/**
  ******************************************************************************
  * @file    usb_regs.c
  * @author  MCD Application Team
  * @version V4.0.0
  * @date    28-August-2012
  * @brief   Interface functions to USB cell registers
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "usb_lib.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Extern variables ----------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/*******************************************************************************
* Function Name  : SetCNTR.
* Description    : Set the CNTR register value.
* Input          : wRegValue: new register value.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetCNTR(uint16_t wRegValue)
{
  _SetCNTR(wRegValue);
}

/*******************************************************************************
* Function Name  : GetCNTR.
* Description    : returns the CNTR register value.
* Input          : None.
* Output         : None.
* Return         : CNTR register Value.
*******************************************************************************/
uint16_t GetCNTR(void)
{
  return(_GetCNTR());
}

/*******************************************************************************
* Function Name  : SetISTR.
* Description    : Set the ISTR register value.
* Input          : wRegValue: new register value.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetISTR(uint16_t wRegValue)
{
  _SetISTR(wRegValue);
}

/*******************************************************************************
* Function Name  : GetISTR
* Description    : Returns the ISTR register value.
* Input          : None.
* Output         : None.
* Return         : ISTR register Value
*******************************************************************************/
uint16_t GetISTR(void)
{
  return(_GetISTR());
}

/*******************************************************************************
* Function Name  : GetFNR
* Description    : Returns the FNR register value.
* Input          : None.
* Output         : None.
* Return         : FNR register Value
*******************************************************************************/
uint16_t GetFNR(void)
{
  return(_GetFNR());
}

/*******************************************************************************
* Function Name  : SetDADDR
* Description    : Set the DADDR register value.
* Input          : wRegValue: new register value.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetDADDR(uint16_t wRegValue)
{
  _SetDADDR(wRegValue);
}

/*******************************************************************************
* Function Name  : GetDADDR
* Description    : Returns the DADDR register value.
* Input          : None.
* Output         : None.
* Return         : DADDR register Value
*******************************************************************************/
uint16_t GetDADDR(void)
{
  return(_GetDADDR());
}

/*******************************************************************************
* Function Name  : SetBTABLE
* Description    : Set the BTABLE.
* Input          : wRegValue: New register value.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetBTABLE(uint16_t wRegValue)
{
  _SetBTABLE(wRegValue);
}

/*******************************************************************************
* Function Name  : GetBTABLE.
* Description    : Returns the BTABLE register value.
* Input          : None. 
* Output         : None.
* Return         : BTABLE address.
*******************************************************************************/
uint16_t GetBTABLE(void)
{
  return(_GetBTABLE());
}

/*******************************************************************************
* Function Name  : SetENDPOINT
* Description    : Set the Endpoint register value.
* Input          : bEpNum: Endpoint Number. 
*                  wRegValue.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetENDPOINT(uint8_t bEpNum, uint16_t wRegValue)
{
  _SetENDPOINT(bEpNum, wRegValue);
}

/*******************************************************************************
* Function Name  : GetENDPOINT
* Description    : Return the Endpoint register value.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : Endpoint register value.
*******************************************************************************/
uint16_t GetENDPOINT(uint8_t bEpNum)
{
  return(_GetENDPOINT(bEpNum));
}

/*******************************************************************************
* Function Name  : SetEPType
* Description    : sets the type in the endpoint register.
* Input          : bEpNum: Endpoint Number. 
*                  wType: type definition.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPType(uint8_t bEpNum, uint16_t wType)
{
  _SetEPType(bEpNum, wType);
}

/*******************************************************************************
* Function Name  : GetEPType
* Description    : Returns the endpoint type.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : Endpoint Type
*******************************************************************************/
uint16_t GetEPType(uint8_t bEpNum)
{
  return(_GetEPType(bEpNum));
}

/*******************************************************************************
* Function Name  : SetEPTxStatus
* Description    : Set the status of Tx endpoint.
* Input          : bEpNum: Endpoint Number. 
*                  wState: new state.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPTxStatus(uint8_t bEpNum, uint16_t wState)
{
  _SetEPTxStatus(bEpNum, wState);
}

