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Begin reworking SPI to add DMA for stm32.

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This commit is contained in:
Bob McWhirter
2021-07-20 13:38:44 -04:00
parent fe66f0f8f8
commit 3f379e06b0
3 changed files with 59 additions and 46 deletions
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28
embassy-stm32/src/spi/mod.rs
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@ -8,7 +8,6 @@ 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 {
@ -73,27 +72,12 @@ pub(crate) mod sealed {
}
}
pub trait Instance: sealed::Instance + RccPeripheral + 'static {}
pub trait SckPin<T: Instance>: sealed::SckPin<T> + 'static {}
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> {}
pub trait Instance: sealed::Instance + RccPeripheral {}
pub trait SckPin<T: Instance>: sealed::SckPin<T> {}
pub trait MosiPin<T: Instance>: sealed::MosiPin<T> {}
pub trait MisoPin<T: Instance>: sealed::MisoPin<T> {}
pub trait TxDmaChannel<T: Instance>: sealed::TxDmaChannel<T> + dma::Channel {}
pub trait RxDmaChannel<T: Instance>: sealed::RxDmaChannel<T> + dma::Channel {}
crate::pac::peripherals!(
(spi, $inst:ident) => {