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