text: /**
    ******************************************************************************
    * @file    stm32f3xx_hal_pcd.h
    * @author  MCD Application Team
    * @version V1.2.0
    * @date    13-November-2015
    * @brief   Header file of PCD HAL module.
    ******************************************************************************
    * @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.
    *
    ******************************************************************************
    */ 
  
  /* Define to prevent recursive inclusion -------------------------------------*/
  #ifndef __STM32F3xx_HAL_PCD_H
  #define __STM32F3xx_HAL_PCD_H
  
  #ifdef __cplusplus
   extern "C" {
  #endif
  
  #if defined(STM32F302xE) || defined(STM32F303xE) || \
      defined(STM32F302xC) || defined(STM32F303xC) || \
      defined(STM32F302x8)                         || \
      defined(STM32F373xC)
  
  /* Includes ------------------------------------------------------------------*/
  #include "stm32f3xx_hal_def.h"
  
  /** @addtogroup STM32F3xx_HAL_Driver
    * @{
    */
  
  /** @addtogroup PCD
    * @{
    */ 
  
  /* Exported types ------------------------------------------------------------*/ 
  /** @defgroup PCD_Exported_Types PCD Exported Types
    * @{
    */
  
  /** 
    * @brief  PCD State structure definition  
    */  
  typedef enum 
  {
    HAL_PCD_STATE_RESET   = 0x00,
    HAL_PCD_STATE_READY   = 0x01,
    HAL_PCD_STATE_ERROR   = 0x02,
    HAL_PCD_STATE_BUSY    = 0x03,
    HAL_PCD_STATE_TIMEOUT = 0x04
  } PCD_StateTypeDef;
  
  /**
    * @brief  PCD double buffered endpoint direction
    */
  typedef enum
  {
    PCD_EP_DBUF_OUT,
    PCD_EP_DBUF_IN,
    PCD_EP_DBUF_ERR,
  }PCD_EP_DBUF_DIR;
  
  /**
    * @brief  PCD endpoint buffer number 
    */
  typedef enum 
  {
    PCD_EP_NOBUF,
    PCD_EP_BUF0,
    PCD_EP_BUF1
  }PCD_EP_BUF_NUM;  
  
  /** 
    * @brief  PCD Initialization Structure definition  
    */
  typedef struct
  {
    uint32_t dev_endpoints;        /*!< Device Endpoints number.
                                        This parameter depends on the used USB core.   
                                        This parameter must be a number between Min_Data = 1 and Max_Data = 15 */    
  
    uint32_t speed;                /*!< USB Core speed.
                                        This parameter can be any value of @ref PCD_Core_Speed                 */        
                               
    uint32_t ep0_mps;              /*!< Set the Endpoint 0 Max Packet size. 
                                        This parameter can be any value of @ref PCD_EP0_MPS                    */              
                         
    uint32_t phy_itface;           /*!< Select the used PHY interface.
                                        This parameter can be any value of @ref PCD_Core_PHY                   */ 
                                  
    uint32_t Sof_enable;           /*!< Enable or disable the output of the SOF signal.                         
                                        This parameter can be set to ENABLE or DISABLE                      */
    
    uint32_t low_power_enable;     /*!< Enable or disable Low Power mode                                      
                                        This parameter can be set to ENABLE or DISABLE                      */
    
    uint32_t lpm_enable;           /*!< Enable or disable the Link Power Management .                                  
                                        This parameter can be set to ENABLE or DISABLE                      */
  
    uint32_t battery_charging_enable; /*!< Enable or disable Battery charging.                                  
                                        This parameter can be set to ENABLE or DISABLE                      */                                    
                                  
  }PCD_InitTypeDef;
  
  typedef struct
  {
    uint8_t   num;            /*!< Endpoint number
                                  This parameter must be a number between Min_Data = 1 and Max_Data = 15    */ 
                                  
    uint8_t   is_in;          /*!< Endpoint direction
                                  This parameter must be a number between Min_Data = 0 and Max_Data = 1     */ 
    
    uint8_t   is_stall;       /*!< Endpoint stall condition
                                  This parameter must be a number between Min_Data = 0 and Max_Data = 1     */ 
    
    uint8_t   type;           /*!< Endpoint type
                                   This parameter can be any value of @ref PCD_EP_Type                      */ 
                                  
    uint16_t  pmaadress;      /*!< PMA Address
                                   This parameter can be any value between Min_addr = 0 and Max_addr = 1K   */ 
    
    
    uint16_t  pmaaddr0;       /*!< PMA Address0
                                   This parameter can be any value between Min_addr = 0 and Max_addr = 1K   */   
    
    
    uint16_t  pmaaddr1;        /*!< PMA Address1
                                   This parameter can be any value between Min_addr = 0 and Max_addr = 1K   */   
    
    
    uint8_t   doublebuffer;    /*!< Double buffer enable
                                   This parameter can be 0 or 1                                             */    
                                  
    uint32_t  maxpacket;      /*!< Endpoint Max packet size
                                   This parameter must be a number between Min_Data = 0 and Max_Data = 64KB */
  
    uint8_t   *xfer_buff;     /*!< Pointer to transfer buffer                                               */
                                  
    
    uint32_t  xfer_len;       /*!< Current transfer length                                                  */
    
    uint32_t  xfer_count;     /*!< Partial transfer length in case of multi packet transfer                 */
  
