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/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** USBX Component */
/** */
/** Utility */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_utility_descriptor_pack PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function will pack an application structure into a USB */
/* descriptor. */
/* */
/* INPUT */
/* */
/* descriptor Pointer to the unpacked */
/* descriptor */
/* descriptor_structure Components of the descriptor */
/* descriptor_entries Number of entries in the */
/* descriptor */
/* raw_descriptor Pointer to packed descriptor */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _ux_utility_long_put Put 32-bit value */
/* _ux_utility_short_put Put 16-bit value */
/* */
/* CALLED BY */
/* */
/* USBX Components */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
/* 09-30-2020 Chaoqiong Xiao Modified comment(s), */
/* resulting in version 6.1 */
/* */
/**************************************************************************/
VOID _ux_utility_descriptor_pack(UCHAR * descriptor, UCHAR * descriptor_structure,
UINT descriptor_entries, UCHAR * raw_descriptor)
{
/* Loop on all the entries in this descriptor. */
while(descriptor_entries--)
{
/* Get the length of that component. */
switch(*descriptor_structure++)
{
/* Check the size then build the component from the source and
insert it into the target descriptor. */
case 4:
_ux_utility_long_put(raw_descriptor, *((ULONG *) descriptor));
raw_descriptor += 4;
break;
case 2:
_ux_utility_short_put(raw_descriptor, (USHORT)*((ULONG *) descriptor));
raw_descriptor += 2;
break;
default:
*raw_descriptor = (UCHAR) *((ULONG *) descriptor);
raw_descriptor++;
}
/* Add the size of the component to the destination. */
descriptor += 4;
}
/* Return to caller. */
return;
}