38 lines
1.0 KiB
Rust
38 lines
1.0 KiB
Rust
#![no_std]
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#![no_main]
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use cortex_m_rt::entry;
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use defmt::*;
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use embassy_stm32::usart::{Config, Uart};
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use embassy_stm32::{bind_interrupts, peripherals, usart};
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use {defmt_rtt as _, panic_probe as _};
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bind_interrupts!(struct Irqs {
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USART2 => usart::InterruptHandler<peripherals::USART2>;
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});
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#[entry]
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fn main() -> ! {
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info!("Hello World!");
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let p = embassy_stm32::init(Default::default());
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let config = Config::default();
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let mut usart = Uart::new_blocking(p.USART2, p.PA3, p.PA2, config).unwrap();
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let desired_baudrate = 9600; // Default is 115200 and 9600 is used as example
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match usart.set_baudrate(desired_baudrate) {
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Ok(_) => info!("Baud rate set to {}", desired_baudrate),
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Err(err) => error!("Error setting baudrate to {}: {}", desired_baudrate, err),
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}
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unwrap!(usart.blocking_write(b"Hello Embassy World!\r\n"));
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info!("wrote Hello, starting echo");
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let mut buf = [0u8; 1];
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loop {
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unwrap!(usart.blocking_read(&mut buf));
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unwrap!(usart.blocking_write(&buf));
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}
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}
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