/*******************************************************************************
* Function Name  : SetEPRxStatus
* Description    : Set the status of Rx endpoint.
* Input          : bEpNum: Endpoint Number. 
*                  wState: new state.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPRxStatus(uint8_t bEpNum, uint16_t wState)
{
  _SetEPRxStatus(bEpNum, wState);
}

/*******************************************************************************
* Function Name  : SetDouBleBuffEPStall
* Description    : sets the status for Double Buffer Endpoint to STALL
* Input          : bEpNum: Endpoint Number. 
*                  bDir: Endpoint direction.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetDouBleBuffEPStall(uint8_t bEpNum, uint8_t bDir)
{
  uint16_t Endpoint_DTOG_Status;
  Endpoint_DTOG_Status = GetENDPOINT(bEpNum);
  if (bDir == EP_DBUF_OUT)
  { /* OUT double buffered endpoint */
    _SetENDPOINT(bEpNum, Endpoint_DTOG_Status & ~EPRX_DTOG1);
  }
  else if (bDir == EP_DBUF_IN)
  { /* IN double buffered endpoint */
    _SetENDPOINT(bEpNum, Endpoint_DTOG_Status & ~EPTX_DTOG1);
  }
}

/*******************************************************************************
* Function Name  : GetEPTxStatus
* Description    : Returns the endpoint Tx status.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : Endpoint TX Status
*******************************************************************************/
uint16_t GetEPTxStatus(uint8_t bEpNum)
{
  return(_GetEPTxStatus(bEpNum));
}

/*******************************************************************************
* Function Name  : GetEPRxStatus
* Description    : Returns the endpoint Rx status.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : Endpoint RX Status
*******************************************************************************/
uint16_t GetEPRxStatus(uint8_t bEpNum)
{
  return(_GetEPRxStatus(bEpNum));
}

/*******************************************************************************
* Function Name  : SetEPTxValid
* Description    : Valid the endpoint Tx Status.
* Input          : bEpNum: Endpoint Number.  
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPTxValid(uint8_t bEpNum)
{
  _SetEPTxStatus(bEpNum, EP_TX_VALID);
}

/*******************************************************************************
* Function Name  : SetEPRxValid
* Description    : Valid the endpoint Rx Status.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPRxValid(uint8_t bEpNum)
{
  _SetEPRxStatus(bEpNum, EP_RX_VALID);
}

/*******************************************************************************
* Function Name  : SetEP_KIND
* Description    : Clear the EP_KIND bit.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEP_KIND(uint8_t bEpNum)
{
  _SetEP_KIND(bEpNum);
}

