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/**

  ******************************************************************************

  * @file    stm32l1xx_hal_sd.c

  * @author  MCD Application Team

  * @brief   SD card HAL module driver.

  *          This file provides firmware functions to manage the following

  *          functionalities of the Secure Digital (SD) peripheral:

  *           + Initialization and de-initialization functions

  *           + IO operation functions

  *           + Peripheral Control functions

  *           + Peripheral State functions

  *

  @verbatim

  ==============================================================================

                        ##### How to use this driver #####

  ==============================================================================

  [..]

    This driver implements a high level communication layer for read and write from/to

    this memory. The needed STM32 hardware resources (SDIO and GPIO) are performed by

    the user in HAL_SD_MspInit() function (MSP layer).

    Basically, the MSP layer configuration should be the same as we provide in the

    examples.

    You can easily tailor this configuration according to hardware resources.

  [..]

    This driver is a generic layered driver for SDIO memories which uses the HAL

    SDIO driver functions to interface with SD and uSD cards devices.

    It is used as follows:

    (#)Initialize the SDIO low level resources by implementing the HAL_SD_MspInit() API:

        (##) Enable the SDIO interface clock using __HAL_RCC_SDIO_CLK_ENABLE();

        (##) SDIO pins configuration for SD card

            (+++) Enable the clock for the SDIO GPIOs using the functions __HAL_RCC_GPIOx_CLK_ENABLE();

            (+++) Configure these SDIO pins as alternate function pull-up using HAL_GPIO_Init()

                  and according to your pin assignment;

        (##) DMA configuration if you need to use DMA process (HAL_SD_ReadBlocks_DMA()

             and HAL_SD_WriteBlocks_DMA() APIs).

            (+++) Enable the DMAx interface clock using __HAL_RCC_DMAx_CLK_ENABLE();

            (+++) Configure the DMA using the function HAL_DMA_Init() with predeclared and filled.

        (##) NVIC configuration if you need to use interrupt process when using DMA transfer.

            (+++) Configure the SDIO and DMA interrupt priorities using functions

                  HAL_NVIC_SetPriority(); DMA priority is superior to SDIO's priority

            (+++) Enable the NVIC DMA and SDIO IRQs using function HAL_NVIC_EnableIRQ()

            (+++) SDIO interrupts are managed using the macros __HAL_SD_ENABLE_IT()

                  and __HAL_SD_DISABLE_IT() inside the communication process.

            (+++) SDIO interrupts pending bits are managed using the macros __HAL_SD_GET_IT()

                  and __HAL_SD_CLEAR_IT()

        (##) NVIC configuration if you need to use interrupt process (HAL_SD_ReadBlocks_IT()

             and HAL_SD_WriteBlocks_IT() APIs).

            (+++) Configure the SDIO interrupt priorities using function HAL_NVIC_SetPriority();

            (+++) Enable the NVIC SDIO IRQs using function HAL_NVIC_EnableIRQ()

            (+++) SDIO interrupts are managed using the macros __HAL_SD_ENABLE_IT()

                  and __HAL_SD_DISABLE_IT() inside the communication process.

            (+++) SDIO interrupts pending bits are managed using the macros __HAL_SD_GET_IT()

                  and __HAL_SD_CLEAR_IT()

    (#) At this stage, you can perform SD read/write/erase operations after SD card initialization

  *** SD Card Initialization and configuration ***

  ================================================

  [..]

    To initialize the SD Card, use the HAL_SD_Init() function. It Initializes

    SDIO Peripheral(STM32 side) and the SD Card, and put it into StandBy State (Ready for data transfer).

    This function provide the following operations:

    (#) Apply the SD Card initialization process at 400KHz and check the SD Card

        type (Standard Capacity or High Capacity). You can change or adapt this

        frequency by adjusting the "ClockDiv" field.

        The SD Card frequency (SDIO_CK) is computed as follows:

           SDIO_CK = SDIOCLK / (ClockDiv + 2)

        In initialization mode and according to the SD Card standard,

        make sure that the SDIO_CK frequency doesn't exceed 400KHz.

        This phase of initialization is done through SDIO_Init() and

        SDIO_PowerState_ON() SDIO low level APIs.

    (#) Initialize the SD card. The API used is HAL_SD_InitCard().

        This phase allows the card initialization and identification

        and check the SD Card type (Standard Capacity or High Capacity)

        The initialization flow is compatible with SD standard.

