{
  /* Check the parameters */
  assert_param(IS_SDIO_POWER_STATE(SDIO_PowerState));

  SDIO->POWER = SDIO_PowerState;
}

/**
  * @brief  Gets the power status of the controller.
  * @param  None
  * @retval Power status of the controller. The returned value can
  *   be one of the following:
  * - 0x00: Power OFF
  * - 0x02: Power UP
  * - 0x03: Power ON 
  */
uint32_t SDIO_GetPowerState(void)
{
  return (SDIO->POWER & (~PWR_PWRCTRL_MASK));
}

/**
  * @}
  */

/** @defgroup SDIO_Group2 DMA transfers management functions
 *  @brief   DMA transfers management functions
 *
 @verbatim
  ==============================================================================
                  ##### DMA transfers management functions #####
  ==============================================================================
    [..] This section provide functions allowing to program SDIO DMA transfer.

@endverbatim
  * @{
  */

/**
  * @brief  Enables or disables the SDIO DMA request.
  * @param  NewState: new state of the selected SDIO DMA request.
  *   This parameter can be: ENABLE or DISABLE.
  * @retval None
  */
void SDIO_DMACmd(FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_FUNCTIONAL_STATE(NewState));
  
  *(__IO uint32_t *) DCTRL_DMAEN_BB = (uint32_t)NewState;
}

/**
  * @}
  */

/** @defgroup SDIO_Group3 Command path state machine (CPSM) management functions
 *  @brief   Command path state machine (CPSM) management functions 
 *
 @verbatim
  ==============================================================================
       ##### Command path state machine (CPSM) management functions #####
  ==============================================================================
  [..] This section provide functions allowing to program and read the Command 
       path state machine (CPSM).

@endverbatim
  * @{
  */

/**
  * @brief  Initializes the SDIO Command according to the specified 
  *   parameters in the SDIO_CmdInitStruct and send the command.
  * @param  SDIO_CmdInitStruct : pointer to a SDIO_CmdInitTypeDef 
  *   structure that contains the configuration information for the SDIO command.
  * @retval None
  */
void SDIO_SendCommand(SDIO_CmdInitTypeDef *SDIO_CmdInitStruct)
{
  uint32_t tmpreg = 0;
  
  /* Check the parameters */
  assert_param(IS_SDIO_CMD_INDEX(SDIO_CmdInitStruct->SDIO_CmdIndex));
  assert_param(IS_SDIO_RESPONSE(SDIO_CmdInitStruct->SDIO_Response));
  assert_param(IS_SDIO_WAIT(SDIO_CmdInitStruct->SDIO_Wait));
  assert_param(IS_SDIO_CPSM(SDIO_CmdInitStruct->SDIO_CPSM));
  
/*---------------------------- SDIO ARG Configuration ------------------------*/
  /* Set the SDIO Argument value */
  SDIO->ARG = SDIO_CmdInitStruct->SDIO_Argument;
  
/*---------------------------- SDIO CMD Configuration ------------------------*/  
  /* Get the SDIO CMD value */
  tmpreg = SDIO->CMD;
  /* Clear CMDINDEX, WAITRESP, WAITINT, WAITPEND, CPSMEN bits */
  tmpreg &= CMD_CLEAR_MASK;
  /* Set CMDINDEX bits according to SDIO_CmdIndex value */
  /* Set WAITRESP bits according to SDIO_Response value */
  /* Set WAITINT and WAITPEND bits according to SDIO_Wait value */
  /* Set CPSMEN bits according to SDIO_CPSM value */
  tmpreg |= (uint32_t)SDIO_CmdInitStruct->SDIO_CmdIndex | SDIO_CmdInitStruct->SDIO_Response
           | SDIO_CmdInitStruct->SDIO_Wait | SDIO_CmdInitStruct->SDIO_CPSM;
  
