common/core/src/ux_hcd_sim_host_endpoint_reset.c


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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 Simulator Controller Driver                                    */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/

#define UX_SOURCE_CODE


/* Include necessary system files.  */

#include "ux_api.h"
#include "ux_hcd_sim_host.h"


/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _ux_hcd_sim_host_endpoint_reset                     PORTABLE C      */
/*                                                           6.1.10       */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Chaoqiong Xiao, Microsoft Corporation                               */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function will reset an endpoint.                               */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    hcd_sim_host                          Pointer to host controller    */
/*    endpoint                              Pointer to endpoint           */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    Completion Status                                                   */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    None                                                                */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    Host Simulator Controller Driver                                    */
/*                                                                        */
/**************************************************************************/
UINT  _ux_hcd_sim_host_endpoint_reset(UX_HCD_SIM_HOST *hcd_sim_host, UX_ENDPOINT *endpoint)
{

UX_HCD_SIM_HOST_ED      *ed;

    UX_PARAMETER_NOT_USED(hcd_sim_host);

    /* From the endpoint container fetch the host simulator ED descriptor.  */
    ed =  (UX_HCD_SIM_HOST_ED *) endpoint -> ux_endpoint_ed;

    /* Reset the data0/data1 toggle bit in the Head TD.  */
    ed -> ux_sim_host_ed_toggle =  0;

#if defined(UX_HOST_STANDALONE)
    /* Reset transfer status.  */
    ed -> ux_sim_host_ed_status &= ~UX_HCD_SIM_HOST_ED_TRANSFER;
#endif

    /* This operation never fails.  */
    return(UX_SUCCESS);
}