67 lines
1.7 KiB
Rust
67 lines
1.7 KiB
Rust
#![no_std]
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#![no_main]
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#![feature(trait_alias)]
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#![feature(type_alias_impl_trait)]
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#[path = "../example_common.rs"]
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mod example_common;
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use example_common::{panic, *};
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use cortex_m::singleton;
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use cortex_m_rt::entry;
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use embassy::executor::{task, Executor};
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use embassy::uart::Uart;
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use embassy::util::Forever;
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use embassy_stm32f4::interrupt;
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use embassy_stm32f4::serial;
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use stm32f4xx_hal::stm32;
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use stm32f4xx_hal::{prelude::*, serial::config};
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#[task]
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async fn run(dp: stm32::Peripherals, cp: cortex_m::Peripherals) {
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// https://gist.github.com/thalesfragoso/a07340c5df6eee3b04c42fdc69ecdcb1
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let gpioa = dp.GPIOA.split();
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let rcc = dp.RCC.constrain();
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let clocks = rcc
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.cfgr
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.use_hse(16.mhz())
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.sysclk(48.mhz())
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.pclk1(24.mhz())
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.freeze();
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let mut serial = unsafe {
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serial::Serial::new(
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gpioa.pa9.into_alternate_af7(),
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gpioa.pa10.into_alternate_af7(),
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interrupt::take!(DMA2_STREAM7),
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interrupt::take!(DMA2_STREAM2),
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interrupt::take!(USART1),
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dp.DMA2,
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dp.USART1,
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config::Parity::ParityNone,
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9600.bps(),
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clocks,
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)
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};
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let buf = singleton!(: [u8; 30] = [0; 30]).unwrap();
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buf[5] = 0x01;
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serial.send(buf).await.unwrap();
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}
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static EXECUTOR: Forever<Executor> = Forever::new();
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#[entry]
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fn main() -> ! {
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let dp = stm32::Peripherals::take().unwrap();
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let cp = cortex_m::peripheral::Peripherals::take().unwrap();
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let executor = EXECUTOR.put(Executor::new(cortex_m::asm::sev));
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executor.spawn(run(dp, cp)).unwrap();
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loop {
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executor.run();
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cortex_m::asm::wfe();
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}
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}
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