stm32f4xx_hal_pccard.c

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/**
  ******************************************************************************
  * @file    stm32f4xx_hal_pccard.c
  * @author  MCD Application Team
  * @brief   PCCARD HAL module driver.
  *          This file provides a generic firmware to drive PCCARD memories mounted
  *          as external device.
  *
  @verbatim
 ===============================================================================
                        ##### How to use this driver #####
 ===============================================================================
   [..]
     This driver is a generic layered driver which contains a set of APIs used to
      control PCCARD/compact flash memories. It uses the FMC/FSMC layer functions
     to interface with PCCARD devices. This driver is used for:

    (+) PCCARD/Compact Flash memory configuration sequence using the function
        HAL_PCCARD_Init()/HAL_CF_Init() with control and timing parameters for
        both common and attribute spaces.

    (+) Read PCCARD/Compact Flash memory maker and device IDs using the function
        HAL_PCCARD_Read_ID()/HAL_CF_Read_ID(). The read information is stored in
        the CompactFlash_ID structure declared by the function caller.

    (+) Access PCCARD/Compact Flash memory by read/write operations using the functions
        HAL_PCCARD_Read_Sector()/ HAL_PCCARD_Write_Sector() -
        HAL_CF_Read_Sector()/HAL_CF_Write_Sector(), to read/write sector.

    (+) Perform PCCARD/Compact Flash Reset chip operation using the function
        HAL_PCCARD_Reset()/HAL_CF_Reset.

    (+) Perform PCCARD/Compact Flash erase sector operation using the function
        HAL_PCCARD_Erase_Sector()/HAL_CF_Erase_Sector.

    (+) Read the PCCARD/Compact Flash status operation using the function
        HAL_PCCARD_ReadStatus()/HAL_CF_ReadStatus().

    (+) You can monitor the PCCARD/Compact Flash  device HAL state by calling
        the function HAL_PCCARD_GetState()/HAL_CF_GetState()

   [..]
     (@) This driver is a set of generic APIs which handle standard PCCARD/compact flash
         operations. If a PCCARD/Compact Flash device contains different operations
         and/or implementations, it should be implemented separately.

      *** Callback registration ***
    =============================================
    [..]
      The compilation define  USE_HAL_PCCARD_REGISTER_CALLBACKS when set to 1
      allows the user to configure dynamically the driver callbacks.

      Use Functions HAL_PCCARD_RegisterCallback() to register a user callback,
      it allows to register following callbacks:
        (+) MspInitCallback    : PCCARD MspInit.
        (+) MspDeInitCallback  : PCCARD MspDeInit.
      This function takes as parameters the HAL peripheral handle, the Callback ID
      and a pointer to the user callback function.

      Use function HAL_PCCARD_UnRegisterCallback() to reset a callback to the default
      weak (surcharged) function. It allows to reset following callbacks:
        (+) MspInitCallback    : PCCARD MspInit.
        (+) MspDeInitCallback  : PCCARD MspDeInit.
      This function) takes as parameters the HAL peripheral handle and the Callback ID.

      By default, after the HAL_PCCARD_Init and if the state is HAL_PCCARD_STATE_RESET
      all callbacks are reset to the corresponding legacy weak (surcharged) functions.
      Exception done for MspInit and MspDeInit callbacks that are respectively
      reset to the legacy weak (surcharged) functions in the HAL_PCCARD_Init
      and  HAL_PCCARD_DeInit only when these callbacks are null (not registered beforehand).
      If not, MspInit or MspDeInit are not null, the HAL_PCCARD_Init and HAL_PCCARD_DeInit
      keep and use the user MspInit/MspDeInit callbacks (registered beforehand)

      Callbacks can be registered/unregistered in READY state only.
      Exception done for MspInit/MspDeInit callbacks that can be registered/unregistered
      in READY or RESET state, thus registered (user) MspInit/DeInit callbacks can be used
      during the Init/DeInit.
      In that case first register the MspInit/MspDeInit user callbacks
      using HAL_PCCARD_RegisterCallback before calling HAL_PCCARD_DeInit
      or HAL_PCCARD_Init function.

