text: /**
    ******************************************************************************
    * @file    stm32h7xx_hal_pcd.c
    * @author  MCD Application Team
    * @brief   PCD HAL module driver.
    *          This file provides firmware functions to manage the following
    *          functionalities of the USB Peripheral Controller:
    *           + Initialization and de-initialization functions
    *           + IO operation functions
    *           + Peripheral Control functions
    *           + Peripheral State functions
    *
    @verbatim
    ==============================================================================
                      ##### How to use this driver #####
    ==============================================================================
      [..]
        The PCD HAL driver can be used as follows:
  
       (#) Declare a PCD_HandleTypeDef handle structure, for example:
           PCD_HandleTypeDef  hpcd;
  
       (#) Fill parameters of Init structure in HCD handle
  
       (#) Call HAL_PCD_Init() API to initialize the PCD peripheral (Core, Device core, ...)
  
       (#) Initialize the PCD low level resources through the HAL_PCD_MspInit() API:
           (##) Enable the PCD/USB Low Level interface clock using
                (+++) __HAL_RCC_USB_OTG_FS_CLK_ENABLE();
                (+++) __HAL_RCC_USB_OTG_HS_CLK_ENABLE(); (For High Speed Mode)
  
           (##) Initialize the related GPIO clocks
           (##) Configure PCD pin-out
           (##) Configure PCD NVIC interrupt
  
       (#)Associate the Upper USB device stack to the HAL PCD Driver:
           (##) hpcd.pData = pdev;
  
       (#)Enable PCD transmission and reception:
           (##) HAL_PCD_Start();
  
    @endverbatim
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
    * All rights reserved.</center></h2>
    *
    * This software component is licensed by ST under BSD 3-Clause license,
    * the "License"; You may not use this file except in compliance with the
    * License. You may obtain a copy of the License at:
    *                        opensource.org/licenses/BSD-3-Clause
    *
    ******************************************************************************
    */
  
  /* Includes ------------------------------------------------------------------*/
  #include <stm32h7/STM32H7xx_HAL_Driver/Inc/stm32h7xx_hal.h>
  
  /** @addtogroup STM32H7xx_HAL_Driver
    * @{
    */
  
  /** @defgroup PCD PCD
    * @brief PCD HAL module driver
    * @{
    */
  
  #ifdef HAL_PCD_MODULE_ENABLED
  
  #if defined (USB_OTG_FS) || defined (USB_OTG_HS)
  
  /* Private types -------------------------------------------------------------*/
  /* Private variables ---------------------------------------------------------*/
  /* Private constants ---------------------------------------------------------*/
  /* Private macros ------------------------------------------------------------*/
  /** @defgroup PCD_Private_Macros PCD Private Macros
    * @{
    */
  #define PCD_MIN(a, b)  (((a) < (b)) ? (a) : (b))
  #define PCD_MAX(a, b)  (((a) > (b)) ? (a) : (b))
  /**
    * @}
    */
  
  /* Private functions prototypes ----------------------------------------------*/
  /** @defgroup PCD_Private_Functions PCD Private Functions
    * @{
    */
  #if defined (USB_OTG_FS) || defined (USB_OTG_HS)
  static HAL_StatusTypeDef PCD_WriteEmptyTxFifo(PCD_HandleTypeDef *hpcd, uint32_t epnum);
  static HAL_StatusTypeDef PCD_EP_OutXfrComplete_int(PCD_HandleTypeDef *hpcd, uint32_t epnum);
  static HAL_StatusTypeDef PCD_EP_OutSetupPacket_int(PCD_HandleTypeDef *hpcd, uint32_t epnum);
  #endif /* defined (USB_OTG_FS) || defined (USB_OTG_HS) */
  /**
    * @}
    */
  
  /* Exported functions --------------------------------------------------------*/
  /** @defgroup PCD_Exported_Functions PCD Exported Functions
    * @{
    */
  
  /** @defgroup PCD_Exported_Functions_Group1 Initialization and de-initialization functions
   *  @brief    Initialization and Configuration functions
   *
  @verbatim
   ===============================================================================
              ##### Initialization and de-initialization functions #####
   ===============================================================================
      [..]  This section provides functions allowing to:
  
  @endverbatim
    * @{
    */
  
  /**
    * @brief  Initializes the PCD according to the specified
    *         parameters in the PCD_InitTypeDef and initialize the associated handle.
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_Init(PCD_HandleTypeDef *hpcd)
  {
    USB_OTG_GlobalTypeDef *USBx;
    uint8_t i;
  
    /* Check the PCD handle allocation */
    if (hpcd == NULL)
    {
      return HAL_ERROR;
    }
  
    /* Check the parameters */
    assert_param(IS_PCD_ALL_INSTANCE(hpcd->Instance));
  
    USBx = hpcd->Instance;
  
    if (hpcd->State == HAL_PCD_STATE_RESET)
    {
      /* Allocate lock resource and initialize it */
      hpcd->Lock = HAL_UNLOCKED;
  
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
      hpcd->SOFCallback = HAL_PCD_SOFCallback;
      hpcd->SetupStageCallback = HAL_PCD_SetupStageCallback;
      hpcd->ResetCallback = HAL_PCD_ResetCallback;
      hpcd->SuspendCallback = HAL_PCD_SuspendCallback;
      hpcd->ResumeCallback = HAL_PCD_ResumeCallback;
      hpcd->ConnectCallback = HAL_PCD_ConnectCallback;
      hpcd->DisconnectCallback = HAL_PCD_DisconnectCallback;
      hpcd->DataOutStageCallback = HAL_PCD_DataOutStageCallback;
      hpcd->DataInStageCallback = HAL_PCD_DataInStageCallback;
      hpcd->ISOOUTIncompleteCallback = HAL_PCD_ISOOUTIncompleteCallback;
      hpcd->ISOINIncompleteCallback = HAL_PCD_ISOINIncompleteCallback;
      hpcd->LPMCallback = HAL_PCDEx_LPM_Callback;
      hpcd->BCDCallback = HAL_PCDEx_BCD_Callback;
  
      if (hpcd->MspInitCallback == NULL)
      {
        hpcd->MspInitCallback = HAL_PCD_MspInit;
      }
  
      /* Init the low level hardware */
      hpcd->MspInitCallback(hpcd);
  #else
      /* Init the low level hardware : GPIO, CLOCK, NVIC... */
      HAL_PCD_MspInit(hpcd);
  #endif /* (USE_HAL_PCD_REGISTER_CALLBACKS) */
    }
  
    hpcd->State = HAL_PCD_STATE_BUSY;
  
    /* Disable DMA mode for FS instance */
    if ((USBx->CID & (0x1U << 8)) == 0U)
    {
      hpcd->Init.dma_enable = 0U;
    }
  
    /* Disable the Interrupts */
    __HAL_PCD_DISABLE(hpcd);
  
    /*Init the Core (common init.) */
    if (USB_CoreInit(hpcd->Instance, hpcd->Init) != HAL_OK)
    {
      hpcd->State = HAL_PCD_STATE_ERROR;
      return HAL_ERROR;
    }
  
    /* Force Device Mode*/
    (void)USB_SetCurrentMode(hpcd->Instance, USB_DEVICE_MODE);
  
    /* Init endpoints structures */
    for (i = 0U; i < hpcd->Init.dev_endpoints; i++)
    {
      /* Init ep structure */
      hpcd->IN_ep[i].is_in = 1U;
      hpcd->IN_ep[i].num = i;
      hpcd->IN_ep[i].tx_fifo_num = i;
      /* Control until ep is activated */
      hpcd->IN_ep[i].type = EP_TYPE_CTRL;
      hpcd->IN_ep[i].maxpacket = 0U;
      hpcd->IN_ep[i].xfer_buff = 0U;
      hpcd->IN_ep[i].xfer_len = 0U;
    }
  
    for (i = 0U; i < hpcd->Init.dev_endpoints; i++)
    {
      hpcd->OUT_ep[i].is_in = 0U;
      hpcd->OUT_ep[i].num = i;
      /* Control until ep is activated */
      hpcd->OUT_ep[i].type = EP_TYPE_CTRL;
      hpcd->OUT_ep[i].maxpacket = 0U;
      hpcd->OUT_ep[i].xfer_buff = 0U;
      hpcd->OUT_ep[i].xfer_len = 0U;
    }
  
    /* Init Device */
    if (USB_DevInit(hpcd->Instance, hpcd->Init) != HAL_OK)
    {
      hpcd->State = HAL_PCD_STATE_ERROR;
      return HAL_ERROR;
    }
  
    hpcd->USB_Address = 0U;
    hpcd->State = HAL_PCD_STATE_READY;
    
