Struct evegfx_hal::EVEHALSPIInterface

pub struct EVEHALSPIInterface<SPI, CS> where
    SPI: Transfer<u8>,
    CS: OutputPin,  { /* fields omitted */ }

EVEHALSPIInterface is an implementation of evegfx.Interface that commincates over SPI using the embedded-hal SPI and GPIO (for "chip select") traits.

Implementations

impl<SPI, CS> EVEHALSPIInterface<SPI, CS> where
    SPI: Transfer<u8> + Write<u8>,
    CS: OutputPin, 

pub fn new(spi: SPI, cs: CS) -> Self

Create a new EVE interface in terms of the given SPI bus and CS signal implementations.

The given CS implementation must be a digital output pin which will be set to low to assert chip select, or high to unassert it, reflecting the physical characteristics of the CS pin on EVE IC packages.

Trait Implementations

impl<SPI, CS> Interface for EVEHALSPIInterface<SPI, CS> where
    SPI: Transfer<u8> + Write<u8>,
    CS: OutputPin, 

type Error = EVEHALSPIError<<SPI as Write<u8>>::Error, <SPI as Transfer<u8>>::Error, CS::Error>

fn begin_write(&mut self, addr: u32) -> Result<(), Self::Error>

fn continue_write(&mut self, v: &[u8]) -> Result<(), Self::Error>

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

fn begin_read(&mut self, addr: u32) -> Result<(), Self::Error>

fn continue_read(&mut self, into: &mut [u8]) -> Result<(), Self::Error>

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

fn host_cmd(&mut self, cmd: u8, a0: u8, a1: u8) -> Result<(), Self::Error>

pub fn reset(&mut self) -> Result<(), Self::Error>

pub fn write(&mut self, addr: u32, v: &[u8]) -> Result<(), Self::Error>

pub fn read(&mut self, addr: u32, into: &mut [u8]) -> Result<(), Self::Error>

pub fn build_write_header(&self, addr: u32, into: &mut [u8; 3])

Write the three bytes needed to form a "write memory" header for the address into the given bytes. This is a helper for physical implementations that need to construct a message buffer to transmit to the real chip, e.g. via SPI.

pub fn build_read_header(&self, addr: u32, into: &mut [u8; 4])

Write the four bytes needed to form a "read memory" header for the address into the given bytes. This is a helper for physical implementations that need to construct a message buffer to transmit to the real chip, e.g. via SPI.

pub fn build_host_cmd_msg(&self, cmd: u8, a0: u8, a1: u8, into: &mut [u8; 3])

Write the three bytes needed to form a command message for the command and two arguments given. This is a helper for physical implementations that need to construct a message buffer to transmit to the real chip, e.g. via SPI.