embassy/examples/stm32l0/src/bin/usart_dma.rs

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#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::interrupt;
use embassy_stm32::usart::{Config, Uart};
2022-06-12 22:15:44 +02:00
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let p = embassy_stm32::init(Default::default());
let irq = interrupt::take!(USART1);
let mut usart = Uart::new(p.USART1, p.PB7, p.PB6, irq, p.DMA1_CH2, p.DMA1_CH3, Config::default());
usart.write(b"Hello Embassy World!\r\n").await.unwrap();
info!("wrote Hello, starting echo");
let mut buf = [0; 1];
loop {
usart.read(&mut buf[..]).await.unwrap();
usart.write(&buf[..]).await.unwrap();
}
}