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This commit is contained in:
Bob McWhirter
2021-07-20 09:19:23 -04:00
parent a345dd9e2b
commit fe66f0f8f8
2 changed files with 68 additions and 11 deletions
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29
embassy-stm32/src/spi/mod.rs
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@ -1,13 +1,14 @@
#![macro_use]
#[cfg_attr(spi_v1, path = "v1.rs")]
#[cfg_attr(spi_v2, path = "v2.rs")]
//#[cfg_attr(spi_v1, path = "v1.rs")]
//#[cfg_attr(spi_v2, path = "v2.rs")]
#[cfg_attr(spi_v3, path = "v3.rs")]
mod _version;
use crate::{peripherals, rcc::RccPeripheral};
use crate::{dma, peripherals, rcc::RccPeripheral};
pub use _version::*;
use crate::gpio::Pin;
use core::marker::PhantomData;
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum Error {
@ -62,6 +63,14 @@ pub(crate) mod sealed {
pub trait MisoPin<T: Instance>: Pin {
fn af_num(&self) -> u8;
}
pub trait TxDmaChannel<T: Instance> {
fn request(&self) -> dma::Request;
}
pub trait RxDmaChannel<T: Instance> {
fn request(&self) -> dma::Request;
}
}
pub trait Instance: sealed::Instance + RccPeripheral + 'static {}
@ -72,6 +81,20 @@ pub trait MosiPin<T: Instance>: sealed::MosiPin<T> + 'static {}
pub trait MisoPin<T: Instance>: sealed::MisoPin<T> + 'static {}
pub trait TxDmaChannel<T: Instance>: sealed::TxDmaChannel<T> + 'static {}
pub trait RxDmaChannel<T: Instance>: sealed::RxDmaChannel<T> + 'static {}
pub trait SpiDma {}
pub struct DmaPair<T: Instance, Tx: TxDmaChannel<T>, Rx: RxDmaChannel<T>> {
tx: Tx,
rx: Rx,
_phantom: PhantomData<T>,
}
impl<T: Instance, Tx: TxDmaChannel<T>, Rx: RxDmaChannel<T>> SpiDma for DmaPair<T, Tx, Rx> {}
crate::pac::peripherals!(
(spi, $inst:ident) => {
impl sealed::Instance for peripherals::$inst {