  }PCD_EPTypeDef;
  
  typedef   USB_TypeDef PCD_TypeDef; 
  
  /** 
    * @brief  PCD Handle Structure definition  
    */ 
  typedef struct
  {
    PCD_TypeDef             *Instance;   /*!< Register base address              */ 
    PCD_InitTypeDef         Init;       /*!< PCD required parameters            */
    __IO uint8_t            USB_Address; /*!< USB Address            */  
    PCD_EPTypeDef           IN_ep[15];  /*!< IN endpoint parameters             */
    PCD_EPTypeDef           OUT_ep[15]; /*!< OUT endpoint parameters            */ 
    HAL_LockTypeDef         Lock;       /*!< PCD peripheral status              */
    __IO PCD_StateTypeDef   State;      /*!< PCD communication state            */
    uint32_t                Setup[12];  /*!< Setup packet buffer                */
    void                    *pData;      /*!< Pointer to upper stack Handler     */    
    
  } PCD_HandleTypeDef;
  
  /**
    * @}
    */ 
   
  /* Include PCD HAL Extension module */
  #include "stm32f3xx_hal_pcd_ex.h"  
      
  /* Exported constants --------------------------------------------------------*/
  /** @defgroup PCD_Exported_Constants PCD Exported Constants
    * @{
    */
  
  /** @defgroup PCD_Core_Speed PCD Core Speed
    * @{
    */
  #define PCD_SPEED_HIGH               0 /* Not Supported */
  #define PCD_SPEED_FULL               2
  /**
    * @}
    */
    
    /** @defgroup PCD_Core_PHY PCD Core PHY
    * @{
    */
  #define PCD_PHY_EMBEDDED             2
  /**
    * @}
    */
  /**
    * @}
    */
  
  /* Exported macros -----------------------------------------------------------*/
  /** @defgroup PCD_Exported_Macros PCD Exported Macros
   *  @brief macros to handle interrupts and specific clock configurations
    * @{
    */
  #define __HAL_PCD_GET_FLAG(__HANDLE__, __INTERRUPT__)      ((((__HANDLE__)->Instance->ISTR) & (__INTERRUPT__)) == (__INTERRUPT__))
  #define __HAL_PCD_CLEAR_FLAG(__HANDLE__, __INTERRUPT__)    (((__HANDLE__)->Instance->ISTR) &= ~(__INTERRUPT__))
  
  #define __HAL_USB_WAKEUP_EXTI_ENABLE_IT()                 EXTI->IMR |= USB_WAKEUP_EXTI_LINE
  #define __HAL_USB_WAKEUP_EXTI_DISABLE_IT()                EXTI->IMR &= ~(USB_WAKEUP_EXTI_LINE)
  #define __HAL_USB_EXTI_GENERATE_SWIT(__EXTILINE__) (EXTI->SWIER |= (__EXTILINE__))
  
  #define __HAL_USB_WAKEUP_EXTI_GET_FLAG()                  EXTI->PR & (USB_WAKEUP_EXTI_LINE)
  #define __HAL_USB_WAKEUP_EXTI_CLEAR_FLAG()                EXTI->PR = USB_WAKEUP_EXTI_LINE
  
  #define __HAL_USB_WAKEUP_EXTI_ENABLE_RISING_EDGE()   do {\
                                                       EXTI->FTSR &= ~(USB_WAKEUP_EXTI_LINE);\
                                                       EXTI->RTSR |= USB_WAKEUP_EXTI_LINE;\
                                                     } while(0)
  
  #define __HAL_USB_WAKEUP_EXTI_ENABLE_FALLING_EDGE()  do {\
                                                       EXTI->FTSR |= (USB_WAKEUP_EXTI_LINE);\
                                                       EXTI->RTSR &= ~(USB_WAKEUP_EXTI_LINE);\
                                                     } while(0)
  
