36 lines
1.0 KiB
Rust
36 lines
1.0 KiB
Rust
#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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use defmt::*;
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use embassy_executor::Spawner;
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use embassy_stm32::dma::NoDma;
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use embassy_stm32::interrupt;
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use embassy_stm32::usart::{BufferedUart, Config, State, Uart};
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use embedded_io::asynch::BufRead;
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use {defmt_rtt as _, panic_probe as _};
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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(Default::default());
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info!("Hello World!");
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let config = Config::default();
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let usart = Uart::new(p.USART3, p.PD9, p.PD8, NoDma, NoDma, config);
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let mut state = State::new();
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let irq = interrupt::take!(USART3);
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let mut tx_buf = [0u8; 32];
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let mut rx_buf = [0u8; 32];
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let mut buf_usart = BufferedUart::new(&mut state, usart, irq, &mut tx_buf, &mut rx_buf);
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loop {
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let buf = buf_usart.fill_buf().await.unwrap();
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info!("Received: {}", buf);
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// Read bytes have to be explicitly consumed, otherwise fill_buf() will return them again
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let n = buf.len();
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buf_usart.consume(n);
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}
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}
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