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Wire up peripheral DMA channels for SPI.

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This commit is contained in:
Bob McWhirter 2021-07-20 15:44:13 -04:00
parent 3df2aadc39
commit 1a03f00b56
1 changed files with 36 additions and 0 deletions
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36
embassy-stm32/src/spi/mod.rs
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@ -116,3 +116,39 @@ crate::pac::peripheral_pins!(
impl_pin!($inst, $pin, MisoPin, $af);
};
);
macro_rules! impl_dma {
($inst:ident, {dmamux: $dmamux:ident}, $signal:ident, $request:expr) => {
impl<T> sealed::$signal<peripherals::$inst> for T
where
T: crate::dma::MuxChannel<Mux = crate::dma::$dmamux>,
{
fn request(&self) -> dma::Request {
$request
}
}
impl<T> $signal<peripherals::$inst> for T where
T: crate::dma::MuxChannel<Mux = crate::dma::$dmamux>
{
}
};
($inst:ident, {channel: $channel:ident}, $signal:ident, $request:expr) => {
impl sealed::$signal<peripherals::$inst> for peripherals::$channel {
fn request(&self) -> dma::Request {
$request
}
}
impl $signal<peripherals::$inst> for peripherals::$channel {}
};
}
crate::pac::peripheral_dma_channels! {
($peri:ident, spi, $kind:ident, RX, $channel:tt, $request:expr) => {
impl_dma!($peri, $channel, RxDmaChannel, $request);
};
($peri:ident, spi, $kind:ident, TX, $channel:tt, $request:expr) => {
impl_dma!($peri, $channel, TxDmaChannel, $request);
};
}