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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2026-present Eclipse ThreadX contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** 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_interface_endpoint_get PORTABLE C */
/* 6.1.12 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function returns an endpoint container based on the interface */
/* handle and an endpoint index. */
/* */
/* INPUT */
/* */
/* interface Pointer to interface */
/* endpoint_index Index of endpoint to get */
/* endpoint Destination for endpoint */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* Application */
/* USBX Components */
/* */
/**************************************************************************/
UINT _ux_host_stack_interface_endpoint_get(UX_INTERFACE *interface_ptr, UINT endpoint_index, UX_ENDPOINT **endpoint)
{
UINT current_endpoint_index;
UX_ENDPOINT *current_endpoint;
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_STACK_INTERFACE_ENDPOINT_GET, interface_ptr, endpoint_index, 0, 0, UX_TRACE_HOST_STACK_EVENTS, 0, 0)
/* Do a sanity check on the interface handle. */
if (interface_ptr -> ux_interface_handle != (ULONG) (ALIGN_TYPE) interface_ptr)
{
/* Error trap. */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_ENUMERATOR, UX_INTERFACE_HANDLE_UNKNOWN);
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_INTERFACE_HANDLE_UNKNOWN, interface_ptr, 0, 0, UX_TRACE_ERRORS, 0, 0)
return(UX_INTERFACE_HANDLE_UNKNOWN);
}
/* Start with the endpoint attached to the interface. */
current_endpoint = interface_ptr -> ux_interface_first_endpoint;
/* The first endpoint has the index 0. */
current_endpoint_index = 0;
/* Traverse the list of the endpoints until we found the right one. */
while (current_endpoint != UX_NULL)
{
/* Check if the endpoint index matches the current one. */
if (endpoint_index == current_endpoint_index)
{
/* Setup the return endpoint pointer. */
*endpoint=current_endpoint;
/* Return success to the caller. */
return(UX_SUCCESS);
}
/* Move to the next endpoint. */
current_endpoint = current_endpoint -> ux_endpoint_next_endpoint;
/* Move to the next index. */
current_endpoint_index++;
}
/* Error trap. */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_ENUMERATOR, UX_ENDPOINT_HANDLE_UNKNOWN);
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_ENDPOINT_HANDLE_UNKNOWN, endpoint, 0, 0, UX_TRACE_ERRORS, 0, 0)
/* Return an error! */
return(UX_ENDPOINT_HANDLE_UNKNOWN);
}
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _uxe_host_stack_interface_endpoint_get PORTABLE C */
/* 6.3.0 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function checks errors in host stack endpoint get function */
/* call. */
/* */
/* INPUT */
/* */
/* interface_ptr Pointer to interface */
/* endpoint_index Index of endpoint to get */
/* endpoint Destination for endpoint */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _ux_host_stack_interface_endpoint_get Endpoint get */
/* */
/* CALLED BY */
/* */
/* Application */
/* */
/**************************************************************************/
UINT _uxe_host_stack_interface_endpoint_get(UX_INTERFACE *interface_ptr, UINT endpoint_index, UX_ENDPOINT **endpoint)
{
/* Sanity checks. */
if ((interface_ptr == UX_NULL) || (endpoint == UX_NULL))
return(UX_INVALID_PARAMETER);
/* Invoke endpoint get function. */
return(_ux_host_stack_interface_endpoint_get(interface_ptr, endpoint_index, endpoint));
}
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