        This API (HAL_SD_InitCard()) could be used also to reinitialize the card in case

        of plug-off plug-in.

    (#) Configure the SD Card Data transfer frequency. You can change or adapt this

        frequency by adjusting the "ClockDiv" field.

        In transfer mode and according to the SD Card standard, make sure that the

        SDIO_CK frequency doesn't exceed 25MHz and 50MHz in High-speed mode switch.

        To be able to use a frequency higher than 24MHz, you should use the SDIO

        peripheral in bypass mode. Refer to the corresponding reference manual

        for more details.

    (#) Select the corresponding SD Card according to the address read with the step 2.

    (#) Configure the SD Card in wide bus mode: 4-bits data.

  *** SD Card Read operation ***

  ==============================

  [..]

    (+) You can read from SD card in polling mode by using function HAL_SD_ReadBlocks().

        This function support only 512-bytes block length (the block size should be

        chosen as 512 bytes).

        You can choose either one block read operation or multiple block read operation

        by adjusting the "NumberOfBlocks" parameter.

        After this, you have to ensure that the transfer is done correctly. The check is done

        through HAL_SD_GetCardState() function for SD card state.

    (+) You can read from SD card in DMA mode by using function HAL_SD_ReadBlocks_DMA().

        This function support only 512-bytes block length (the block size should be

        chosen as 512 bytes).

        You can choose either one block read operation or multiple block read operation

        by adjusting the "NumberOfBlocks" parameter.

        After this, you have to ensure that the transfer is done correctly. The check is done

        through HAL_SD_GetCardState() function for SD card state.

        You could also check the DMA transfer process through the SD Rx interrupt event.

    (+) You can read from SD card in Interrupt mode by using function HAL_SD_ReadBlocks_IT().

        This function support only 512-bytes block length (the block size should be

        chosen as 512 bytes).

        You can choose either one block read operation or multiple block read operation

        by adjusting the "NumberOfBlocks" parameter.

        After this, you have to ensure that the transfer is done correctly. The check is done

        through HAL_SD_GetCardState() function for SD card state.

        You could also check the IT transfer process through the SD Rx interrupt event.

  *** SD Card Write operation ***

  ===============================

  [..]

    (+) You can write to SD card in polling mode by using function HAL_SD_WriteBlocks().

        This function support only 512-bytes block length (the block size should be

        chosen as 512 bytes).

        You can choose either one block read operation or multiple block read operation

        by adjusting the "NumberOfBlocks" parameter.

        After this, you have to ensure that the transfer is done correctly. The check is done

        through HAL_SD_GetCardState() function for SD card state.

    (+) You can write to SD card in DMA mode by using function HAL_SD_WriteBlocks_DMA().

        This function support only 512-bytes block length (the block size should be

        chosen as 512 bytes).

        You can choose either one block read operation or multiple block read operation

        by adjusting the "NumberOfBlocks" parameter.

        After this, you have to ensure that the transfer is done correctly. The check is done

        through HAL_SD_GetCardState() function for SD card state.

        You could also check the DMA transfer process through the SD Tx interrupt event.

    (+) You can write to SD card in Interrupt mode by using function HAL_SD_WriteBlocks_IT().

        This function support only 512-bytes block length (the block size should be

        chosen as 512 bytes).

        You can choose either one block read operation or multiple block read operation

        by adjusting the "NumberOfBlocks" parameter.

        After this, you have to ensure that the transfer is done correctly. The check is done

        through HAL_SD_GetCardState() function for SD card state.

        You could also check the IT transfer process through the SD Tx interrupt event.

  *** SD card status ***

  ======================

  [..]

    (+) The SD Status contains status bits that are related to the SD Memory

        Card proprietary features. To get SD card status use the HAL_SD_GetCardStatus().

  *** SD card information ***

  ===========================

  [..]

    (+) To get SD card information, you can use the function HAL_SD_GetCardInfo().

        It returns useful information about the SD card such as block size, card type,

        block number ...

  *** SD card CSD register ***

  ============================

    (+) The HAL_SD_GetCardCSD() API allows to get the parameters of the CSD register.

        Some of the CSD parameters are useful for card initialization and identification.

  *** SD card CID register ***

  ============================

    (+) The HAL_SD_GetCardCID() API allows to get the parameters of the CID register.

        Some of the CSD parameters are useful for card initialization and identification.

  *** SD HAL driver macros list ***

  ==================================

  [..]

    Below the list of most used macros in SD HAL driver.

