39 lines
956 B
Rust
39 lines
956 B
Rust
#![no_std]
|
|
#![no_main]
|
|
#![feature(type_alias_impl_trait)]
|
|
|
|
use core::fmt::Write;
|
|
use core::str::from_utf8;
|
|
|
|
use defmt::*;
|
|
use embassy_executor::executor::Spawner;
|
|
use embassy_stm32::spi::{Config, Spi};
|
|
use embassy_stm32::time::Hertz;
|
|
use embassy_stm32::Peripherals;
|
|
use heapless::String;
|
|
use {defmt_rtt as _, panic_probe as _};
|
|
|
|
#[embassy_executor::main]
|
|
async fn main(_spawner: Spawner, p: Peripherals) {
|
|
info!("Hello World!");
|
|
|
|
let mut spi = Spi::new(
|
|
p.SPI1,
|
|
p.PB3,
|
|
p.PB5,
|
|
p.PB4,
|
|
p.DMA1_CH3,
|
|
p.DMA1_CH2,
|
|
Hertz(1_000_000),
|
|
Config::default(),
|
|
);
|
|
|
|
for n in 0u32.. {
|
|
let mut write: String<128> = String::new();
|
|
let mut read = [0; 128];
|
|
core::write!(&mut write, "Hello DMA World {}!\r\n", n).unwrap();
|
|
spi.transfer(&mut read[0..write.len()], write.as_bytes()).await.ok();
|
|
info!("read via spi+dma: {}", from_utf8(&read).unwrap());
|
|
}
|
|
}
|