From 98f9d442b44dbe2e3e4b3c8296be7e78d5d05450 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Sun, 24 Jul 2011 09:39:28 +0200 Subject: initial import of the usb ccid example for the sam7s --- at91lib/usb/common/core/USBGetDescriptorRequest.c | 72 +++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 at91lib/usb/common/core/USBGetDescriptorRequest.c (limited to 'at91lib/usb/common/core/USBGetDescriptorRequest.c') diff --git a/at91lib/usb/common/core/USBGetDescriptorRequest.c b/at91lib/usb/common/core/USBGetDescriptorRequest.c new file mode 100644 index 0000000..2937929 --- /dev/null +++ b/at91lib/usb/common/core/USBGetDescriptorRequest.c @@ -0,0 +1,72 @@ +/* ---------------------------------------------------------------------------- + * 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; +} + -- cgit v1.2.3