/**
  ******************************************************************************
  * @file    stm32f1xx_hal_pcd_ex.c
  * @author  MCD Application Team
  * @version V1.1.1
  * @date    12-May-2017
  * @brief   Extended PCD HAL module driver.
  *          This file provides firmware functions to manage the following 
  *          functionalities of the USB Peripheral Controller:
  *           + Extended features functions: Update FIFO configuration, 
  *           PMA configuration for EPs  
  *
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"

/** @addtogroup STM32F1xx_HAL_Driver
  * @{
  */

#ifdef HAL_PCD_MODULE_ENABLED

#if defined(STM32F102x6) || defined(STM32F102xB) || \
    defined(STM32F103x6) || defined(STM32F103xB) || \
    defined(STM32F103xE) || defined(STM32F103xG) || \
    defined(STM32F105xC) || defined(STM32F107xC)


/** @defgroup PCDEx PCDEx
  * @brief PCD Extended HAL module driver
  * @{
  */


/* 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 Peripheral Control functions #####
 ===============================================================================
    [..]  This section provides functions allowing to:
      (+) Update FIFO (USB_OTG_FS)
      (+) Update PMA configuration (USB)

@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 index = 0;
  uint32_t Tx_Offset = 0U;
  
  /*  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 = (size << 16U) | Tx_Offset;
  }
  else
  {
    Tx_Offset += (hpcd->Instance->DIEPTXF0_HNPTXFSIZ) >> 16U;
    for(index = 0; index < (fifo - 1); index++)
    {
      Tx_Offset += (hpcd->Instance->DIEPTXF[index] >> 16U);
    }
    
    /* Multiply Tx_Size by 2 to get higher performance */
    hpcd->Instance->DIEPTXF[fifo - 1U] = (size << 16U) | 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 /* 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 = NULL;
  
  /* initialize ep structure*/
  if ((ep_addr & 0x80U) == 0x80U)
  {
    ep = &hpcd->IN_ep[ep_addr & 0x7FU];
  }
  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 te PMA*/
    ep->pmaadress = (uint16_t)pmaadress;
  }
  else /*USB_DBL_BUF*/
  {
    /*Double Buffer Endpoint*/
    ep->doublebuffer = 1U;
    /*Configure the PMA*/
    ep->pmaaddr0 =  pmaadress & 0x0000FFFFU;
    ep->pmaaddr1 =  (pmaadress & 0xFFFF0000U) >> 16U;
  }
  
  return HAL_OK; 
}
#endif /* USB */
/**
  * @}
  */

/** @defgroup PCDEx_Exported_Functions_Group2 Peripheral State functions
  * @brief    Manage device connection state  
  * @{
  */
/**
  * @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 /* STM32F102x6 || STM32F102xB || */
       /* STM32F103x6 || STM32F103xB || */
       /* STM32F103xE || STM32F103xG || */
       /* STM32F105xC || STM32F107xC    */

#endif /* HAL_PCD_MODULE_ENABLED */


/**
  * @}
  */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/