5ecbe5c918
- Remove unused `MilliSeconds`, `MicroSeconds`, and `NanoSeconds` types - Remove `Bps`, `KiloHertz`, and `MegaHertz` types that were only used for converting to `Hertz` - Replace all instances of `impl Into<Hertz>` with `Hertz` - Add `hz`, `khz`, and `mhz` methods to `Hertz`, as well as free function shortcuts - Remove `U32Ext` extension trait
63 lines
1.5 KiB
Rust
63 lines
1.5 KiB
Rust
#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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use core::fmt::Write;
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use core::str::from_utf8;
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use cortex_m_rt::entry;
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use defmt::*;
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use embassy::executor::Executor;
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use embassy::util::Forever;
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use embassy_stm32::peripherals::{DMA1_CH3, DMA1_CH4, SPI3};
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use embassy_stm32::time::mhz;
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use embassy_stm32::{spi, Config};
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use heapless::String;
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use {defmt_rtt as _, panic_probe as _};
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pub fn config() -> Config {
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let mut config = Config::default();
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config.rcc.sys_ck = Some(mhz(400));
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config.rcc.hclk = Some(mhz(200));
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config.rcc.pll1.q_ck = Some(mhz(100));
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config
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}
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#[embassy::task]
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async fn main_task(mut spi: spi::Spi<'static, SPI3, DMA1_CH3, DMA1_CH4>) {
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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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// transfer will slice the &mut read down to &write's actual length.
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spi.transfer(&mut read, 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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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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let p = embassy_stm32::init(config());
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let spi = spi::Spi::new(
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p.SPI3,
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p.PB3,
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p.PB5,
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p.PB4,
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p.DMA1_CH3,
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p.DMA1_CH4,
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mhz(1),
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spi::Config::default(),
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);
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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(spi)));
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})
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}
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