34 lines
706 B
Rust
34 lines
706 B
Rust
#![no_std]
|
|
#![no_main]
|
|
#![feature(type_alias_impl_trait)]
|
|
|
|
use defmt_rtt as _; // global logger
|
|
use panic_probe as _;
|
|
|
|
use defmt::*;
|
|
|
|
use embassy::executor::Spawner;
|
|
use embassy_stm32::usart::{Config, Uart};
|
|
use embassy_stm32::Peripherals;
|
|
|
|
#[embassy::main]
|
|
async fn main(_spawner: Spawner, p: Peripherals) {
|
|
let mut usart = Uart::new(
|
|
p.USART1,
|
|
p.PB7,
|
|
p.PB6,
|
|
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();
|
|
}
|
|
}
|