Extend USB_GetDeviceConfigDescriptor() routine to require the configuration number within the device to fetch, to add support for multi-configuration devices.

1 files changed, 5 insertions, 2 deletions

diff --git a/LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h b/LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h
index 5c2b6e2de..17b6378e9 100644
--- a/LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h
+++ b/LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h
@@ -183,6 +183,9 @@
 		/* Function Prototypes: */

 			/** Retrieves the configuration descriptor data or size from an attached device via a standard request.

 			 *

+			 *  \param ConfigNumber  Device configuration descriptor number to fetch from the device (usually set to 1 for

+			 *                       single configuration devices)

+			 *

 			 *  \param ConfigSizePtr  Pointer to a uint16_t for either storing or retrieving the configuration

 			 *         descriptor size

 			 *

@@ -192,8 +195,8 @@
 			 *                    of bytes indicated by ConfigSizePtr of the configuration descriptor will be loaded

 			 *                    into the buffer

 			 */

-			uint8_t USB_GetDeviceConfigDescriptor(uint16_t* const ConfigSizePtr, void* BufferPtr)

-			                                      ATTR_NON_NULL_PTR_ARG(1);

+			uint8_t USB_GetDeviceConfigDescriptor(uint8_t ConfigNumber, uint16_t* const ConfigSizePtr, void* BufferPtr)

+			                                      ATTR_NON_NULL_PTR_ARG(2);

 

 			/** Skips to the next sub-descriptor inside the configuration descriptor of the specified type value.

 			 *  The bytes remaining value is automatically decremented.