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-rw-r--r--LUFA/Drivers/USB/HighLevel/Events.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/HighLevel/Events.h b/LUFA/Drivers/USB/HighLevel/Events.h
index 933091a5b..89eb6419d 100644
--- a/LUFA/Drivers/USB/HighLevel/Events.h
+++ b/LUFA/Drivers/USB/HighLevel/Events.h
@@ -195,6 +195,11 @@
* This event is time-critical; each packet within the request transaction must be acknowledged or
* sent within 50ms or the host will abort the transfer.
*
+ * The library interally handles all standard control requests with the exceptions of SYNC FRAME,
+ * SET DESCRIPTOR and SET INTERFACE. These and all other non-standard control requests will be left
+ * for the user to process via this event if desired. If not handled in the user application, requests
+ * are automatically STALLed.
+ *
* \note This event does not exist if the USB_HOST_ONLY token is supplied to the compiler (see
* \ref Group_USBManagement documentation).
*