    /* Activate LPM */
    if (hpcd->Init.lpm_enable == 1U)
    {
      (void)HAL_PCDEx_ActivateLPM(hpcd);
    }
    
    (void)USB_DevDisconnect(hpcd->Instance);
  
    return HAL_OK;
  }
  
  /**
    * @brief  DeInitializes the PCD peripheral.
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_DeInit(PCD_HandleTypeDef *hpcd)
  {
    /* Check the PCD handle allocation */
    if (hpcd == NULL)
    {
      return HAL_ERROR;
    }
  
    hpcd->State = HAL_PCD_STATE_BUSY;
  
    /* Stop Device */
    (void)HAL_PCD_Stop(hpcd);
  
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
    if (hpcd->MspDeInitCallback == NULL)
    {
      hpcd->MspDeInitCallback = HAL_PCD_MspDeInit; /* Legacy weak MspDeInit  */
    }
  
    /* DeInit the low level hardware */
    hpcd->MspDeInitCallback(hpcd);
  #else
    /* DeInit the low level hardware: CLOCK, NVIC.*/
    HAL_PCD_MspDeInit(hpcd);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
  
    hpcd->State = HAL_PCD_STATE_RESET;
  
    return HAL_OK;
  }
  
  /**
    * @brief  Initializes the PCD MSP.
    * @param  hpcd PCD handle
    * @retval None
    */
  __weak void HAL_PCD_MspInit(PCD_HandleTypeDef *hpcd)
  {
    /* Prevent unused argument(s) compilation warning */
    UNUSED(hpcd);
  
    /* NOTE : This function should not be modified, when the callback is needed,
              the HAL_PCD_MspInit could be implemented in the user file
     */
  }
  
  /**
    * @brief  DeInitializes PCD MSP.
    * @param  hpcd PCD handle
    * @retval None
    */
  __weak void HAL_PCD_MspDeInit(PCD_HandleTypeDef *hpcd)
  {
    /* Prevent unused argument(s) compilation warning */
    UNUSED(hpcd);
  
    /* NOTE : This function should not be modified, when the callback is needed,
              the HAL_PCD_MspDeInit could be implemented in the user file
     */
  }
  
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
  /**
    * @brief  Register a User USB PCD Callback
    *         To be used instead of the weak predefined callback
    * @param  hpcd USB PCD handle
    * @param  CallbackID ID of the callback to be registered
    *         This parameter can be one of the following values:
    *          @arg @ref HAL_PCD_SOF_CB_ID USB PCD SOF callback ID
    *          @arg @ref HAL_PCD_SETUPSTAGE_CB_ID USB PCD Setup callback ID
    *          @arg @ref HAL_PCD_RESET_CB_ID USB PCD Reset callback ID
    *          @arg @ref HAL_PCD_SUSPEND_CB_ID USB PCD Suspend callback ID
    *          @arg @ref HAL_PCD_RESUME_CB_ID USB PCD Resume callback ID
    *          @arg @ref HAL_PCD_CONNECT_CB_ID USB PCD Connect callback ID
    *          @arg @ref HAL_PCD_DISCONNECT_CB_ID OTG PCD Disconnect callback ID
    *          @arg @ref HAL_PCD_MSPINIT_CB_ID MspDeInit callback ID
    *          @arg @ref HAL_PCD_MSPDEINIT_CB_ID MspDeInit callback ID
    * @param  pCallback pointer to the Callback function
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_RegisterCallback(PCD_HandleTypeDef *hpcd, HAL_PCD_CallbackIDTypeDef CallbackID, pPCD_CallbackTypeDef pCallback)
  {
    HAL_StatusTypeDef status = HAL_OK;
  
    if (pCallback == NULL)
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
      return HAL_ERROR;
    }
    /* Process locked */
    __HAL_LOCK(hpcd);
  
    if (hpcd->State == HAL_PCD_STATE_READY)
    {
      switch (CallbackID)
      {
        case HAL_PCD_SOF_CB_ID :
          hpcd->SOFCallback = pCallback;
          break;
  
        case HAL_PCD_SETUPSTAGE_CB_ID :
          hpcd->SetupStageCallback = pCallback;
          break;
  
        case HAL_PCD_RESET_CB_ID :
          hpcd->ResetCallback = pCallback;
          break;
  
        case HAL_PCD_SUSPEND_CB_ID :
          hpcd->SuspendCallback = pCallback;
          break;
  
        case HAL_PCD_RESUME_CB_ID :
          hpcd->ResumeCallback = pCallback;
          break;
  
        case HAL_PCD_CONNECT_CB_ID :
          hpcd->ConnectCallback = pCallback;
          break;
  
        case HAL_PCD_DISCONNECT_CB_ID :
          hpcd->DisconnectCallback = pCallback;
          break;
  
        case HAL_PCD_MSPINIT_CB_ID :
          hpcd->MspInitCallback = pCallback;
          break;
  
        case HAL_PCD_MSPDEINIT_CB_ID :
          hpcd->MspDeInitCallback = pCallback;
          break;
  
        default :
          /* Update the error code */
          hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
          /* Return error status */
          status =  HAL_ERROR;
          break;
      }
    }
    else if (hpcd->State == HAL_PCD_STATE_RESET)
    {
      switch (CallbackID)
      {
        case HAL_PCD_MSPINIT_CB_ID :
          hpcd->MspInitCallback = pCallback;
          break;
  
        case HAL_PCD_MSPDEINIT_CB_ID :
          hpcd->MspDeInitCallback = pCallback;
          break;
  
        default :
          /* Update the error code */
          hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
          /* Return error status */
          status =  HAL_ERROR;
          break;
      }
    }
    else
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
      /* Return error status */
      status =  HAL_ERROR;
    }
  
    /* Release Lock */
    __HAL_UNLOCK(hpcd);
    return status;
  }
  
  /**
    * @brief  Unregister an USB PCD Callback
    *         USB PCD callabck is redirected to the weak predefined callback
    * @param  hpcd USB PCD handle
    * @param  CallbackID ID of the callback to be unregistered
    *         This parameter can be one of the following values:
    *          @arg @ref HAL_PCD_SOF_CB_ID USB PCD SOF callback ID
    *          @arg @ref HAL_PCD_SETUPSTAGE_CB_ID USB PCD Setup callback ID
    *          @arg @ref HAL_PCD_RESET_CB_ID USB PCD Reset callback ID
    *          @arg @ref HAL_PCD_SUSPEND_CB_ID USB PCD Suspend callback ID
    *          @arg @ref HAL_PCD_RESUME_CB_ID USB PCD Resume callback ID
    *          @arg @ref HAL_PCD_CONNECT_CB_ID USB PCD Connect callback ID
    *          @arg @ref HAL_PCD_DISCONNECT_CB_ID OTG PCD Disconnect callback ID
    *          @arg @ref HAL_PCD_MSPINIT_CB_ID MspDeInit callback ID
    *          @arg @ref HAL_PCD_MSPDEINIT_CB_ID MspDeInit callback ID
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_UnRegisterCallback(PCD_HandleTypeDef *hpcd, HAL_PCD_CallbackIDTypeDef CallbackID)
  {
    HAL_StatusTypeDef status = HAL_OK;
  
    /* Process locked */
    __HAL_LOCK(hpcd);
  
    /* Setup Legacy weak Callbacks  */
    if (hpcd->State == HAL_PCD_STATE_READY)
    {
      switch (CallbackID)
      {
        case HAL_PCD_SOF_CB_ID :
          hpcd->SOFCallback = HAL_PCD_SOFCallback;
          break;
  
        case HAL_PCD_SETUPSTAGE_CB_ID :
          hpcd->SetupStageCallback = HAL_PCD_SetupStageCallback;
          break;
  
        case HAL_PCD_RESET_CB_ID :
          hpcd->ResetCallback = HAL_PCD_ResetCallback;
          break;
  
        case HAL_PCD_SUSPEND_CB_ID :
          hpcd->SuspendCallback = HAL_PCD_SuspendCallback;
          break;
  
        case HAL_PCD_RESUME_CB_ID :
          hpcd->ResumeCallback = HAL_PCD_ResumeCallback;
          break;
  
        case HAL_PCD_CONNECT_CB_ID :
          hpcd->ConnectCallback = HAL_PCD_ConnectCallback;
          break;
  
        case HAL_PCD_DISCONNECT_CB_ID :
          hpcd->DisconnectCallback = HAL_PCD_DisconnectCallback;
          break;
  
        case HAL_PCD_MSPINIT_CB_ID :
          hpcd->MspInitCallback = HAL_PCD_MspInit;
          break;
  
        case HAL_PCD_MSPDEINIT_CB_ID :
          hpcd->MspDeInitCallback = HAL_PCD_MspDeInit;
          break;
  
        default :
          /* Update the error code */
          hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
          /* Return error status */
          status =  HAL_ERROR;
          break;
      }
    }
    else if (hpcd->State == HAL_PCD_STATE_RESET)
    {
      switch (CallbackID)
      {
        case HAL_PCD_MSPINIT_CB_ID :
          hpcd->MspInitCallback = HAL_PCD_MspInit;
          break;
  
        case HAL_PCD_MSPDEINIT_CB_ID :
          hpcd->MspDeInitCallback = HAL_PCD_MspDeInit;
          break;
  
        default :
          /* Update the error code */
          hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
          /* Return error status */
          status =  HAL_ERROR;
          break;
      }
    }
    else
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      /* Return error status */
      status =  HAL_ERROR;
    }
  
