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#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
#[path = "../example_common.rs"]
mod example_common;
use example_common::*;
use cortex_m_rt::entry;
use futures::pin_mut;
use nrf52840_hal::gpio;
use embassy::executor::{task, Executor};
use embassy::io::{AsyncBufRead, AsyncBufReadExt, AsyncWrite, AsyncWriteExt};
use embassy::util::Forever;
use embassy_nrf::uarte;
#[task]
async fn run() {
let p = unwrap!(embassy_nrf::pac::Peripherals::take());
let port0 = gpio::p0::Parts::new(p.P0);
let pins = uarte::Pins {
rxd: port0.p0_08.into_floating_input().degrade(),
txd: port0
.p0_06
.into_push_pull_output(gpio::Level::Low)
.degrade(),
cts: None,
rts: None,
};
let u = uarte::Uarte::new(
p.UARTE0,
pins,
uarte::Parity::EXCLUDED,
uarte::Baudrate::BAUD115200,
);
pin_mut!(u);
info!("uarte initialized!");
unwrap!(u.write_all(b"Hello!\r\n").await);
info!("wrote hello in uart!");
// Simple demo, reading 8-char chunks and echoing them back reversed.
loop {
info!("reading...");
let mut buf = [0u8; 8];
unwrap!(u.read_exact(&mut buf).await);
info!("read done, got {:[u8]}", buf);
// Reverse buf
for i in 0..4 {
let tmp = buf[i];
buf[i] = buf[7 - i];
buf[7 - i] = tmp;
}
info!("writing...");
unwrap!(u.write_all(&buf).await);
info!("write done");
}
}
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();
}
}
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