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

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

use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::gpio::OutputType;
use embassy_stm32::time::khz;
use embassy_stm32::timer::complementary_pwm::{ComplementaryPwm, ComplementaryPwmPin};
use embassy_stm32::timer::simple_pwm::PwmPin;
use embassy_stm32::timer::Channel;
use embassy_time::{Duration, Timer};
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 ch1 = PwmPin::new_ch1(p.PE9, OutputType::PushPull);
    let ch1n = ComplementaryPwmPin::new_ch1(p.PA7, OutputType::PushPull);
    let mut pwm = ComplementaryPwm::new(
        p.TIM1,
        Some(ch1),
        Some(ch1n),
        None,
        None,
        None,
        None,
        None,
        None,
        khz(10),
    );

    let max = pwm.get_max_duty();
    pwm.set_dead_time(max / 1024);

    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;
    }
}