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Support unstable-trait feature for stm32

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This commit is contained in:
Ulf Lilleengen
2022-01-26 22:39:06 +01:00
parent cd36e3f733
commit 4032fc0655
32 changed files with 604 additions and 673 deletions
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210
embassy-stm32/src/spi/mod.rs
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@ -1,11 +1,9 @@
#![macro_use]
use core::future::Future;
use core::marker::PhantomData;
use core::ptr;
use embassy::util::Unborrow;
use embassy_hal_common::unborrow;
use embassy_traits::spi as traits;
use self::sealed::WordSize;
use crate::dma;
@ -17,7 +15,7 @@ use crate::peripherals;
use crate::rcc::RccPeripheral;
use crate::time::Hertz;
pub use embedded_hal::spi::{Mode, Phase, Polarity, MODE_0, MODE_1, MODE_2, MODE_3};
pub use embedded_hal_02::spi::{Mode, Phase, Polarity, MODE_0, MODE_1, MODE_2, MODE_3};
#[cfg_attr(spi_v1, path = "v1.rs")]
#[cfg_attr(spi_f1, path = "v1.rs")]
@ -549,76 +547,168 @@ fn transfer_word<W: Word>(regs: Regs, tx_word: W) -> Result<W, Error> {
return Ok(rx_word);
}
// Note: It is not possible to impl these traits generically in embedded-hal 0.2 due to a conflict with
// some marker traits. For details, see https://github.com/rust-embedded/embedded-hal/pull/289
macro_rules! impl_blocking {
($w:ident) => {
impl<'d, T: Instance> embedded_hal::blocking::spi::Write<$w> for Spi<'d, T, NoDma, NoDma> {
type Error = Error;
mod eh02 {
use super::*;
fn write(&mut self, words: &[$w]) -> Result<(), Self::Error> {
self.blocking_write(words)
// Note: It is not possible to impl these traits generically in embedded-hal 0.2 due to a conflict with
// some marker traits. For details, see https://github.com/rust-embedded/embedded-hal/pull/289
macro_rules! impl_blocking {
($w:ident) => {
impl<'d, T: Instance> embedded_hal_02::blocking::spi::Write<$w>
for Spi<'d, T, NoDma, NoDma>
{
type Error = Error;
fn write(&mut self, words: &[$w]) -> Result<(), Self::Error> {
self.blocking_write(words)
}
}
impl<'d, T: Instance> embedded_hal_02::blocking::spi::Transfer<$w>
for Spi<'d, T, NoDma, NoDma>
{
type Error = Error;
fn transfer<'w>(&mut self, words: &'w mut [$w]) -> Result<&'w [$w], Self::Error> {
self.blocking_transfer_in_place(words)?;
Ok(words)
}
}
};
}
impl_blocking!(u8);
impl_blocking!(u16);
}
#[cfg(feature = "unstable-traits")]
mod eh1 {
use super::*;
use core::future::Future;
impl<'d, T: Instance, Tx, Rx> embedded_hal_1::spi::ErrorType for Spi<'d, T, Tx, Rx> {
type Error = Error;
}
impl embedded_hal_1::spi::Error for Error {
fn kind(&self) -> embedded_hal_1::spi::ErrorKind {
match *self {
Self::Framing => embedded_hal_1::spi::ErrorKind::FrameFormat,
Self::Crc => embedded_hal_1::spi::ErrorKind::Other,
Self::ModeFault => embedded_hal_1::spi::ErrorKind::ModeFault,
Self::Overrun => embedded_hal_1::spi::ErrorKind::Overrun,
}
}
}
impl<'d, T: Instance> embedded_hal::blocking::spi::Transfer<$w>
for Spi<'d, T, NoDma, NoDma>
{
type Error = Error;
impl<'d, T: Instance, Tx: TxDmaChannel<T>, Rx> embedded_hal_async::spi::Write<u8>
for Spi<'d, T, Tx, Rx>
{
type WriteFuture<'a>
where
Self: 'a,
= impl Future<Output = Result<(), Self::Error>> + 'a;
fn transfer<'w>(&mut self, words: &'w mut [$w]) -> Result<&'w [$w], Self::Error> {
self.blocking_transfer_in_place(words)?;
Ok(words)
fn write<'a>(&'a mut self, data: &'a [u8]) -> Self::WriteFuture<'a> {
self.write(data)
}
type WriteTransactionFuture<'a>
where
Self: 'a,
= impl Future<Output = Result<(), Self::Error>> + 'a;
fn write_transaction<'a>(
&'a mut self,
words: &'a [&'a [u8]],
) -> Self::WriteTransactionFuture<'a> {
async move {
for buf in words {
self.write(buf).await?