    (+) __HAL_SD_ENABLE : Enable the SD device

    (+) __HAL_SD_DISABLE : Disable the SD device

    (+) __HAL_SD_DMA_ENABLE: Enable the SDIO DMA transfer

    (+) __HAL_SD_DMA_DISABLE: Disable the SDIO DMA transfer

    (+) __HAL_SD_ENABLE_IT: Enable the SD device interrupt

    (+) __HAL_SD_DISABLE_IT: Disable the SD device interrupt

    (+) __HAL_SD_GET_FLAG:Check whether the specified SD flag is set or not

    (+) __HAL_SD_CLEAR_FLAG: Clear the SD's pending flags

    (@) You can refer to the SD HAL driver header file for more useful macros

  *** Callback registration ***

  =============================================

  [..]

    The compilation define USE_HAL_SD_REGISTER_CALLBACKS when set to 1

    allows the user to configure dynamically the driver callbacks.

    Use Functions @ref HAL_SD_RegisterCallback() to register a user callback,

    it allows to register following callbacks:

      (+) TxCpltCallback : callback when a transmission transfer is completed.

      (+) RxCpltCallback : callback when a reception transfer is completed.

      (+) ErrorCallback : callback when error occurs.

      (+) AbortCpltCallback : callback when abort is completed.

      (+) MspInitCallback    : SD MspInit.

      (+) MspDeInitCallback  : SD MspDeInit.

    This function takes as parameters the HAL peripheral handle, the Callback ID

    and a pointer to the user callback function.

    Use function @ref HAL_SD_UnRegisterCallback() to reset a callback to the default

    weak (surcharged) function. It allows to reset following callbacks:

      (+) TxCpltCallback : callback when a transmission transfer is completed.

      (+) RxCpltCallback : callback when a reception transfer is completed.

      (+) ErrorCallback : callback when error occurs.

      (+) AbortCpltCallback : callback when abort is completed.

      (+) MspInitCallback    : SD MspInit.

      (+) MspDeInitCallback  : SD MspDeInit.

    This function) takes as parameters the HAL peripheral handle and the Callback ID.

    By default, after the @ref HAL_SD_Init and if the state is HAL_SD_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 @ref HAL_SD_Init

    and @ref  HAL_SD_DeInit only when these callbacks are null (not registered beforehand).

    If not, MspInit or MspDeInit are not null, the @ref HAL_SD_Init and @ref HAL_SD_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 @ref HAL_SD_RegisterCallback before calling @ref HAL_SD_DeInit

    or @ref HAL_SD_Init function.

    When The compilation define USE_HAL_SD_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) 2018 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 "stm32l1xx_hal.h"

#if defined(SDIO)

/** @addtogroup STM32L1xx_HAL_Driver

  * @{

  */

/** @addtogroup SD

  * @{

  */

#ifdef HAL_SD_MODULE_ENABLED

/* Private typedef -----------------------------------------------------------*/

/* Private define ------------------------------------------------------------*/

/** @addtogroup SD_Private_Defines

  * @{

  */

/**

  * @}

  */

/* Private macro -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

/* Private function prototypes -----------------------------------------------*/

/* Private functions ---------------------------------------------------------*/

/** @defgroup SD_Private_Functions SD Private Functions

  * @{

  */

static uint32_t SD_InitCard(SD_HandleTypeDef *hsd);

static uint32_t SD_PowerON(SD_HandleTypeDef *hsd);

static uint32_t SD_SendSDStatus(SD_HandleTypeDef *hsd, uint32_t *pSDstatus);

static uint32_t SD_SendStatus(SD_HandleTypeDef *hsd, uint32_t *pCardStatus);

static uint32_t SD_WideBus_Enable(SD_HandleTypeDef *hsd);

static uint32_t SD_WideBus_Disable(SD_HandleTypeDef *hsd);

static uint32_t SD_FindSCR(SD_HandleTypeDef *hsd, uint32_t *pSCR);

static void SD_PowerOFF(SD_HandleTypeDef *hsd);

static void SD_Write_IT(SD_HandleTypeDef *hsd);

static void SD_Read_IT(SD_HandleTypeDef *hsd);

static void SD_DMATransmitCplt(DMA_HandleTypeDef *hdma);

static void SD_DMAReceiveCplt(DMA_HandleTypeDef *hdma);

static void SD_DMAError(DMA_HandleTypeDef *hdma);

static void SD_DMATxAbort(DMA_HandleTypeDef *hdma);

static void SD_DMARxAbort(DMA_HandleTypeDef *hdma);

/**

  * @}

  */

/* Exported functions --------------------------------------------------------*/

/** @addtogroup SD_Exported_Functions

  * @{

  */

/** @addtogroup SD_Exported_Functions_Group1

 *  @brief   Initialization and de-initialization functions

 *

@verbatim

  ==============================================================================

          ##### Initialization and de-initialization functions #####

  ==============================================================================

  [..]