      When The compilation define USE_HAL_PCCARD_REGISTER_CALLBACKS is set to 0 or
      not defined, the callback registering feature is not available
      and weak (surcharged) callbacks are used.

  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                       opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"

#if defined(FMC_Bank4) || defined(FSMC_Bank4)

/** @addtogroup STM32F4xx_HAL_Driver
  * @{
  */

#ifdef HAL_PCCARD_MODULE_ENABLED

/** @defgroup PCCARD PCCARD
  * @brief PCCARD HAL module driver
  * @{
  */
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/

/** @defgroup PCCARD_Private_Defines PCCARD Private Defines
  * @{
  */
#define PCCARD_TIMEOUT_READ_ID                 0x0000FFFFU
#define PCCARD_TIMEOUT_READ_WRITE_SECTOR       0x0000FFFFU
#define PCCARD_TIMEOUT_ERASE_SECTOR            0x00000400U
#define PCCARD_TIMEOUT_STATUS                  0x01000000U

#define PCCARD_STATUS_OK                       (uint8_t)0x58
#define PCCARD_STATUS_WRITE_OK                 (uint8_t)0x50
/**
  * @}
  */

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function ----------------------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup PCCARD_Exported_Functions PCCARD Exported Functions
  * @{
  */

/** @defgroup PCCARD_Exported_Functions_Group1 Initialization and de-initialization functions
  * @brief    Initialization and Configuration functions
  *
  @verbatim
  ==============================================================================
          ##### PCCARD Initialization and de-initialization functions #####
  ==============================================================================
  [..]
    This section provides functions allowing to initialize/de-initialize
    the PCCARD memory

@endverbatim
  * @{
  */

/**
  * @brief  Perform the PCCARD memory Initialization sequence
  * @param  hpccard pointer to a PCCARD_HandleTypeDef structure that contains
  *                the configuration information for PCCARD module.
  * @param  ComSpaceTiming Common space timing structure
  * @param  AttSpaceTiming Attribute space timing structure
  * @param  IOSpaceTiming IO space timing structure
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCCARD_Init(PCCARD_HandleTypeDef *hpccard, FMC_NAND_PCC_TimingTypeDef *ComSpaceTiming,
                                  FMC_NAND_PCC_TimingTypeDef *AttSpaceTiming, FMC_NAND_PCC_TimingTypeDef *IOSpaceTiming)
{
  /* Check the PCCARD controller state */
  if (hpccard == NULL)
  {
    return HAL_ERROR;
  }

  if (hpccard->State == HAL_PCCARD_STATE_RESET)
  {
    /* Allocate lock resource and initialize it */
    hpccard->Lock = HAL_UNLOCKED;
#if (USE_HAL_PCCARD_REGISTER_CALLBACKS == 1)
    if (hpccard->MspInitCallback == NULL)
    {
      hpccard->MspInitCallback = HAL_PCCARD_MspInit;
    }
    hpccard->ItCallback = HAL_PCCARD_ITCallback;

    /* Init the low level hardware */
    hpccard->MspInitCallback(hpccard);
#else
    /* Initialize the low level hardware (MSP) */
    HAL_PCCARD_MspInit(hpccard);
#endif
  }

  /* Initialize the PCCARD state */
  hpccard->State = HAL_PCCARD_STATE_BUSY;

  /* Initialize PCCARD control Interface */
  FMC_PCCARD_Init(hpccard->Instance, &(hpccard->Init));

  /* Init PCCARD common space timing Interface */
  FMC_PCCARD_CommonSpace_Timing_Init(hpccard->Instance, ComSpaceTiming);

  /* Init PCCARD attribute space timing Interface */
  FMC_PCCARD_AttributeSpace_Timing_Init(hpccard->Instance, AttSpaceTiming);

  /* Init PCCARD IO space timing Interface */
  FMC_PCCARD_IOSpace_Timing_Init(hpccard->Instance, IOSpaceTiming);

  /* Enable the PCCARD device */
  __FMC_PCCARD_ENABLE(hpccard->Instance);

