72 lines
2.6 KiB
Rust
72 lines
2.6 KiB
Rust
#![macro_use]
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macro_rules! pin_trait {
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($signal:ident, $instance:path $(, $mode:path)?) => {
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#[doc = concat!(stringify!($signal), " pin trait")]
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pub trait $signal<T: $instance $(, M: $mode)?>: crate::gpio::Pin {
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#[doc = concat!("Get the AF number needed to use this pin as ", stringify!($signal))]
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fn af_num(&self) -> u8;
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}
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};
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}
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macro_rules! pin_trait_impl {
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(crate::$mod:ident::$trait:ident$(<$mode:ident>)?, $instance:ident, $pin:ident, $af:expr) => {
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impl crate::$mod::$trait<crate::peripherals::$instance $(, crate::$mod::$mode)?> for crate::peripherals::$pin {
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fn af_num(&self) -> u8 {
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$af
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}
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}
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};
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}
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// ====================
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macro_rules! dma_trait {
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($signal:ident, $instance:path$(, $mode:path)?) => {
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#[doc = concat!(stringify!($signal), " DMA request trait")]
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pub trait $signal<T: $instance $(, M: $mode)?>: crate::dma::Channel {
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#[doc = concat!("Get the DMA request number needed to use this channel as", stringify!($signal))]
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/// Note: in some chips, ST calls this the "channel", and calls channels "streams".
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/// `embassy-stm32` always uses the "channel" and "request number" names.
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fn request(&self) -> crate::dma::Request;
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}
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};
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}
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#[allow(unused)]
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macro_rules! dma_trait_impl {
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// DMAMUX
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(crate::$mod:ident::$trait:ident$(<$mode:ident>)?, $instance:ident, {dmamux: $dmamux:ident}, $request:expr) => {
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impl<T> crate::$mod::$trait<crate::peripherals::$instance $(, crate::$mod::$mode)?> for T
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where
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T: crate::dma::Channel + crate::dma::MuxChannel<Mux = crate::dma::$dmamux>,
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{
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fn request(&self) -> crate::dma::Request {
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$request
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}
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}
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};
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// DMAMUX
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(crate::$mod:ident::$trait:ident$(<$mode:ident>)?, $instance:ident, {dma: $dma:ident}, $request:expr) => {
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impl<T> crate::$mod::$trait<crate::peripherals::$instance $(, crate::$mod::$mode)?> for T
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where
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T: crate::dma::Channel,
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{
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fn request(&self) -> crate::dma::Request {
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$request
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}
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}
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};
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// DMA/GPDMA, without DMAMUX
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(crate::$mod:ident::$trait:ident$(<$mode:ident>)?, $instance:ident, {channel: $channel:ident}, $request:expr) => {
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impl crate::$mod::$trait<crate::peripherals::$instance $(, crate::$mod::$mode)?> for crate::peripherals::$channel {
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fn request(&self) -> crate::dma::Request {
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$request
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}
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}
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};
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}
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