embassy/examples/stm32f4/src/bin/button.rs

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

use cortex_m_rt::entry;
use defmt::*;
use defmt_rtt as _; // global logger
use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
use panic_probe as _;

#[entry]
fn main() -> ! {
    info!("Hello World!");

    let p = embassy_stm32::init(Default::default());

    let button = Input::new(p.PC13, Pull::Down);
    let mut led1 = Output::new(p.PB0, Level::High, Speed::Low);
    let _led2 = Output::new(p.PB7, Level::High, Speed::Low);
    let mut led3 = Output::new(p.PB14, Level::High, Speed::Low);

    loop {
        if button.is_high() {
            info!("high");
            led1.set_high();
            led3.set_low();
        } else {
            info!("low");
            led1.set_low();
            led3.set_high();
        }
    }
}