  /* Update the PCCARD state */
  hpccard->State = HAL_PCCARD_STATE_READY;

  return HAL_OK;

}

/**
  * @brief  Perform the PCCARD memory De-initialization sequence
  * @param  hpccard pointer to a PCCARD_HandleTypeDef structure that contains
  *                the configuration information for PCCARD module.
  * @retval HAL status
  */
HAL_StatusTypeDef  HAL_PCCARD_DeInit(PCCARD_HandleTypeDef *hpccard)
{
#if (USE_HAL_PCCARD_REGISTER_CALLBACKS == 1)
  if (hpccard->MspDeInitCallback == NULL)
  {
    hpccard->MspDeInitCallback = HAL_PCCARD_MspDeInit;
  }

  /* DeInit the low level hardware */
  hpccard->MspDeInitCallback(hpccard);
#else
  /* De-Initialize the low level hardware (MSP) */
  HAL_PCCARD_MspDeInit(hpccard);
#endif

  /* Configure the PCCARD registers with their reset values */
  FMC_PCCARD_DeInit(hpccard->Instance);

  /* Update the PCCARD controller state */
  hpccard->State = HAL_PCCARD_STATE_RESET;

  /* Release Lock */
  __HAL_UNLOCK(hpccard);

  return HAL_OK;
}

/**
  * @brief  PCCARD MSP Init
  * @param  hpccard pointer to a PCCARD_HandleTypeDef structure that contains
  *                the configuration information for PCCARD module.
  * @retval None
  */
__weak void HAL_PCCARD_MspInit(PCCARD_HandleTypeDef *hpccard)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpccard);
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_PCCARD_MspInit could be implemented in the user file
   */
}

/**
  * @brief  PCCARD MSP DeInit
  * @param  hpccard pointer to a PCCARD_HandleTypeDef structure that contains
  *                the configuration information for PCCARD module.
  * @retval None
  */
__weak void HAL_PCCARD_MspDeInit(PCCARD_HandleTypeDef *hpccard)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpccard);
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_PCCARD_MspDeInit could be implemented in the user file
   */
}

/**
  * @}
  */

/** @defgroup PCCARD_Exported_Functions_Group2 Input and Output functions
  * @brief    Input Output and memory control functions
  *
  @verbatim
  ==============================================================================
                    ##### PCCARD Input and Output functions #####
  ==============================================================================
  [..]
    This section provides functions allowing to use and control the PCCARD memory

@endverbatim
  * @{
  */

/**
  * @brief  Read Compact Flash's ID.
  * @param  hpccard pointer to a PCCARD_HandleTypeDef structure that contains
  *                the configuration information for PCCARD module.
  * @param  CompactFlash_ID Compact flash ID structure.
  * @param  pStatus pointer to compact flash status
  * @retval HAL status
  *
  */
HAL_StatusTypeDef HAL_PCCARD_Read_ID(PCCARD_HandleTypeDef *hpccard, uint8_t CompactFlash_ID[], uint8_t *pStatus)
{
  uint32_t timeout = PCCARD_TIMEOUT_READ_ID, index = 0U;
  uint8_t status = 0;

  /* Process Locked */
  __HAL_LOCK(hpccard);

  /* Check the PCCARD controller state */
  if (hpccard->State == HAL_PCCARD_STATE_BUSY)
  {
    return HAL_BUSY;
  }

  /* Update the PCCARD controller state */
  hpccard->State = HAL_PCCARD_STATE_BUSY;

  /* Initialize the PCCARD status */
  *pStatus = PCCARD_READY;

  /* Send the Identify Command */
  *(__IO uint16_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_STATUS_CMD)  = (uint16_t)0xECEC;

  /* Read PCCARD IDs and timeout treatment */
  do
  {
    /* Read the PCCARD status */
    status = *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_STATUS_CMD_ALTERNATE);

    timeout--;
  } while ((status != PCCARD_STATUS_OK) && timeout);

  if (timeout == 0U)
  {
    *pStatus = PCCARD_TIMEOUT_ERROR;
  }
  else
  {
    /* Read PCCARD ID bytes */
    for (index = 0U; index < 16U; index++)
    {
      CompactFlash_ID[index] = *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_DATA);
    }
  }

