58 lines
1.4 KiB
Rust
58 lines
1.4 KiB
Rust
#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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#[path = "../common.rs"]
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mod common;
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use common::*;
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use defmt::assert_eq;
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use embassy_executor::Spawner;
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use embassy_futures::join::join;
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use embassy_stm32::usart::{Config, Uart};
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#[embassy_executor::main]
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async fn main(_spawner: Spawner) {
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let p = embassy_stm32::init(config());
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info!("Hello World!");
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// Arduino pins D0 and D1
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// They're connected together with a 1K resistor.
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let usart = peri!(p, UART);
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let rx = peri!(p, UART_RX);
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let tx = peri!(p, UART_TX);
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let rx_dma = peri!(p, UART_RX_DMA);
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let tx_dma = peri!(p, UART_TX_DMA);
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let irq = irqs!(UART);
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let config = Config::default();
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let usart = Uart::new(usart, rx, tx, irq, tx_dma, rx_dma, config).unwrap();
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const LEN: usize = 128;
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let mut tx_buf = [0; LEN];
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let mut rx_buf = [0; LEN];
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let (mut tx, mut rx) = usart.split();
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for n in 0..42 {
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for i in 0..LEN {
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tx_buf[i] = (i ^ n) as u8;
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}
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let tx_fut = async {
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tx.write(&tx_buf).await.unwrap();
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};
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let rx_fut = async {
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rx.read(&mut rx_buf).await.unwrap();
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};
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// note: rx needs to be polled first, to workaround this bug:
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// https://github.com/embassy-rs/embassy/issues/1426
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join(rx_fut, tx_fut).await;
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assert_eq!(tx_buf, rx_buf);
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}
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info!("Test OK");
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cortex_m::asm::bkpt();
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}
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