81 lines
2.2 KiB
Rust
81 lines
2.2 KiB
Rust
use super::{Duration, Instant};
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use crate::Timer;
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/// Blocks for at least `duration`.
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pub fn block_for(duration: Duration) {
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let expires_at = Instant::now() + duration;
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while Instant::now() < expires_at {}
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}
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/// Type implementing async delays and blocking `embedded-hal` delays.
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///
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/// The delays are implemented in a "best-effort" way, meaning that the cpu will block for at least
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/// the amount provided, but accuracy can be affected by many factors, including interrupt usage.
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/// Make sure to use a suitable tick rate for your use case. The tick rate is defined by the currently
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/// active driver.
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pub struct Delay;
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impl embedded_hal_1::delay::DelayNs for Delay {
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fn delay_ns(&mut self, ns: u32) {
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block_for(Duration::from_nanos(ns as u64))
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}
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fn delay_us(&mut self, us: u32) {
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block_for(Duration::from_micros(us as u64))
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}
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fn delay_ms(&mut self, ms: u32) {
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block_for(Duration::from_millis(ms as u64))
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}
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}
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impl embedded_hal_async::delay::DelayNs for Delay {
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async fn delay_ns(&mut self, ns: u32) {
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Timer::after_nanos(ns as _).await
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}
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async fn delay_us(&mut self, us: u32) {
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Timer::after_micros(us as _).await
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}
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async fn delay_ms(&mut self, ms: u32) {
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Timer::after_millis(ms as _).await
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}
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}
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impl embedded_hal_02::blocking::delay::DelayMs<u8> for Delay {
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fn delay_ms(&mut self, ms: u8) {
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block_for(Duration::from_millis(ms as u64))
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}
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}
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impl embedded_hal_02::blocking::delay::DelayMs<u16> for Delay {
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fn delay_ms(&mut self, ms: u16) {
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block_for(Duration::from_millis(ms as u64))
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}
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}
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impl embedded_hal_02::blocking::delay::DelayMs<u32> for Delay {
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fn delay_ms(&mut self, ms: u32) {
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block_for(Duration::from_millis(ms as u64))
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}
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}
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impl embedded_hal_02::blocking::delay::DelayUs<u8> for Delay {
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fn delay_us(&mut self, us: u8) {
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block_for(Duration::from_micros(us as u64))
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}
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}
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impl embedded_hal_02::blocking::delay::DelayUs<u16> for Delay {
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fn delay_us(&mut self, us: u16) {
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block_for(Duration::from_micros(us as u64))
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}
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}
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impl embedded_hal_02::blocking::delay::DelayUs<u32> for Delay {
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fn delay_us(&mut self, us: u32) {
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block_for(Duration::from_micros(us as u64))
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}
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}
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