embassy/examples/stm32f4/src/bin/spi.rs

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#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use defmt_rtt as _; // global logger
use panic_probe as _;
use cortex_m_rt::entry;
use defmt::*;
use embassy_stm32::dma::NoDma;
use embassy_stm32::gpio::{Level, Output, Speed};
use embassy_stm32::spi::{Config, Spi};
use embassy_stm32::time::Hertz;
#[entry]
fn main() -> ! {
info!("Hello World, dude!");
let p = embassy_stm32::init(Default::default());
let mut spi = Spi::new(
p.SPI3,
p.PC10,
p.PC12,
p.PC11,
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NoDma,
NoDma,
Hertz(1_000_000),
Config::default(),
);
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let mut cs = Output::new(p.PE0, Level::High, Speed::VeryHigh);
loop {
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let mut buf = [0x0Au8; 4];
cs.set_low();
unwrap!(spi.blocking_transfer_in_place(&mut buf));
cs.set_high();
info!("xfer {=[u8]:x}", buf);
}
}