embassy/examples/stm32l4/src/bin/usart_dma.rs
Timo Kröger 4ccac69929 stm32l4: Cleanup examples
* Use `cortex_m_rt::entry` for sync examples
* Use `Dbgmcu::enable_all()` everywhere
2021-07-29 15:54:11 +02:00

43 lines
1.0 KiB
Rust

#![no_std]
#![no_main]
#![feature(trait_alias)]
#![feature(min_type_alias_impl_trait)]
#![feature(impl_trait_in_bindings)]
#![feature(type_alias_impl_trait)]
#![allow(incomplete_features)]
#[path = "../example_common.rs"]
mod example_common;
use core::fmt::Write;
use defmt::panic;
use embassy::executor::Spawner;
use embassy_stm32::dbgmcu::Dbgmcu;
use embassy_stm32::dma::NoDma;
use embassy_stm32::usart::{Config, Uart};
use embassy_stm32::Peripherals;
use embassy_traits::uart::Write as _;
use example_common::*;
use heapless::String;
#[embassy::main]
async fn main(_spawner: Spawner, p: Peripherals) {
info!("Hello World!");
unsafe {
Dbgmcu::enable_all();
}
let config = Config::default();
let mut usart = Uart::new(p.UART4, p.PA1, p.PA0, p.DMA1_CH3, NoDma, config);
for n in 0u32.. {
let mut s: String<128> = String::new();
core::write!(&mut s, "Hello DMA World {}!\r\n", n).unwrap();
info!("Writing...");
usart.write(s.as_bytes()).await.ok();
info!("wrote DMA");
}
}