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async_util

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This commit is contained in:
Per Lindgren 2020-10-26 17:16:51 +01:00
parent 5df1f59f47
commit 5b1c0dbb0a
3 changed files with 15 additions and 4 deletions
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10
examples/async_systick2.rs
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@ -91,8 +91,10 @@ mod app {
async fn task(mut cx: foo::Context<'static>) {
hprintln!("foo task").ok();
hprintln!("delay long time").ok();
timer_delay(&mut cx.resources.systick, 5000000).await;
hprintln!("prepare two futures").ok();
let d1 = timer_delay(&mut cx.resources.systick, 5000000);
let d2 = timer_delay(&mut cx.resources.systick, 1000000);
hprintln!("foo task resumed").ok();
hprintln!("delay short time").ok();
@ -182,6 +184,7 @@ impl<F: Future + 'static> Task<F> {
use core::cmp::Ordering;
use heapless::binary_heap::{BinaryHeap, Max};
use heapless::consts::U8;
use heapless::Vec;
pub enum State {
Started,
@ -217,7 +220,6 @@ pub struct Systick {
syst: cortex_m::peripheral::SYST,
state: State,
queue: BinaryHeap<Timeout, U8, Max>,
// waker: Option<Waker>,
}
//=============
@ -260,7 +262,7 @@ impl<'a, T: Mutex<T = Systick>> Future for Timer<'a, T> {
fn timer_delay<'a, T: Mutex<T = Systick>>(systick: &'a mut T, t: u32) -> Timer<'a, T> {
hprintln!("timer_delay {}", t);
Timer {
request: Some(t),
request: heapless,
systick,
}
}