embassy/examples/stm32l0/src/bin/spi.rs

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#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use defmt::*;
use embassy::executor::Spawner;
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use embassy_stm32::dma::NoDma;
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use embassy_stm32::gpio::{Level, Output, Speed};
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use embassy_stm32::spi::{Config, Spi};
use embassy_stm32::time::Hertz;
use embassy_stm32::Peripherals;
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use {defmt_rtt as _, panic_probe as _};
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#[embassy::main]
async fn main(_spawner: Spawner, p: Peripherals) {
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info!("Hello World, folks!");
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let mut spi = Spi::new(
p.SPI1,
p.PB3,
p.PA7,
p.PA6,
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NoDma,
NoDma,
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Hertz(1_000_000),
Config::default(),
);
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let mut cs = Output::new(p.PA15, Level::High, Speed::VeryHigh);
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loop {
let mut buf = [0x0Au8; 4];
cs.set_low();
unwrap!(spi.blocking_transfer_in_place(&mut buf));
cs.set_high();
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info!("xfer {=[u8]:x}", buf);
}
}