1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_nrf::Peri;
use embassy_nrf::gpio::{AnyPin, Input, Level, Output, OutputDrive, Pull};
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};
// Declare async tasks
#[embassy_executor::task]
async fn blink(pin: Peri<'static, AnyPin>) {
let mut led = Output::new(pin, Level::Low, OutputDrive::Standard);
loop {
// Timekeeping is globally available, no need to mess with hardware timers.
led.set_high();
Timer::after_millis(150).await;
led.set_low();
Timer::after_millis(150).await;
}
}
// Main is itself an async task as well.
#[embassy_executor::main]
async fn main(spawner: Spawner) {
// Initialize the embassy-nrf HAL.
let p = embassy_nrf::init(Default::default());
// Spawned tasks run in the background, concurrently.
spawner.spawn(blink(p.P0_13.into()).unwrap());
let mut button = Input::new(p.P0_11, Pull::Up);
loop {
// Asynchronously wait for GPIO events, allowing other tasks
// to run, or the core to sleep.
button.wait_for_low().await;
info!("Button pressed!");
button.wait_for_high().await;
info!("Button released!");
}
}
|