  /* Write to SDIO CMD */
  SDIO->CMD = tmpreg;
}

/**
  * @brief  Fills each SDIO_CmdInitStruct member with its default value.
  * @param  SDIO_CmdInitStruct: pointer to an SDIO_CmdInitTypeDef 
  *   structure which will be initialized.
  * @retval None
  */
void SDIO_CmdStructInit(SDIO_CmdInitTypeDef* SDIO_CmdInitStruct)
{
  /* SDIO_CmdInitStruct members default value */
  SDIO_CmdInitStruct->SDIO_Argument = 0x00;
  SDIO_CmdInitStruct->SDIO_CmdIndex = 0x00;
  SDIO_CmdInitStruct->SDIO_Response = SDIO_Response_No;
  SDIO_CmdInitStruct->SDIO_Wait = SDIO_Wait_No;
  SDIO_CmdInitStruct->SDIO_CPSM = SDIO_CPSM_Disable;
}

/**
  * @brief  Returns command index of last command for which response received.
  * @param  None
  * @retval Returns the command index of the last command response received.
  */
uint8_t SDIO_GetCommandResponse(void)
{
  return (uint8_t)(SDIO->RESPCMD);
}

/**
  * @brief  Returns response received from the card for the last command.
  * @param  SDIO_RESP: Specifies the SDIO response register. 
  *   This parameter can be one of the following values:
  *     @arg SDIO_RESP1: Response Register 1.
  *     @arg SDIO_RESP2: Response Register 2.
  *     @arg SDIO_RESP3: Response Register 3.
  *     @arg SDIO_RESP4: Response Register 4.
  * @retval The Corresponding response register value.
  */
uint32_t SDIO_GetResponse(uint32_t SDIO_RESP)
{
  __IO uint32_t tmp = 0;

  /* Check the parameters */
  assert_param(IS_SDIO_RESP(SDIO_RESP));

  tmp = SDIO_RESP_ADDR + SDIO_RESP;
  
  return (*(__IO uint32_t *) tmp); 
}

/**
  * @}
  */

/** @defgroup SDIO_Group4 Data path state machine (DPSM) management functions
 *  @brief   Data path state machine (DPSM) management functions
 *
 @verbatim
  ==============================================================================
        ##### Data path state machine (DPSM) management functions #####
  ==============================================================================
  [..] This section provide functions allowing to program and read the Data path 
       state machine (DPSM).

@endverbatim
  * @{
  */

/**
  * @brief  Initializes the SDIO data path according to the specified 
  *   parameters in the SDIO_DataInitStruct.
  * @param  SDIO_DataInitStruct : pointer to a SDIO_DataInitTypeDef structure that
  *   contains the configuration information for the SDIO command.
  * @retval None
  */
void SDIO_DataConfig(SDIO_DataInitTypeDef* SDIO_DataInitStruct)
{
  uint32_t tmpreg = 0;
  
  /* Check the parameters */
  assert_param(IS_SDIO_DATA_LENGTH(SDIO_DataInitStruct->SDIO_DataLength));
  assert_param(IS_SDIO_BLOCK_SIZE(SDIO_DataInitStruct->SDIO_DataBlockSize));
  assert_param(IS_SDIO_TRANSFER_DIR(SDIO_DataInitStruct->SDIO_TransferDir));
  assert_param(IS_SDIO_TRANSFER_MODE(SDIO_DataInitStruct->SDIO_TransferMode));
  assert_param(IS_SDIO_DPSM(SDIO_DataInitStruct->SDIO_DPSM));

/*---------------------------- SDIO DTIMER Configuration ---------------------*/
  /* Set the SDIO Data TimeOut value */
  SDIO->DTIMER = SDIO_DataInitStruct->SDIO_DataTimeOut;

/*---------------------------- SDIO DLEN Configuration -----------------------*/
  /* Set the SDIO DataLength value */
  SDIO->DLEN = SDIO_DataInitStruct->SDIO_DataLength;

/*---------------------------- SDIO DCTRL Configuration ----------------------*/  
  /* Get the SDIO DCTRL value */
  tmpreg = SDIO->DCTRL;
  /* Clear DEN, DTMODE, DTDIR and DBCKSIZE bits */
  tmpreg &= DCTRL_CLEAR_MASK;
  /* Set DEN bit according to SDIO_DPSM value */
  /* Set DTMODE bit according to SDIO_TransferMode value */
  /* Set DTDIR bit according to SDIO_TransferDir value */
  /* Set DBCKSIZE bits according to SDIO_DataBlockSize value */
  tmpreg |= (uint32_t)SDIO_DataInitStruct->SDIO_DataBlockSize | SDIO_DataInitStruct->SDIO_TransferDir
           | SDIO_DataInitStruct->SDIO_TransferMode | SDIO_DataInitStruct->SDIO_DPSM;

