[embassy-usb-dfu] accept closure to customise DFU function

This provides a more generic interface for users to customise the DFU function instead of restricting customisation to DFU headers.

1 files changed, 9 insertions, 5 deletions

diff --git a/examples/boot/application/stm32wb-dfu/src/main.rs b/examples/boot/application/stm32wb-dfu/src/main.rs
index 6236dfe52..4d6556597 100644
--- a/examples/boot/application/stm32wb-dfu/src/main.rs
+++ b/examples/boot/application/stm32wb-dfu/src/main.rs
@@ -70,11 +70,15 @@ async fn main(_spawner: Spawner) {
         msos::PropertyData::RegMultiSz(DEVICE_INTERFACE_GUIDS),
     ));
 
-    // For non-composite devices:
-    usb_dfu(&mut builder, &mut state, Duration::from_millis(2500), None);
-
-    // Or for composite devices:
-    // usb_dfu(&mut builder, &mut state, Duration::from_millis(2500), Some(DEVICE_INTERFACE_GUIDS));
+    usb_dfu(&mut builder, &mut state, Duration::from_millis(2500), |func| {
+        // You likely don't have to add these function level headers if your USB device is not composite
+        // (i.e. if your device does not expose another interface in addition to DFU)
+        func.msos_feature(msos::CompatibleIdFeatureDescriptor::new("WINUSB", ""));
+        func.msos_feature(msos::RegistryPropertyFeatureDescriptor::new(
+            "DeviceInterfaceGUIDs",
+            msos::PropertyData::RegMultiSz(DEVICE_INTERFACE_GUIDS),
+        ));
+    });
 
     let mut dev = builder.build();
     dev.run().await