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Merge #1087

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1087: embassy-stm32: Allow SPI with DMA to implement blocking embbeded-hal traits r=Dirbaio a=guillaume-michel

Before this PR, on STM32, SPI with DMA do not implement embedded-hal blocking traits even if it is allowed by the hardware.

This PR fixes this issue.

I could not do the same thing for `embassy_embedded_hal::shared_bus::asynch::SpiDevice` because  I could not figure out how to deal with "non-blocking" mutex in a non async fn. Maybe someone has the answer...

Hope it is still useful as is.

Co-authored-by: Guillaume MICHEL <guillaume@squaremind.io>
This commit is contained in:
bors[bot] 2022-11-30 13:45:26 +00:00 committed by GitHub
commit 645fb66a51
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1 changed files with 6 additions and 6 deletions
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12
embassy-stm32/src/spi/mod.rs
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@ -8,7 +8,7 @@ use embassy_hal_common::{into_ref, PeripheralRef};
pub use embedded_hal_02::spi::{Mode, Phase, Polarity, MODE_0, MODE_1, MODE_2, MODE_3};
use self::sealed::WordSize;
use crate::dma::{slice_ptr_parts, NoDma, Transfer};
use crate::dma::{slice_ptr_parts, Transfer};
use crate::gpio::sealed::{AFType, Pin as _};
use crate::gpio::AnyPin;
use crate::pac::spi::{regs, vals, Spi as Regs};
@ -812,7 +812,7 @@ mod eh02 {
// some marker traits. For details, see https://github.com/rust-embedded/embedded-hal/pull/289
macro_rules! impl_blocking {
($w:ident) => {
impl<'d, T: Instance> embedded_hal_02::blocking::spi::Write<$w> for Spi<'d, T, NoDma, NoDma> {
impl<'d, T: Instance, Tx, Rx> embedded_hal_02::blocking::spi::Write<$w> for Spi<'d, T, Tx, Rx> {
type Error = Error;
fn write(&mut self, words: &[$w]) -> Result<(), Self::Error> {
@ -820,7 +820,7 @@ mod eh02 {
}
}
impl<'d, T: Instance> embedded_hal_02::blocking::spi::Transfer<$w> for Spi<'d, T, NoDma, NoDma> {
impl<'d, T: Instance, Tx, Rx> embedded_hal_02::blocking::spi::Transfer<$w> for Spi<'d, T, Tx, Rx> {
type Error = Error;
fn transfer<'w>(&mut self, words: &'w mut [$w]) -> Result<&'w [$w], Self::Error> {
@ -849,19 +849,19 @@ mod eh1 {
}
}
impl<'d, T: Instance, W: Word> embedded_hal_1::spi::SpiBusRead<W> for Spi<'d, T, NoDma, NoDma> {
impl<'d, T: Instance, W: Word, Tx, Rx> embedded_hal_1::spi::SpiBusRead<W> for Spi<'d, T, Tx, Rx> {
fn read(&mut self, words: &mut [W]) -> Result<(), Self::Error> {
self.blocking_read(words)
}
}
impl<'d, T: Instance, W: Word> embedded_hal_1::spi::SpiBusWrite<W> for Spi<'d, T, NoDma, NoDma> {
impl<'d, T: Instance, W: Word, Tx, Rx> embedded_hal_1::spi::SpiBusWrite<W> for Spi<'d, T, Tx, Rx> {
fn write(&mut self, words: &[W]) -> Result<(), Self::Error> {
self.blocking_write(words)
}
}
impl<'d, T: Instance, W: Word> embedded_hal_1::spi::SpiBus<W> for Spi<'d, T, NoDma, NoDma> {
impl<'d, T: Instance, W: Word, Tx, Rx> embedded_hal_1::spi::SpiBus<W> for Spi<'d, T, Tx, Rx> {
fn transfer(&mut self, read: &mut [W], write: &[W]) -> Result<(), Self::Error> {
self.blocking_transfer(read, write)
}