Ben Gamari f4950c4449 examples: Consistently use unwrap! in favor of .unwrap()
Unfortunately errors from `embedded_graphics` and `core` doesn't provide
the necessary instances currently.
2021-08-05 22:39:59 +02:00

38 lines
866 B
Rust

#![no_std]
#![no_main]
#![feature(trait_alias)]
#![feature(type_alias_impl_trait)]
#![allow(incomplete_features)]
#[path = "../example_common.rs"]
mod example_common;
use embassy_stm32::dbgmcu::Dbgmcu;
use embassy_stm32::dma::NoDma;
use embassy_stm32::usart::{Config, Uart};
use embedded_hal::blocking::serial::Write;
use example_common::*;
#[cortex_m_rt::entry]
fn main() -> ! {
info!("Hello World!");
unsafe {
Dbgmcu::enable_all();
}
let p = embassy_stm32::init(Default::default());
let config = Config::default();
let mut usart = Uart::new(p.UART4, p.PA1, p.PA0, NoDma, NoDma, config);
unwrap!(usart.bwrite_all(b"Hello Embassy World!\r\n"));
info!("wrote Hello, starting echo");
let mut buf = [0u8; 1];
loop {
unwrap!(usart.read_blocking(&mut buf));
unwrap!(usart.bwrite_all(&buf));
}
}