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/* ----------------------------------------------------------------------------
* 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.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
/*
Title: USBGetDescriptorRequest implementation
About: Purpose
Implementation of the USBGetDescriptorRequest class.
*/
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#include "USBGetDescriptorRequest.h"
//------------------------------------------------------------------------------
// Exported functions
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// Returns the type of the descriptor requested by the host given the
/// corresponding GET_DESCRIPTOR request.
/// \param request Pointer to a USBGenericDescriptor instance.
/// \return Type of the requested descriptor.
//------------------------------------------------------------------------------
unsigned char USBGetDescriptorRequest_GetDescriptorType(
const USBGenericRequest *request)
{
// Requested descriptor type is in the high-byte of the wValue field
return (USBGenericRequest_GetValue(request) >> 8) & 0xFF;
}
//------------------------------------------------------------------------------
/// Returns the index of the requested descriptor, given the corresponding
/// GET_DESCRIPTOR request.
/// \param request Pointer to a USBGenericDescriptor instance.
/// \return Index of the requested descriptor.
//------------------------------------------------------------------------------
unsigned char USBGetDescriptorRequest_GetDescriptorIndex(
const USBGenericRequest *request)
{
// Requested descriptor index if in the low byte of the wValue field
return USBGenericRequest_GetValue(request) & 0xFF;
}
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