embassy/examples/stm32f3/src/bin/button_exti.rs

#![no_std]
#![no_main]

use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::exti::ExtiInput;
use embassy_stm32::gpio::Pull;
use {defmt_rtt as _, panic_probe as _};

#[embassy_executor::main]
async fn main(_spawner: Spawner) {
    let p = embassy_stm32::init(Default::default());
    info!("Hello World!");

    let mut button = ExtiInput::new(p.PA0, p.EXTI0, Pull::Down);

    info!("Press the USER button...");

    loop {
        button.wait_for_rising_edge().await;
        info!("Pressed!");
        button.wait_for_falling_edge().await;
        info!("Released!");
    }
}