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/**

  ******************************************************************************

  * @file    stm32f1xx_hal_pcd_ex.c

  * @author  MCD Application Team

  * @brief   PCD Extended HAL module driver.

  *          This file provides firmware functions to manage the following

  *          functionalities of the USB Peripheral Controller:

  *           + Extended features functions

  *

  ******************************************************************************

  * @attention

  *

  * Copyright (c) 2016 STMicroelectronics.

  * All rights reserved.

  *

  * This software is licensed under terms that can be found in the LICENSE file

  * in the root directory of this software component.

  * If no LICENSE file comes with this software, it is provided AS-IS.

  *

  ******************************************************************************

  */

/* Includes ------------------------------------------------------------------*/

#include "stm32f1xx_hal.h"

/** @addtogroup STM32F1xx_HAL_Driver

  * @{

  */

/** @defgroup PCDEx PCDEx

  * @brief PCD Extended HAL module driver

  * @{

  */

#ifdef HAL_PCD_MODULE_ENABLED

#if defined (USB) || defined (USB_OTG_FS)

/* Private types -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

/* Private constants ---------------------------------------------------------*/

/* Private macros ------------------------------------------------------------*/

/* Private functions ---------------------------------------------------------*/

/* Exported functions --------------------------------------------------------*/

/** @defgroup PCDEx_Exported_Functions PCDEx Exported Functions

  * @{

  */

/** @defgroup PCDEx_Exported_Functions_Group1 Peripheral Control functions

  * @brief    PCDEx control functions

  *

@verbatim

 ===============================================================================

                 ##### Extended features functions #####

 ===============================================================================

    [..]  This section provides functions allowing to:

      (+) Update FIFO configuration

@endverbatim

  * @{

  */

#if defined (USB_OTG_FS)

/**

  * @brief  Set Tx FIFO

  * @param  hpcd PCD handle

  * @param  fifo The number of Tx fifo

  * @param  size Fifo size

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_PCDEx_SetTxFiFo(PCD_HandleTypeDef *hpcd, uint8_t fifo, uint16_t size)

{

  uint8_t i;

  uint32_t Tx_Offset;

  /*  TXn min size = 16 words. (n  : Transmit FIFO index)

      When a TxFIFO is not used, the Configuration should be as follows:

          case 1 :  n > m    and Txn is not used    (n,m  : Transmit FIFO indexes)

         --> Txm can use the space allocated for Txn.

         case2  :  n < m    and Txn is not used    (n,m  : Transmit FIFO indexes)

         --> Txn should be configured with the minimum space of 16 words

     The FIFO is used optimally when used TxFIFOs are allocated in the top

         of the FIFO.Ex: use EP1 and EP2 as IN instead of EP1 and EP3 as IN ones.

     When DMA is used 3n * FIFO locations should be reserved for internal DMA registers */

  Tx_Offset = hpcd->Instance->GRXFSIZ;

  if (fifo == 0U)

  {

    hpcd->Instance->DIEPTXF0_HNPTXFSIZ = ((uint32_t)size << 16) | Tx_Offset;

  }

  else

  {

    Tx_Offset += (hpcd->Instance->DIEPTXF0_HNPTXFSIZ) >> 16;

    for (i = 0U; i < (fifo - 1U); i++)

    {

      Tx_Offset += (hpcd->Instance->DIEPTXF[i] >> 16);

    }

    /* Multiply Tx_Size by 2 to get higher performance */

    hpcd->Instance->DIEPTXF[fifo - 1U] = ((uint32_t)size << 16) | Tx_Offset;

  }

  return HAL_OK;

}

/**

  * @brief  Set Rx FIFO

  * @param  hpcd PCD handle

  * @param  size Size of Rx fifo

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_PCDEx_SetRxFiFo(PCD_HandleTypeDef *hpcd, uint16_t size)

{

  hpcd->Instance->GRXFSIZ = size;

  return HAL_OK;

}

#endif /* defined (USB_OTG_FS) */

#if defined (USB)

/**

  * @brief  Configure PMA for EP

  * @param  hpcd  Device instance

  * @param  ep_addr endpoint address

  * @param  ep_kind endpoint Kind

  *                  USB_SNG_BUF: Single Buffer used

  *                  USB_DBL_BUF: Double Buffer used

  * @param  pmaadress: EP address in The PMA: In case of single buffer endpoint

  *                   this parameter is 16-bit value providing the address

  *                   in PMA allocated to endpoint.