  /* Update the PCCARD controller state */
  hpccard->State = HAL_PCCARD_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hpccard);

  return HAL_OK;
}

/**
  * @brief  Read sector from PCCARD memory
  * @param  hpccard pointer to a PCCARD_HandleTypeDef structure that contains
  *                the configuration information for PCCARD module.
  * @param  pBuffer pointer to destination read buffer
  * @param  SectorAddress Sector address to read
  * @param  pStatus pointer to PCCARD status
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCCARD_Read_Sector(PCCARD_HandleTypeDef *hpccard, uint16_t *pBuffer, uint16_t SectorAddress,
                                         uint8_t *pStatus)
{
  uint32_t timeout = PCCARD_TIMEOUT_READ_WRITE_SECTOR, index = 0U;
  uint8_t status = 0;

  /* Process Locked */
  __HAL_LOCK(hpccard);

  /* Check the PCCARD controller state */
  if (hpccard->State == HAL_PCCARD_STATE_BUSY)
  {
    return HAL_BUSY;
  }

  /* Update the PCCARD controller state */
  hpccard->State = HAL_PCCARD_STATE_BUSY;

  /* Initialize PCCARD status */
  *pStatus = PCCARD_READY;

  /* Set the parameters to write a sector */
  *(__IO uint16_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_CYLINDER_HIGH) = (uint16_t)0x0000;
  *(__IO uint16_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_SECTOR_COUNT)  = ((uint16_t)0x0100) | ((uint16_t)SectorAddress);
  *(__IO uint16_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_STATUS_CMD)    = (uint16_t)0xE4A0;

  do
  {
    /* wait till the Status = 0x80 */
    status =  *(__IO uint16_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_STATUS_CMD_ALTERNATE);
    timeout--;
  } while ((status == 0x80U) && timeout);

  if (timeout == 0U)
  {
    *pStatus = PCCARD_TIMEOUT_ERROR;
  }

  timeout = PCCARD_TIMEOUT_READ_WRITE_SECTOR;

  do
  {
    /* wait till the Status = PCCARD_STATUS_OK */
    status =  *(__IO uint16_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_STATUS_CMD_ALTERNATE);
    timeout--;
  } while ((status != PCCARD_STATUS_OK) && timeout);

  if (timeout == 0U)
  {
    *pStatus = PCCARD_TIMEOUT_ERROR;
  }

  /* Read bytes */
  for (; index < PCCARD_SECTOR_SIZE; index++)
  {
    *(uint16_t *)pBuffer++ = *(uint16_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR);
  }

  /* Update the PCCARD controller state */
  hpccard->State = HAL_PCCARD_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hpccard);

  return HAL_OK;
}


/**
  * @brief  Write sector to PCCARD memory
  * @param  hpccard pointer to a PCCARD_HandleTypeDef structure that contains
  *                the configuration information for PCCARD module.
  * @param  pBuffer pointer to source write buffer
  * @param  SectorAddress Sector address to write
  * @param  pStatus pointer to PCCARD status
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCCARD_Write_Sector(PCCARD_HandleTypeDef *hpccard, uint16_t *pBuffer, uint16_t SectorAddress,
                                          uint8_t *pStatus)
{
  uint32_t timeout = PCCARD_TIMEOUT_READ_WRITE_SECTOR, index = 0U;
  uint8_t status = 0;

  /* Process Locked */
  __HAL_LOCK(hpccard);

  /* Check the PCCARD controller state */
  if (hpccard->State == HAL_PCCARD_STATE_BUSY)
  {
    return HAL_BUSY;
  }

  /* Update the PCCARD controller state */
  hpccard->State = HAL_PCCARD_STATE_BUSY;

  /* Initialize PCCARD status */
  *pStatus = PCCARD_READY;