/*******************************************************************************
* Function Name  : ClearEP_KIND
* Description    : set the  EP_KIND bit.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : None.
*******************************************************************************/
void ClearEP_KIND(uint8_t bEpNum)
{
  _ClearEP_KIND(bEpNum);
}
/*******************************************************************************
* Function Name  : Clear_Status_Out
* Description    : Clear the Status Out of the related Endpoint
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : None.
*******************************************************************************/
void Clear_Status_Out(uint8_t bEpNum)
{
  _ClearEP_KIND(bEpNum);
}
/*******************************************************************************
* Function Name  : Set_Status_Out
* Description    : Set the Status Out of the related Endpoint
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : None.
*******************************************************************************/
void Set_Status_Out(uint8_t bEpNum)
{
  _SetEP_KIND(bEpNum);
}
/*******************************************************************************
* Function Name  : SetEPDoubleBuff
* Description    : Enable the double buffer feature for the endpoint. 
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPDoubleBuff(uint8_t bEpNum)
{
  _SetEP_KIND(bEpNum);
}
/*******************************************************************************
* Function Name  : ClearEPDoubleBuff
* Description    : Disable the double buffer feature for the endpoint. 
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : None.
*******************************************************************************/
void ClearEPDoubleBuff(uint8_t bEpNum)
{
  _ClearEP_KIND(bEpNum);
}
/*******************************************************************************
* Function Name  : GetTxStallStatus
* Description    : Returns the Stall status of the Tx endpoint.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : Tx Stall status.
*******************************************************************************/
uint16_t GetTxStallStatus(uint8_t bEpNum)
{
  return(_GetTxStallStatus(bEpNum));
}
/*******************************************************************************
* Function Name  : GetRxStallStatus
* Description    : Returns the Stall status of the Rx endpoint. 
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : Rx Stall status.
*******************************************************************************/
uint16_t GetRxStallStatus(uint8_t bEpNum)
{
  return(_GetRxStallStatus(bEpNum));
}
/*******************************************************************************
* Function Name  : ClearEP_CTR_RX
* Description    : Clear the CTR_RX bit.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : None.
*******************************************************************************/
void ClearEP_CTR_RX(uint8_t bEpNum)
{
  _ClearEP_CTR_RX(bEpNum);
}
/*******************************************************************************
* Function Name  : ClearEP_CTR_TX
* Description    : Clear the CTR_TX bit.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : None.
*******************************************************************************/
void ClearEP_CTR_TX(uint8_t bEpNum)
{
  _ClearEP_CTR_TX(bEpNum);
}
/*******************************************************************************
* Function Name  : ToggleDTOG_RX
* Description    : Toggle the DTOG_RX bit.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : None.
*******************************************************************************/
void ToggleDTOG_RX(uint8_t bEpNum)
{
  _ToggleDTOG_RX(bEpNum);
}
/*******************************************************************************
* Function Name  : ToggleDTOG_TX
* Description    : Toggle the DTOG_TX bit.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : None.
*******************************************************************************/
void ToggleDTOG_TX(uint8_t bEpNum)
{
  _ToggleDTOG_TX(bEpNum);
}
/*******************************************************************************
* Function Name  : ClearDTOG_RX.
* Description    : Clear the DTOG_RX bit.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : None.
*******************************************************************************/
void ClearDTOG_RX(uint8_t bEpNum)
{
  _ClearDTOG_RX(bEpNum);
}
/*******************************************************************************
* Function Name  : ClearDTOG_TX.
* Description    : Clear the DTOG_TX bit.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : None.
*******************************************************************************/
void ClearDTOG_TX(uint8_t bEpNum)
{
  _ClearDTOG_TX(bEpNum);
}
/*******************************************************************************
* Function Name  : SetEPAddress
* Description    : Set the endpoint address.
* Input          : bEpNum: Endpoint Number.
*                  bAddr: New endpoint address.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPAddress(uint8_t bEpNum, uint8_t bAddr)
{
  _SetEPAddress(bEpNum, bAddr);
}
/*******************************************************************************
* Function Name  : GetEPAddress