    This section provides functions allowing to initialize/de-initialize the SD

    card device to be ready for use.

@endverbatim

  * @{

  */

/**

  * @brief  Initializes the SD according to the specified parameters in the

            SD_HandleTypeDef and create the associated handle.

  * @param  hsd: Pointer to the SD handle

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_SD_Init(SD_HandleTypeDef *hsd)

{

  /* Check the SD handle allocation */

  if(hsd == NULL)

  {

    return HAL_ERROR;

  }

  /* Check the parameters */

  assert_param(IS_SDIO_ALL_INSTANCE(hsd->Instance));

  assert_param(IS_SDIO_CLOCK_EDGE(hsd->Init.ClockEdge));

  assert_param(IS_SDIO_CLOCK_BYPASS(hsd->Init.ClockBypass));

  assert_param(IS_SDIO_CLOCK_POWER_SAVE(hsd->Init.ClockPowerSave));

  assert_param(IS_SDIO_BUS_WIDE(hsd->Init.BusWide));

  assert_param(IS_SDIO_HARDWARE_FLOW_CONTROL(hsd->Init.HardwareFlowControl));

  assert_param(IS_SDIO_CLKDIV(hsd->Init.ClockDiv));

  if(hsd->State == HAL_SD_STATE_RESET)

  {

    /* Allocate lock resource and initialize it */

    hsd->Lock = HAL_UNLOCKED;

#if defined (USE_HAL_SD_REGISTER_CALLBACKS) && (USE_HAL_SD_REGISTER_CALLBACKS == 1U)

    /* Reset Callback pointers in HAL_SD_STATE_RESET only */

    hsd->TxCpltCallback    = HAL_SD_TxCpltCallback;

    hsd->RxCpltCallback    = HAL_SD_RxCpltCallback;

    hsd->ErrorCallback     = HAL_SD_ErrorCallback;

    hsd->AbortCpltCallback = HAL_SD_AbortCallback;

    if(hsd->MspInitCallback == NULL)

    {

      hsd->MspInitCallback = HAL_SD_MspInit;

    }

    /* Init the low level hardware */

    hsd->MspInitCallback(hsd);

#else

    /* Init the low level hardware : GPIO, CLOCK, CORTEX...etc */

    HAL_SD_MspInit(hsd);

#endif /* USE_HAL_SD_REGISTER_CALLBACKS */

  }

  hsd->State = HAL_SD_STATE_BUSY;

  /* Initialize the Card parameters */

  if (HAL_SD_InitCard(hsd) != HAL_OK)

  {

    return HAL_ERROR;

  }

  /* Initialize the error code */

  hsd->ErrorCode = HAL_SD_ERROR_NONE;

  /* Initialize the SD operation */

  hsd->Context = SD_CONTEXT_NONE;

  /* Initialize the SD state */

  hsd->State = HAL_SD_STATE_READY;

  return HAL_OK;

}

/**

  * @brief  Initializes the SD Card.

  * @param  hsd: Pointer to SD handle

  * @note   This function initializes the SD card. It could be used when a card

            re-initialization is needed.

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_SD_InitCard(SD_HandleTypeDef *hsd)

{

  uint32_t errorstate;

  HAL_StatusTypeDef status;

  SD_InitTypeDef Init;

  /* Default SDIO peripheral configuration for SD card initialization */

  Init.ClockEdge           = SDIO_CLOCK_EDGE_RISING;

  Init.ClockBypass         = SDIO_CLOCK_BYPASS_DISABLE;

  Init.ClockPowerSave      = SDIO_CLOCK_POWER_SAVE_DISABLE;

  Init.BusWide             = SDIO_BUS_WIDE_1B;

  Init.HardwareFlowControl = SDIO_HARDWARE_FLOW_CONTROL_DISABLE;

  Init.ClockDiv            = SDIO_INIT_CLK_DIV;

  /* Initialize SDIO peripheral interface with default configuration */

  status = SDIO_Init(hsd->Instance, Init);

  if(status != HAL_OK)