  #define __HAL_USB_WAKEUP_EXTI_ENABLE_RISING_FALLING_EDGE() do {\
                                                       EXTI->RTSR &= ~(USB_WAKEUP_EXTI_LINE);\
                                                       EXTI->FTSR &= ~(USB_WAKEUP_EXTI_LINE);\
                                                       EXTI->RTSR |= USB_WAKEUP_EXTI_LINE;\
                                                       EXTI->FTSR |= USB_WAKEUP_EXTI_LINE;\
                                                     } while(0)
  /**
    * @}
    */                                                      
  
  /* Exported functions --------------------------------------------------------*/
  /** @addtogroup PCD_Exported_Functions PCD Exported Functions
    * @{
    */
  
  /* Initialization/de-initialization functions  ********************************/
  /** @addtogroup PCD_Exported_Functions_Group1 Initialization and de-initialization functions
    * @{
    */
  HAL_StatusTypeDef HAL_PCD_Init(PCD_HandleTypeDef *hpcd);
  HAL_StatusTypeDef HAL_PCD_DeInit (PCD_HandleTypeDef *hpcd);
  void HAL_PCD_MspInit(PCD_HandleTypeDef *hpcd);
  void HAL_PCD_MspDeInit(PCD_HandleTypeDef *hpcd);
  /**
    * @}
    */
  
  /* I/O operation functions  ***************************************************/
  /* Non-Blocking mode: Interrupt */
  /** @addtogroup PCD_Exported_Functions_Group2 IO operation functions
    * @{
    */
  HAL_StatusTypeDef HAL_PCD_Start(PCD_HandleTypeDef *hpcd);
  HAL_StatusTypeDef HAL_PCD_Stop(PCD_HandleTypeDef *hpcd);
  void HAL_PCD_IRQHandler(PCD_HandleTypeDef *hpcd);
  
  void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum);
  void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum);
  void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd);
  void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd);
  void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd);
  void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd);
  void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd);
  void HAL_PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum);
  void HAL_PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum);
  void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd);
  void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd);
  /**
    * @}
    */
  
  /* Peripheral Control functions  **********************************************/
  /** @addtogroup PCD_Exported_Functions_Group3 Peripheral Control functions
    * @{
    */
  HAL_StatusTypeDef HAL_PCD_DevConnect(PCD_HandleTypeDef *hpcd);
  HAL_StatusTypeDef HAL_PCD_DevDisconnect(PCD_HandleTypeDef *hpcd);
  HAL_StatusTypeDef HAL_PCD_SetAddress(PCD_HandleTypeDef *hpcd, uint8_t address);
  HAL_StatusTypeDef HAL_PCD_EP_Open(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint16_t ep_mps, uint8_t ep_type);
  HAL_StatusTypeDef HAL_PCD_EP_Close(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
  HAL_StatusTypeDef HAL_PCD_EP_Receive(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len);
  HAL_StatusTypeDef HAL_PCD_EP_Transmit(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len);
  uint16_t          HAL_PCD_EP_GetRxCount(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
  HAL_StatusTypeDef HAL_PCD_EP_SetStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
  HAL_StatusTypeDef HAL_PCD_EP_ClrStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
  HAL_StatusTypeDef HAL_PCD_EP_Flush(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
  HAL_StatusTypeDef HAL_PCD_ActivateRemoteWakeup(PCD_HandleTypeDef *hpcd);
  HAL_StatusTypeDef HAL_PCD_DeActivateRemoteWakeup(PCD_HandleTypeDef *hpcd);
  /**
    * @}
    */
  
  /* Peripheral State functions  ************************************************/
  /** @addtogroup PCD_Exported_Functions_Group4 Peripheral State functions
    * @{
    */
  PCD_StateTypeDef HAL_PCD_GetState(PCD_HandleTypeDef *hpcd);
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /* Private constants ---------------------------------------------------------*/
  /** @defgroup PCD_Private_Constants PCD Private Constants
    * @{
    */
  /** @defgroup USB_EXTI_Line_Interrupt USB EXTI line interrupt
    * @{
    */
  #define  USB_WAKEUP_EXTI_LINE              ((uint32_t)EXTI_IMR_MR18)  /*!< External interrupt line 18 Connected to the USB FS EXTI Line */
  /**
    * @}
    */
  
  /** @defgroup PCD_EP0_MPS PCD EP0 MPS
    * @{
    */
  #define DEP0CTL_MPS_64                         0
  #define DEP0CTL_MPS_32                         1
  #define DEP0CTL_MPS_16                         2
  #define DEP0CTL_MPS_8                          3
  
  #define PCD_EP0MPS_64                          DEP0CTL_MPS_64
  #define PCD_EP0MPS_32                          DEP0CTL_MPS_32
  #define PCD_EP0MPS_16                          DEP0CTL_MPS_16
  #define PCD_EP0MPS_08                          DEP0CTL_MPS_8 
  /**
    * @}
    */ 
  
