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stm32/usb: add TODO: implement VBUS detection.

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This commit is contained in:
Dario Nieuwenhuis 2023-06-27 03:56:09 +02:00
parent 80407aa930
commit 5e6e18b310
1 changed files with 48 additions and 47 deletions
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95
embassy-stm32/src/usb/usb.rs
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@ -480,56 +480,57 @@ impl<'d, T: Instance> driver::Bus for Bus<'d, T> {
poll_fn(move |cx| {
BUS_WAKER.register(cx.waker());
if self.inited {
let regs = T::regs();
if IRQ_RESUME.load(Ordering::Acquire) {
IRQ_RESUME.store(false, Ordering::Relaxed);
return Poll::Ready(Event::Resume);
}
if IRQ_RESET.load(Ordering::Acquire) {
IRQ_RESET.store(false, Ordering::Relaxed);
trace!("RESET");
regs.daddr().write(|w| {
w.set_ef(true);
w.set_add(0);
});
regs.epr(0).write(|w| {
w.set_ep_type(EpType::CONTROL);
w.set_stat_rx(Stat::NAK);
w.set_stat_tx(Stat::NAK);
});
for i in 1..EP_COUNT {
regs.epr(i).write(|w| {
w.set_ea(i as _);
w.set_ep_type(self.ep_types[i - 1]);
})
}
for w in &EP_IN_WAKERS {
w.wake()
}
for w in &EP_OUT_WAKERS {
w.wake()
}
return Poll::Ready(Event::Reset);
}
if IRQ_SUSPEND.load(Ordering::Acquire) {
IRQ_SUSPEND.store(false, Ordering::Relaxed);
return Poll::Ready(Event::Suspend);
}
Poll::Pending
} else {
// TODO: implement VBUS detection.
if !self.inited {
self.inited = true;
return Poll::Ready(Event::PowerDetected);
}
let regs = T::regs();
if IRQ_RESUME.load(Ordering::Acquire) {
IRQ_RESUME.store(false, Ordering::Relaxed);
return Poll::Ready(Event::Resume);
}
if IRQ_RESET.load(Ordering::Acquire) {
IRQ_RESET.store(false, Ordering::Relaxed);
trace!("RESET");
regs.daddr().write(|w| {
w.set_ef(true);
w.set_add(0);
});
regs.epr(0).write(|w| {
w.set_ep_type(EpType::CONTROL);
w.set_stat_rx(Stat::NAK);
w.set_stat_tx(Stat::NAK);
});
for i in 1..EP_COUNT {
regs.epr(i).write(|w| {
w.set_ea(i as _);
w.set_ep_type(self.ep_types[i - 1]);
})
}
for w in &EP_IN_WAKERS {
w.wake()
}
for w in &EP_OUT_WAKERS {
w.wake()
}
return Poll::Ready(Event::Reset);
}
if IRQ_SUSPEND.load(Ordering::Acquire) {
IRQ_SUSPEND.store(false, Ordering::Relaxed);
return Poll::Ready(Event::Suspend);
}
Poll::Pending
})
.await
}