From 6494429a20f6d32e9afdd82417392bcfafc73687 Mon Sep 17 00:00:00 2001 From: Enmanuel Parache Date: Wed, 6 Nov 2024 17:02:39 -0400 Subject: stm32/usart: Changing baud rate --- examples/stm32l1/src/bin/usart.rs | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 examples/stm32l1/src/bin/usart.rs (limited to 'examples') diff --git a/examples/stm32l1/src/bin/usart.rs b/examples/stm32l1/src/bin/usart.rs new file mode 100644 index 000000000..dba79b8b4 --- /dev/null +++ b/examples/stm32l1/src/bin/usart.rs @@ -0,0 +1,37 @@ +#![no_std] +#![no_main] + +use cortex_m_rt::entry; +use defmt::*; +use embassy_stm32::usart::{Config, Uart}; +use embassy_stm32::{bind_interrupts, peripherals, usart}; +use {defmt_rtt as _, panic_probe as _}; + +bind_interrupts!(struct Irqs { + USART2 => usart::InterruptHandler; +}); + +#[entry] +fn main() -> ! { + info!("Hello World!"); + + let p = embassy_stm32::init(Default::default()); + + let config = Config::default(); + let mut usart = Uart::new_blocking(p.USART2, p.PA3, p.PA2, config).unwrap(); + let desired_baudrate = 9600; // Default is 115200 and 9600 is used as example + + match usart.set_baudrate(desired_baudrate) { + Ok(_) => info!("Baud rate set to {}", desired_baudrate), + Err(err) => error!("Error setting baudrate to {}: {}", desired_baudrate, err), + } + + unwrap!(usart.blocking_write(b"Hello Embassy World!\r\n")); + info!("wrote Hello, starting echo"); + + let mut buf = [0u8; 1]; + loop { + unwrap!(usart.blocking_read(&mut buf)); + unwrap!(usart.blocking_write(&buf)); + } +} -- cgit