Trait grand_central_m4::prelude::_embedded_hal_spi_FullDuplex[−][src]

pub trait _embedded_hal_spi_FullDuplex<Word> {
    type Error;
    fn read(&mut self) -> Result<Word, Error<Self::Error>>;
    fn send(&mut self, word: Word) -> Result<(), Error<Self::Error>>;
}

Expand description

Full duplex (master mode)

Notes

It’s the task of the user of this interface to manage the slave select lines
Due to how full duplex SPI works each read call must be preceded by a send call.
Some SPIs can work with 8-bit and 16-bit words. You can overload this trait with different Word types to allow operation in both modes.

Associated Types

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type Error

An enumeration of SPI errors

Required methods

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fn read(&mut self) -> Result<Word, Error<Self::Error>>

Reads the word stored in the shift register

NOTE A word must be sent to the slave before attempting to call this method.

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fn send(&mut self, word: Word) -> Result<(), Error<Self::Error>>

Sends a word to the slave

Implementors

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impl<C> FullDuplex<<C as AnyConfig>::Word> for Spi<C> where
    C: ValidConfig,
    <C as AnyConfig>::Pads: Tx,
    <C as AnyConfig>::Pads: Rx,
    <C as AnyConfig>::OpMode: MasterMode,
    <C as AnyConfig>::Word: PrimInt,
    <C as AnyConfig>::Word: AsPrimitive<u32>,
    u32: AsPrimitive<<C as AnyConfig>::Word>,

Implement FullDuplex for short Spi transaction Lengths

[FullDuplex is only implemented when Pads is both Tx and Rx, the OpMode is a MasterMode, and the transaction Length is <= 4 bytes. When the Length is <= 4, the Word is a primitive integer, with a size that depends on the Length (u8, u16 or u32).