embassy/examples/nrf52840/src/bin/channel_sender_receiver.rs
2023-01-09 22:30:02 +01:00

51 lines
1.4 KiB
Rust

#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use defmt::unwrap;
use embassy_executor::Spawner;
use embassy_nrf::gpio::{AnyPin, Level, Output, OutputDrive, Pin};
use embassy_sync::blocking_mutex::raw::NoopRawMutex;
use embassy_sync::channel::{Channel, Receiver, Sender};
use embassy_time::{Duration, Timer};
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
enum LedState {
On,
Off,
}
static CHANNEL: StaticCell<Channel<NoopRawMutex, LedState, 1>> = StaticCell::new();
#[embassy_executor::task]
async fn send_task(sender: Sender<'static, NoopRawMutex, LedState, 1>) {
loop {
sender.send(LedState::On).await;
Timer::after(Duration::from_secs(1)).await;
sender.send(LedState::Off).await;
Timer::after(Duration::from_secs(1)).await;
}
}
#[embassy_executor::task]
async fn recv_task(led: AnyPin, receiver: Receiver<'static, NoopRawMutex, LedState, 1>) {
let mut led = Output::new(led, Level::Low, OutputDrive::Standard);
loop {
match receiver.recv().await {
LedState::On => led.set_high(),
LedState::Off => led.set_low(),
}
}
}
#[embassy_executor::main]
async fn main(spawner: Spawner) {
let p = embassy_nrf::init(Default::default());
let channel = CHANNEL.init(Channel::new());
unwrap!(spawner.spawn(send_task(channel.sender())));
unwrap!(spawner.spawn(recv_task(p.P0_13.degrade(), channel.receiver())));
}