/* ----------------------------------------------------------------------------
 *         ATMEL Microcontroller Software Support
 * ----------------------------------------------------------------------------
 * Copyright (c) 2008, Atmel Corporation
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Atmel's name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
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/*
 * $Id: USBInterfaceDescriptor.h 23837 2010-10-13 13:45:05Z mahendran.p $
 */

/**
 * \file
 *
 * \section Purpose
 *
 *    Definition of a class for manipulating USB interface descriptors.
 *
 * \section Usage
 *
 *    - Declare USBInterfaceDescriptor instance as a part of the configuration
 *      descriptors of a USB device.
 *
 */

#ifndef USBINTERFACEDESCRIPTOR_H
#define USBINTERFACEDESCRIPTOR_H

/**\addtogroup usb_descriptor
 *@{
 */

/*------------------------------------------------------------------------------
 *         Types
 *------------------------------------------------------------------------------*/

#ifdef __ICCARM__          /* IAR */
#pragma pack(1)            /* IAR */
#define __attribute__(...) /* IAR */
#endif                     /* IAR */

/**
 * \typedef USBInterfaceDescriptor
 * \brief USB standard interface descriptor structure.
 */
typedef struct _USBInterfaceDescriptor {

   /** Size of the descriptor in bytes. */
   unsigned char bLength;
   /** Descriptor type (USBGenericDescriptor_INTERFACE). */
   unsigned char bDescriptorType;
   /** Number of the interface in its configuration. */
   unsigned char bInterfaceNumber;
   /** Value to select this alternate interface setting. */
   unsigned char bAlternateSetting;
   /** Number of endpoints used by the inteface (excluding endpoint 0). */
   unsigned char bNumEndpoints;
   /** Interface class code. */
   unsigned char bInterfaceClass;
   /** Interface subclass code. */
   unsigned char bInterfaceSubClass;
   /** Interface protocol code. */
   unsigned char bInterfaceProtocol;
   /** Index of the interface string descriptor. */
   unsigned char iInterface;

} __attribute__ ((packed)) USBInterfaceDescriptor; /* GCC */


#ifdef __ICCARM__          /* IAR */

#pragma pack()             /* IAR */

#endif                     /* IAR */


/**@}*/

#endif /*#ifndef USBINTERFACEDESCRIPTOR_H */