  /** @defgroup PCD_EP_Type PCD EP Type
    * @{
    */
  #define PCD_EP_TYPE_CTRL                       0
  #define PCD_EP_TYPE_ISOC                       1
  #define PCD_EP_TYPE_BULK                       2
  #define PCD_EP_TYPE_INTR                       3
  /**
    * @}
    */ 
  
  /** @defgroup PCD_ENDP PCD ENDP
    * @{
    */
  #define PCD_ENDP0                              ((uint8_t)0)
  #define PCD_ENDP1                              ((uint8_t)1)
  #define PCD_ENDP2                              ((uint8_t)2)
  #define PCD_ENDP3                              ((uint8_t)3)
  #define PCD_ENDP4                              ((uint8_t)4)
  #define PCD_ENDP5                              ((uint8_t)5)
  #define PCD_ENDP6                              ((uint8_t)6)
  #define PCD_ENDP7                              ((uint8_t)7)
  /**
    * @}
    */
  
  /** @defgroup PCD_ENDP_Kind PCD Endpoint Kind
    * @{
    */
  #define PCD_SNG_BUF                            0
  #define PCD_DBL_BUF                            1
  /**
    * @}
    */
  
  /**
    * @}
    */                                                    
  /* Internal macros -----------------------------------------------------------*/
  
  /* Private macros ------------------------------------------------------------*/
  /** @addtogroup PCD_Private_Macros PCD Private Macros
    * @{
    */
  
  /* SetENDPOINT */
  #define PCD_SET_ENDPOINT(USBx, bEpNum,wRegValue)  (*(&(USBx)->EP0R + (bEpNum) * 2)= (uint16_t)(wRegValue))
  
  /* GetENDPOINT */
  #define PCD_GET_ENDPOINT(USBx, bEpNum)        (*(&(USBx)->EP0R + (bEpNum) * 2))
  
  
  
  /**
    * @brief  sets the type in the endpoint register(bits EP_TYPE[1:0])
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @param  wType: Endpoint Type.
    * @retval None
    */
  #define PCD_SET_EPTYPE(USBx, bEpNum,wType) (PCD_SET_ENDPOINT((USBx), (bEpNum),\
                                    ((PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EP_T_MASK) | (wType) )))
  
  /**
    * @brief  gets the type in the endpoint register(bits EP_TYPE[1:0])
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval Endpoint Type
    */
  #define PCD_GET_EPTYPE(USBx, bEpNum) (PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EP_T_FIELD)
  
  
  /**
    * @brief free buffer used from the application realizing it to the line
            toggles bit SW_BUF in the double buffered endpoint register
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @param  bDir: Direction
    * @retval None
    */
  #define PCD_FreeUserBuffer(USBx, bEpNum, bDir)\
  {\
    if ((bDir) == PCD_EP_DBUF_OUT)\
    { /* OUT double buffered endpoint */\
      PCD_TX_DTOG((USBx), (bEpNum));\
    }\
    else if ((bDir) == PCD_EP_DBUF_IN)\
    { /* IN double buffered endpoint */\
      PCD_RX_DTOG((USBx), (bEpNum));\
    }\
  }
  
  /**
    * @brief gets direction of the double buffered endpoint
    * @param   USBx: USB peripheral instance register address.
    * @param   bEpNum: Endpoint Number.
    * @retval EP_DBUF_OUT, EP_DBUF_IN,
    *         EP_DBUF_ERR if the endpoint counter not yet programmed.
    */
  #define PCD_GET_DB_DIR(USBx, bEpNum)\
  {\
    if ((uint16_t)(*PCD_EP_RX_CNT((USBx), (bEpNum)) & 0xFC00) != 0)\
      return(PCD_EP_DBUF_OUT);\
    else if (((uint16_t)(*PCD_EP_TX_CNT((USBx), (bEpNum))) & 0x03FF) != 0)\
      return(PCD_EP_DBUF_IN);\
    else\
      return(PCD_EP_DBUF_ERR);\
  }
  
  /**
    * @brief  sets the status for tx transfer (bits STAT_TX[1:0]).
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @param  wState: new state
    * @retval None
    */
  #define PCD_SET_EP_TX_STATUS(USBx, bEpNum, wState) {\
     register uint16_t _wRegVal;       \
     \
      _wRegVal = PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPTX_DTOGMASK;\
     /* toggle first bit ? */     \
     if((USB_EPTX_DTOG1 & (wState))!= 0)      \
       _wRegVal ^= USB_EPTX_DTOG1;        \
     /* toggle second bit ?  */         \
     if((USB_EPTX_DTOG2 & (wState))!= 0)      \
       _wRegVal ^= USB_EPTX_DTOG2;        \
     PCD_SET_ENDPOINT((USBx), (bEpNum), (_wRegVal | USB_EP_CTR_RX|USB_EP_CTR_TX));    \
    } /* PCD_SET_EP_TX_STATUS */
  
