embassy/tests/stm32/src/bin/spi_dma.rs

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2021-12-07 05:14:27 +01:00
#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
#[path = "../example_common.rs"]
mod example_common;
use defmt::assert_eq;
use embassy::executor::Spawner;
use embassy_stm32::spi::{self, Spi};
use embassy_stm32::time::Hertz;
use embassy_stm32::Peripherals;
use embassy_traits::spi::FullDuplex;
use example_common::*;
#[embassy::main(config = "config()")]
async fn main(_spawner: Spawner, p: Peripherals) {
info!("Hello World!");
#[cfg(feature = "stm32f429zi")]
let (sck, mosi, miso, tx_dma, rx_dma) = (p.PA5, p.PA7, p.PA6, p.DMA2_CH3, p.DMA2_CH2);
#[cfg(feature = "stm32h755zi")]
let (sck, mosi, miso, tx_dma, rx_dma) = (p.PA5, p.PB5, p.PA6, p.DMA1_CH0, p.DMA1_CH1);
#[cfg(feature = "stm32g491re")]
let (sck, mosi, miso, tx_dma, rx_dma) = (p.PA5, p.PA7, p.PA6, p.DMA1_CH0, p.DMA1_CH1);
#[cfg(feature = "stm32g071rb")]
let (sck, mosi, miso, tx_dma, rx_dma) = (p.PA5, p.PA7, p.PA6, p.DMA1_CH0, p.DMA1_CH1);
#[cfg(feature = "stm32wb55rg")]
let (sck, mosi, miso, tx_dma, rx_dma) = (p.PA5, p.PA7, p.PA6, p.DMA1_CH0, p.DMA1_CH1);
let mut spi = Spi::new(
p.SPI1,
sck, // Arduino D13
mosi, // Arduino D11
miso, // Arduino D12
tx_dma,
rx_dma,
Hertz(1_000_000),
spi::Config::default(),
);
let data: [u8; 9] = [0x00, 0xFF, 0xAA, 0x55, 0xC0, 0xFF, 0xEE, 0xC0, 0xDE];
// Arduino pins D11 and D12 (MOSI-MISO) are connected together with a 1K resistor.
// so we should get the data we sent back.
let mut buf = [0; 9];
spi.read_write(&mut buf, &data).await.unwrap();
assert_eq!(buf, data);
info!("Test OK");
cortex_m::asm::bkpt();
}