* Description    : Get the endpoint address.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : Endpoint address.
*******************************************************************************/
uint8_t GetEPAddress(uint8_t bEpNum)
{
  return(_GetEPAddress(bEpNum));
}
/*******************************************************************************
* Function Name  : SetEPTxAddr
* Description    : Set the endpoint Tx buffer address.
* Input          : bEpNum: Endpoint Number.
*                  wAddr: new address. 
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPTxAddr(uint8_t bEpNum, uint16_t wAddr)
{
  _SetEPTxAddr(bEpNum, wAddr);
}
/*******************************************************************************
* Function Name  : SetEPRxAddr
* Description    : Set the endpoint Rx buffer address.
* Input          : bEpNum: Endpoint Number.
*                  wAddr: new address.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPRxAddr(uint8_t bEpNum, uint16_t wAddr)
{
  _SetEPRxAddr(bEpNum, wAddr);
}
/*******************************************************************************
* Function Name  : GetEPTxAddr
* Description    : Returns the endpoint Tx buffer address.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : Rx buffer address. 
*******************************************************************************/
uint16_t GetEPTxAddr(uint8_t bEpNum)
{
  return(_GetEPTxAddr(bEpNum));
}
/*******************************************************************************
* Function Name  : GetEPRxAddr.
* Description    : Returns the endpoint Rx buffer address.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : Rx buffer address.
*******************************************************************************/
uint16_t GetEPRxAddr(uint8_t bEpNum)
{
  return(_GetEPRxAddr(bEpNum));
}
/*******************************************************************************
* Function Name  : SetEPTxCount.
* Description    : Set the Tx count.
* Input          : bEpNum: Endpoint Number.
*                  wCount: new count value.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPTxCount(uint8_t bEpNum, uint16_t wCount)
{
  _SetEPTxCount(bEpNum, wCount);
}
/*******************************************************************************
* Function Name  : SetEPCountRxReg.
* Description    : Set the Count Rx Register value.
* Input          : *pdwReg: point to the register.
*                  wCount: the new register value.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPCountRxReg(uint32_t *pdwReg, uint16_t wCount)
{
  _SetEPCountRxReg(dwReg, wCount);
}
/*******************************************************************************
* Function Name  : SetEPRxCount
* Description    : Set the Rx count.
* Input          : bEpNum: Endpoint Number. 
*                  wCount: the new count value.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPRxCount(uint8_t bEpNum, uint16_t wCount)
{
  _SetEPRxCount(bEpNum, wCount);
}
/*******************************************************************************
* Function Name  : GetEPTxCount
* Description    : Get the Tx count.
* Input          : bEpNum: Endpoint Number. 
* Output         : None
* Return         : Tx count value.
*******************************************************************************/
uint16_t GetEPTxCount(uint8_t bEpNum)
{
  return(_GetEPTxCount(bEpNum));
}
/*******************************************************************************
* Function Name  : GetEPRxCount
* Description    : Get the Rx count.
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : Rx count value.
*******************************************************************************/
uint16_t GetEPRxCount(uint8_t bEpNum)
{
  return(_GetEPRxCount(bEpNum));
}
/*******************************************************************************
* Function Name  : SetEPDblBuffAddr
* Description    : Set the addresses of the buffer 0 and 1.
* Input          : bEpNum: Endpoint Number.  
*                  wBuf0Addr: new address of buffer 0. 
*                  wBuf1Addr: new address of buffer 1.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPDblBuffAddr(uint8_t bEpNum, uint16_t wBuf0Addr, uint16_t wBuf1Addr)
{
  _SetEPDblBuffAddr(bEpNum, wBuf0Addr, wBuf1Addr);
}
/*******************************************************************************
* Function Name  : SetEPDblBuf0Addr
* Description    : Set the Buffer 1 address.
* Input          : bEpNum: Endpoint Number
*                  wBuf0Addr: new address.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPDblBuf0Addr(uint8_t bEpNum, uint16_t wBuf0Addr)
{
  _SetEPDblBuf0Addr(bEpNum, wBuf0Addr);
}
/*******************************************************************************
* Function Name  : SetEPDblBuf1Addr
* Description    : Set the Buffer 1 address.
* Input          : bEpNum: Endpoint Number
*                  wBuf1Addr: new address.
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPDblBuf1Addr(uint8_t bEpNum, uint16_t wBuf1Addr)
{
  _SetEPDblBuf1Addr(bEpNum, wBuf1Addr);
}
/*******************************************************************************
* Function Name  : GetEPDblBuf0Addr
* Description    : Returns the address of the Buffer 0.
* Input          : bEpNum: Endpoint Number.
* Output         : None.
* Return         : None.