    /* Release Lock */
    __HAL_UNLOCK(hpcd);
    return status;
  }
  
  /**
    * @brief  Register USB PCD Data OUT Stage Callback
    *         To be used instead of the weak HAL_PCD_DataOutStageCallback() predefined callback
    * @param  hpcd PCD handle
    * @param  pCallback pointer to the USB PCD Data OUT Stage Callback function
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_RegisterDataOutStageCallback(PCD_HandleTypeDef *hpcd, pPCD_DataOutStageCallbackTypeDef pCallback)
  {
    HAL_StatusTypeDef status = HAL_OK;
  
    if (pCallback == NULL)
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      return HAL_ERROR;
    }
  
    /* Process locked */
    __HAL_LOCK(hpcd);
  
    if (hpcd->State == HAL_PCD_STATE_READY)
    {
      hpcd->DataOutStageCallback = pCallback;
    }
    else
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      /* Return error status */
      status =  HAL_ERROR;
    }
  
    /* Release Lock */
    __HAL_UNLOCK(hpcd);
  
    return status;
  }
  
  /**
    * @brief  UnRegister the USB PCD Data OUT Stage Callback
    *         USB PCD Data OUT Stage Callback is redirected to the weak HAL_PCD_DataOutStageCallback() predefined callback
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_UnRegisterDataOutStageCallback(PCD_HandleTypeDef *hpcd)
  {
    HAL_StatusTypeDef status = HAL_OK;
  
    /* Process locked */
    __HAL_LOCK(hpcd);
  
    if (hpcd->State == HAL_PCD_STATE_READY)
    {
      hpcd->DataOutStageCallback = HAL_PCD_DataOutStageCallback; /* Legacy weak DataOutStageCallback  */
    }
    else
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      /* Return error status */
      status =  HAL_ERROR;
    }
  
    /* Release Lock */
    __HAL_UNLOCK(hpcd);
  
    return status;
  }
  
  /**
    * @brief  Register USB PCD Data IN Stage Callback
    *         To be used instead of the weak HAL_PCD_DataInStageCallback() predefined callback
    * @param  hpcd PCD handle
    * @param  pCallback pointer to the USB PCD Data IN Stage Callback function
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_RegisterDataInStageCallback(PCD_HandleTypeDef *hpcd, pPCD_DataInStageCallbackTypeDef pCallback)
  {
    HAL_StatusTypeDef status = HAL_OK;
  
    if (pCallback == NULL)
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      return HAL_ERROR;
    }
  
    /* Process locked */
    __HAL_LOCK(hpcd);
  
    if (hpcd->State == HAL_PCD_STATE_READY)
    {
      hpcd->DataInStageCallback = pCallback;
    }
    else
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      /* Return error status */
      status =  HAL_ERROR;
    }
  
    /* Release Lock */
    __HAL_UNLOCK(hpcd);
  
    return status;
  }
  
  /**
    * @brief  UnRegister the USB PCD Data IN Stage Callback
    *         USB PCD Data OUT Stage Callback is redirected to the weak HAL_PCD_DataInStageCallback() predefined callback
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_UnRegisterDataInStageCallback(PCD_HandleTypeDef *hpcd)
  {
    HAL_StatusTypeDef status = HAL_OK;
  
    /* Process locked */
    __HAL_LOCK(hpcd);
  
    if (hpcd->State == HAL_PCD_STATE_READY)
    {
      hpcd->DataInStageCallback = HAL_PCD_DataInStageCallback; /* Legacy weak DataInStageCallback  */
    }
    else
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      /* Return error status */
      status =  HAL_ERROR;
    }
  
    /* Release Lock */
    __HAL_UNLOCK(hpcd);
  
    return status;
  }
  
  /**
    * @brief  Register USB PCD Iso OUT incomplete Callback
    *         To be used instead of the weak HAL_PCD_ISOOUTIncompleteCallback() predefined callback
    * @param  hpcd PCD handle
    * @param  pCallback pointer to the USB PCD Iso OUT incomplete Callback function
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_RegisterIsoOutIncpltCallback(PCD_HandleTypeDef *hpcd, pPCD_IsoOutIncpltCallbackTypeDef pCallback)
  {
    HAL_StatusTypeDef status = HAL_OK;
  
    if (pCallback == NULL)
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      return HAL_ERROR;
    }
  
    /* Process locked */
    __HAL_LOCK(hpcd);
  
    if (hpcd->State == HAL_PCD_STATE_READY)
    {
      hpcd->ISOOUTIncompleteCallback = pCallback;
    }
    else
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      /* Return error status */
      status =  HAL_ERROR;
    }
  
    /* Release Lock */
    __HAL_UNLOCK(hpcd);
  
    return status;
  }
  
  /**
    * @brief  UnRegister the USB PCD Iso OUT incomplete Callback
    *         USB PCD Iso OUT incomplete Callback is redirected to the weak HAL_PCD_ISOOUTIncompleteCallback() predefined callback
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_UnRegisterIsoOutIncpltCallback(PCD_HandleTypeDef *hpcd)
  {
    HAL_StatusTypeDef status = HAL_OK;
  
    /* Process locked */
    __HAL_LOCK(hpcd);
  
    if (hpcd->State == HAL_PCD_STATE_READY)
    {
      hpcd->ISOOUTIncompleteCallback = HAL_PCD_ISOOUTIncompleteCallback; /* Legacy weak ISOOUTIncompleteCallback  */
    }
    else
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      /* Return error status */
      status =  HAL_ERROR;
    }
  
    /* Release Lock */
    __HAL_UNLOCK(hpcd);
  
    return status;
  }
  
  /**
    * @brief  Register USB PCD Iso IN incomplete Callback
    *         To be used instead of the weak HAL_PCD_ISOINIncompleteCallback() predefined callback
    * @param  hpcd PCD handle
    * @param  pCallback pointer to the USB PCD Iso IN incomplete Callback function
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_RegisterIsoInIncpltCallback(PCD_HandleTypeDef *hpcd, pPCD_IsoInIncpltCallbackTypeDef pCallback)
  {
    HAL_StatusTypeDef status = HAL_OK;
  
    if (pCallback == NULL)
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      return HAL_ERROR;
    }
  
    /* Process locked */
    __HAL_LOCK(hpcd);
  
    if (hpcd->State == HAL_PCD_STATE_READY)
    {
      hpcd->ISOINIncompleteCallback = pCallback;
    }
    else
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      /* Return error status */
      status =  HAL_ERROR;
    }
  
    /* Release Lock */
    __HAL_UNLOCK(hpcd);
  
    return status;
  }
  
  /**
    * @brief  UnRegister the USB PCD Iso IN incomplete Callback
    *         USB PCD Iso IN incomplete Callback is redirected to the weak HAL_PCD_ISOINIncompleteCallback() predefined callback
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_UnRegisterIsoInIncpltCallback(PCD_HandleTypeDef *hpcd)
  {
    HAL_StatusTypeDef status = HAL_OK;
  
    /* Process locked */
    __HAL_LOCK(hpcd);
  
    if (hpcd->State == HAL_PCD_STATE_READY)
    {
      hpcd->ISOINIncompleteCallback = HAL_PCD_ISOINIncompleteCallback; /* Legacy weak ISOINIncompleteCallback  */
    }
    else
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      /* Return error status */
      status =  HAL_ERROR;
    }
  