  {

    return HAL_ERROR;

  }

  /* Disable SDIO Clock */

  __HAL_SD_DISABLE(hsd);

  /* Set Power State to ON */

  status = SDIO_PowerState_ON(hsd->Instance);

  if(status != HAL_OK)

  {

    return HAL_ERROR;

  }

  /* Enable SDIO Clock */

  __HAL_SD_ENABLE(hsd);

  /* Identify card operating voltage */

  errorstate = SD_PowerON(hsd);

  if(errorstate != HAL_SD_ERROR_NONE)

  {

    hsd->State = HAL_SD_STATE_READY;

    hsd->ErrorCode |= errorstate;

    return HAL_ERROR;

  }

  /* Card initialization */

  errorstate = SD_InitCard(hsd);

  if(errorstate != HAL_SD_ERROR_NONE)

  {

    hsd->State = HAL_SD_STATE_READY;

    hsd->ErrorCode |= errorstate;

    return HAL_ERROR;

  }

  return HAL_OK;

}

/**

  * @brief  De-Initializes the SD card.

  * @param  hsd: Pointer to SD handle

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_SD_DeInit(SD_HandleTypeDef *hsd)

{

  /* Check the SD handle allocation */

  if(hsd == NULL)

  {

    return HAL_ERROR;

  }

  /* Check the parameters */

  assert_param(IS_SDIO_ALL_INSTANCE(hsd->Instance));

  hsd->State = HAL_SD_STATE_BUSY;

  /* Set SD power state to off */

  SD_PowerOFF(hsd);

#if defined (USE_HAL_SD_REGISTER_CALLBACKS) && (USE_HAL_SD_REGISTER_CALLBACKS == 1U)

  if(hsd->MspDeInitCallback == NULL)

  {

    hsd->MspDeInitCallback = HAL_SD_MspDeInit;

  }

  /* DeInit the low level hardware */

  hsd->MspDeInitCallback(hsd);

#else

  /* De-Initialize the MSP layer */

  HAL_SD_MspDeInit(hsd);

#endif /* USE_HAL_SD_REGISTER_CALLBACKS */

  hsd->ErrorCode = HAL_SD_ERROR_NONE;

  hsd->State = HAL_SD_STATE_RESET;

  return HAL_OK;

}

/**

  * @brief  Initializes the SD MSP.

  * @param  hsd: Pointer to SD handle

  * @retval None

  */

__weak void HAL_SD_MspInit(SD_HandleTypeDef *hsd)

{

  /* Prevent unused argument(s) compilation warning */

  UNUSED(hsd);

  /* NOTE : This function should not be modified, when the callback is needed,

            the HAL_SD_MspInit could be implemented in the user file

   */

}

/**

  * @brief  De-Initialize SD MSP.

  * @param  hsd: Pointer to SD handle

  * @retval None

  */

__weak void HAL_SD_MspDeInit(SD_HandleTypeDef *hsd)

{

  /* Prevent unused argument(s) compilation warning */

  UNUSED(hsd);

  /* NOTE : This function should not be modified, when the callback is needed,

            the HAL_SD_MspDeInit could be implemented in the user file

   */

}

/**

  * @}

  */

/** @addtogroup SD_Exported_Functions_Group2

 *  @brief   Data transfer functions

 *

@verbatim

  ==============================================================================

                        ##### IO operation functions #####

  ==============================================================================

  [..]

    This subsection provides a set of functions allowing to manage the data

    transfer from/to SD card.

@endverbatim

  * @{

  */

/**

  * @brief  Reads block(s) from a specified address in a card. The Data transfer

  *         is managed by polling mode.

  * @note   This API should be followed by a check on the card state through

  *         HAL_SD_GetCardState().

  * @param  hsd: Pointer to SD handle

  * @param  pData: pointer to the buffer that will contain the received data

  * @param  BlockAdd: Block Address from where data is to be read

  * @param  NumberOfBlocks: Number of SD blocks to read

  * @param  Timeout: Specify timeout value

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_SD_ReadBlocks(SD_HandleTypeDef *hsd, uint8_t *pData, uint32_t BlockAdd, uint32_t NumberOfBlocks, uint32_t Timeout)

{

  SDIO_DataInitTypeDef config;

  uint32_t errorstate;

  uint32_t tickstart = HAL_GetTick();

  uint32_t count, data, dataremaining;

  uint32_t add = BlockAdd;

  uint8_t *tempbuff = pData;

  if(NULL == pData)