  /* Set the parameters to write a sector */
  *(__IO uint16_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_CYLINDER_HIGH) = (uint16_t)0x0000;
  *(__IO uint16_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_SECTOR_COUNT)  = ((uint16_t)0x0100) | ((uint16_t)SectorAddress);
  *(__IO uint16_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_STATUS_CMD)    = (uint16_t)0x30A0;

  do
  {
    /* Wait till the Status = PCCARD_STATUS_OK */
    status =  *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_STATUS_CMD_ALTERNATE);
    timeout--;
  } while ((status != PCCARD_STATUS_OK) && timeout);

  if (timeout == 0U)
  {
    *pStatus = PCCARD_TIMEOUT_ERROR;
  }

  /* Write bytes */
  for (; index < PCCARD_SECTOR_SIZE; index++)
  {
    *(uint16_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR) = *(uint16_t *)pBuffer++;
  }

  do
  {
    /* Wait till the Status = PCCARD_STATUS_WRITE_OK */
    status =  *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_STATUS_CMD_ALTERNATE);
    timeout--;
  } while ((status != PCCARD_STATUS_WRITE_OK) && timeout);

  if (timeout == 0U)
  {
    *pStatus = PCCARD_TIMEOUT_ERROR;
  }

  /* Update the PCCARD controller state */
  hpccard->State = HAL_PCCARD_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hpccard);

  return HAL_OK;
}


/**
  * @brief  Erase sector from PCCARD memory
  * @param  hpccard pointer to a PCCARD_HandleTypeDef structure that contains
  *                the configuration information for PCCARD module.
  * @param  SectorAddress Sector address to erase
  * @param  pStatus pointer to PCCARD status
  * @retval HAL status
  */
HAL_StatusTypeDef  HAL_PCCARD_Erase_Sector(PCCARD_HandleTypeDef *hpccard, uint16_t SectorAddress, uint8_t *pStatus)
{
  uint32_t timeout = PCCARD_TIMEOUT_ERASE_SECTOR;
  uint8_t status = 0;

  /* Process Locked */
  __HAL_LOCK(hpccard);

  /* Check the PCCARD controller state */
  if (hpccard->State == HAL_PCCARD_STATE_BUSY)
  {
    return HAL_BUSY;
  }

  /* Update the PCCARD controller state */
  hpccard->State = HAL_PCCARD_STATE_BUSY;

  /* Initialize PCCARD status */
  *pStatus = PCCARD_READY;

  /* Set the parameters to write a sector */
  *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_CYLINDER_LOW)  = 0x00;
  *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_CYLINDER_HIGH) = 0x00;
  *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_SECTOR_NUMBER) = SectorAddress;
  *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_SECTOR_COUNT)  = 0x01;
  *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_CARD_HEAD)     = 0xA0;
  *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_STATUS_CMD)    = ATA_ERASE_SECTOR_CMD;

  /* wait till the PCCARD is ready */
  status =  *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_STATUS_CMD_ALTERNATE);

  while ((status != PCCARD_STATUS_WRITE_OK) && timeout)
  {
    status =  *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_STATUS_CMD_ALTERNATE);
    timeout--;
  }

  if (timeout == 0U)
  {
    *pStatus = PCCARD_TIMEOUT_ERROR;
  }

  /* Check the PCCARD controller state */
  hpccard->State = HAL_PCCARD_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hpccard);

  return HAL_OK;
}

/**
  * @brief  Reset the PCCARD memory
  * @param  hpccard pointer to a PCCARD_HandleTypeDef structure that contains
  *                the configuration information for PCCARD module.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCCARD_Reset(PCCARD_HandleTypeDef *hpccard)
{
  /* Process Locked */
  __HAL_LOCK(hpccard);

  /* Check the PCCARD controller state */
  if (hpccard->State == HAL_PCCARD_STATE_BUSY)
  {
    return HAL_BUSY;
  }

  /* Provide a SW reset and Read and verify the:
   - PCCard Configuration Option Register at address 0x98000200 --> 0x80
   - Card Configuration and Status Register at address 0x98000202 --> 0x00
   - Pin Replacement Register at address 0x98000204 --> 0x0C
   - Socket and Copy Register at address 0x98000206 --> 0x00
  */

