embassy/examples/stm32f0/src/bin/blinky.rs

#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]

use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::gpio::{Level, Output, Speed};
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};

// main is itself an async function.
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
    let p = embassy_stm32::init(Default::default());
    info!("Hello World!");
    //PA5 is the onboard LED on the Nucleo F091RC
    let mut led = Output::new(p.PA5, Level::High, Speed::Low);

    loop {
        info!("high");
        led.set_high();
        Timer::after_millis(300).await;

        info!("low");
        led.set_low();
        Timer::after_millis(300).await;
    }
}