  {

    hsd->ErrorCode |= HAL_SD_ERROR_PARAM;

    return HAL_ERROR;

  }

  if(hsd->State == HAL_SD_STATE_READY)

  {

    hsd->ErrorCode = HAL_SD_ERROR_NONE;

    if((add + NumberOfBlocks) > (hsd->SdCard.LogBlockNbr))

    {

      hsd->ErrorCode |= HAL_SD_ERROR_ADDR_OUT_OF_RANGE;

      return HAL_ERROR;

    }

    hsd->State = HAL_SD_STATE_BUSY;

    /* Initialize data control register */

    hsd->Instance->DCTRL = 0U;

    if(hsd->SdCard.CardType != CARD_SDHC_SDXC)

    {

      add *= 512U;

    }

    /* Set Block Size for Card */

    errorstate = SDMMC_CmdBlockLength(hsd->Instance, BLOCKSIZE);

    if(errorstate != HAL_SD_ERROR_NONE)

    {

      /* Clear all the static flags */

      __HAL_SD_CLEAR_FLAG(hsd, SDIO_STATIC_FLAGS);

      hsd->ErrorCode |= errorstate;

      hsd->State = HAL_SD_STATE_READY;

      return HAL_ERROR;

    }

    /* Configure the SD DPSM (Data Path State Machine) */

    config.DataTimeOut   = SDMMC_DATATIMEOUT;

    config.DataLength    = NumberOfBlocks * BLOCKSIZE;

    config.DataBlockSize = SDIO_DATABLOCK_SIZE_512B;

    config.TransferDir   = SDIO_TRANSFER_DIR_TO_SDIO;

    config.TransferMode  = SDIO_TRANSFER_MODE_BLOCK;

    config.DPSM          = SDIO_DPSM_ENABLE;

    (void)SDIO_ConfigData(hsd->Instance, &config);

    /* Read block(s) in polling mode */

    if(NumberOfBlocks > 1U)

    {

      hsd->Context = SD_CONTEXT_READ_MULTIPLE_BLOCK;

      /* Read Multi Block command */

      errorstate = SDMMC_CmdReadMultiBlock(hsd->Instance, add);

    }

    else

    {

      hsd->Context = SD_CONTEXT_READ_SINGLE_BLOCK;

      /* Read Single Block command */

      errorstate = SDMMC_CmdReadSingleBlock(hsd->Instance, add);

    }

    if(errorstate != HAL_SD_ERROR_NONE)

    {

      /* Clear all the static flags */

      __HAL_SD_CLEAR_FLAG(hsd, SDIO_STATIC_FLAGS);

      hsd->ErrorCode |= errorstate;

      hsd->State = HAL_SD_STATE_READY;

      hsd->Context = SD_CONTEXT_NONE;

      return HAL_ERROR;

    }

    /* Poll on SDIO flags */

    dataremaining = config.DataLength;

    while(!__HAL_SD_GET_FLAG(hsd, SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DATAEND | SDIO_FLAG_STBITERR))

    {

      if(__HAL_SD_GET_FLAG(hsd, SDIO_FLAG_RXFIFOHF) && (dataremaining > 0U))

      {

        /* Read data from SDIO Rx FIFO */

        for(count = 0U; count < 8U; count++)

        {

          data = SDIO_ReadFIFO(hsd->Instance);

          *tempbuff = (uint8_t)(data & 0xFFU);

          tempbuff++;

          dataremaining--;

          *tempbuff = (uint8_t)((data >> 8U) & 0xFFU);

          tempbuff++;

          dataremaining--;

          *tempbuff = (uint8_t)((data >> 16U) & 0xFFU);

          tempbuff++;

          dataremaining--;

          *tempbuff = (uint8_t)((data >> 24U) & 0xFFU);

          tempbuff++;

          dataremaining--;

        }

      }

      if(((HAL_GetTick()-tickstart) >=  Timeout) || (Timeout == 0U))

      {

        /* Clear all the static flags */

        __HAL_SD_CLEAR_FLAG(hsd, SDIO_STATIC_FLAGS);

        hsd->ErrorCode |= HAL_SD_ERROR_TIMEOUT;

        hsd->State= HAL_SD_STATE_READY;

        hsd->Context = SD_CONTEXT_NONE;

        return HAL_TIMEOUT;

      }

    }

    /* Send stop transmission command in case of multiblock read */

    if(__HAL_SD_GET_FLAG(hsd, SDIO_FLAG_DATAEND) && (NumberOfBlocks > 1U))