  /* Check the PCCARD controller state */
  hpccard->State = HAL_PCCARD_STATE_BUSY;

  *(__IO uint8_t *)(PCCARD_ATTRIBUTE_SPACE_ADDRESS | ATA_CARD_CONFIGURATION) = 0x01;

  /* Check the PCCARD controller state */
  hpccard->State = HAL_PCCARD_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hpccard);

  return HAL_OK;
}

/**
  * @brief  This function handles PCCARD device interrupt request.
  * @param  hpccard pointer to a PCCARD_HandleTypeDef structure that contains
  *                the configuration information for PCCARD module.
  * @retval HAL status
  */
void HAL_PCCARD_IRQHandler(PCCARD_HandleTypeDef *hpccard)
{
  /* Check PCCARD interrupt Rising edge flag */
  if (__FMC_PCCARD_GET_FLAG(hpccard->Instance, FMC_FLAG_RISING_EDGE))
  {
    /* PCCARD interrupt callback*/
#if (USE_HAL_PCCARD_REGISTER_CALLBACKS == 1)
    hpccard->ItCallback(hpccard);
#else
    HAL_PCCARD_ITCallback(hpccard);
#endif

    /* Clear PCCARD interrupt Rising edge pending bit */
    __FMC_PCCARD_CLEAR_FLAG(hpccard->Instance, FMC_FLAG_RISING_EDGE);
  }

  /* Check PCCARD interrupt Level flag */
  if (__FMC_PCCARD_GET_FLAG(hpccard->Instance, FMC_FLAG_LEVEL))
  {
    /* PCCARD interrupt callback*/
#if (USE_HAL_PCCARD_REGISTER_CALLBACKS == 1)
    hpccard->ItCallback(hpccard);
#else
    HAL_PCCARD_ITCallback(hpccard);
#endif

    /* Clear PCCARD interrupt Level pending bit */
    __FMC_PCCARD_CLEAR_FLAG(hpccard->Instance, FMC_FLAG_LEVEL);
  }

  /* Check PCCARD interrupt Falling edge flag */
  if (__FMC_PCCARD_GET_FLAG(hpccard->Instance, FMC_FLAG_FALLING_EDGE))
  {
    /* PCCARD interrupt callback*/
#if (USE_HAL_PCCARD_REGISTER_CALLBACKS == 1)
    hpccard->ItCallback(hpccard);
#else
    HAL_PCCARD_ITCallback(hpccard);
#endif

    /* Clear PCCARD interrupt Falling edge pending bit */
    __FMC_PCCARD_CLEAR_FLAG(hpccard->Instance, FMC_FLAG_FALLING_EDGE);
  }

  /* Check PCCARD interrupt FIFO empty flag */
  if (__FMC_PCCARD_GET_FLAG(hpccard->Instance, FMC_FLAG_FEMPT))
  {
    /* PCCARD interrupt callback*/
#if (USE_HAL_PCCARD_REGISTER_CALLBACKS == 1)
    hpccard->ItCallback(hpccard);
#else
    HAL_PCCARD_ITCallback(hpccard);
#endif

    /* Clear PCCARD interrupt FIFO empty pending bit */
    __FMC_PCCARD_CLEAR_FLAG(hpccard->Instance, FMC_FLAG_FEMPT);
  }
}

/**
  * @brief  PCCARD interrupt feature callback
  * @param  hpccard pointer to a PCCARD_HandleTypeDef structure that contains
  *                the configuration information for PCCARD module.
  * @retval None
  */
__weak void HAL_PCCARD_ITCallback(PCCARD_HandleTypeDef *hpccard)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpccard);
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_PCCARD_ITCallback could be implemented in the user file
   */
}

