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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_endpoint_reset PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function resets an endpoint after a stall or other error */
/* condition. */
/* */
/* INPUT */
/* */
/* endpoint Endpoint to abort transfer */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_stack_transfer_request Send transfer request */
/* (ux_hcd_entry_function) HCD entry function */
/* */
/* CALLED BY */
/* */
/* USBX Components */
/* */
/**************************************************************************/
UINT _ux_host_stack_endpoint_reset(UX_ENDPOINT *endpoint)
{
UX_ENDPOINT *control_endpoint;
UX_TRANSFER *transfer_request;
UX_DEVICE *device;
UX_HCD *hcd;
UINT status;
/* Get the device container from the endpoint */
device = endpoint -> ux_endpoint_device;
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_HOST_STACK_ENDPOINT_RESET, device, endpoint, 0, 0, UX_TRACE_HOST_STACK_EVENTS, 0, 0)
/* Get the control endpoint attached to the device. */
control_endpoint = &device -> ux_device_control_endpoint;
/* Retrieve the transfer_request pointer. */
transfer_request = &control_endpoint -> ux_endpoint_transfer_request;
/* Create a transfer_request for the CLEAR_FEATURE request. */
transfer_request -> ux_transfer_request_data_pointer = UX_NULL;
transfer_request -> ux_transfer_request_requested_length = 0;
transfer_request -> ux_transfer_request_function = UX_CLEAR_FEATURE;
transfer_request -> ux_transfer_request_type = UX_REQUEST_OUT| UX_REQUEST_TYPE_STANDARD | UX_REQUEST_TARGET_ENDPOINT;
transfer_request -> ux_transfer_request_value = UX_ENDPOINT_HALT;
transfer_request -> ux_transfer_request_index = endpoint -> ux_endpoint_descriptor.bEndpointAddress;
/* Send request to HCD layer. */
status = _ux_host_stack_transfer_request(transfer_request);
/* Reset the endpoint at the HCD level. */
if (status == UX_SUCCESS)
{
/* Pickup HCD pointer. */
hcd = UX_DEVICE_HCD_GET(device);
/* Call HCD entry function. */
status = hcd -> ux_hcd_entry_function(hcd, UX_HCD_RESET_ENDPOINT, endpoint);
}
/* And return the completion status. */
return(status);
}
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