stm32/spi: more exhaustive test.

1 files changed, 15 insertions, 0 deletions

diff --git a/tests/stm32/src/bin/spi.rs b/tests/stm32/src/bin/spi.rs
index 47d0017ac..6151058b7 100644
--- a/tests/stm32/src/bin/spi.rs
+++ b/tests/stm32/src/bin/spi.rs
@@ -37,9 +37,24 @@ async fn main(_spawner: Spawner, p: Peripherals) {
     // 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 = data;
+    spi.blocking_transfer(&mut buf, &data).unwrap();
+    assert_eq!(buf, data);
+
     spi.blocking_transfer_in_place(&mut buf).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.blocking_write(&buf).unwrap();
+    spi.blocking_read(&mut buf).unwrap();
+    spi.blocking_write(&buf).unwrap();
+    spi.blocking_read(&mut buf).unwrap();
+    spi.blocking_write(&buf).unwrap();
+
+    // Check transfer doesn't break after having done a write, due to garbage in the FIFO
+    spi.blocking_transfer(&mut buf, &data).unwrap();
+    assert_eq!(buf, data);
+
     info!("Test OK");
     cortex_m::asm::bkpt();
 }