embassy/examples/stm32l0/src/bin/button_exti.rs

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#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use defmt_rtt as _; // global logger
use panic_probe as _;
use defmt::*;
use embassy::executor::Spawner;
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use embassy_stm32::exti::ExtiInput;
use embassy_stm32::gpio::{Input, Pull};
use embassy_stm32::Peripherals;
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fn config() -> embassy_stm32::Config {
let mut config = embassy_stm32::Config::default();
config.rcc.enable_hsi48 = true;
config
}
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#[embassy::main(config = "config()")]
async fn main(_spawner: Spawner, p: Peripherals) {
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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!");
}
}