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#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use defmt::*;
use embassy_executor::Spawner;
use embassy_nrf::peripherals::UARTE0;
use embassy_nrf::uarte::UarteRx;
use embassy_nrf::{interrupt, uarte};
use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
use embassy_util::channel::mpmc::Channel;
use {defmt_rtt as _, panic_probe as _};
static CHANNEL: Channel<ThreadModeRawMutex, [u8; 8], 1> = Channel::new();
#[embassy_executor::main]
async fn main(spawner: Spawner) {
let p = embassy_nrf::init(Default::default());
let mut config = uarte::Config::default();
config.parity = uarte::Parity::EXCLUDED;
config.baudrate = uarte::Baudrate::BAUD115200;
let irq = interrupt::take!(UARTE0_UART0);
let uart = uarte::Uarte::new(p.UARTE0, irq, p.P0_08, p.P0_06, config);
let (mut tx, rx) = uart.split();
info!("uarte initialized!");
// Spawn a task responsible purely for reading
unwrap!(spawner.spawn(reader(rx)));
// Message must be in SRAM
{
let mut buf = [0; 23];
buf.copy_from_slice(b"Type 8 chars to echo!\r\n");
unwrap!(tx.write(&buf).await);
info!("wrote hello in uart!");
}
// Continue reading in this main task and write
// back out the buffer we receive from the read
// task.
loop {
let buf = CHANNEL.recv().await;
info!("writing...");
unwrap!(tx.write(&buf).await);
}
}
#[embassy_executor::task]
async fn reader(mut rx: UarteRx<'static, UARTE0>) {
let mut buf = [0; 8];
loop {
info!("reading...");
unwrap!(rx.read(&mut buf).await);
CHANNEL.send(buf).await;
}
}
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