    /* Release Lock */
    __HAL_UNLOCK(hpcd);
  
    return status;
  }
  
  /**
    * @brief  Register USB PCD BCD Callback
    *         To be used instead of the weak HAL_PCDEx_BCD_Callback() predefined callback
    * @param  hpcd PCD handle
    * @param  pCallback pointer to the USB PCD BCD Callback function
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_RegisterBcdCallback(PCD_HandleTypeDef *hpcd, pPCD_BcdCallbackTypeDef pCallback)
  {
    HAL_StatusTypeDef status = HAL_OK;
  
    if (pCallback == NULL)
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      return HAL_ERROR;
    }
  
    /* Process locked */
    __HAL_LOCK(hpcd);
  
    if (hpcd->State == HAL_PCD_STATE_READY)
    {
      hpcd->BCDCallback = pCallback;
    }
    else
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      /* Return error status */
      status =  HAL_ERROR;
    }
  
    /* Release Lock */
    __HAL_UNLOCK(hpcd);
  
    return status;
  }
  
  /**
    * @brief  UnRegister the USB PCD BCD Callback
    *         USB BCD Callback is redirected to the weak HAL_PCDEx_BCD_Callback() predefined callback
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_UnRegisterBcdCallback(PCD_HandleTypeDef *hpcd)
  {
    HAL_StatusTypeDef status = HAL_OK;
  
    /* Process locked */
    __HAL_LOCK(hpcd);
  
    if (hpcd->State == HAL_PCD_STATE_READY)
    {
      hpcd->BCDCallback = HAL_PCDEx_BCD_Callback; /* Legacy weak HAL_PCDEx_BCD_Callback  */
    }
    else
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      /* Return error status */
      status =  HAL_ERROR;
    }
  
    /* Release Lock */
    __HAL_UNLOCK(hpcd);
  
    return status;
  }
  
  /**
    * @brief  Register USB PCD LPM Callback
    *         To be used instead of the weak HAL_PCDEx_LPM_Callback() predefined callback
    * @param  hpcd PCD handle
    * @param  pCallback pointer to the USB PCD LPM Callback function
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_RegisterLpmCallback(PCD_HandleTypeDef *hpcd, pPCD_LpmCallbackTypeDef pCallback)
  {
    HAL_StatusTypeDef status = HAL_OK;
  
    if (pCallback == NULL)
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      return HAL_ERROR;
    }
  
    /* Process locked */
    __HAL_LOCK(hpcd);
  
    if (hpcd->State == HAL_PCD_STATE_READY)
    {
      hpcd->LPMCallback = pCallback;
    }
    else
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      /* Return error status */
      status =  HAL_ERROR;
    }
  
    /* Release Lock */
    __HAL_UNLOCK(hpcd);
  
    return status;
  }
  
  /**
    * @brief  UnRegister the USB PCD LPM Callback
    *         USB LPM Callback is redirected to the weak HAL_PCDEx_LPM_Callback() predefined callback
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_UnRegisterLpmCallback(PCD_HandleTypeDef *hpcd)
  {
    HAL_StatusTypeDef status = HAL_OK;
  
    /* Process locked */
    __HAL_LOCK(hpcd);
  
    if (hpcd->State == HAL_PCD_STATE_READY)
    {
      hpcd->LPMCallback = HAL_PCDEx_LPM_Callback; /* Legacy weak HAL_PCDEx_LPM_Callback  */
    }
    else
    {
      /* Update the error code */
      hpcd->ErrorCode |= HAL_PCD_ERROR_INVALID_CALLBACK;
  
      /* Return error status */
      status =  HAL_ERROR;
    }
  
    /* Release Lock */
    __HAL_UNLOCK(hpcd);
  
    return status;
  }
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
  
  /**
    * @}
    */
  
  /** @defgroup PCD_Exported_Functions_Group2 Input and Output operation functions
   *  @brief   Data transfers functions
   *
  @verbatim
   ===============================================================================
                        ##### IO operation functions #####
   ===============================================================================
      [..]
      This subsection provides a set of functions allowing to manage the PCD data
      transfers.
  
  @endverbatim
    * @{
    */
  
  /**
    * @brief  Start the USB device
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_Start(PCD_HandleTypeDef *hpcd)
  {
  #if defined (USB_OTG_FS) || defined (USB_OTG_HS)
    USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
  #endif /* defined (USB_OTG_FS) || defined (USB_OTG_HS) */
  
    __HAL_LOCK(hpcd);
  #if defined (USB_OTG_FS) || defined (USB_OTG_HS)
    if ((hpcd->Init.battery_charging_enable == 1U) &&
        (hpcd->Init.phy_itface != USB_OTG_ULPI_PHY))
    {
      /* Enable USB Transceiver */
      USBx->GCCFG |= USB_OTG_GCCFG_PWRDWN;
    }
  #endif /* defined (USB_OTG_FS) || defined (USB_OTG_HS) */
    (void)USB_DevConnect(hpcd->Instance);
    __HAL_PCD_ENABLE(hpcd);
    __HAL_UNLOCK(hpcd);
    return HAL_OK;
  }
  
  /**
    * @brief  Stop the USB device.
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_Stop(PCD_HandleTypeDef *hpcd)
  {
    __HAL_LOCK(hpcd);
    __HAL_PCD_DISABLE(hpcd);
  
    if (USB_StopDevice(hpcd->Instance) != HAL_OK)
    {
      __HAL_UNLOCK(hpcd);
      return HAL_ERROR;
    }
  
    (void)USB_DevDisconnect(hpcd->Instance);
    __HAL_UNLOCK(hpcd);
  
    return HAL_OK;
  }
  #if defined (USB_OTG_FS) || defined (USB_OTG_HS)
  /**
    * @brief  Handles PCD interrupt request.
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  void HAL_PCD_IRQHandler(PCD_HandleTypeDef *hpcd)
  {
    USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
    uint32_t USBx_BASE = (uint32_t)USBx;
    uint32_t i, ep_intr, epint, epnum = 0U;
    uint32_t fifoemptymsk, temp;
    USB_OTG_EPTypeDef *ep;
  
    /* ensure that we are in device mode */
    if (USB_GetMode(hpcd->Instance) == USB_OTG_MODE_DEVICE)
    {
      /* avoid spurious interrupt */
      if (__HAL_PCD_IS_INVALID_INTERRUPT(hpcd))
      {
        return;
      }
  
      if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_MMIS))
      {
        /* incorrect mode, acknowledge the interrupt */
        __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_MMIS);
      }
  
      if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_OEPINT))
      {
        epnum = 0U;
  
        /* Read in the device interrupt bits */
        ep_intr = USB_ReadDevAllOutEpInterrupt(hpcd->Instance);
  
        while (ep_intr != 0U)
        {
          if ((ep_intr & 0x1U) != 0U)
          {
            epint = USB_ReadDevOutEPInterrupt(hpcd->Instance, (uint8_t)epnum);
  
            if ((epint & USB_OTG_DOEPINT_XFRC) == USB_OTG_DOEPINT_XFRC)
            {
              CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_XFRC);
              (void)PCD_EP_OutXfrComplete_int(hpcd, epnum);
            }
  
            if ((epint & USB_OTG_DOEPINT_STUP) == USB_OTG_DOEPINT_STUP)
            {
              /* Class B setup phase done for previous decoded setup */
              (void)PCD_EP_OutSetupPacket_int(hpcd, epnum);
              CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_STUP);
            }
  
            if ((epint & USB_OTG_DOEPINT_OTEPDIS) == USB_OTG_DOEPINT_OTEPDIS)
            {
              CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_OTEPDIS);
            }
  
            /* Clear Status Phase Received interrupt */
            if ((epint & USB_OTG_DOEPINT_OTEPSPR) == USB_OTG_DOEPINT_OTEPSPR)
            {
              if (hpcd->Init.dma_enable == 1U)
              {
                (void)USB_EP0_OutStart(hpcd->Instance, 1U, (uint8_t *)hpcd->Setup);
              }
              CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_OTEPSPR);
            }
  
            /* Clear OUT NAK interrupt */
            if ((epint & USB_OTG_DOEPINT_NAK) == USB_OTG_DOEPINT_NAK)
            {
              CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_NAK);
            }
          }
          epnum++;
          ep_intr >>= 1U;
        }
      }
  
      if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_IEPINT))
      {
        /* Read in the device interrupt bits */
        ep_intr = USB_ReadDevAllInEpInterrupt(hpcd->Instance);
  
        epnum = 0U;
  
        while (ep_intr != 0U)
        {
          if ((ep_intr & 0x1U) != 0U) /* In ITR */
          {
            epint = USB_ReadDevInEPInterrupt(hpcd->Instance, (uint8_t)epnum);
  
            if ((epint & USB_OTG_DIEPINT_XFRC) == USB_OTG_DIEPINT_XFRC)
            {
              fifoemptymsk = (uint32_t)(0x1UL << (epnum & EP_ADDR_MSK));
              USBx_DEVICE->DIEPEMPMSK &= ~fifoemptymsk;
  
              CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_XFRC);
  
              if (hpcd->Init.dma_enable == 1U)
              {
                hpcd->IN_ep[epnum].xfer_buff += hpcd->IN_ep[epnum].maxpacket;
              }
  
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
              hpcd->DataInStageCallback(hpcd, (uint8_t)epnum);
  #else
              HAL_PCD_DataInStageCallback(hpcd, (uint8_t)epnum);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
  
              if (hpcd->Init.dma_enable == 1U)
              {
                /* this is ZLP, so prepare EP0 for next setup */
                if ((epnum == 0U) && (hpcd->IN_ep[epnum].xfer_len == 0U))
                {
                  /* prepare to rx more setup packets */
                  (void)USB_EP0_OutStart(hpcd->Instance, 1U, (uint8_t *)hpcd->Setup);
                }
              }
            }
            if ((epint & USB_OTG_DIEPINT_TOC) == USB_OTG_DIEPINT_TOC)
            {
              CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_TOC);
            }
            if ((epint & USB_OTG_DIEPINT_ITTXFE) == USB_OTG_DIEPINT_ITTXFE)
            {
              CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_ITTXFE);
            }
            if ((epint & USB_OTG_DIEPINT_INEPNE) == USB_OTG_DIEPINT_INEPNE)
            {
              CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_INEPNE);
            }
            if ((epint & USB_OTG_DIEPINT_EPDISD) == USB_OTG_DIEPINT_EPDISD)
            {
              CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_EPDISD);
            }
            if ((epint & USB_OTG_DIEPINT_TXFE) == USB_OTG_DIEPINT_TXFE)
            {
              (void)PCD_WriteEmptyTxFifo(hpcd, epnum);
            }
          }
          epnum++;
          ep_intr >>= 1U;
        }
      }
  
      /* Handle Resume Interrupt */
      if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_WKUINT))
      {
        /* Clear the Remote Wake-up Signaling */
        USBx_DEVICE->DCTL &= ~USB_OTG_DCTL_RWUSIG;
  
        if (hpcd->LPM_State == LPM_L1)
        {
          hpcd->LPM_State = LPM_L0;
  
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
          hpcd->LPMCallback(hpcd, PCD_LPM_L0_ACTIVE);
  #else
          HAL_PCDEx_LPM_Callback(hpcd, PCD_LPM_L0_ACTIVE);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
        }
        else
        {
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
          hpcd->ResumeCallback(hpcd);
  #else
          HAL_PCD_ResumeCallback(hpcd);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
        }
  
        __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_WKUINT);
      }
  
      /* Handle Suspend Interrupt */
      if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_USBSUSP))
      {
        if ((USBx_DEVICE->DSTS & USB_OTG_DSTS_SUSPSTS) == USB_OTG_DSTS_SUSPSTS)
        {
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
          hpcd->SuspendCallback(hpcd);
  #else
          HAL_PCD_SuspendCallback(hpcd);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
        }
        __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_USBSUSP);
      }
      
      /* Handle LPM Interrupt */
      if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_LPMINT))
      {
        __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_LPMINT);
  
        if (hpcd->LPM_State == LPM_L0)
        {
          hpcd->LPM_State = LPM_L1;
          hpcd->BESL = (hpcd->Instance->GLPMCFG & USB_OTG_GLPMCFG_BESL) >> 2U;
  
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
          hpcd->LPMCallback(hpcd, PCD_LPM_L1_ACTIVE);
  #else
          HAL_PCDEx_LPM_Callback(hpcd, PCD_LPM_L1_ACTIVE);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
        }
        else
        {
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
          hpcd->SuspendCallback(hpcd);
  #else
          HAL_PCD_SuspendCallback(hpcd);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
        }
      }
      
      /* Handle Reset Interrupt */
      if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_USBRST))
      {
        USBx_DEVICE->DCTL &= ~USB_OTG_DCTL_RWUSIG;
        (void)USB_FlushTxFifo(hpcd->Instance, 0x10U);
  
        for (i = 0U; i < hpcd->Init.dev_endpoints; i++)
        {
          USBx_INEP(i)->DIEPINT = 0xFB7FU;
          USBx_INEP(i)->DIEPCTL &= ~USB_OTG_DIEPCTL_STALL;
          USBx_OUTEP(i)->DOEPINT = 0xFB7FU;
          USBx_OUTEP(i)->DOEPCTL &= ~USB_OTG_DOEPCTL_STALL;
        }
        USBx_DEVICE->DAINTMSK |= 0x10001U;
  
        if (hpcd->Init.use_dedicated_ep1 != 0U)
        {
          USBx_DEVICE->DOUTEP1MSK |= USB_OTG_DOEPMSK_STUPM |
                                     USB_OTG_DOEPMSK_XFRCM |
                                     USB_OTG_DOEPMSK_EPDM;
  
          USBx_DEVICE->DINEP1MSK |= USB_OTG_DIEPMSK_TOM |
                                    USB_OTG_DIEPMSK_XFRCM |
                                    USB_OTG_DIEPMSK_EPDM;
        }
        else
        {
          USBx_DEVICE->DOEPMSK |= USB_OTG_DOEPMSK_STUPM |
                                  USB_OTG_DOEPMSK_XFRCM |
                                  USB_OTG_DOEPMSK_EPDM |
                                  USB_OTG_DOEPMSK_OTEPSPRM |
                                  USB_OTG_DOEPMSK_NAKM;
  
          USBx_DEVICE->DIEPMSK |= USB_OTG_DIEPMSK_TOM |
                                  USB_OTG_DIEPMSK_XFRCM |
                                  USB_OTG_DIEPMSK_EPDM;
        }
  
        /* Set Default Address to 0 */
        USBx_DEVICE->DCFG &= ~USB_OTG_DCFG_DAD;
  
        /* setup EP0 to receive SETUP packets */
        (void)USB_EP0_OutStart(hpcd->Instance, (uint8_t)hpcd->Init.dma_enable,
                               (uint8_t *)hpcd->Setup);
  
        __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_USBRST);
      }
  
      /* Handle Enumeration done Interrupt */
      if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_ENUMDNE))
      {
        (void)USB_ActivateSetup(hpcd->Instance);
        hpcd->Init.speed = USB_GetDevSpeed(hpcd->Instance);
  
        /* Set USB Turnaround time */
        (void)USB_SetTurnaroundTime(hpcd->Instance,
                                    HAL_RCC_GetHCLKFreq(),
                                    (uint8_t)hpcd->Init.speed);
  
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
        hpcd->ResetCallback(hpcd);
  #else
        HAL_PCD_ResetCallback(hpcd);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
  
        __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_ENUMDNE);
      }
  
      /* Handle RxQLevel Interrupt */
      if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_RXFLVL))
      {
        USB_MASK_INTERRUPT(hpcd->Instance, USB_OTG_GINTSTS_RXFLVL);
  
        temp = USBx->GRXSTSP;
  
        ep = &hpcd->OUT_ep[temp & USB_OTG_GRXSTSP_EPNUM];
  
        if (((temp & USB_OTG_GRXSTSP_PKTSTS) >> 17) ==  STS_DATA_UPDT)
        {
          if ((temp & USB_OTG_GRXSTSP_BCNT) != 0U)
          {
            (void)USB_ReadPacket(USBx, ep->xfer_buff,
                                 (uint16_t)((temp & USB_OTG_GRXSTSP_BCNT) >> 4));
  
            ep->xfer_buff += (temp & USB_OTG_GRXSTSP_BCNT) >> 4;
            ep->xfer_count += (temp & USB_OTG_GRXSTSP_BCNT) >> 4;
          }
        }
        else if (((temp & USB_OTG_GRXSTSP_PKTSTS) >> 17) ==  STS_SETUP_UPDT)
        {
          (void)USB_ReadPacket(USBx, (uint8_t *)hpcd->Setup, 8U);
          ep->xfer_count += (temp & USB_OTG_GRXSTSP_BCNT) >> 4;
        }
        else
        {
          /* ... */
        }
        USB_UNMASK_INTERRUPT(hpcd->Instance, USB_OTG_GINTSTS_RXFLVL);
      }
  
