diff options
author | Dario Nieuwenhuis <dirbaio@dirbaio.net> | 2022-04-06 00:00:29 +0200 |
---|---|---|
committer | Dario Nieuwenhuis <dirbaio@dirbaio.net> | 2022-04-06 01:34:08 +0200 |
commit | 27a1b0ea7316be4687e7173a73861d276974d502 (patch) | |
tree | 6edd9fd7c2d69a5ad130dc13ae7c0bbed442e640 /examples/stm32f3/src/bin | |
parent | aee19185b7cf34466f7941784b55e639c925fae4 (diff) | |
download | embassy-27a1b0ea7316be4687e7173a73861d276974d502.zip |
Simpler Channel.
- Allow initializing in a static, without Forever.
- Remove ability to close, since in embedded enviromnents channels usually live forever and don't get closed.
- Remove MPSC restriction, it's MPMC now. Rename "mpsc" to "channel".
- `Sender` and `Receiver` are still available if you want to enforce a piece of code only has send/receive access, but are optional: you can send/receive directly into the Channel if you want.
Diffstat (limited to 'examples/stm32f3/src/bin')
-rw-r--r-- | examples/stm32f3/src/bin/button_events.rs | 59 |
1 files changed, 24 insertions, 35 deletions
diff --git a/examples/stm32f3/src/bin/button_events.rs b/examples/stm32f3/src/bin/button_events.rs index 99aab302..06e8eec1 100644 --- a/examples/stm32f3/src/bin/button_events.rs +++ b/examples/stm32f3/src/bin/button_events.rs @@ -11,11 +11,10 @@ #![feature(type_alias_impl_trait)] use defmt::*; -use embassy::blocking_mutex::raw::NoopRawMutex; -use embassy::channel::mpsc::{self, Channel, Receiver, Sender}; +use embassy::blocking_mutex::raw::ThreadModeRawMutex; +use embassy::channel::channel::Channel; use embassy::executor::Spawner; use embassy::time::{with_timeout, Duration, Timer}; -use embassy::util::Forever; use embassy_stm32::exti::ExtiInput; use embassy_stm32::gpio::{AnyPin, Input, Level, Output, Pin, Pull, Speed}; use embassy_stm32::peripherals::PA0; @@ -51,14 +50,15 @@ impl<'a> Leds<'a> { } } - async fn show(&mut self, queue: &mut Receiver<'static, NoopRawMutex, ButtonEvent, 4>) { + async fn show(&mut self) { self.leds[self.current_led].set_high(); - if let Ok(new_message) = with_timeout(Duration::from_millis(500), queue.recv()).await { + if let Ok(new_message) = with_timeout(Duration::from_millis(500), CHANNEL.recv()).await { self.leds[self.current_led].set_low(); self.process_event(new_message).await; } else { self.leds[self.current_led].set_low(); - if let Ok(new_message) = with_timeout(Duration::from_millis(200), queue.recv()).await { + if let Ok(new_message) = with_timeout(Duration::from_millis(200), CHANNEL.recv()).await + { self.process_event(new_message).await; } } @@ -77,15 +77,18 @@ impl<'a> Leds<'a> { } } - async fn process_event(&mut self, event: Option<ButtonEvent>) { + async fn process_event(&mut self, event: ButtonEvent) { match event { - Some(ButtonEvent::SingleClick) => self.move_next(), - Some(ButtonEvent::DoubleClick) => { + ButtonEvent::SingleClick => { + self.move_next(); + } + ButtonEvent::DoubleClick => { self.change_direction(); - self.move_next() + self.move_next(); + } + ButtonEvent::Hold => { + self.flash().await; } - Some(ButtonEvent::Hold) => self.flash().await, - _ => {} } } } @@ -97,7 +100,7 @@ enum ButtonEvent { Hold, } -static BUTTON_EVENTS_QUEUE: Forever<Channel<NoopRawMutex, ButtonEvent, 4>> = Forever::new(); +static CHANNEL: Channel<ThreadModeRawMutex, ButtonEvent, 4> = Channel::new(); #[embassy::main] async fn main(spawner: Spawner, p: Peripherals) { @@ -116,27 +119,19 @@ async fn main(spawner: Spawner, p: Peripherals) { ]; let leds = Leds::new(leds); - let buttons_queue = BUTTON_EVENTS_QUEUE.put(Channel::new()); - let (sender, receiver) = mpsc::split(buttons_queue); - spawner.spawn(button_waiter(button, sender)).unwrap(); - spawner.spawn(led_blinker(leds, receiver)).unwrap(); + spawner.spawn(button_waiter(button)).unwrap(); + spawner.spawn(led_blinker(leds)).unwrap(); } #[embassy::task] -async fn led_blinker( - mut leds: Leds<'static>, - mut queue: Receiver<'static, NoopRawMutex, ButtonEvent, 4>, -) { +async fn led_blinker(mut leds: Leds<'static>) { loop { - leds.show(&mut queue).await; + leds.show().await; } } #[embassy::task] -async fn button_waiter( - mut button: ExtiInput<'static, PA0>, - queue: Sender<'static, NoopRawMutex, ButtonEvent, 4>, -) { +async fn button_waiter(mut button: ExtiInput<'static, PA0>) { const DOUBLE_CLICK_DELAY: u64 = 250; const HOLD_DELAY: u64 = 1000; @@ -150,9 +145,7 @@ async fn button_waiter( .is_err() { info!("Hold"); - if queue.send(ButtonEvent::Hold).await.is_err() { - break; - } + CHANNEL.send(ButtonEvent::Hold).await; button.wait_for_falling_edge().await; } else if with_timeout( Duration::from_millis(DOUBLE_CLICK_DELAY), @@ -161,15 +154,11 @@ async fn button_waiter( .await .is_err() { - if queue.send(ButtonEvent::SingleClick).await.is_err() { - break; - } info!("Single click"); + CHANNEL.send(ButtonEvent::SingleClick).await; } else { info!("Double click"); - if queue.send(ButtonEvent::DoubleClick).await.is_err() { - break; - } + CHANNEL.send(ButtonEvent::DoubleClick).await; button.wait_for_falling_edge().await; } button.wait_for_rising_edge().await; |