    {

      if(hsd->SdCard.CardType != CARD_SECURED)

      {

        /* Send stop transmission command */

        errorstate = SDMMC_CmdStopTransfer(hsd->Instance);

        if(errorstate != HAL_SD_ERROR_NONE)

        {

          /* Clear all the static flags */

          __HAL_SD_CLEAR_FLAG(hsd, SDIO_STATIC_FLAGS);

          hsd->ErrorCode |= errorstate;

          hsd->State = HAL_SD_STATE_READY;

          hsd->Context = SD_CONTEXT_NONE;

          return HAL_ERROR;

        }

      }

    }

    /* Get error state */

    if(__HAL_SD_GET_FLAG(hsd, SDIO_FLAG_DTIMEOUT))

    {

      /* Clear all the static flags */

      __HAL_SD_CLEAR_FLAG(hsd, SDIO_STATIC_FLAGS);

      hsd->ErrorCode |= HAL_SD_ERROR_DATA_TIMEOUT;

      hsd->State = HAL_SD_STATE_READY;

      hsd->Context = SD_CONTEXT_NONE;

      return HAL_ERROR;

    }

    else if(__HAL_SD_GET_FLAG(hsd, SDIO_FLAG_DCRCFAIL))

    {

      /* Clear all the static flags */

      __HAL_SD_CLEAR_FLAG(hsd, SDIO_STATIC_FLAGS);

      hsd->ErrorCode |= HAL_SD_ERROR_DATA_CRC_FAIL;

      hsd->State = HAL_SD_STATE_READY;

      hsd->Context = SD_CONTEXT_NONE;

      return HAL_ERROR;

    }

    else if(__HAL_SD_GET_FLAG(hsd, SDIO_FLAG_RXOVERR))

    {

      /* Clear all the static flags */

      __HAL_SD_CLEAR_FLAG(hsd, SDIO_STATIC_FLAGS);

      hsd->ErrorCode |= HAL_SD_ERROR_RX_OVERRUN;

      hsd->State = HAL_SD_STATE_READY;

      hsd->Context = SD_CONTEXT_NONE;

      return HAL_ERROR;

    }

    else

    {

      /* Nothing to do */

    }

    /* Empty FIFO if there is still any data */

    while ((__HAL_SD_GET_FLAG(hsd, SDIO_FLAG_RXDAVL)) && (dataremaining > 0U))

    {

      data = SDIO_ReadFIFO(hsd->Instance);

      *tempbuff = (uint8_t)(data & 0xFFU);

      tempbuff++;

      dataremaining--;

      *tempbuff = (uint8_t)((data >> 8U) & 0xFFU);

      tempbuff++;

      dataremaining--;

      *tempbuff = (uint8_t)((data >> 16U) & 0xFFU);

      tempbuff++;

      dataremaining--;

      *tempbuff = (uint8_t)((data >> 24U) & 0xFFU);

      tempbuff++;

      dataremaining--;

      if(((HAL_GetTick()-tickstart) >=  Timeout) || (Timeout == 0U))

      {

        /* Clear all the static flags */

        __HAL_SD_CLEAR_FLAG(hsd, SDIO_STATIC_FLAGS);

        hsd->ErrorCode |= HAL_SD_ERROR_TIMEOUT;

        hsd->State= HAL_SD_STATE_READY;

        hsd->Context = SD_CONTEXT_NONE;

        return HAL_ERROR;

      }

    }

    /* Clear all the static flags */

    __HAL_SD_CLEAR_FLAG(hsd, SDIO_STATIC_DATA_FLAGS);

    hsd->State = HAL_SD_STATE_READY;

    return HAL_OK;

  }

  else

  {

    hsd->ErrorCode |= HAL_SD_ERROR_BUSY;

    return HAL_ERROR;

  }

}

/**

  * @brief  Allows to write block(s) to a specified address in a card. The Data

  *         transfer is managed by polling mode.

  * @note   This API should be followed by a check on the card state through

  *         HAL_SD_GetCardState().

  * @param  hsd: Pointer to SD handle

  * @param  pData: pointer to the buffer that will contain the data to transmit

  * @param  BlockAdd: Block Address where data will be written

  * @param  NumberOfBlocks: Number of SD blocks to write

  * @param  Timeout: Specify timeout value

  * @note   Due to limitation "SDIO hardware flow control" indicated in Errata Sheet :

  *         In 4-bits bus wide mode, do not use this API otherwise underrun will occur and

  *         there is not possibility to activate the flow control.