  /**
    * @brief  sets the status for rx transfer (bits STAT_TX[1:0])
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @param  wState: new state
    * @retval None
    */
  #define PCD_SET_EP_RX_STATUS(USBx, bEpNum,wState) {\
      register uint16_t _wRegVal;   \
      \
      _wRegVal = PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPRX_DTOGMASK;\
      /* toggle first bit ? */  \
      if((USB_EPRX_DTOG1 & (wState))!= 0) \
        _wRegVal ^= USB_EPRX_DTOG1;  \
      /* toggle second bit ? */  \
      if((USB_EPRX_DTOG2 & (wState))!= 0) \
        _wRegVal ^= USB_EPRX_DTOG2;  \
      PCD_SET_ENDPOINT((USBx), (bEpNum), (_wRegVal | USB_EP_CTR_RX|USB_EP_CTR_TX)); \
    } /* PCD_SET_EP_RX_STATUS */
  
  /**
    * @brief  sets the status for rx & tx (bits STAT_TX[1:0] & STAT_RX[1:0])
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @param  wStaterx: new state.
    * @param  wStatetx: new state.
    * @retval None
    */
  #define PCD_SET_EP_TXRX_STATUS(USBx,bEpNum,wStaterx,wStatetx) {\
      register uint32_t _wRegVal;   \
      \
      _wRegVal = PCD_GET_ENDPOINT((USBx), (bEpNum)) & (USB_EPRX_DTOGMASK |USB_EPTX_STAT) ;\
      /* toggle first bit ? */  \
      if((USB_EPRX_DTOG1 & ((wStaterx)))!= 0) \
        _wRegVal ^= USB_EPRX_DTOG1;  \
      /* toggle second bit ? */  \
      if((USB_EPRX_DTOG2 & (wStaterx))!= 0) \
        _wRegVal ^= USB_EPRX_DTOG2;  \
      /* toggle first bit ? */     \
      if((USB_EPTX_DTOG1 & (wStatetx))!= 0)      \
        _wRegVal ^= USB_EPTX_DTOG1;        \
      /* toggle second bit ?  */         \
      if((USB_EPTX_DTOG2 & (wStatetx))!= 0)      \
        _wRegVal ^= USB_EPTX_DTOG2;        \
      PCD_SET_ENDPOINT((USBx), (bEpNum), _wRegVal | USB_EP_CTR_RX|USB_EP_CTR_TX);    \
    } /* PCD_SET_EP_TXRX_STATUS */
  
  /**
    * @brief  gets the status for tx/rx transfer (bits STAT_TX[1:0]
    *         /STAT_RX[1:0])
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval status
    */
  #define PCD_GET_EP_TX_STATUS(USBx, bEpNum) ((uint16_t)PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPTX_STAT)
  
  #define PCD_GET_EP_RX_STATUS(USBx, bEpNum) ((uint16_t)PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPRX_STAT)
  
  /**
    * @brief  sets directly the VALID tx/rx-status into the endpoint register
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval None
    */
  #define PCD_SET_EP_TX_VALID(USBx, bEpNum)     (PCD_SET_EP_TX_STATUS((USBx), (bEpNum), USB_EP_TX_VALID))
  
  #define PCD_SET_EP_RX_VALID(USBx, bEpNum)     (PCD_SET_EP_RX_STATUS((USBx), (bEpNum), USB_EP_RX_VALID))
  
  /**
    * @brief  checks stall condition in an endpoint.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval TRUE = endpoint in stall condition.
    */
  #define PCD_GET_EP_TX_STALL_STATUS(USBx, bEpNum) (PCD_GET_EP_TX_STATUS((USBx), (bEpNum)) \
                                     == USB_EP_TX_STALL)
  #define PCD_GET_EP_RX_STALL_STATUS(USBx, bEpNum) (PCD_GET_EP_RX_STATUS((USBx), (bEpNum)) \
                                     == USB_EP_RX_STALL)
  
  /**
    * @brief  set & clear EP_KIND bit.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval None
    */
  #define PCD_SET_EP_KIND(USBx, bEpNum)    (PCD_SET_ENDPOINT((USBx), (bEpNum), \
                                  (USB_EP_CTR_RX|USB_EP_CTR_TX|((PCD_GET_ENDPOINT((USBx), (bEpNum)) | USB_EP_KIND) & USB_EPREG_MASK))))
  #define PCD_CLEAR_EP_KIND(USBx, bEpNum)  (PCD_SET_ENDPOINT((USBx), (bEpNum), \
                                  (USB_EP_CTR_RX|USB_EP_CTR_TX|(PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPKIND_MASK))))
  