}
Ok(())
}
}
};
}
impl_blocking!(u8);
impl_blocking!(u16);
impl<'d, T: Instance, Tx, Rx> traits::Spi<u8> for Spi<'d, T, Tx, Rx> {
type Error = Error;
}
impl<'d, T: Instance, Tx: TxDmaChannel<T>, Rx> traits::Write<u8> for Spi<'d, T, Tx, Rx> {
type WriteFuture<'a>
where
Self: 'a,
= impl Future<Output = Result<(), Self::Error>> + 'a;
fn write<'a>(&'a mut self, data: &'a [u8]) -> Self::WriteFuture<'a> {
self.write(data)
}
}
impl<'d, T: Instance, Tx: TxDmaChannel<T>, Rx: RxDmaChannel<T>> traits::Read<u8>
for Spi<'d, T, Tx, Rx>
{
type ReadFuture<'a>
where
Self: 'a,
= impl Future<Output = Result<(), Self::Error>> + 'a;
impl<'d, T: Instance, Tx: TxDmaChannel<T>, Rx: RxDmaChannel<T>>
embedded_hal_async::spi::Read<u8> for Spi<'d, T, Tx, Rx>
{
type ReadFuture<'a>
where
Self: 'a,
= impl Future<Output = Result<(), Self::Error>> + 'a;
fn read<'a>(&'a mut self, data: &'a mut [u8]) -> Self::ReadFuture<'a> {
self.read(data)
fn read<'a>(&'a mut self, data: &'a mut [u8]) -> Self::ReadFuture<'a> {
self.read(data)
}
type ReadTransactionFuture<'a>
where
Self: 'a,
= impl Future<Output = Result<(), Self::Error>> + 'a;
fn read_transaction<'a>(
&'a mut self,
words: &'a mut [&'a mut [u8]],
) -> Self::ReadTransactionFuture<'a> {
async move {
for buf in words {
self.read(buf).await?
}
Ok(())
}
}
}
}
impl<'d, T: Instance, Tx: TxDmaChannel<T>, Rx: RxDmaChannel<T>> traits::FullDuplex<u8>
for Spi<'d, T, Tx, Rx>
{
type WriteReadFuture<'a>
where
Self: 'a,
= impl Future<Output = Result<(), Self::Error>> + 'a;
impl<'d, T: Instance, Tx: TxDmaChannel<T>, Rx: RxDmaChannel<T>>
embedded_hal_async::spi::ReadWrite<u8> for Spi<'d, T, Tx, Rx>
{
type TransferFuture<'a>
where
Self: 'a,
= impl Future<Output = Result<(), Self::Error>> + 'a;
fn read_write<'a>(
&'a mut self,
read: &'a mut [u8],
write: &'a [u8],
) -> Self::WriteReadFuture<'a> {
self.transfer(read, write)
fn transfer<'a>(&'a mut self, rx: &'a mut [u8], tx: &'a [u8]) -> Self::TransferFuture<'a> {
self.transfer(rx, tx)
}
type TransferInPlaceFuture<'a>
where
Self: 'a,
= impl Future<Output = Result<(), Self::Error>> + 'a;
fn transfer_in_place<'a>(
&'a mut self,
words: &'a mut [u8],
) -> Self::TransferInPlaceFuture<'a> {
// TODO: Implement async version
let result = self.blocking_transfer_in_place(words);
async move { result }
}
type TransactionFuture<'a>
where
Self: 'a,
= impl Future<Output = Result<(), Self::Error>> + 'a;
fn transaction<'a>(
&'a mut self,
operations: &'a mut [embedded_hal_async::spi::Operation<'a, u8>],
) -> Self::TransactionFuture<'a> {
use embedded_hal_1::spi::blocking::Operation;
async move {
for o in operations {
match o {
Operation::Read(b) => self.read(b).await?,
Operation::Write(b) => self.write(b).await?,
Operation::Transfer(r, w) => self.transfer(r, w).await?,
Operation::TransferInPlace(b) => self.transfer_in_place(b).await?,
}
}
Ok(())
}
}
}
}