#if (USE_HAL_PCCARD_REGISTER_CALLBACKS == 1)
/**
  * @brief  Register a User PCCARD Callback
  *         To be used instead of the weak (surcharged) predefined callback
  * @param hpccard : PCCARD handle
  * @param CallbackId : ID of the callback to be registered
  *        This parameter can be one of the following values:
  *          @arg @ref HAL_PCCARD_MSP_INIT_CB_ID       PCCARD MspInit callback ID
  *          @arg @ref HAL_PCCARD_MSP_DEINIT_CB_ID     PCCARD MspDeInit callback ID
  *          @arg @ref HAL_PCCARD_IT_CB_ID             PCCARD IT callback ID
  * @param pCallback : pointer to the Callback function
  * @retval status
  */
HAL_StatusTypeDef HAL_PCCARD_RegisterCallback(PCCARD_HandleTypeDef *hpccard, HAL_PCCARD_CallbackIDTypeDef CallbackId,
                                              pPCCARD_CallbackTypeDef pCallback)
{
  HAL_StatusTypeDef status = HAL_OK;

  if (pCallback == NULL)
  {
    return HAL_ERROR;
  }

  /* Process locked */
  __HAL_LOCK(hpccard);

  if (hpccard->State == HAL_PCCARD_STATE_READY)
  {
    switch (CallbackId)
    {
      case HAL_PCCARD_MSP_INIT_CB_ID :
        hpccard->MspInitCallback = pCallback;
        break;
      case HAL_PCCARD_MSP_DEINIT_CB_ID :
        hpccard->MspDeInitCallback = pCallback;
        break;
      case HAL_PCCARD_IT_CB_ID :
        hpccard->ItCallback = pCallback;
        break;
      default :
        /* update return status */
        status =  HAL_ERROR;
        break;
    }
  }
  else if (hpccard->State == HAL_PCCARD_STATE_RESET)
  {
    switch (CallbackId)
    {
      case HAL_PCCARD_MSP_INIT_CB_ID :
        hpccard->MspInitCallback = pCallback;
        break;
      case HAL_PCCARD_MSP_DEINIT_CB_ID :
        hpccard->MspDeInitCallback = pCallback;
        break;
      default :
        /* update return status */
        status =  HAL_ERROR;
        break;
    }
  }
  else
  {
    /* update return status */
    status =  HAL_ERROR;
  }

  /* Release Lock */
  __HAL_UNLOCK(hpccard);
  return status;
}

/**
  * @brief  Unregister a User PCCARD Callback
  *         PCCARD Callback is redirected to the weak (surcharged) predefined callback
  * @param hpccard : PCCARD handle
  * @param CallbackId : ID of the callback to be unregistered
  *        This parameter can be one of the following values:
  *          @arg @ref HAL_PCCARD_MSP_INIT_CB_ID       PCCARD MspInit callback ID
  *          @arg @ref HAL_PCCARD_MSP_DEINIT_CB_ID     PCCARD MspDeInit callback ID
  *          @arg @ref HAL_PCCARD_IT_CB_ID             PCCARD IT callback ID
  * @retval status
  */
HAL_StatusTypeDef HAL_PCCARD_UnRegisterCallback(PCCARD_HandleTypeDef *hpccard, HAL_PCCARD_CallbackIDTypeDef CallbackId)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Process locked */
  __HAL_LOCK(hpccard);

  if (hpccard->State == HAL_PCCARD_STATE_READY)
  {
    switch (CallbackId)
    {
      case HAL_PCCARD_MSP_INIT_CB_ID :
        hpccard->MspInitCallback = HAL_PCCARD_MspInit;
        break;
      case HAL_PCCARD_MSP_DEINIT_CB_ID :
        hpccard->MspDeInitCallback = HAL_PCCARD_MspDeInit;
        break;
      case HAL_PCCARD_IT_CB_ID :
        hpccard->ItCallback = HAL_PCCARD_ITCallback;
        break;
      default :
        /* update return status */
        status =  HAL_ERROR;
        break;
    }
  }
  else if (hpccard->State == HAL_PCCARD_STATE_RESET)
  {
    switch (CallbackId)
    {
      case HAL_PCCARD_MSP_INIT_CB_ID :
        hpccard->MspInitCallback = HAL_PCCARD_MspInit;
        break;
      case HAL_PCCARD_MSP_DEINIT_CB_ID :
        hpccard->MspDeInitCallback = HAL_PCCARD_MspDeInit;
        break;
      default :
        /* update return status */
        status =  HAL_ERROR;
        break;
    }
  }
  else
  {
    /* update return status */
    status =  HAL_ERROR;
  }