  /* Write to SDIO DCTRL */
  SDIO->DCTRL = tmpreg;
}

/**
  * @brief  Fills each SDIO_DataInitStruct member with its default value.
  * @param  SDIO_DataInitStruct: pointer to an SDIO_DataInitTypeDef structure which
  *   will be initialized.
  * @retval None
  */
void SDIO_DataStructInit(SDIO_DataInitTypeDef* SDIO_DataInitStruct)
{
  /* SDIO_DataInitStruct members default value */
  SDIO_DataInitStruct->SDIO_DataTimeOut = 0xFFFFFFFF;
  SDIO_DataInitStruct->SDIO_DataLength = 0x00;
  SDIO_DataInitStruct->SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
  SDIO_DataInitStruct->SDIO_TransferDir = SDIO_TransferDir_ToCard;
  SDIO_DataInitStruct->SDIO_TransferMode = SDIO_TransferMode_Block;  
  SDIO_DataInitStruct->SDIO_DPSM = SDIO_DPSM_Disable;
}

/**
  * @brief  Returns number of remaining data bytes to be transferred.
  * @param  None
  * @retval Number of remaining data bytes to be transferred
  */
uint32_t SDIO_GetDataCounter(void)
{ 
  return SDIO->DCOUNT;
}

/**
  * @brief  Read one data word from Rx FIFO.
  * @param  None
  * @retval Data received
  */
uint32_t SDIO_ReadData(void)
{ 
  return SDIO->FIFO;
}

/**
  * @brief  Write one data word to Tx FIFO.
  * @param  Data: 32-bit data word to write.
  * @retval None
  */
void SDIO_WriteData(uint32_t Data)
{ 
  SDIO->FIFO = Data;
}

/**
  * @brief  Returns the number of words left to be written to or read from FIFO.	
  * @param  None
  * @retval Remaining number of words.
  */
uint32_t SDIO_GetFIFOCount(void)
{ 
  return SDIO->FIFOCNT;
}

/**
  * @}
  */

/** @defgroup SDIO_Group5 SDIO IO Cards mode management functions
 *  @brief   SDIO IO Cards mode management functions
 *
 @verbatim
  ==============================================================================
              ##### SDIO IO Cards mode management functions #####
  ==============================================================================
  [..] This section provide functions allowing to program and read the SDIO IO 
       Cards.

@endverbatim
  * @{
  */

/**
  * @brief  Starts the SD I/O Read Wait operation.	
  * @param  NewState: new state of the Start SDIO Read Wait operation. 
  *   This parameter can be: ENABLE or DISABLE.
  * @retval None
  */
void SDIO_StartSDIOReadWait(FunctionalState NewState)
{ 
  /* Check the parameters */
  assert_param(IS_FUNCTIONAL_STATE(NewState));
  
  *(__IO uint32_t *) DCTRL_RWSTART_BB = (uint32_t) NewState;
}

/**
  * @brief  Stops the SD I/O Read Wait operation.	
  * @param  NewState: new state of the Stop SDIO Read Wait operation. 
  *   This parameter can be: ENABLE or DISABLE.
  * @retval None
  */
void SDIO_StopSDIOReadWait(FunctionalState NewState)
{ 
  /* Check the parameters */
  assert_param(IS_FUNCTIONAL_STATE(NewState));
  
  *(__IO uint32_t *) DCTRL_RWSTOP_BB = (uint32_t) NewState;
}

/**
  * @brief  Sets one of the two options of inserting read wait interval.
  * @param  SDIO_ReadWaitMode: SD I/O Read Wait operation mode.
  *   This parametre can be:
  *     @arg SDIO_ReadWaitMode_CLK: Read Wait control by stopping SDIOCLK.
  *     @arg SDIO_ReadWaitMode_DATA2: Read Wait control using SDIO_DATA2.
  * @retval None
  */
void SDIO_SetSDIOReadWaitMode(uint32_t SDIO_ReadWaitMode)
{