  *                   In case of double buffer endpoint this parameter

  *                   is a 32-bit value providing the endpoint buffer 0 address

  *                   in the LSB part of 32-bit value and endpoint buffer 1 address

  *                   in the MSB part of 32-bit value.

  * @retval HAL status

  */

HAL_StatusTypeDef  HAL_PCDEx_PMAConfig(PCD_HandleTypeDef *hpcd, uint16_t ep_addr,

                                       uint16_t ep_kind, uint32_t pmaadress)

{

  PCD_EPTypeDef *ep;

  /* initialize ep structure*/

  if ((0x80U & ep_addr) == 0x80U)

  {

    ep = &hpcd->IN_ep[ep_addr & EP_ADDR_MSK];

  }

  else

  {

    ep = &hpcd->OUT_ep[ep_addr];

  }

  /* Here we check if the endpoint is single or double Buffer*/

  if (ep_kind == PCD_SNG_BUF)

  {

    /* Single Buffer */

    ep->doublebuffer = 0U;

    /* Configure the PMA */

    ep->pmaadress = (uint16_t)pmaadress;

  }

#if (USE_USB_DOUBLE_BUFFER == 1U)

  else /* USB_DBL_BUF */

  {

    /* Double Buffer Endpoint */

    ep->doublebuffer = 1U;

    /* Configure the PMA */

    ep->pmaaddr0 = (uint16_t)(pmaadress & 0xFFFFU);

    ep->pmaaddr1 = (uint16_t)((pmaadress & 0xFFFF0000U) >> 16);

  }

#endif /* (USE_USB_DOUBLE_BUFFER == 1U) */

  return HAL_OK;

}

/**

  * @brief  Software Device Connection,

  *         this function is not required by USB OTG FS peripheral, it is used

  *         only by USB Device FS peripheral.

  * @param  hpcd PCD handle

  * @param  state connection state (0 : disconnected / 1: connected)

  * @retval None

  */

__weak void HAL_PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state)

{

  /* Prevent unused argument(s) compilation warning */

  UNUSED(hpcd);

  UNUSED(state);

  /* NOTE : This function Should not be modified, when the callback is needed,

            the HAL_PCDEx_SetConnectionState could be implemented in the user file

   */

}

#endif /* defined (USB) */

/**

  * @brief  Send LPM message to user layer callback.

  * @param  hpcd PCD handle

  * @param  msg LPM message

  * @retval HAL status

  */

__weak void HAL_PCDEx_LPM_Callback(PCD_HandleTypeDef *hpcd, PCD_LPM_MsgTypeDef msg)

{

  /* Prevent unused argument(s) compilation warning */

  UNUSED(hpcd);

  UNUSED(msg);

  /* NOTE : This function should not be modified, when the callback is needed,

            the HAL_PCDEx_LPM_Callback could be implemented in the user file

   */

}

/**

  * @brief  Send BatteryCharging message to user layer callback.

  * @param  hpcd PCD handle

  * @param  msg LPM message

  * @retval HAL status

  */

__weak void HAL_PCDEx_BCD_Callback(PCD_HandleTypeDef *hpcd, PCD_BCD_MsgTypeDef msg)

{

  /* Prevent unused argument(s) compilation warning */

  UNUSED(hpcd);

  UNUSED(msg);

  /* NOTE : This function should not be modified, when the callback is needed,

            the HAL_PCDEx_BCD_Callback could be implemented in the user file

   */

}

/**

  * @}

  */

/**

  * @}

  */

#endif /* defined (USB) || defined (USB_OTG_FS) */

#endif /* HAL_PCD_MODULE_ENABLED */

/**

  * @}

  */

/**

  * @}

  */