Trait knurling_traits::spi_master::SpiMaster

pub trait SpiMaster {
    fn read_bytes(
        &mut self, 
        send_byte: u8, 
        output: &mut [u8]
    ) -> Result<usize, ()>;
    fn write_bytes(&mut self, bytes: &[u8]) -> Result<usize, ()>;
    fn cycle(&mut self, bytes: &mut [u8]) -> Result<usize, ()>;
}

A trait to define SPI port behavior

Blocking vs. Non-blocking behavior is not defined for this trait.

Required Methods

fn read_bytes(&mut self, send_byte: u8, output: &mut [u8]) -> Result<usize, ()>

Attempt to read up to output.len() bytes. send_byte will be sent to the slave output.len() times. Number of bytes read is returned. If an error is returned, no bytes are assumed to be written

fn write_bytes(&mut self, bytes: &[u8]) -> Result<usize, ()>

Attempt to write all given bytes, discarding all output from the slave. Number of bytes written is returned. If an error is returned, no bytes assumed to be written

fn cycle(&mut self, bytes: &mut [u8]) -> Result<usize, ()>

Attempt to write all given bytes, replacing each byte with the value returned by the slave. Number of bytes written/read is returned. If an error is returned, no bytes are assumed to be written

Implementors