49 lines
1.6 KiB
Rust
49 lines
1.6 KiB
Rust
use core::future::Future;
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use core::pin::Pin;
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/// Wait for a pin to become high.
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pub trait WaitForHigh {
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type Future<'a>: Future<Output = ()> + 'a;
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/// Wait for a pin to become high.
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///
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/// If the pin is already high, the future completes immediately.
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/// Otherwise, it completes when it becomes high.
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fn wait_for_high<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a>;
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}
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/// Wait for a pin to become low.
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pub trait WaitForLow {
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type Future<'a>: Future<Output = ()> + 'a;
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/// Wait for a pin to become low.
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///
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/// If the pin is already low, the future completes immediately.
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/// Otherwise, it completes when it becomes low.
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fn wait_for_low<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a>;
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}
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/// Wait for a rising edge (transition from low to high)
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pub trait WaitForRisingEdge {
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type Future<'a>: Future<Output = ()> + 'a;
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/// Wait for a rising edge (transition from low to high)
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fn wait_for_rising_edge<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a>;
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}
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/// Wait for a falling edge (transition from high to low)
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pub trait WaitForFallingEdge {
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type Future<'a>: Future<Output = ()> + 'a;
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/// Wait for a falling edge (transition from high to low)
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fn wait_for_falling_edge<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a>;
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}
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/// Wait for any edge (any transition, high to low or low to high)
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pub trait WaitForAnyEdge {
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type Future<'a>: Future<Output = ()> + 'a;
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/// Wait for any edge (any transition, high to low or low to high)
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fn wait_for_any_edge<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a>;
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}
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