82 lines
2.5 KiB
Rust
82 lines
2.5 KiB
Rust
#![no_std]
|
|
#![no_main]
|
|
#[path = "../common.rs"]
|
|
mod common;
|
|
|
|
use common::*;
|
|
use defmt::assert_eq;
|
|
use embassy_executor::Spawner;
|
|
use embassy_stm32::spi::{self, Spi};
|
|
use embassy_stm32::time::Hertz;
|
|
|
|
#[embassy_executor::main]
|
|
async fn main(_spawner: Spawner) {
|
|
let p = embassy_stm32::init(config());
|
|
info!("Hello World!");
|
|
|
|
let spi = peri!(p, SPI);
|
|
let sck = peri!(p, SPI_SCK);
|
|
let mosi = peri!(p, SPI_MOSI);
|
|
let miso = peri!(p, SPI_MISO);
|
|
let tx_dma = peri!(p, SPI_TX_DMA);
|
|
let rx_dma = peri!(p, SPI_RX_DMA);
|
|
|
|
let mut spi_config = spi::Config::default();
|
|
spi_config.frequency = Hertz(1_000_000);
|
|
|
|
let mut spi = Spi::new(
|
|
spi, sck, // Arduino D13
|
|
mosi, // Arduino D11
|
|
miso, // Arduino D12
|
|
tx_dma, rx_dma, spi_config,
|
|
);
|
|
|
|
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.transfer(&mut buf, &data).await.unwrap();
|
|
assert_eq!(buf, data);
|
|
|
|
spi.transfer_in_place(&mut buf).await.unwrap();
|
|
assert_eq!(buf, data);
|
|
|
|
// Check read/write don't hang. We can't check they transfer the right data
|
|
// without fancier test mechanisms.
|
|
spi.write(&buf).await.unwrap();
|
|
spi.read(&mut buf).await.unwrap();
|
|
spi.write(&buf).await.unwrap();
|
|
spi.read(&mut buf).await.unwrap();
|
|
spi.write(&buf).await.unwrap();
|
|
|
|
// Check transfer doesn't break after having done a write, due to garbage in the FIFO
|
|
spi.transfer(&mut buf, &data).await.unwrap();
|
|
assert_eq!(buf, data);
|
|
|
|
// Check zero-length operations, these should be noops.
|
|
spi.transfer::<u8>(&mut [], &[]).await.unwrap();
|
|
spi.transfer_in_place::<u8>(&mut []).await.unwrap();
|
|
spi.read::<u8>(&mut []).await.unwrap();
|
|
spi.write::<u8>(&[]).await.unwrap();
|
|
|
|
// === Check mixing blocking with async.
|
|
spi.blocking_transfer(&mut buf, &data).unwrap();
|
|
assert_eq!(buf, data);
|
|
spi.transfer(&mut buf, &data).await.unwrap();
|
|
assert_eq!(buf, data);
|
|
spi.blocking_write(&buf).unwrap();
|
|
spi.transfer(&mut buf, &data).await.unwrap();
|
|
assert_eq!(buf, data);
|
|
spi.blocking_read(&mut buf).unwrap();
|
|
spi.blocking_write(&buf).unwrap();
|
|
spi.write(&buf).await.unwrap();
|
|
spi.read(&mut buf).await.unwrap();
|
|
spi.blocking_write(&buf).unwrap();
|
|
spi.blocking_read(&mut buf).unwrap();
|
|
spi.write(&buf).await.unwrap();
|
|
|
|
info!("Test OK");
|
|
cortex_m::asm::bkpt();
|
|
}
|