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chore: add spi_async tests for uneven buffers

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Signed-off-by: Lachezar Lechev <elpiel93@gmail.com>
This commit is contained in:
Lachezar Lechev 2023-03-24 12:14:38 +02:00
parent 9939d43800
commit cd2f28d2ab
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GPG Key ID: B2D641D6A2C8E742
1 changed files with 40 additions and 4 deletions
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44
tests/rp/src/bin/spi_async.rs
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@ -1,3 +1,6 @@
//! Make sure to connect GPIO pins 3 (`PIN_3`) and 4 (`PIN_4`) together
//! to run this test.
//!
#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
@ -18,10 +21,43 @@ async fn main(_spawner: Spawner) {
let mut spi = Spi::new(p.SPI0, clk, mosi, miso, p.DMA_CH0, p.DMA_CH1, Config::default());
let tx_buf = [1_u8, 2, 3, 4, 5, 6];
let mut rx_buf = [0_u8; 6];
spi.transfer(&mut rx_buf, &tx_buf).await.unwrap();
assert_eq!(rx_buf, tx_buf);
// equal rx & tx buffers
{
let tx_buf = [1_u8, 2, 3, 4, 5, 6];
let mut rx_buf = [0_u8; 6];
spi.transfer(&mut rx_buf, &tx_buf).await.unwrap();
assert_eq!(rx_buf, tx_buf);
}
// tx > rx buffer
{
let tx_buf = [7_u8, 8, 9, 10, 11, 12];
let mut rx_buf = [0_u8, 3];
spi.transfer(&mut rx_buf, &tx_buf).await.unwrap();
assert_eq!(rx_buf, tx_buf[..3]);
}
// we make sure to that clearing FIFO works after the uneven buffers
// equal rx & tx buffers
{
let tx_buf = [13_u8, 14, 15, 16, 17, 18];
let mut rx_buf = [0_u8; 6];
spi.transfer(&mut rx_buf, &tx_buf).await.unwrap();
assert_eq!(rx_buf, tx_buf);
}
// rx > tx buffer
{
let tx_buf = [19_u8, 20, 21];
let mut rx_buf = [0_u8; 6];
spi.transfer(&mut rx_buf, &tx_buf).await.unwrap();
assert_eq!(rx_buf[..3], tx_buf, "only the first 3 TX bytes should have been received in the RX buffer");
assert_eq!(rx_buf[3..], [0, 0, 0], "the rest of the RX bytes should be empty");
}
info!("Test OK");
cortex_m::asm::bkpt();