embassy/examples/stm32h7/src/bin/pwm.rs
Dario Nieuwenhuis 550da471be stm32: Remove OptionalPin
The idea behind OptionalPin has a few problems:

- you need to impl the signal traits for NoPin which is a bit weird https://github.com/embassy-rs/embassy/blob/master/embassy-stm32/src/dcmi.rs#L413-L416
- you can pass any combination of set/unset pins, which needs checking at runtime  https://github.com/embassy-rs/embassy/blob/master/embassy-stm32/src/dcmi.rs#L130

The replacement is to do multiple `new` constructors for each combination of pins you want to take.
2022-02-10 02:38:10 +01:00

47 lines
1.4 KiB
Rust

#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
#[path = "../example_common.rs"]
mod example_common;
use embassy::executor::Spawner;
use embassy::time::{Duration, Timer};
use embassy_stm32::pwm::{simple_pwm::SimplePwm, Channel};
use embassy_stm32::time::U32Ext;
use embassy_stm32::{Config, Peripherals};
use example_common::*;
pub fn config() -> Config {
let mut config = Config::default();
config.rcc.sys_ck = Some(400.mhz().into());
config.rcc.hclk = Some(400.mhz().into());
config.rcc.pll1.q_ck = Some(100.mhz().into());
config.rcc.pclk1 = Some(100.mhz().into());
config.rcc.pclk2 = Some(100.mhz().into());
config.rcc.pclk3 = Some(100.mhz().into());
config.rcc.pclk4 = Some(100.mhz().into());
config
}
#[embassy::main(config = "config()")]
async fn main(_spawner: Spawner, p: Peripherals) {
info!("Hello World!");
let mut pwm = SimplePwm::new_1ch(p.TIM3, p.PA6, 10000.hz());
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;
}
}