64 lines
1.7 KiB
Rust
64 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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use defmt::*;
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use embassy_executor::Spawner;
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use embassy_nrf::peripherals::UARTE0;
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use embassy_nrf::uarte::UarteRx;
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use embassy_nrf::{bind_interrupts, uarte};
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use embassy_sync::blocking_mutex::raw::ThreadModeRawMutex;
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use embassy_sync::channel::Channel;
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use {defmt_rtt as _, panic_probe as _};
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static CHANNEL: Channel<ThreadModeRawMutex, [u8; 8], 1> = Channel::new();
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bind_interrupts!(struct Irqs {
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UARTE0_UART0 => uarte::InterruptHandler<UARTE0>;
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});
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#[embassy_executor::main]
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async fn main(spawner: Spawner) {
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let p = embassy_nrf::init(Default::default());
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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 uart = uarte::Uarte::new(p.UARTE0, Irqs, p.P0_08, p.P0_06, config);
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let (mut tx, rx) = uart.split();
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info!("uarte initialized!");
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// Spawn a task responsible purely for reading
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unwrap!(spawner.spawn(reader(rx)));
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// Message must be in SRAM
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{
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let mut buf = [0; 23];
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buf.copy_from_slice(b"Type 8 chars to echo!\r\n");
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unwrap!(tx.write(&buf).await);
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info!("wrote hello in uart!");
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}
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// Continue reading in this main task and write
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// back out the buffer we receive from the read
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// task.
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loop {
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let buf = CHANNEL.recv().await;
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info!("writing...");
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unwrap!(tx.write(&buf).await);
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}
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}
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#[embassy_executor::task]
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async fn reader(mut rx: UarteRx<'static, UARTE0>) {
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let mut buf = [0; 8];
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loop {
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info!("reading...");
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unwrap!(rx.read(&mut buf).await);
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CHANNEL.send(buf).await;
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}
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}
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