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nrf/usb: fix control out transfers getting corrupted due to ep0rcvout sticking from earlier.

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This commit is contained in:
Dario Nieuwenhuis 2022-05-12 18:45:10 +02:00
parent 5fd55f9529
commit 0764fad587
1 changed files with 11 additions and 14 deletions
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25
embassy-nrf/src/usb.rs
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@ -525,10 +525,6 @@ unsafe fn read_dma<T: Instance>(i: usize, buf: &mut [u8]) -> Result<usize, Endpo
return Err(EndpointError::BufferOverflow);
}
if i == 0 {
regs.events_ep0datadone.reset();
}
let epout = [
&regs.epout0,
&regs.epout1,
@ -639,7 +635,7 @@ pub struct ControlPipe<'d, T: Instance> {
}
impl<'d, T: Instance> driver::ControlPipe for ControlPipe<'d, T> {
type SetupFuture<'a> = impl Future<Output = Request> + 'a where Self: 'a;
type SetupFuture<'a> = impl Future<Output = [u8;8]> + 'a where Self: 'a;
type DataOutFuture<'a> = impl Future<Output = Result<usize, EndpointError>> + 'a where Self: 'a;
type DataInFuture<'a> = impl Future<Output = Result<(), EndpointError>> + 'a where Self: 'a;
@ -651,11 +647,11 @@ impl<'d, T: Instance> driver::ControlPipe for ControlPipe<'d, T> {
async move {
let regs = T::regs();
// Reset shorts
regs.shorts.write(|w| w);
// Wait for SETUP packet
regs.intenset.write(|w| {
w.ep0setup().set();
w.ep0datadone().set()
});
regs.intenset.write(|w| w.ep0setup().set());
poll_fn(|cx| {
EP0_WAKER.register(cx.waker());
let regs = T::regs();
@ -667,8 +663,6 @@ impl<'d, T: Instance> driver::ControlPipe for ControlPipe<'d, T> {
})
.await;
// Reset shorts
regs.shorts.write(|w| w);
regs.events_ep0setup.reset();
let mut buf = [0; 8];
@ -689,6 +683,9 @@ impl<'d, T: Instance> driver::ControlPipe for ControlPipe<'d, T> {
async move {
let regs = T::regs();
regs.events_ep0datadone.reset();
// This starts a RX on EP0. events_ep0datadone notifies when done.
regs.tasks_ep0rcvout
.write(|w| w.tasks_ep0rcvout().set_bit());
@ -723,13 +720,13 @@ impl<'d, T: Instance> driver::ControlPipe for ControlPipe<'d, T> {
async move {
let regs = T::regs();
regs.events_ep0datadone.reset();
unsafe {
write_dma::<T>(0, buf);
}
regs.shorts
.write(|w| w.ep0datadone_ep0status().bit(last_packet));
// This starts a TX on EP0. events_ep0datadone notifies when done.
unsafe { write_dma::<T>(0, buf) }
regs.intenset.write(|w| {
w.usbreset().set();
w.ep0setup().set();