  /**
    * @brief  Sets/clears directly STATUS_OUT bit in the endpoint register.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval None
    */
  #define PCD_SET_OUT_STATUS(USBx, bEpNum)    PCD_SET_EP_KIND((USBx), (bEpNum))
  #define PCD_CLEAR_OUT_STATUS(USBx, bEpNum)  PCD_CLEAR_EP_KIND((USBx), (bEpNum))
  
  /**
    * @brief  Sets/clears directly EP_KIND bit in the endpoint register.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval None
    */
  #define PCD_SET_EP_DBUF(USBx, bEpNum)   PCD_SET_EP_KIND((USBx), (bEpNum))
  #define PCD_CLEAR_EP_DBUF(USBx, bEpNum) PCD_CLEAR_EP_KIND((USBx), (bEpNum))
  
  /**
    * @brief  Clears bit CTR_RX / CTR_TX in the endpoint register.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval None
    */
  #define PCD_CLEAR_RX_EP_CTR(USBx, bEpNum)   (PCD_SET_ENDPOINT((USBx), (bEpNum),\
                                     PCD_GET_ENDPOINT((USBx), (bEpNum)) & 0x7FFF & USB_EPREG_MASK))
  #define PCD_CLEAR_TX_EP_CTR(USBx, bEpNum)   (PCD_SET_ENDPOINT((USBx), (bEpNum),\
                                     PCD_GET_ENDPOINT((USBx), (bEpNum)) & 0xFF7F & USB_EPREG_MASK))
  
  /**
    * @brief  Toggles DTOG_RX / DTOG_TX bit in the endpoint register.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval None
    */
  #define PCD_RX_DTOG(USBx, bEpNum)    (PCD_SET_ENDPOINT((USBx), (bEpNum), \
                                     USB_EP_CTR_RX|USB_EP_CTR_TX|USB_EP_DTOG_RX | (PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPREG_MASK)))
  #define PCD_TX_DTOG(USBx, bEpNum)    (PCD_SET_ENDPOINT((USBx), (bEpNum), \
                                     USB_EP_CTR_RX|USB_EP_CTR_TX|USB_EP_DTOG_TX | (PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPREG_MASK)))
  
  /**
    * @brief  Clears DTOG_RX / DTOG_TX bit in the endpoint register.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval None
    */
  #define PCD_CLEAR_RX_DTOG(USBx, bEpNum)  if((PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EP_DTOG_RX) != 0)\
      PCD_RX_DTOG((USBx), (bEpNum))
  #define PCD_CLEAR_TX_DTOG(USBx, bEpNum)  if((PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EP_DTOG_TX) != 0)\
      PCD_TX_DTOG((USBx), (bEpNum))
        
  /**
    * @brief  Sets address in an endpoint register.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @param  bAddr: Address.
    * @retval None
    */
  #define PCD_SET_EP_ADDRESS(USBx, bEpNum,bAddr) PCD_SET_ENDPOINT((USBx), (bEpNum),\
      USB_EP_CTR_RX|USB_EP_CTR_TX|(PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPREG_MASK) | (bAddr))
  
  /**
    * @brief  Gets address in an endpoint register.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval None
    */
  #define PCD_GET_EP_ADDRESS(USBx, bEpNum) ((uint8_t)(PCD_GET_ENDPOINT((USBx), (bEpNum)) & USB_EPADDR_FIELD))
  
  /**
    * @brief  sets address of the tx/rx buffer.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @param  wAddr: address to be set (must be word aligned).
    * @retval None
    */
  #define PCD_SET_EP_TX_ADDRESS(USBx, bEpNum,wAddr) (*PCD_EP_TX_ADDRESS((USBx), (bEpNum)) = (((wAddr) >> 1) << 1))
  #define PCD_SET_EP_RX_ADDRESS(USBx, bEpNum,wAddr) (*PCD_EP_RX_ADDRESS((USBx), (bEpNum)) = (((wAddr) >> 1) << 1))
  
  /**
    * @brief  Gets address of the tx/rx buffer.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval address of the buffer.
    */
  #define PCD_GET_EP_TX_ADDRESS(USBx, bEpNum) ((uint16_t)*PCD_EP_TX_ADDRESS((USBx), (bEpNum)))
  #define PCD_GET_EP_RX_ADDRESS(USBx, bEpNum) ((uint16_t)*PCD_EP_RX_ADDRESS((USBx), (bEpNum)))
  