  /* Release Lock */
  __HAL_UNLOCK(hpccard);
  return status;
}
#endif

/**
  * @}
  */

/** @defgroup PCCARD_Exported_Functions_Group3 State functions
  *  @brief   Peripheral State functions
  *
@verbatim
  ==============================================================================
                      ##### PCCARD State functions #####
  ==============================================================================
  [..]
    This subsection permits to get in run-time the status of the PCCARD controller
    and the data flow.

@endverbatim
  * @{
  */

/**
  * @brief  return the PCCARD controller state
  * @param  hpccard pointer to a PCCARD_HandleTypeDef structure that contains
  *                the configuration information for PCCARD module.
  * @retval HAL state
  */
HAL_PCCARD_StateTypeDef HAL_PCCARD_GetState(PCCARD_HandleTypeDef *hpccard)
{
  return hpccard->State;
}

/**
  * @brief  Get the compact flash memory status
  * @param  hpccard pointer to a PCCARD_HandleTypeDef structure that contains
  *                the configuration information for PCCARD module.
  * @retval New status of the PCCARD operation. This parameter can be:
  *          - CompactFlash_TIMEOUT_ERROR: when the previous operation generate
  *            a Timeout error
  *          - CompactFlash_READY: when memory is ready for the next operation
  */
HAL_PCCARD_StatusTypeDef HAL_PCCARD_GetStatus(PCCARD_HandleTypeDef *hpccard)
{
  uint32_t timeout = PCCARD_TIMEOUT_STATUS, status_pccard = 0U;

  /* Check the PCCARD controller state */
  if (hpccard->State == HAL_PCCARD_STATE_BUSY)
  {
    return HAL_PCCARD_STATUS_ONGOING;
  }

  status_pccard =  *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_STATUS_CMD_ALTERNATE);

  while ((status_pccard == PCCARD_BUSY) && timeout)
  {
    status_pccard =  *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_STATUS_CMD_ALTERNATE);
    timeout--;
  }

  if (timeout == 0U)
  {
    status_pccard =  PCCARD_TIMEOUT_ERROR;
  }

  /* Return the operation status */
  return (HAL_PCCARD_StatusTypeDef) status_pccard;
}

/**
  * @brief  Reads the Compact Flash memory status using the Read status command
  * @param  hpccard pointer to a PCCARD_HandleTypeDef structure that contains
  *                the configuration information for PCCARD module.
  * @retval The status of the Compact Flash memory. This parameter can be:
  *          - CompactFlash_BUSY: when memory is busy
  *          - CompactFlash_READY: when memory is ready for the next operation
  *          - CompactFlash_ERROR: when the previous operation generates error
  */
HAL_PCCARD_StatusTypeDef HAL_PCCARD_ReadStatus(PCCARD_HandleTypeDef *hpccard)
{
  uint8_t data = 0U, status_pccard = PCCARD_BUSY;

  /* Check the PCCARD controller state */
  if (hpccard->State == HAL_PCCARD_STATE_BUSY)
  {
    return HAL_PCCARD_STATUS_ONGOING;
  }

  /* Read status operation */
  data =  *(__IO uint8_t *)(PCCARD_IO_SPACE_PRIMARY_ADDR | ATA_STATUS_CMD_ALTERNATE);

  if ((data & PCCARD_TIMEOUT_ERROR) == PCCARD_TIMEOUT_ERROR)
  {
    status_pccard = PCCARD_TIMEOUT_ERROR;
  }
  else if ((data & PCCARD_READY) == PCCARD_READY)
  {
    status_pccard = PCCARD_READY;
  }

  return (HAL_PCCARD_StatusTypeDef) status_pccard;
}

/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */

#endif /* HAL_PCCARD_MODULE_ENABLED */

/**
  * @}
  */

#endif /* FMC_Bank4) || defined(FSMC_Bank4 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/