Allows hardware manufacturers to define groupings of interfaces. More...

#include <libusbk.h>

Data Fields
UCHAR	bLength
	Size of this descriptor (in bytes)

UCHAR	bDescriptorType
	Descriptor type.

UCHAR	bFirstInterface
	First interface number of the set of interfaces that follow this descriptor.

UCHAR	bInterfaceCount
	The Number of interfaces follow this descriptor that are considered "associated".

UCHAR	bFunctionClass
	`bInterfaceClass` used for this associated interfaces

UCHAR	bFunctionSubClass
	`bInterfaceSubClass` used for the associated interfaces

UCHAR	bFunctionProtocol
	`bInterfaceProtocol` used for the associated interfaces

UCHAR	iFunction
	Index of string descriptor describing the associated interfaces.

Detailed Description

Allows hardware manufacturers to define groupings of interfaces.

The ECN specifies a USB descriptor, called the Interface Association Descriptor (IAD).

The Universal Serial Bus Specification, revision 2.0, does not support grouping more than one interface of a composite device within a single function. However, the USB Device Working Group (DWG) created USB device classes that allow for functions with multiple interfaces, and the USB Implementor's Forum issued an Engineering Change Notification (ECN) that defines a mechanism for grouping interfaces.

The documentation for this struct was generated from the following file:

libusbk.h

Data Fields

Detailed Description