  /**
    * @brief  Sets counter of rx buffer with no. of blocks.
    * @param  dwReg: Register
    * @param  wCount: Counter.
    * @param  wNBlocks: no. of Blocks.
    * @retval None
    */
  #define PCD_CALC_BLK32(dwReg,wCount,wNBlocks) {\
      (wNBlocks) = (wCount) >> 5;\
      if(((wCount) & 0x1f) == 0)\
        (wNBlocks)--;\
      *pdwReg = (uint16_t)(((wNBlocks) << 10) | 0x8000);\
    }/* PCD_CALC_BLK32 */
  
  #define PCD_CALC_BLK2(dwReg,wCount,wNBlocks) {\
      (wNBlocks) = (wCount) >> 1;\
      if(((wCount) & 0x1) != 0)\
        (wNBlocks)++;\
      *pdwReg = (uint16_t)((wNBlocks) << 10);\
    }/* PCD_CALC_BLK2 */
  
  #define PCD_SET_EP_CNT_RX_REG(dwReg,wCount)  {\
      uint16_t wNBlocks;\
      if((wCount) > 62){PCD_CALC_BLK32((dwReg),(wCount),wNBlocks);}\
      else {PCD_CALC_BLK2((dwReg),(wCount),wNBlocks);}\
    }/* PCD_SET_EP_CNT_RX_REG */
  
  #define PCD_SET_EP_RX_DBUF0_CNT(USBx, bEpNum,wCount) {\
      uint32_t *pdwReg = PCD_EP_TX_CNT(USBx, bEpNum); \
      PCD_SET_EP_CNT_RX_REG(pdwReg, wCount);\
    }
  /**
    * @brief  sets counter for the tx/rx buffer.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @param  wCount: Counter value.
    * @retval None
    */
  #define PCD_SET_EP_TX_CNT(USBx, bEpNum,wCount) (*PCD_EP_TX_CNT((USBx), (bEpNum)) = (wCount))
  
  /**
    * @brief  gets counter of the tx buffer.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval Counter value
    */
  #define PCD_GET_EP_TX_CNT(USBx, bEpNum)((uint16_t)(*PCD_EP_TX_CNT((USBx), (bEpNum))) & 0x3ff)
  #define PCD_GET_EP_RX_CNT(USBx, bEpNum)((uint16_t)(*PCD_EP_RX_CNT((USBx), (bEpNum))) & 0x3ff)
  
  /**
    * @brief  Sets buffer 0/1 address in a double buffer endpoint.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @param  wBuf0Addr: buffer 0 address.
    * @retval Counter value
    */
  #define PCD_SET_EP_DBUF0_ADDR(USBx, bEpNum,wBuf0Addr) {PCD_SET_EP_TX_ADDRESS((USBx), (bEpNum), (wBuf0Addr));}
  #define PCD_SET_EP_DBUF1_ADDR(USBx, bEpNum,wBuf1Addr) {PCD_SET_EP_RX_ADDRESS((USBx), (bEpNum), (wBuf1Addr));}
  
  /**
    * @brief  Sets addresses in a double buffer endpoint.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @param  wBuf0Addr: buffer 0 address.
    * @param  wBuf1Addr = buffer 1 address.
    * @retval None
    */
  #define PCD_SET_EP_DBUF_ADDR(USBx, bEpNum,wBuf0Addr,wBuf1Addr) { \
      PCD_SET_EP_DBUF0_ADDR((USBx), (bEpNum), (wBuf0Addr));\
      PCD_SET_EP_DBUF1_ADDR((USBx), (bEpNum), (wBuf1Addr));\
    } /* PCD_SET_EP_DBUF_ADDR */
  
  /**
    * @brief  Gets buffer 0/1 address of a double buffer endpoint.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval None
    */
  #define PCD_GET_EP_DBUF0_ADDR(USBx, bEpNum) (PCD_GET_EP_TX_ADDRESS((USBx), (bEpNum)))
  #define PCD_GET_EP_DBUF1_ADDR(USBx, bEpNum) (PCD_GET_EP_RX_ADDRESS((USBx), (bEpNum)))
  
  /**
    * @brief  Gets buffer 0/1 address of a double buffer endpoint.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @param  bDir: endpoint dir  EP_DBUF_OUT = OUT 
    *         EP_DBUF_IN  = IN 
    * @param  wCount: Counter value 
    * @retval None
    */
  #define PCD_SET_EP_DBUF0_CNT(USBx, bEpNum, bDir, wCount)  { \
      if((bDir) == PCD_EP_DBUF_OUT)\
        /* OUT endpoint */ \
      {PCD_SET_EP_RX_DBUF0_CNT((USBx), (bEpNum),(wCount));} \
      else if((bDir) == PCD_EP_DBUF_IN)\
        /* IN endpoint */ \
        *PCD_EP_TX_CNT((USBx), (bEpNum)) = (uint32_t)(wCount);  \
    } /* SetEPDblBuf0Count*/
  
