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Disable PPI trigger during normal read

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Ulf Lilleengen 2021-05-10 20:16:52 +02:00 committed by Dario Nieuwenhuis
parent 687dda106f
commit e9eb3ce6c1
1 changed files with 10 additions and 4 deletions
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14
embassy-nrf/src/uarte.rs
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@ -288,7 +288,7 @@ impl<'d, T: Instance> Write for Uarte<'d, T> {
pub struct UarteWithIdle<'d, U: Instance, T: TimerInstance> { pub struct UarteWithIdle<'d, U: Instance, T: TimerInstance> {
uarte: Uarte<'d, U>, uarte: Uarte<'d, U>,
timer: T, timer: T,
_ppi_ch1: Ppi<'d, AnyConfigurableChannel>, ppi_ch1: Ppi<'d, AnyConfigurableChannel>,
_ppi_ch2: Ppi<'d, AnyConfigurableChannel>, _ppi_ch2: Ppi<'d, AnyConfigurableChannel>,
} }
@ -355,7 +355,7 @@ impl<'d, U: Instance, T: TimerInstance> UarteWithIdle<'d, U, T> {
Self { Self {
uarte, uarte,
timer, timer,
_ppi_ch1: ppi_ch1, ppi_ch1: ppi_ch1,
_ppi_ch2: ppi_ch2, _ppi_ch2: ppi_ch2,
} }
} }
@ -410,11 +410,12 @@ impl<'d, U: Instance, T: TimerInstance> ReadUntilIdle for UarteWithIdle<'d, U, T
.await; .await;
compiler_fence(Ordering::SeqCst); compiler_fence(Ordering::SeqCst);
r.events_rxstarted.reset();
let n = r.rxd.amount.read().amount().bits() as usize; let n = r.rxd.amount.read().amount().bits() as usize;
// Stop timer // Stop timer
rt.tasks_stop.write(|w| unsafe { w.bits(1) }); rt.tasks_stop.write(|w| unsafe { w.bits(1) });
r.events_rxstarted.reset();
drop.defuse(); drop.defuse();
Ok(n) Ok(n)
@ -426,7 +427,12 @@ impl<'d, U: Instance, T: TimerInstance> Read for UarteWithIdle<'d, U, T> {
#[rustfmt::skip] #[rustfmt::skip]
type ReadFuture<'a> where Self: 'a = impl Future<Output = Result<(), Error>> + 'a; type ReadFuture<'a> where Self: 'a = impl Future<Output = Result<(), Error>> + 'a;
fn read<'a>(&'a mut self, rx_buffer: &'a mut [u8]) -> Self::ReadFuture<'a> { fn read<'a>(&'a mut self, rx_buffer: &'a mut [u8]) -> Self::ReadFuture<'a> {
self.uarte.read(rx_buffer) async move {
self.ppi_ch1.disable();
let result = self.uarte.read(rx_buffer).await;
self.ppi_ch1.enable();
result
}
} }
} }