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Add signal reset()

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This commit is contained in:
Dario Nieuwenhuis 2020-11-08 18:41:22 +01:00
parent def225b982
commit a2735a716c
1 changed files with 28 additions and 25 deletions
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13
embassy/src/util/signal.rs
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@ -26,8 +26,7 @@ impl<T: Send> Signal<T> {
} }
pub fn signal(&self, val: T) { pub fn signal(&self, val: T) {
unsafe { cortex_m::interrupt::free(|_| unsafe {
cortex_m::interrupt::free(|_| {
let state = &mut *self.state.get(); let state = &mut *self.state.get();
match mem::replace(state, State::Signaled(val)) { match mem::replace(state, State::Signaled(val)) {
State::Waiting(waker) => waker.wake(), State::Waiting(waker) => waker.wake(),
@ -35,6 +34,12 @@ impl<T: Send> Signal<T> {
} }
}) })
} }
pub fn reset(&self) {
cortex_m::interrupt::free(|_| unsafe {
let state = &mut *self.state.get();
*state = State::None
})
} }
pub fn wait<'a>(&'a self) -> impl Future<Output = T> + 'a { pub fn wait<'a>(&'a self) -> impl Future<Output = T> + 'a {
@ -50,8 +55,7 @@ impl<'a, T: Send> Future for WaitFuture<'a, T> {
type Output = T; type Output = T;
fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<T> { fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<T> {
unsafe { cortex_m::interrupt::free(|_| unsafe {
cortex_m::interrupt::free(|_| {
let state = &mut *self.signal.state.get(); let state = &mut *self.signal.state.get();
match state { match state {
State::None => { State::None => {
@ -68,4 +72,3 @@ impl<'a, T: Send> Future for WaitFuture<'a, T> {
}) })
} }
} }
}