  #define PCD_SET_EP_DBUF1_CNT(USBx, bEpNum, bDir, wCount)  { \
      if((bDir) == PCD_EP_DBUF_OUT)\
        /* OUT endpoint */ \
      {PCD_SET_EP_RX_CNT((USBx), (bEpNum),(wCount));}\
      else if((bDir) == PCD_EP_DBUF_IN)\
        /* IN endpoint */\
        *PCD_EP_TX_CNT((USBx), (bEpNum)) = (uint32_t)(wCount); \
    } /* SetEPDblBuf1Count */
  
  #define PCD_SET_EP_DBUF_CNT(USBx, bEpNum, bDir, wCount) {\
      PCD_SET_EP_DBUF0_CNT((USBx), (bEpNum), (bDir), (wCount)); \
      PCD_SET_EP_DBUF1_CNT((USBx), (bEpNum), (bDir), (wCount)); \
    } /* PCD_SET_EP_DBUF_CNT  */
  
  /**
    * @brief  Gets buffer 0/1 rx/tx counter for double buffering.
    * @param  USBx: USB peripheral instance register address.
    * @param  bEpNum: Endpoint Number.
    * @retval None
    */
  #define PCD_GET_EP_DBUF0_CNT(USBx, bEpNum) (PCD_GET_EP_TX_CNT((USBx), (bEpNum)))
  #define PCD_GET_EP_DBUF1_CNT(USBx, bEpNum) (PCD_GET_EP_RX_CNT((USBx), (bEpNum)))
  
  /** @defgroup PCD_Instance_definition PCD Instance definition
    * @{
    */
  #define IS_PCD_ALL_INSTANCE                    IS_USB_ALL_INSTANCE
  /**
    * @}
    */
  
  /** @addtogroup PCD_Exported_Functions_Group3 Peripheral Control functions
    * @{
    */
  /* Peripheral Control functions  ************************************************/
  HAL_StatusTypeDef HAL_PCD_DevConnect(PCD_HandleTypeDef *hpcd);
  HAL_StatusTypeDef HAL_PCD_DevDisconnect(PCD_HandleTypeDef *hpcd);
  HAL_StatusTypeDef HAL_PCD_SetAddress(PCD_HandleTypeDef *hpcd, uint8_t address);
  HAL_StatusTypeDef HAL_PCD_EP_Open(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint16_t ep_mps, uint8_t ep_type);
  HAL_StatusTypeDef HAL_PCD_EP_Close(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
  HAL_StatusTypeDef HAL_PCD_EP_Receive(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len);
  HAL_StatusTypeDef HAL_PCD_EP_Transmit(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len);
  uint16_t          HAL_PCD_EP_GetRxCount(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
  HAL_StatusTypeDef HAL_PCD_EP_SetStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
  HAL_StatusTypeDef HAL_PCD_EP_ClrStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
  HAL_StatusTypeDef HAL_PCD_EP_Flush(PCD_HandleTypeDef *hpcd, uint8_t ep_addr);
  HAL_StatusTypeDef HAL_PCD_ActiveRemoteWakeup(PCD_HandleTypeDef *hpcd);
  HAL_StatusTypeDef HAL_PCD_DeActiveRemoteWakeup(PCD_HandleTypeDef *hpcd);
  /**
    * @}
    */
  
  /** @addtogroup PCD_Exported_Functions_Group4 Peripheral State functions
    * @{
    */
  /* Peripheral State functions  **************************************************/
  PCD_StateTypeDef HAL_PCD_GetState(PCD_HandleTypeDef *hpcd);
  /**
    * @}
    */
  
  /** @addtogroup PCDEx_Private_Functions PCD Extended Private Functions
    * @{
    */
  void PCD_WritePMA(USB_TypeDef  *USBx, uint8_t *pbUsrBuf, uint16_t wPMABufAddr, uint16_t wNBytes);
  void PCD_ReadPMA(USB_TypeDef  *USBx, uint8_t *pbUsrBuf, uint16_t wPMABufAddr, uint16_t wNBytes);
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  #endif /* STM32F302xE || STM32F303xE || */
         /* STM32F302xC || STM32F303xC || */
         /* STM32F302x8                || */
         /* STM32F373xC                   */
  
  #ifdef __cplusplus
  }
  #endif
  
  
  #endif /* __STM32F3xx_HAL_PCD_H */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  