76 lines
2.6 KiB
Rust
76 lines
2.6 KiB
Rust
#![no_std]
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#![no_main]
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#![feature(min_type_alias_impl_trait)]
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#![feature(impl_trait_in_bindings)]
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#![feature(type_alias_impl_trait)]
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#![allow(incomplete_features)]
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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 defmt::panic;
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use embassy::executor::Spawner;
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use embassy::traits::uart::{Read, Write};
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use embassy::util::Steal;
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use embassy_nrf::gpio::NoPin;
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use embassy_nrf::{interrupt, uarte, Peripherals};
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use futures::pin_mut;
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#[embassy::main]
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async fn main(spawner: Spawner) {
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let p = unsafe { Peripherals::steal() };
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let mut config = uarte::Config::default();
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config.parity = uarte::Parity::EXCLUDED;
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config.baudrate = uarte::Baudrate::BAUD115200;
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let irq = interrupt::take!(UARTE0_UART0);
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let uart = unsafe { uarte::Uarte::new(p.UARTE0, irq, p.P0_08, p.P0_06, NoPin, NoPin, config) };
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pin_mut!(uart);
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info!("uarte initialized!");
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// Message must be in SRAM
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let mut buf = [0; 8];
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buf.copy_from_slice(b"Hello!\r\n");
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unwrap!(uart.as_mut().write(&buf).await);
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info!("wrote hello in uart!");
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loop {
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info!("reading...");
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unwrap!(uart.as_mut().read(&mut buf).await);
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info!("writing...");
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unwrap!(uart.as_mut().write(&buf).await);
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/*
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// `receive()` doesn't return until the buffer has been completely filled with
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// incoming data, which in this case is 8 bytes.
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//
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// This example shows how to use `select` to run an uart receive concurrently with a
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// 1 second timer, effectively adding a timeout to the receive operation.
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let recv_fut = uart.read(&mut buf);
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let timer_fut = Timer::after(Duration::from_millis(1000));
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let received_len = match select(recv_fut, timer_fut).await {
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// recv_fut completed first, so we've received `buf_len` bytes.
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Either::Left(_) => buf_len,
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// timer_fut completed first. `select` gives us back the future that didn't complete, which
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// is `recv_fut` in this case, so we can do further stuff with it.
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//
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// The recv_fut would stop the uart read automatically when dropped. However, we want to know how
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// many bytes have been received, so we have to "gracefully stop" it with `.stop()`.
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Either::Right((_, recv_fut)) => recv_fut.stop().await,
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};
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let received = &mut buf[..received_len];
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if !received.is_empty() {
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info!("read done, got {}", received);
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// Echo back received data
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unwrap!(uart.write(received).await);
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}
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*/
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}
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}
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