embedded_hal_async/
delay.rs

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1//! Delays.
2
3/// Delay with up to nanosecond precision.
4pub trait DelayNs {
5    /// Pauses execution for at minimum `ns` nanoseconds. Pause can be longer
6    /// if the implementation requires it due to precision/timing issues.
7    async fn delay_ns(&mut self, ns: u32);
8
9    /// Pauses execution for at minimum `us` microseconds. Pause can be longer
10    /// if the implementation requires it due to precision/timing issues.
11    async fn delay_us(&mut self, mut us: u32) {
12        while us > 4_294_967 {
13            us -= 4_294_967;
14            self.delay_ns(4_294_967_000).await;
15        }
16        self.delay_ns(us * 1_000).await;
17    }
18
19    /// Pauses execution for at minimum `ms` milliseconds. Pause can be longer
20    /// if the implementation requires it due to precision/timing issues.
21    #[inline]
22    async fn delay_ms(&mut self, mut ms: u32) {
23        while ms > 4294 {
24            ms -= 4294;
25            self.delay_ns(4_294_000_000).await;
26        }
27        self.delay_ns(ms * 1_000_000).await;
28    }
29}
30
31impl<T> DelayNs for &mut T
32where
33    T: DelayNs + ?Sized,
34{
35    #[inline]
36    async fn delay_ns(&mut self, ns: u32) {
37        T::delay_ns(self, ns).await;
38    }
39
40    #[inline]
41    async fn delay_us(&mut self, us: u32) {
42        T::delay_us(self, us).await;
43    }
44
45    #[inline]
46    async fn delay_ms(&mut self, ms: u32) {
47        T::delay_ms(self, ms).await;
48    }
49}
embedded_hal_async/delay.rs

embedded_hal_async/
delay.rs
