/* ----------------------------------------------------------------------------
 *         ATMEL Microcontroller Software Support 
 * ----------------------------------------------------------------------------
 * Copyright (c) 2008, Atmel Corporation
 *
 * All rights reserved.
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 * 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.
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 * Atmel's name may not be used to endorse or promote products derived from
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/*
    Title: CDCHeaderDescriptor

    About: Purpose
        Definition of the CDCHeaderDescriptor class.

    About: Usage
        Should be included in a USB configuration descriptor.
*/

#ifndef CDCHEADERDESCRIPTOR_H
#define CDCHEADERDESCRIPTOR_H

//------------------------------------------------------------------------------
//         Types
//------------------------------------------------------------------------------

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

/*
    Type: CDCHeaderDescriptor
        Marks the beginning of the concatenated set of functional descriptors
        for the interface.

    Variables:
        bFunctionLength - Size of this descriptor in bytes.
        bDescriptorType - Descriptor type (<CDCDescriptors_INTERFACE>).
        bDescriptorSubtype - Descriptor sub-type (<CDCDescriptors_HEADER>).
        bcdCDC - USB CDC specification release number.
*/
typedef struct {

    unsigned char bFunctionLength;
    unsigned char bDescriptorType;
    unsigned char bDescriptorSubtype;
    unsigned short bcdCDC;

} __attribute__ ((packed)) CDCHeaderDescriptor; // GCC

#ifdef __ICCARM__          // IAR
#pragma pack()             // IAR
#endif                     // IAR

#endif //#ifndef CDCHEADERDESCRIPTOR_H