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

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

use defmt::*;
use embassy::executor::Spawner;
use embassy::time::{Duration, Timer};
use embassy_stm32::pwm::simple_pwm::{PwmPin, SimplePwm};
use embassy_stm32::pwm::Channel;
use embassy_stm32::time::khz;
use embassy_stm32::Peripherals;
use {defmt_rtt as _, panic_probe as _};

#[embassy::main]
async fn main(_spawner: Spawner, p: Peripherals) {
    info!("Hello World!");

    let ch1 = PwmPin::new_ch1(p.PE9);
    let mut pwm = SimplePwm::new(p.TIM1, Some(ch1), None, None, None, khz(10));
    let max = pwm.get_max_duty();
    pwm.enable(Channel::Ch1);

    info!("PWM initialized");
    info!("PWM max duty {}", max);

    loop {
        pwm.set_duty(Channel::Ch1, 0);
        Timer::after(Duration::from_millis(300)).await;
        pwm.set_duty(Channel::Ch1, max / 4);
        Timer::after(Duration::from_millis(300)).await;
        pwm.set_duty(Channel::Ch1, max / 2);
        Timer::after(Duration::from_millis(300)).await;
        pwm.set_duty(Channel::Ch1, max - 1);
        Timer::after(Duration::from_millis(300)).await;
    }
}