embassy/examples/src/bin/gpiote_port.rs
2020-11-08 19:00:08 +01:00

62 lines
1.6 KiB
Rust

#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
#[path = "../example_common.rs"]
mod example_common;
use example_common::*;
use core::mem;
use cortex_m_rt::entry;
use nrf52840_hal::gpio;
use embassy::executor::{task, Executor};
use embassy::util::Forever;
use embassy_nrf::gpiote;
async fn button(g: &gpiote::Gpiote, n: usize, pin: gpio::Pin<gpio::Input<gpio::PullUp>>) {
let ch = g.new_port_input(pin);
loop {
ch.wait(gpiote::PortInputPolarity::Low).await;
info!("Button {:?} pressed!", n);
ch.wait(gpiote::PortInputPolarity::High).await;
info!("Button {:?} released!", n);
}
}
#[task]
async fn run() {
let p = unwrap!(embassy_nrf::pac::Peripherals::take());
let port0 = gpio::p0::Parts::new(p.P0);
let g = gpiote::Gpiote::new(p.GPIOTE);
info!(
"sizeof Signal<()> = {:usize}",
mem::size_of::<embassy::util::Signal<()>>()
);
info!("sizeof gpiote = {:usize}", mem::size_of::<gpiote::Gpiote>());
info!("Starting!");
let button1 = button(&g, 1, port0.p0_11.into_pullup_input().degrade());
let button2 = button(&g, 2, port0.p0_12.into_pullup_input().degrade());
let button3 = button(&g, 3, port0.p0_24.into_pullup_input().degrade());
let button4 = button(&g, 4, port0.p0_25.into_pullup_input().degrade());
futures::join!(button1, button2, button3, button4);
}
static EXECUTOR: Forever<Executor> = Forever::new();
#[entry]
fn main() -> ! {
info!("Hello World!");
let executor = EXECUTOR.put(Executor::new(cortex_m::asm::sev));
unwrap!(executor.spawn(run()));
loop {
executor.run();
cortex_m::asm::wfe();
}
}