1 files changed, 68 insertions, 0 deletions

diff --git a/examples/mcxa/src/bin/lpuart_dma.rs b/examples/mcxa/src/bin/lpuart_dma.rs
new file mode 100644
index 000000000..cc86f6a40
--- /dev/null
+++ b/examples/mcxa/src/bin/lpuart_dma.rs
@@ -0,0 +1,68 @@
+//! LPUART DMA example for MCXA276.
+//!
+//! This example demonstrates using DMA for UART TX and RX operations.
+//! It sends a message using DMA, then waits for 16 characters to be received
+//! via DMA and echoes them back.
+//!
+//! The DMA request sources are automatically derived from the LPUART instance type.
+//! DMA clock/reset/init is handled automatically by the HAL.
+
+#![no_std]
+#![no_main]
+
+use embassy_executor::Spawner;
+use embassy_mcxa::clocks::config::Div8;
+use embassy_mcxa::lpuart::{Config, LpuartDma};
+use {defmt_rtt as _, embassy_mcxa as hal, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let mut cfg = hal::config::Config::default();
+    cfg.clock_cfg.sirc.fro_12m_enabled = true;
+    cfg.clock_cfg.sirc.fro_lf_div = Some(Div8::no_div());
+    let p = hal::init(cfg);
+
+    defmt::info!("LPUART DMA example starting...");
+
+    // Create UART configuration
+    let config = Config {
+        baudrate_bps: 115_200,
+        ..Default::default()
+    };
+
+    // Create UART instance with DMA channels
+    let mut lpuart = LpuartDma::new(
+        p.LPUART2, // Instance
+        p.P2_2,    // TX pin
+        p.P2_3,    // RX pin
+        p.DMA_CH0, // TX DMA channel
+        p.DMA_CH1, // RX DMA channel
+        config,
+    )
+    .unwrap();
+
+    // Send a message using DMA (DMA request source is automatically derived from LPUART2)
+    let tx_msg = b"Hello from LPUART2 DMA TX!\r\n";
+    lpuart.write_dma(tx_msg).await.unwrap();
+
+    defmt::info!("TX DMA complete");
+
+    // Send prompt
+    let prompt = b"Type 16 characters to echo via DMA:\r\n";
+    lpuart.write_dma(prompt).await.unwrap();
+
+    // Receive 16 characters using DMA
+    let mut rx_buf = [0u8; 16];
+    lpuart.read_dma(&mut rx_buf).await.unwrap();
+
+    defmt::info!("RX DMA complete");
+
+    // Echo back the received data
+    let echo_prefix = b"\r\nReceived: ";
+    lpuart.write_dma(echo_prefix).await.unwrap();
+    lpuart.write_dma(&rx_buf).await.unwrap();
+    let done_msg = b"\r\nDone!\r\n";
+    lpuart.write_dma(done_msg).await.unwrap();
+
+    defmt::info!("Example complete");
+}