#![macro_use] use core::task::Poll; use atomic_polyfill::{AtomicU8, Ordering}; use embassy::interrupt::{Interrupt, InterruptExt}; use embassy::util::AtomicWaker; use futures::future::poll_fn; use crate::interrupt; use crate::pac::bdma::{regs, vals}; use crate::pac; use crate::pac::dma_channels; use crate::pac::dma_requests; use crate::pac::interrupts; use crate::pac::peripheral_count; use crate::pac::peripherals; use crate::peripherals; use core::future::Future; use crate::dma_traits::{ReadDma, WriteDma}; /* #[allow(unused)] pub(crate) async unsafe fn transfer_m2p( ch: &mut impl Channel, ch_func: u8, src: &[u8], dst: *mut u8, ) { defmt::info!( "m2p {} func {} {}-{}", src.len(), ch_func, ch.num(), ch.dma_ch_num() ); let n = ch.num(); STATE.ch_status[n].store(CH_STATUS_NONE, Ordering::Release); let ch_regs = ch.regs(); let dmamux_regs = ch.dmamux_regs(); let ch_mux_regs = dmamux_regs.ccr(ch.dmamux_ch_num() as _); ch_mux_regs.write(|reg| { // one request? reg.set_nbreq(0); reg.set_dmareq_id(ch_func); }); ch_mux_regs.modify(|reg| { reg.set_ege(true); //reg.set_se(true); //reg.set_soie(true); }); ch_regs.par().write_value(dst as _); ch_regs.mar().write_value(src.as_ptr() as _); ch_regs.ndtr().write_value(regs::Ndtr(src.len() as _)); ch_regs.cr().write(|reg| { reg.set_dir(vals::Dir::FROMMEMORY); reg.set_msize(vals::Size::BITS8); reg.set_minc(vals::Inc::ENABLED); reg.set_pinc(vals::Inc::DISABLED); reg.set_teie(true); reg.set_tcie(true); reg.set_en(true); }); let res = poll_fn(|cx| { defmt::info!("poll"); STATE.ch_wakers[n].register(cx.waker()); match STATE.ch_status[n].load(Ordering::Acquire) { CH_STATUS_NONE => Poll::Pending, x => Poll::Ready(x), } }) .await; defmt::info!("cr {:b}", ch_regs.cr().read().0); ch_regs.cr().modify(|reg| { reg.set_en(false); }); ch_mux_regs.modify(|reg| { reg.set_ege(false); //reg.set_se(true); //reg.set_soie(true); }); // TODO handle error assert!(res == CH_STATUS_COMPLETED); } */ pub(crate) unsafe fn configure_dmamux( dmamux_regs: pac::dmamux::Dmamux, dmamux_ch_num: u8, request: u8, ) { let ch_mux_regs = dmamux_regs.ccr(dmamux_ch_num as _); ch_mux_regs.write(|reg| { // one request? reg.set_nbreq(0); reg.set_dmareq_id(request); }); ch_mux_regs.modify(|reg| { reg.set_ege(true); //reg.set_se(true); //reg.set_soie(true); }); } pub(crate) mod sealed { use super::*; pub trait DmaMux { fn regs() -> pac::dmamux::Dmamux; } pub trait Channel { fn dmamux_regs(&self) -> pac::dmamux::Dmamux; fn dmamux_ch_num(&self) -> u8; } pub trait PeripheralChannel: Channel { fn request(&self) -> u8; } } pub trait DmaMux: sealed::DmaMux {} pub trait Channel: sealed::Channel {} pub trait PeripheralChannel: sealed::Channel {} pub struct P2M; pub struct M2P; #[allow(unused)] macro_rules! impl_dma_channel { ($channel_peri:ident, $dmamux_peri:ident, $channel_num:expr, $dma_peri: ident, $dma_num:expr) => { impl Channel for peripherals::$channel_peri {} impl sealed::Channel for peripherals::$channel_peri { fn dmamux_regs(&self) -> pac::dmamux::Dmamux { crate::pac::$dmamux_peri } fn dmamux_ch_num(&self) -> u8 { ($dma_num * 8) + $channel_num } } }; } macro_rules! impl_dmamux { ($peri:ident) => { impl sealed::DmaMux for peripherals::$peri { fn regs() -> pac::dmamux::Dmamux { pac::$peri } } impl DmaMux for peripherals::$peri {} }; } peripherals! { (bdma, DMA1) => { dma_channels! { ($channel_peri:ident, DMA1, $channel_num:expr) => { impl_dma_channel!($channel_peri, DMAMUX1, $channel_num, DMA1, 0); }; } }; (bdma, DMA2) => { dma_channels! { ($channel_peri:ident, DMA2, $channel_num:expr) => { impl_dma_channel!($channel_peri, DMAMUX1, $channel_num, DMA2, 1); }; } }; (dmamux, DMAMUX1) => { impl_dmamux!(DMAMUX1); }; } #[allow(unused)] macro_rules! impl_usart_dma_requests { ($channel_peri:ident, $dma_peri:ident, $channel_num:expr) => { dma_requests! { // TODO: DRY this up. (usart, $peri:ident, RX, $request:expr) => { impl sealed::PeripheralChannel for peripherals::$channel_peri { fn request(&self) -> u8 { $request } } impl PeripheralChannel for peripherals::$channel_peri { } }; (usart, $peri:ident, TX, $request:expr) => { impl sealed::PeripheralChannel for peripherals::$channel_peri { fn request(&self) -> u8 { $request } } impl PeripheralChannel for peripherals::$channel_peri { } }; (uart, $peri:ident, TX, $request:expr) => { impl sealed::PeripheralChannel for peripherals::$channel_peri { fn request(&self) -> u8 { $request } } impl PeripheralChannel for peripherals::$channel_peri { } }; (uart, $peri:ident, RX, $request:expr) => { impl sealed::PeripheralChannel for peripherals::$channel_peri { fn request(&self) -> u8 { $request } } impl PeripheralChannel for peripherals::$channel_peri { } }; } }; } #[allow(unused)] #[cfg(usart)] use crate::usart; dma_channels! { ($channel_peri:ident, $dma_peri:ident, $channel_num:expr) => { impl_usart_dma_requests!($channel_peri, $dma_peri, $channel_num); }; } /// safety: must be called only once pub(crate) unsafe fn init() {}