text: /**
    ******************************************************************************
    * @file    stm32f4xx_hal_pcd_ex.c
    * @author  MCD Application Team
    * @version V1.4.0
    * @date    14-August-2015
    * @brief   PCD HAL module driver.
    *          This file provides firmware functions to manage the following 
    *          functionalities of the USB Peripheral Controller:
    *           + Extended features functions
    *
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; COPYRIGHT(c) 2015 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
    * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    *
    ******************************************************************************
    */ 
  
  /* Includes ------------------------------------------------------------------*/
  #include "stm32f4xx_hal.h"
  
  /** @addtogroup STM32F4xx_HAL_Driver
    * @{
    */
  
  /** @defgroup PCDEx PCDEx
    * @brief PCD Extended HAL module driver
    * @{
    */
  #ifdef HAL_PCD_MODULE_ENABLED
  #if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx) || defined(STM32F417xx) || \
      defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) || \
      defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F411xE) || defined(STM32F446xx) || \
      defined(STM32F469xx) || defined(STM32F479xx) 
  /* Private types -------------------------------------------------------------*/
  /* Private variables ---------------------------------------------------------*/
  /* Private constants ---------------------------------------------------------*/
  /* Private macros ------------------------------------------------------------*/
  /* Private functions ---------------------------------------------------------*/
  /* Exported functions --------------------------------------------------------*/
  
  /** @defgroup PCDEx_Exported_Functions PCD Extended 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
    * @{
    */
  
  /**
    * @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 = 0;
    uint32_t Tx_Offset = 0;
  
    /*  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 == 0)
    {
      hpcd->Instance->DIEPTXF0_HNPTXFSIZ = (uint32_t)(((uint32_t)size << 16) | Tx_Offset);
    }
    else
    {
      Tx_Offset += (hpcd->Instance->DIEPTXF0_HNPTXFSIZ) >> 16;
      for (i = 0; i < (fifo - 1); i++)
      {
        Tx_Offset += (hpcd->Instance->DIEPTXF[i] >> 16);
      }
      
      /* Multiply Tx_Size by 2 to get higher performance */
      hpcd->Instance->DIEPTXF[fifo - 1] = (uint32_t)(((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;
  }
  
  #if defined(STM32F446xx) || defined(STM32F469xx) || defined(STM32F479xx) 
  /**
    * @brief  Activate LPM feature
    * @param  hpcd: PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCDEx_ActivateLPM(PCD_HandleTypeDef *hpcd)
  {
    USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;  
    
    hpcd->lpm_active = ENABLE;
    hpcd->LPM_State = LPM_L0;
    USBx->GINTMSK |= USB_OTG_GINTMSK_LPMINTM;
    USBx->GLPMCFG |= (USB_OTG_GLPMCFG_LPMEN | USB_OTG_GLPMCFG_LPMACK | USB_OTG_GLPMCFG_ENBESL);
    
    return HAL_OK;  
  }
  
  /**
    * @brief  Deactivate LPM feature.
    * @param  hpcd: PCD handle
    * @retval HAL status
    */
  HAL_StatusTypeDef HAL_PCDEx_DeActivateLPM(PCD_HandleTypeDef *hpcd)
  {
    USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;  
    
    hpcd->lpm_active = DISABLE;
    USBx->GINTMSK &= ~USB_OTG_GINTMSK_LPMINTM;
    USBx->GLPMCFG &= ~(USB_OTG_GLPMCFG_LPMEN | USB_OTG_GLPMCFG_LPMACK | USB_OTG_GLPMCFG_ENBESL);
    
    return HAL_OK;  
  }
  
  /**
    * @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)
  {
  }
  #endif /* STM32F446xx || STM32F469xx || STM32F479xx  */
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  #endif /* STM32F405xx || STM32F415xx || STM32F407xx || STM32F417xx || STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx ||
            STM32F401xC || STM32F401xE || STM32F411xE || STM32F446xx || STM32F469xx || STM32F479xx  */
  #endif /* HAL_PCD_MODULE_ENABLED */
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  