      /* Handle SOF Interrupt */
      if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_SOF))
      {
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
        hpcd->SOFCallback(hpcd);
  #else
        HAL_PCD_SOFCallback(hpcd);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
  
        __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_SOF);
      }
  
      /* Handle Incomplete ISO IN Interrupt */
      if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_IISOIXFR))
      {
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
        hpcd->ISOINIncompleteCallback(hpcd, (uint8_t)epnum);
  #else
        HAL_PCD_ISOINIncompleteCallback(hpcd, (uint8_t)epnum);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
  
        __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_IISOIXFR);
      }
  
      /* Handle Incomplete ISO OUT Interrupt */
      if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_PXFR_INCOMPISOOUT))
      {
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
        hpcd->ISOOUTIncompleteCallback(hpcd, (uint8_t)epnum);
  #else
        HAL_PCD_ISOOUTIncompleteCallback(hpcd, (uint8_t)epnum);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
  
        __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_PXFR_INCOMPISOOUT);
      }
  
      /* Handle Connection event Interrupt */
      if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_SRQINT))
      {
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
        hpcd->ConnectCallback(hpcd);
  #else
        HAL_PCD_ConnectCallback(hpcd);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
  
        __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_SRQINT);
      }
  
      /* Handle Disconnection event Interrupt */
      if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_OTGINT))
      {
        temp = hpcd->Instance->GOTGINT;
  
        if ((temp & USB_OTG_GOTGINT_SEDET) == USB_OTG_GOTGINT_SEDET)
        {
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
          hpcd->DisconnectCallback(hpcd);
  #else
          HAL_PCD_DisconnectCallback(hpcd);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
        }
        hpcd->Instance->GOTGINT |= temp;
      }
    }
  }
  #endif /* defined (USB_OTG_FS) || defined (USB_OTG_HS) */
  
  
  /**
    * @brief  Data OUT stage callback.
    * @param  hpcd PCD handle
    * @param  epnum endpoint number
    * @retval None
    */
  __weak void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
  {
    /* Prevent unused argument(s) compilation warning */
    UNUSED(hpcd);
    UNUSED(epnum);
  
    /* NOTE : This function should not be modified, when the callback is needed,
              the HAL_PCD_DataOutStageCallback could be implemented in the user file
     */
  }
  
  /**
    * @brief  Data IN stage callback
    * @param  hpcd PCD handle
    * @param  epnum endpoint number
    * @retval None
    */
  __weak void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
  {
    /* Prevent unused argument(s) compilation warning */
    UNUSED(hpcd);
    UNUSED(epnum);
  
    /* NOTE : This function should not be modified, when the callback is needed,
              the HAL_PCD_DataInStageCallback could be implemented in the user file
     */
  }
  /**
    * @brief  Setup stage callback
    * @param  hpcd PCD handle
    * @retval None
    */
  __weak void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd)
  {
    /* Prevent unused argument(s) compilation warning */
    UNUSED(hpcd);
  
    /* NOTE : This function should not be modified, when the callback is needed,
              the HAL_PCD_SetupStageCallback could be implemented in the user file
     */
  }
  
  /**
    * @brief  USB Start Of Frame callback.
    * @param  hpcd PCD handle
    * @retval None
    */
  __weak void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
  {
    /* Prevent unused argument(s) compilation warning */
    UNUSED(hpcd);
  
    /* NOTE : This function should not be modified, when the callback is needed,
              the HAL_PCD_SOFCallback could be implemented in the user file
     */
  }
  
  /**
    * @brief  USB Reset callback.
    * @param  hpcd PCD handle
    * @retval None
    */
  __weak void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
  {
    /* Prevent unused argument(s) compilation warning */
    UNUSED(hpcd);
  
    /* NOTE : This function should not be modified, when the callback is needed,
              the HAL_PCD_ResetCallback could be implemented in the user file
     */
  }
  
  /**
    * @brief  Suspend event callback.
    * @param  hpcd PCD handle
    * @retval None
    */
  __weak void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd)
  {
    /* Prevent unused argument(s) compilation warning */
    UNUSED(hpcd);
  
    /* NOTE : This function should not be modified, when the callback is needed,
              the HAL_PCD_SuspendCallback could be implemented in the user file
     */
  }
  
  /**
    * @brief  Resume event callback.
    * @param  hpcd PCD handle
    * @retval None
    */
  __weak void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
  {
    /* Prevent unused argument(s) compilation warning */
    UNUSED(hpcd);
  
    /* NOTE : This function should not be modified, when the callback is needed,
              the HAL_PCD_ResumeCallback could be implemented in the user file
     */
  }
  
  /**
    * @brief  Incomplete ISO OUT callback.
    * @param  hpcd PCD handle
    * @param  epnum endpoint number
    * @retval None
    */
  __weak void HAL_PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
  {
    /* Prevent unused argument(s) compilation warning */
    UNUSED(hpcd);
    UNUSED(epnum);
  
    /* NOTE : This function should not be modified, when the callback is needed,
              the HAL_PCD_ISOOUTIncompleteCallback could be implemented in the user file
     */
  }
  
  /**
    * @brief  Incomplete ISO IN callback.
    * @param  hpcd PCD handle
    * @param  epnum endpoint number
    * @retval None
    */
  __weak void HAL_PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
  {
    /* Prevent unused argument(s) compilation warning */
    UNUSED(hpcd);
    UNUSED(epnum);
  
    /* NOTE : This function should not be modified, when the callback is needed,
              the HAL_PCD_ISOINIncompleteCallback could be implemented in the user file
     */
  }
  
  /**
    * @brief  Connection event callback.
    * @param  hpcd PCD handle
    * @retval None
    */
  __weak void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd)
  {
    /* Prevent unused argument(s) compilation warning */
    UNUSED(hpcd);
  
    /* NOTE : This function should not be modified, when the callback is needed,
              the HAL_PCD_ConnectCallback could be implemented in the user file
     */
  }
  
  /**
    * @brief  Disconnection event callback.
    * @param  hpcd PCD handle
    * @retval None
    */
  __weak void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd)
  {
    /* Prevent unused argument(s) compilation warning */
    UNUSED(hpcd);
  
    /* NOTE : This function should not be modified, when the callback is needed,
              the HAL_PCD_DisconnectCallback could be implemented in the user file
     */
  }
  
  /**
    * @}
    */
  
  /** @defgroup PCD_Exported_Functions_Group3 Peripheral Control functions
   *  @brief   management functions
   *
  @verbatim
   ===============================================================================
                        ##### Peripheral Control functions #####
   ===============================================================================
      [..]
      This subsection provides a set of functions allowing to control the PCD data
      transfers.
  
  @endverbatim
    * @{
    */
  
  /**
    * @brief  Connect the USB device
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_DevConnect(PCD_HandleTypeDef *hpcd)
  {
  #if defined (USB_OTG_FS) || defined (USB_OTG_HS)
    USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
  #endif /* defined (USB_OTG_FS) || defined (USB_OTG_HS) */
  
    __HAL_LOCK(hpcd);
  #if defined (USB_OTG_FS) || defined (USB_OTG_HS)
    if ((hpcd->Init.battery_charging_enable == 1U) &&
        (hpcd->Init.phy_itface != USB_OTG_ULPI_PHY))
    {
      /* Enable USB Transceiver */
      USBx->GCCFG |= USB_OTG_GCCFG_PWRDWN;
    }
  #endif /* defined (USB_OTG_FS) || defined (USB_OTG_HS) */
    (void)USB_DevConnect(hpcd->Instance);
    __HAL_UNLOCK(hpcd);
    return HAL_OK;
  }
  
  /**
    * @brief  Disconnect the USB device.
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_DevDisconnect(PCD_HandleTypeDef *hpcd)
  {
    __HAL_LOCK(hpcd);
    (void)USB_DevDisconnect(hpcd->Instance);
    __HAL_UNLOCK(hpcd);
    return HAL_OK;
  }
  
