blob: c61b87a389ee431b46a93fb159f6d57e18a13ef8 (
plain)
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
|
#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use defmt::*;
use embassy_executor::executor::Spawner;
use embassy_executor::time::{Duration, Timer};
use embassy_rp::gpio;
use gpio::{Input, Level, Output, Pull};
use {defmt_rtt as _, panic_probe as _};
/// This example shows how async gpio can be used with a RP2040.
///
/// It requires an external signal to be manually triggered on PIN 16. For
/// example, this could be accomplished using an external power source with a
/// button so that it is possible to toggle the signal from low to high.
///
/// This example will begin with turning on the LED on the board and wait for a
/// high signal on PIN 16. Once the high event/signal occurs the program will
/// continue and turn off the LED, and then wait for 2 seconds before completing
/// the loop and starting over again.
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let p = embassy_rp::init(Default::default());
let mut led = Output::new(p.PIN_25, Level::Low);
let mut async_input = Input::new(p.PIN_16, Pull::None);
loop {
info!("wait_for_high. Turn on LED");
led.set_high();
async_input.wait_for_high().await;
info!("done wait_for_high. Turn off LED");
led.set_low();
Timer::after(Duration::from_secs(2)).await;
}
}
|
