embassy/examples/nrf/src/bin/uart_idle.rs

#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]

#[path = "../example_common.rs"]
mod example_common;
use embassy_traits::uart::ReadUntilIdle;
use example_common::*;

use defmt::panic;
use embassy::executor::Spawner;
use embassy::traits::uart::Write;
use embassy_nrf::gpio::NoPin;
use embassy_nrf::{interrupt, uarte, Peripherals};

#[embassy::main]
async fn main(_spawner: Spawner, p: Peripherals) {
    let mut config = uarte::Config::default();
    config.parity = uarte::Parity::EXCLUDED;
    config.baudrate = uarte::Baudrate::BAUD115200;

    let irq = interrupt::take!(UARTE0_UART0);
    let mut uart = unsafe {
        uarte::UarteWithIdle::new(
            p.UARTE0, p.TIMER0, p.PPI_CH0, p.PPI_CH1, irq, p.P0_08, p.P0_06, NoPin, NoPin, config,
        )
    };

    info!("uarte initialized!");

    // Message must be in SRAM
    let mut buf = [0; 8];
    buf.copy_from_slice(b"Hello!\r\n");

    unwrap!(uart.write(&buf).await);
    info!("wrote hello in uart!");

    loop {
        info!("reading...");
        let n = unwrap!(uart.read_until_idle(&mut buf).await);
        info!("got {} bytes", n);
    }
}