[iMXRT] add a minimal DMA copy example

While at that, also update the PACs to their latest versions.

2 files changed, 28 insertions, 2 deletions

diff --git a/embassy-imxrt/Cargo.toml b/embassy-imxrt/Cargo.toml
index c47756f10..81377579b 100644
--- a/embassy-imxrt/Cargo.toml
+++ b/embassy-imxrt/Cargo.toml
@@ -103,5 +103,5 @@ document-features = "0.2.7"
 paste = "1.0"
 
 # PACs
-mimxrt685s-pac = { version = "0.4.0", optional = true, features = ["rt", "critical-section"] }
-mimxrt633s-pac = { version = "0.4.0", optional = true, features = ["rt", "critical-section"] }
+mimxrt685s-pac = { version = "0.5.0", optional = true, features = ["rt", "critical-section"] }
+mimxrt633s-pac = { version = "0.5.0", optional = true, features = ["rt", "critical-section"] }
diff --git a/examples/mimxrt6/src/bin/dma.rs b/examples/mimxrt6/src/bin/dma.rs
new file mode 100644
index 000000000..b490efc6b
--- /dev/null
+++ b/examples/mimxrt6/src/bin/dma.rs
@@ -0,0 +1,26 @@
+#![no_std]
+#![no_main]
+
+extern crate embassy_imxrt_examples;
+
+use defmt::info;
+use embassy_executor::Spawner;
+use embassy_imxrt::dma::copy;
+use {defmt_rtt as _, panic_probe as _};
+
+const BUFLEN: usize = 1024;
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let p = embassy_imxrt::init(Default::default());
+
+    info!("Test memory-to-memory DMA transfers");
+
+    let src = [0x55u8; BUFLEN];
+    let mut dst = [0u8; BUFLEN];
+
+    unsafe { copy(p.DMA0_CH0, &src, &mut dst) }.await;
+    assert!(dst == src);
+
+    info!("DMA copy succeeded");
+}