*******************************************************************************/
uint16_t GetEPDblBuf0Addr(uint8_t bEpNum)
{
  return(_GetEPDblBuf0Addr(bEpNum));
}
/*******************************************************************************
* Function Name  : GetEPDblBuf1Addr
* Description    : Returns the address of the Buffer 1.
* Input          : bEpNum: Endpoint Number.
* Output         : None.
* Return         : Address of the Buffer 1.
*******************************************************************************/
uint16_t GetEPDblBuf1Addr(uint8_t bEpNum)
{
  return(_GetEPDblBuf1Addr(bEpNum));
}
/*******************************************************************************
* Function Name  : SetEPDblBuffCount
* Description    : Set the number of bytes for a double Buffer 
*                  endpoint.
* Input          : bEpNum,bDir, wCount
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPDblBuffCount(uint8_t bEpNum, uint8_t bDir, uint16_t wCount)
{
  _SetEPDblBuffCount(bEpNum, bDir, wCount);
}
/*******************************************************************************
* Function Name  : SetEPDblBuf0Count
* Description    : Set the number of bytes in the buffer 0 of a double Buffer 
*                  endpoint.
* Input          : bEpNum, bDir,  wCount
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPDblBuf0Count(uint8_t bEpNum, uint8_t bDir, uint16_t wCount)
{
  _SetEPDblBuf0Count(bEpNum, bDir, wCount);
}
/*******************************************************************************
* Function Name  : SetEPDblBuf1Count
* Description    : Set the number of bytes in the buffer 0 of a double Buffer 
*                  endpoint.
* Input          : bEpNum,  bDir,  wCount
* Output         : None.
* Return         : None.
*******************************************************************************/
void SetEPDblBuf1Count(uint8_t bEpNum, uint8_t bDir, uint16_t wCount)
{
  _SetEPDblBuf1Count(bEpNum, bDir, wCount);
}
/*******************************************************************************
* Function Name  : GetEPDblBuf0Count
* Description    : Returns the number of byte received in the buffer 0 of a double
*                  Buffer endpoint.
* Input          : bEpNum: Endpoint Number.
* Output         : None.
* Return         : Endpoint Buffer 0 count
*******************************************************************************/
uint16_t GetEPDblBuf0Count(uint8_t bEpNum)
{
  return(_GetEPDblBuf0Count(bEpNum));
}
/*******************************************************************************
* Function Name  : GetEPDblBuf1Count
* Description    : Returns the number of data received in the buffer 1 of a double
*                  Buffer endpoint.
* Input          : bEpNum: Endpoint Number.
* Output         : None.
* Return         : Endpoint Buffer 1 count.
*******************************************************************************/
uint16_t GetEPDblBuf1Count(uint8_t bEpNum)
{
  return(_GetEPDblBuf1Count(bEpNum));
}
/*******************************************************************************
* Function Name  : GetEPDblBufDir
* Description    : gets direction of the double buffered endpoint
* Input          : bEpNum: Endpoint Number. 
* Output         : None.
* Return         : EP_DBUF_OUT, EP_DBUF_IN,
*                  EP_DBUF_ERR if the endpoint counter not yet programmed.
*******************************************************************************/
EP_DBUF_DIR GetEPDblBufDir(uint8_t bEpNum)
{
  if ((uint16_t)(*_pEPRxCount(bEpNum) & 0xFC00) != 0)
    return(EP_DBUF_OUT);
  else if (((uint16_t)(*_pEPTxCount(bEpNum)) & 0x03FF) != 0)
    return(EP_DBUF_IN);
  else
    return(EP_DBUF_ERR);
}
/*******************************************************************************
* Function Name  : FreeUserBuffer
* Description    : free buffer used from the application realizing it to the line
                   toggles bit SW_BUF in the double buffered endpoint register
* Input          : bEpNum, bDir
* Output         : None.
* Return         : None.
*******************************************************************************/
void FreeUserBuffer(uint8_t bEpNum, uint8_t bDir)
{
  if (bDir == EP_DBUF_OUT)
  { /* OUT double buffered endpoint */
    _ToggleDTOG_TX(bEpNum);
  }
  else if (bDir == EP_DBUF_IN)
  { /* IN double buffered endpoint */
    _ToggleDTOG_RX(bEpNum);
  }
}

/*******************************************************************************
* Function Name  : ToWord
* Description    : merge two byte in a word.
* Input          : bh: byte high, bl: bytes low.
* Output         : None.
* Return         : resulted word.
*******************************************************************************/
uint16_t ToWord(uint8_t bh, uint8_t bl)
{
  uint16_t wRet;
  wRet = (uint16_t)bl | ((uint16_t)bh << 8);
  return(wRet);
}
/*******************************************************************************
* Function Name  : ByteSwap
* Description    : Swap two byte in a word.
* Input          : wSwW: word to Swap.
* Output         : None.
* Return         : resulted word.
*******************************************************************************/
uint16_t ByteSwap(uint16_t wSwW)
{
  uint8_t bTemp;
  uint16_t wRet;
  bTemp = (uint8_t)(wSwW & 0xff);
  wRet =  (wSwW >> 8) | ((uint16_t)bTemp << 8);
  return(wRet);
}

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