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common/core/src/ux_host_stack_configuration_instance_create.c
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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 */
/** */
/** Host Stack */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_stack_configuration_instance_create PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function will create a configuration instance. It scan all the */
/* interfaces hooked to the configuration and enable each interface */
/* with the alternate setting 0. */
/* */
/* INPUT */
/* */
/* configuration Pointer to configuration */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_stack_interface_instance_create Create interface instance */
/* */
/* 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 */
/* */
/**************************************************************************/
UINT _ux_host_stack_configuration_instance_create(UX_CONFIGURATION *configuration)
{
UX_INTERFACE *interface;
UINT status;
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_STACK_CONFIGURATION_INSTANCE_CREATE, configuration, 0, 0, 0, UX_TRACE_HOST_STACK_EVENTS, 0, 0)
/* Obtain the first interface for this configuration. */
interface = configuration -> ux_configuration_first_interface;
/* Each selected alternate setting 0 for each interface must be created. */
while (interface != UX_NULL)
{
/* Check if we are dealing with the first alternate setting. */
if (interface -> ux_interface_descriptor.bAlternateSetting == 0)
{
/* Create the interface. */
status = _ux_host_stack_interface_instance_create(interface);
/* Check status, the controller may have refused the endpoint creation. */
if (status != UX_SUCCESS)
/* An error occurred. The interface cannot be mounted. */
return(status);
}
/* Next interface. */
interface = interface -> ux_interface_next_interface;
}
/* Return successful completion. */
return(UX_SUCCESS);
}