self_calibrate(&mut self, enabled: bool) -> Result<(), Error<E>>

Activates or deactivates the sensor’s self-calibration mode.

impl<'a, U, E: Debug> Debug for MhZ19C<'a, U, E>where U: Read<u8, Error = E> + Write<u8, Error = E> + Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.