  /**
    * @brief  Set the USB Device address.
    * @param  hpcd PCD handle
    * @param  address new device address
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_SetAddress(PCD_HandleTypeDef *hpcd, uint8_t address)
  {
    __HAL_LOCK(hpcd);
    hpcd->USB_Address = address;
    (void)USB_SetDevAddress(hpcd->Instance, address);
    __HAL_UNLOCK(hpcd);
    return HAL_OK;
  }
  /**
    * @brief  Open and configure an endpoint.
    * @param  hpcd PCD handle
    * @param  ep_addr endpoint address
    * @param  ep_mps endpoint max packet size
    * @param  ep_type endpoint type
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_EP_Open(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint16_t ep_mps, uint8_t ep_type)
  {
    HAL_StatusTypeDef  ret = HAL_OK;
    PCD_EPTypeDef *ep;
  
    if ((ep_addr & 0x80U) == 0x80U)
    {
      ep = &hpcd->IN_ep[ep_addr & EP_ADDR_MSK];
      ep->is_in = 1U;
    }
    else
    {
      ep = &hpcd->OUT_ep[ep_addr & EP_ADDR_MSK];
      ep->is_in = 0U;
    }
  
    ep->num = ep_addr & EP_ADDR_MSK;
    ep->maxpacket = ep_mps;
    ep->type = ep_type;
  
    if (ep->is_in != 0U)
    {
      /* Assign a Tx FIFO */
      ep->tx_fifo_num = ep->num;
    }
    /* Set initial data PID. */
    if (ep_type == EP_TYPE_BULK)
    {
      ep->data_pid_start = 0U;
    }
  
    __HAL_LOCK(hpcd);
    (void)USB_ActivateEndpoint(hpcd->Instance, ep);
    __HAL_UNLOCK(hpcd);
  
    return ret;
  }
  
  /**
    * @brief  Deactivate an endpoint.
    * @param  hpcd PCD handle
    * @param  ep_addr endpoint address
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_EP_Close(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
  {
    PCD_EPTypeDef *ep;
  
    if ((ep_addr & 0x80U) == 0x80U)
    {
      ep = &hpcd->IN_ep[ep_addr & EP_ADDR_MSK];
      ep->is_in = 1U;
    }
    else
    {
      ep = &hpcd->OUT_ep[ep_addr & EP_ADDR_MSK];
      ep->is_in = 0U;
    }
    ep->num   = ep_addr & EP_ADDR_MSK;
  
    __HAL_LOCK(hpcd);
    (void)USB_DeactivateEndpoint(hpcd->Instance, ep);
    __HAL_UNLOCK(hpcd);
    return HAL_OK;
  }
  
  
  /**
    * @brief  Receive an amount of data.
    * @param  hpcd PCD handle
    * @param  ep_addr endpoint address
    * @param  pBuf pointer to the reception buffer
    * @param  len amount of data to be received
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_EP_Receive(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len)
  {
    PCD_EPTypeDef *ep;
  
    ep = &hpcd->OUT_ep[ep_addr & EP_ADDR_MSK];
  
    /*setup and start the Xfer */
    ep->xfer_buff = pBuf;
    ep->xfer_len = len;
    ep->xfer_count = 0U;
    ep->is_in = 0U;
    ep->num = ep_addr & EP_ADDR_MSK;
  
    if (hpcd->Init.dma_enable == 1U)
    {
      ep->dma_addr = (uint32_t)pBuf;
    }
  
    if ((ep_addr & EP_ADDR_MSK) == 0U)
    {
      (void)USB_EP0StartXfer(hpcd->Instance, ep, (uint8_t)hpcd->Init.dma_enable);
    }
    else
    {
      (void)USB_EPStartXfer(hpcd->Instance, ep, (uint8_t)hpcd->Init.dma_enable);
    }
  
    return HAL_OK;
  }
  
  /**
    * @brief  Get Received Data Size
    * @param  hpcd PCD handle
    * @param  ep_addr endpoint address
    * @retval Data Size
    */
  uint32_t HAL_PCD_EP_GetRxCount(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
  {
    return hpcd->OUT_ep[ep_addr & EP_ADDR_MSK].xfer_count;
  }
  /**
    * @brief  Send an amount of data
    * @param  hpcd PCD handle
    * @param  ep_addr endpoint address
    * @param  pBuf pointer to the transmission buffer
    * @param  len amount of data to be sent
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_EP_Transmit(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len)
  {
    PCD_EPTypeDef *ep;
  
    ep = &hpcd->IN_ep[ep_addr & EP_ADDR_MSK];
  
    /*setup and start the Xfer */
    ep->xfer_buff = pBuf;
    ep->xfer_len = len;
    ep->xfer_count = 0U;
    ep->is_in = 1U;
    ep->num = ep_addr & EP_ADDR_MSK;
  
    if (hpcd->Init.dma_enable == 1U)
    {
      ep->dma_addr = (uint32_t)pBuf;
    }
  
    if ((ep_addr & EP_ADDR_MSK) == 0U)
    {
      (void)USB_EP0StartXfer(hpcd->Instance, ep, (uint8_t)hpcd->Init.dma_enable);
    }
    else
    {
      (void)USB_EPStartXfer(hpcd->Instance, ep, (uint8_t)hpcd->Init.dma_enable);
    }
  
    return HAL_OK;
  }
  
  /**
    * @brief  Set a STALL condition over an endpoint
    * @param  hpcd PCD handle
    * @param  ep_addr endpoint address
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_EP_SetStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
  {
    PCD_EPTypeDef *ep;
  
    if (((uint32_t)ep_addr & EP_ADDR_MSK) > hpcd->Init.dev_endpoints)
    {
      return HAL_ERROR;
    }
  
    if ((0x80U & ep_addr) == 0x80U)
    {
      ep = &hpcd->IN_ep[ep_addr & EP_ADDR_MSK];
      ep->is_in = 1U;
    }
    else
    {
      ep = &hpcd->OUT_ep[ep_addr];
      ep->is_in = 0U;
    }
  
    ep->is_stall = 1U;
    ep->num = ep_addr & EP_ADDR_MSK;
  
    __HAL_LOCK(hpcd);
  
    (void)USB_EPSetStall(hpcd->Instance, ep);
    if ((ep_addr & EP_ADDR_MSK) == 0U)
    {
      (void)USB_EP0_OutStart(hpcd->Instance, (uint8_t)hpcd->Init.dma_enable, (uint8_t *)hpcd->Setup);
    }
    __HAL_UNLOCK(hpcd);
  
    return HAL_OK;
  }
  
  /**
    * @brief  Clear a STALL condition over in an endpoint
    * @param  hpcd PCD handle
    * @param  ep_addr endpoint address
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_EP_ClrStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
  {
    PCD_EPTypeDef *ep;
  
    if (((uint32_t)ep_addr & 0x0FU) > hpcd->Init.dev_endpoints)
    {
      return HAL_ERROR;
    }
  
    if ((0x80U & ep_addr) == 0x80U)
    {
      ep = &hpcd->IN_ep[ep_addr & EP_ADDR_MSK];
      ep->is_in = 1U;
    }
    else
    {
      ep = &hpcd->OUT_ep[ep_addr & EP_ADDR_MSK];
      ep->is_in = 0U;
    }
  
    ep->is_stall = 0U;
    ep->num = ep_addr & EP_ADDR_MSK;
  
    __HAL_LOCK(hpcd);
    (void)USB_EPClearStall(hpcd->Instance, ep);
    __HAL_UNLOCK(hpcd);
  
    return HAL_OK;
  }
  
  /**
    * @brief  Flush an endpoint
    * @param  hpcd PCD handle
    * @param  ep_addr endpoint address
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_EP_Flush(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
  {
    __HAL_LOCK(hpcd);
  
    if ((ep_addr & 0x80U) == 0x80U)
    {
      (void)USB_FlushTxFifo(hpcd->Instance, (uint32_t)ep_addr & EP_ADDR_MSK);
    }
    else
    {
      (void)USB_FlushRxFifo(hpcd->Instance);
    }
  
    __HAL_UNLOCK(hpcd);
  
    return HAL_OK;
  }
  
  /**
    * @brief  Activate remote wakeup signalling
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_ActivateRemoteWakeup(PCD_HandleTypeDef *hpcd)
  {
    return (USB_ActivateRemoteWakeup(hpcd->Instance));
  }
  
  /**
    * @brief  De-activate remote wakeup signalling.
    * @param  hpcd PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCD_DeActivateRemoteWakeup(PCD_HandleTypeDef *hpcd)
  {
    return (USB_DeActivateRemoteWakeup(hpcd->Instance));
  }
  
  /**
    * @}
    */
  
  /** @defgroup PCD_Exported_Functions_Group4 Peripheral State functions
   *  @brief   Peripheral State functions
   *
  @verbatim
   ===============================================================================
                        ##### Peripheral State functions #####
   ===============================================================================
      [..]
      This subsection permits to get in run-time the status of the peripheral
      and the data flow.
  
