embassy/embassy-stm32-examples/src/bin/button.rs

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2021-04-09 23:37:22 +02:00
#![no_std]
#![no_main]
#![feature(trait_alias)]
#![feature(min_type_alias_impl_trait)]
#![feature(impl_trait_in_bindings)]
#![feature(type_alias_impl_trait)]
#[path = "../example_common.rs"]
mod example_common;
use embassy_stm32::gpio::{Input, Level, Output, Pull};
use embedded_hal::digital::v2::{InputPin, OutputPin};
use example_common::*;
use cortex_m_rt::entry;
use stm32f4::stm32f429 as pac;
#[entry]
fn main() -> ! {
info!("Hello World!");
let pp = pac::Peripherals::take().unwrap();
pp.DBGMCU.cr.modify(|_, w| {
w.dbg_sleep().set_bit();
w.dbg_standby().set_bit();
w.dbg_stop().set_bit()
});
pp.RCC.ahb1enr.modify(|_, w| w.dma1en().enabled());
pp.RCC.ahb1enr.modify(|_, w| {
w.gpioaen().enabled();
w.gpioben().enabled();
w.gpiocen().enabled();
w.gpioden().enabled();
w.gpioeen().enabled();
w.gpiofen().enabled();
w
});
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let p = embassy_stm32::init(Default::default());
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let button = Input::new(p.PC13, Pull::Down);
let mut led1 = Output::new(p.PB0, Level::High);
let _led2 = Output::new(p.PB7, Level::High);
let mut led3 = Output::new(p.PB14, Level::High);
loop {
if button.is_high().unwrap() {
info!("high");
led1.set_high().unwrap();
led3.set_low().unwrap();
} else {
info!("low");
led1.set_low().unwrap();
led3.set_high().unwrap();
}
}
}