Struct embedded_spi::wrapper::Wrapper

pub struct Wrapper<Spi, SpiError, OutputPin, InputPin, PinError> { /* fields omitted */ }

Wrapper wraps an Spi and Pin object to support transactions

Methods

impl<Spi, SpiError, Output, Input, PinError> Wrapper<Spi, SpiError, Output, Input, PinError> where
    Spi: Transfer<u8, Error = SpiError> + Write<u8, Error = SpiError>,
    Output: OutputPin<Error = PinError>,
    Input: InputPin<Error = PinError>, 

pub fn new(spi: Spi, cs: Output) -> Self

Create a new wrapper object with the provided SPI and pin

pub fn with_busy(&mut self, busy: Input)

Add a busy input to the wrapper object

pub fn pin_write<P>(&mut self, pin: &mut P, value: bool) -> i32 where
    P: OutputPin<Error = PinError>, 

Write to a Pin instance while wrapping and storing the error internally This returns 0 for success or -1 for errors

pub fn pin_read<P>(&mut self, pin: &mut P) -> i32 where
    P: InputPin<Error = PinError>, 

Write to a Pin instance while wrapping and storing the error internally This returns 0 for low, 1 for high, and -1 for errors

pub fn check_error(&mut self) -> Result<(), Error<SpiError, PinError>>

Check the internal error state of the peripheral This provides a mechanism to retrieve the rust error if an error occurs during an FFI call, and clears the internal error state

impl<Spi, SpiError, Output, Input, PinError> Wrapper<Spi, SpiError, Output, Input, PinError> where
    Spi: Transfer<u8, Error = SpiError> + Write<u8, Error = SpiError>,
    Output: OutputPin<Error = PinError>,
    Input: InputPin<Error = PinError>, 

pub extern "C" fn ffi_spi_write(
    ctx: *mut c_void,
    prefix: *mut u8,
    prefix_len: u16,
    data: *mut u8,
    data_len: u16
) -> isize

C FFI compatible spi_write function for dependency injection

pub extern "C" fn ffi_spi_read(
    ctx: *mut c_void,
    prefix: *mut u8,
    prefix_len: u16,
    data: *mut u8,
    data_len: u16
) -> isize

C FFI compatible spi_read function for dependency injection

Trait Implementations

impl<Spi, SpiError, Output, Input, PinError> Cursed for Wrapper<Spi, SpiError, Output, Input, PinError>

Mark Wrapper as a c u r s e d type to allow C coercion

impl<Spi, SpiError, Output, Input, PinError> Transactional for Wrapper<Spi, SpiError, Output, Input, PinError> where
    Spi: Transfer<u8, Error = SpiError> + Write<u8, Error = SpiError>,
    Output: OutputPin<Error = PinError>,
    Input: InputPin<Error = PinError>, 

type Error = Error<SpiError, PinError>

fn spi_read<'a>(
    &mut self,
    prefix: &[u8],
    data: &'a mut [u8]
) -> Result<(), Self::Error>

Read data from a specified address This consumes the provided input data array and returns a reference to this on success

fn spi_write(&mut self, prefix: &[u8], data: &[u8]) -> Result<(), Self::Error>

Write data to a specified register address

fn spi_exec(
    &mut self,
    transactions: &mut [Transaction]
) -> Result<(), Self::Error>

Execute the provided transactions

fn spi_busy(&mut self) -> Result<PinState, Self::Error>

Check if the peripheral is currently busy This will panic if not busy pin is bound

impl<Spi: Clone, SpiError: Clone, OutputPin: Clone, InputPin: Clone, PinError: Clone> Clone for Wrapper<Spi, SpiError, OutputPin, InputPin, PinError>

fn clone(&self) -> Wrapper<Spi, SpiError, OutputPin, InputPin, PinError>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<Spi: Debug, SpiError: Debug, OutputPin: Debug, InputPin: Debug, PinError: Debug> Debug for Wrapper<Spi, SpiError, OutputPin, InputPin, PinError>

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

Formats the value using the given formatter.

impl<Spi: PartialEq, SpiError: PartialEq, OutputPin: PartialEq, InputPin: PartialEq, PinError: PartialEq> PartialEq<Wrapper<Spi, SpiError, OutputPin, InputPin, PinError>> for Wrapper<Spi, SpiError, OutputPin, InputPin, PinError>

fn eq(
    &self,
    other: &Wrapper<Spi, SpiError, OutputPin, InputPin, PinError>
) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(
    &self,
    other: &Wrapper<Spi, SpiError, OutputPin, InputPin, PinError>
) -> bool

This method tests for !=.

impl<Spi, SpiError, Output, Input, PinError> Transfer<u8> for Wrapper<Spi, SpiError, Output, Input, PinError> where
    Spi: Transfer<u8, Error = SpiError> + Write<u8, Error = SpiError>,
    Output: OutputPin<Error = PinError>,
    Input: InputPin<Error = PinError>, 

type Error = SpiError

Error type

fn transfer<'w>(&mut self, data: &'w mut [u8]) -> Result<&'w [u8], Self::Error>

Sends words to the slave. Returns the words received from the slave

impl<Spi, SpiError, Output, Input, PinError> Write<u8> for Wrapper<Spi, SpiError, Output, Input, PinError> where
    Spi: Transfer<u8, Error = SpiError> + Write<u8, Error = SpiError>,
    Output: OutputPin<Error = PinError>,
    Input: InputPin<Error = PinError>, 

type Error = SpiError

Error type

fn write<'w>(&mut self, data: &[u8]) -> Result<(), Self::Error>

Sends words to the slave, ignoring all the incoming words