86 lines
2 KiB
Rust
86 lines
2 KiB
Rust
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#![no_std]
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#![no_main]
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#![feature(trait_alias)]
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#![feature(min_type_alias_impl_trait)]
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#![feature(impl_trait_in_bindings)]
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#![feature(type_alias_impl_trait)]
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#![allow(incomplete_features)]
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#[path = "../example_common.rs"]
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mod example_common;
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use core::fmt::Write;
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use cortex_m_rt::entry;
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use embassy::executor::Executor;
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use embassy::time::Clock;
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use embassy::util::Forever;
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use example_common::*;
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use embassy_traits::spi::FullDuplex;
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use heapless::String;
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use embassy_stm32::spi::{Spi, Config};
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use embassy_stm32::pac;
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use embassy_stm32::time::Hertz;
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use core::str::from_utf8;
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#[embassy::task]
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async fn main_task() {
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let p = embassy_stm32::init(Default::default());
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let mut spi = Spi::new(
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p.SPI1,
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p.PB3,
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p.PA7,
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p.PA6,
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p.DMA2_CH3,
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p.DMA2_CH2,
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Hertz(1_000_000),
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Config::default(),
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);
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for n in 0u32.. {
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let mut write: String<128> = String::new();
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let mut read = [0;128];
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core::write!(&mut write, "Hello DMA World {}!\r\n", n).unwrap();
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spi.read_write(&mut read[0..write.len()], write.as_bytes()).await.ok();
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info!("read via spi+dma: {}", from_utf8(&read).unwrap());
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}
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}
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struct ZeroClock;
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impl Clock for ZeroClock {
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fn now(&self) -> u64 {
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0
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}
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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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info!("Hello World!");
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unsafe {
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pac::DBGMCU.cr().modify(|w| {
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w.set_dbg_sleep(true);
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w.set_dbg_standby(true);
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w.set_dbg_stop(true);
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});
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pac::RCC.ahb1enr().modify(|w| {
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w.set_gpioaen(true);
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w.set_gpioben(true);
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w.set_gpiocen(true);
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w.set_gpioden(true);
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w.set_gpioeen(true);
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w.set_gpiofen(true);
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});
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}
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unsafe { embassy::time::set_clock(&ZeroClock) };
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let executor = EXECUTOR.put(Executor::new());
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executor.run(|spawner| {
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unwrap!(spawner.spawn(main_task()));
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})
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}
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