  @endverbatim
    * @{
    */
  
  /**
    * @brief  Return the PCD handle state.
    * @param  hpcd PCD handle
    * @retval HAL state
    */
  PCD_StateTypeDef HAL_PCD_GetState(PCD_HandleTypeDef *hpcd)
  {
    return hpcd->State;
  }
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /* Private functions ---------------------------------------------------------*/
  /** @addtogroup PCD_Private_Functions
    * @{
    */
  #if defined (USB_OTG_FS) || defined (USB_OTG_HS)
  /**
    * @brief  Check FIFO for the next packet to be loaded.
    * @param  hpcd PCD handle
    * @param  epnum endpoint number
    * @retval HAL status
    */
  static HAL_StatusTypeDef PCD_WriteEmptyTxFifo(PCD_HandleTypeDef *hpcd, uint32_t epnum)
  {
    USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
    uint32_t USBx_BASE = (uint32_t)USBx;
    USB_OTG_EPTypeDef *ep;
    uint32_t len;
    uint32_t len32b;
    uint32_t fifoemptymsk;
  
    ep = &hpcd->IN_ep[epnum];
  
    if (ep->xfer_count > ep->xfer_len)
    {
      return HAL_ERROR;
    }
  
    len = ep->xfer_len - ep->xfer_count;
  
    if (len > ep->maxpacket)
    {
      len = ep->maxpacket;
    }
  
    len32b = (len + 3U) / 4U;
  
    while (((USBx_INEP(epnum)->DTXFSTS & USB_OTG_DTXFSTS_INEPTFSAV) >= len32b) &&
           (ep->xfer_count < ep->xfer_len) && (ep->xfer_len != 0U))
    {
      /* Write the FIFO */
      len = ep->xfer_len - ep->xfer_count;
  
      if (len > ep->maxpacket)
      {
        len = ep->maxpacket;
      }
      len32b = (len + 3U) / 4U;
  
      (void)USB_WritePacket(USBx, ep->xfer_buff, (uint8_t)epnum, (uint16_t)len,
                            (uint8_t)hpcd->Init.dma_enable);
  
      ep->xfer_buff  += len;
      ep->xfer_count += len;
    }
  
    if (ep->xfer_len <= ep->xfer_count)
    {
      fifoemptymsk = (uint32_t)(0x1UL << (epnum & EP_ADDR_MSK));
      USBx_DEVICE->DIEPEMPMSK &= ~fifoemptymsk;
    }
  
    return HAL_OK;
  }
  
  
  /**
    * @brief  process EP OUT transfer complete interrupt.
    * @param  hpcd PCD handle
    * @param  epnum endpoint number
    * @retval HAL status
    */
  static HAL_StatusTypeDef PCD_EP_OutXfrComplete_int(PCD_HandleTypeDef *hpcd, uint32_t epnum)
  {
    USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
    uint32_t USBx_BASE = (uint32_t)USBx;
    uint32_t gSNPSiD = *(__IO uint32_t *)(&USBx->CID + 0x1U);
    uint32_t DoepintReg = USBx_OUTEP(epnum)->DOEPINT;
  
    if (hpcd->Init.dma_enable == 1U)
    {
      if ((DoepintReg & USB_OTG_DOEPINT_STUP) == USB_OTG_DOEPINT_STUP) /* Class C */
      {
        /* StupPktRcvd = 1 this is a setup packet */
        if ((gSNPSiD > USB_OTG_CORE_ID_300A) &&
            ((DoepintReg & USB_OTG_DOEPINT_STPKTRX) == USB_OTG_DOEPINT_STPKTRX))
        {
          CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_STPKTRX);
        }
  
        /* Inform the upper layer that a setup packet is available */
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
        hpcd->SetupStageCallback(hpcd);
  #else
        HAL_PCD_SetupStageCallback(hpcd);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
  
        (void)USB_EP0_OutStart(hpcd->Instance, 1U, (uint8_t *)hpcd->Setup);
        CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_STUP);
      }
      else if ((DoepintReg & USB_OTG_DOEPINT_OTEPSPR) == USB_OTG_DOEPINT_OTEPSPR) /* Class E */
      {
        CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_OTEPSPR);
      }
      else if ((DoepintReg & (USB_OTG_DOEPINT_STUP | USB_OTG_DOEPINT_OTEPSPR)) == 0U)
      {
        /* StupPktRcvd = 1 this is a setup packet */
        if ((gSNPSiD > USB_OTG_CORE_ID_300A) &&
            ((DoepintReg & USB_OTG_DOEPINT_STPKTRX) == USB_OTG_DOEPINT_STPKTRX))
        {
          CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_STPKTRX);
        }
        else
        {
          /* out data packet received over EP0 */
          hpcd->OUT_ep[epnum].xfer_count =
            hpcd->OUT_ep[epnum].maxpacket -
            (USBx_OUTEP(epnum)->DOEPTSIZ & USB_OTG_DOEPTSIZ_XFRSIZ);
  
          hpcd->OUT_ep[epnum].xfer_buff += hpcd->OUT_ep[epnum].maxpacket;
  
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
          hpcd->DataOutStageCallback(hpcd, (uint8_t)epnum);
  #else
          HAL_PCD_DataOutStageCallback(hpcd, (uint8_t)epnum);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
  
          if ((epnum == 0U) && (hpcd->OUT_ep[epnum].xfer_len == 0U))
          {
            /* this is ZLP, so prepare EP0 for next setup */
            (void)USB_EP0_OutStart(hpcd->Instance, 1U, (uint8_t *)hpcd->Setup);
          }
        }
      }
      else
      {
        /* ... */
      }
    }
    else
    {
      if (gSNPSiD == USB_OTG_CORE_ID_310A)
      {
        /* StupPktRcvd = 1 this is a setup packet */
        if ((DoepintReg & USB_OTG_DOEPINT_STPKTRX) == USB_OTG_DOEPINT_STPKTRX)
        {
          CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_STPKTRX);
        }
        else
        {
          if ((DoepintReg & USB_OTG_DOEPINT_OTEPSPR) == USB_OTG_DOEPINT_OTEPSPR)
          {
            CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_OTEPSPR);
          }
  
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
          hpcd->DataOutStageCallback(hpcd, (uint8_t)epnum);
  #else
          HAL_PCD_DataOutStageCallback(hpcd, (uint8_t)epnum);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
        }
      }
      else
      {
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
        hpcd->DataOutStageCallback(hpcd, (uint8_t)epnum);
  #else
        HAL_PCD_DataOutStageCallback(hpcd, (uint8_t)epnum);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
      }
    }
  
    return HAL_OK;
  }
  
  
  /**
    * @brief  process EP OUT setup packet received interrupt.
    * @param  hpcd PCD handle
    * @param  epnum endpoint number
    * @retval HAL status
    */
  static HAL_StatusTypeDef PCD_EP_OutSetupPacket_int(PCD_HandleTypeDef *hpcd, uint32_t epnum)
  {
    USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
    uint32_t USBx_BASE = (uint32_t)USBx;
    uint32_t gSNPSiD = *(__IO uint32_t *)(&USBx->CID + 0x1U);
    uint32_t DoepintReg = USBx_OUTEP(epnum)->DOEPINT;
  
    if (hpcd->Init.dma_enable == 1U)
    {
      /* StupPktRcvd = 1 pending setup packet int */
      if ((gSNPSiD > USB_OTG_CORE_ID_300A) &&
          ((DoepintReg & USB_OTG_DOEPINT_STPKTRX) == USB_OTG_DOEPINT_STPKTRX))
      {
        CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_STPKTRX);
      }
    }
    else
    {
      if ((gSNPSiD == USB_OTG_CORE_ID_310A) &&
          ((DoepintReg & USB_OTG_DOEPINT_STPKTRX) == USB_OTG_DOEPINT_STPKTRX))
      {
        CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_STPKTRX);
      }
    }
  
    /* Inform the upper layer that a setup packet is available */
  #if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
    hpcd->SetupStageCallback(hpcd);
  #else
    HAL_PCD_SetupStageCallback(hpcd);
  #endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
  
    if ((gSNPSiD > USB_OTG_CORE_ID_300A) && (hpcd->Init.dma_enable == 1U))
    {
      (void)USB_EP0_OutStart(hpcd->Instance, 1U, (uint8_t *)hpcd->Setup);
    }
  
    return HAL_OK;
  }
  #endif /* defined (USB_OTG_FS) || defined (USB_OTG_HS) */
  
  
  /**
    * @}
    */
  #endif /* defined (USB_OTG_FS) || defined (USB_OTG_HS) */
  #endif /* HAL_PCD_MODULE_ENABLED */
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  