embassy/examples/stm32l0/src/bin/button_exti.rs
Dario Nieuwenhuis de016e8456 Remove trait_alias, allow(incomplete_features).
trait_alias seems unused. no idea why it's there.
2021-09-03 17:00:58 +02:00

33 lines
844 B
Rust

#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
#[path = "../example_common.rs"]
mod example_common;
use embassy::executor::Spawner;
use embassy_stm32::exti::ExtiInput;
use embassy_stm32::gpio::{Input, Pull};
use embassy_stm32::{rcc, Peripherals};
use embassy_traits::gpio::{WaitForFallingEdge, WaitForRisingEdge};
use example_common::*;
#[embassy::main]
async fn main(_spawner: Spawner, mut p: Peripherals) {
let mut rcc = rcc::Rcc::new(p.RCC);
// Enables SYSCFG
let _ = rcc.enable_hsi48(&mut p.SYSCFG, p.CRS);
let button = Input::new(p.PB2, Pull::Up);
let mut button = ExtiInput::new(button, p.EXTI2);
info!("Press the USER button...");
loop {
button.wait_for_falling_edge().await;
info!("Pressed!");
button.wait_for_rising_edge().await;
info!("Released!");
}
}