  *         Use DMA mode when using 4-bits bus wide mode or decrease the frequency.

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_SD_WriteBlocks(SD_HandleTypeDef *hsd, uint8_t *pData, uint32_t BlockAdd, uint32_t NumberOfBlocks, uint32_t Timeout)

{

  SDIO_DataInitTypeDef config;

  uint32_t errorstate;

  uint32_t tickstart = HAL_GetTick();

  uint32_t count, data, dataremaining;

  uint32_t add = BlockAdd;

  uint8_t *tempbuff = pData;

  if(NULL == pData)

  {

    hsd->ErrorCode |= HAL_SD_ERROR_PARAM;

    return HAL_ERROR;

  }

  if(hsd->State == HAL_SD_STATE_READY)

  {

    hsd->ErrorCode = HAL_SD_ERROR_NONE;

    if((add + NumberOfBlocks) > (hsd->SdCard.LogBlockNbr))

    {

      hsd->ErrorCode |= HAL_SD_ERROR_ADDR_OUT_OF_RANGE;

      return HAL_ERROR;

    }

    hsd->State = HAL_SD_STATE_BUSY;

    /* Initialize data control register */

    hsd->Instance->DCTRL = 0U;

    if(hsd->SdCard.CardType != CARD_SDHC_SDXC)

    {

      add *= 512U;

    }

    /* Set Block Size for Card */

    errorstate = SDMMC_CmdBlockLength(hsd->Instance, BLOCKSIZE);

    if(errorstate != HAL_SD_ERROR_NONE)

    {

      /* Clear all the static flags */

      __HAL_SD_CLEAR_FLAG(hsd, SDIO_STATIC_FLAGS);

      hsd->ErrorCode |= errorstate;

      hsd->State = HAL_SD_STATE_READY;

      return HAL_ERROR;

    }

    /* Configure the SD DPSM (Data Path State Machine) */

    config.DataTimeOut   = SDMMC_DATATIMEOUT;

    config.DataLength    = NumberOfBlocks * BLOCKSIZE;

    config.DataBlockSize = SDIO_DATABLOCK_SIZE_512B;

    config.TransferDir   = SDIO_TRANSFER_DIR_TO_CARD;

    config.TransferMode  = SDIO_TRANSFER_MODE_BLOCK;

    config.DPSM          = SDIO_DPSM_ENABLE;

    (void)SDIO_ConfigData(hsd->Instance, &config);

    /* Write Blocks in Polling mode */

    if(NumberOfBlocks > 1U)

    {

      hsd->Context = SD_CONTEXT_WRITE_MULTIPLE_BLOCK;

      /* Write Multi Block command */

      errorstate = SDMMC_CmdWriteMultiBlock(hsd->Instance, add);

    }

    else

    {

      hsd->Context = SD_CONTEXT_WRITE_SINGLE_BLOCK;

      /* Write Single Block command */

      errorstate = SDMMC_CmdWriteSingleBlock(hsd->Instance, add);

    }

    if(errorstate != HAL_SD_ERROR_NONE)

    {

      /* Clear all the static flags */

      __HAL_SD_CLEAR_FLAG(hsd, SDIO_STATIC_FLAGS);

      hsd->ErrorCode |= errorstate;

      hsd->State = HAL_SD_STATE_READY;

      hsd->Context = SD_CONTEXT_NONE;

      return HAL_ERROR;

    }

    /* Write block(s) in polling mode */

    dataremaining = config.DataLength;

    while(!__HAL_SD_GET_FLAG(hsd, SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DATAEND | SDIO_FLAG_STBITERR))

    {

      if(__HAL_SD_GET_FLAG(hsd, SDIO_FLAG_TXFIFOHE) && (dataremaining > 0U))

      {

        /* Write data to SDIO Tx FIFO */

        for(count = 0U; count < 8U; count++)

        {

          data = (uint32_t)(*tempbuff);

          tempbuff++;

          dataremaining--;

          data |= ((uint32_t)(*tempbuff) << 8U);

          tempbuff++;

          dataremaining--;

          data |= ((uint32_t)(*tempbuff) << 16U);

          tempbuff++;

          dataremaining--;

          data |= ((uint32_t)(*tempbuff) << 24U);

          tempbuff++;

          dataremaining--;

          (void)SDIO_WriteFIFO(hsd->Instance, &data);

        }

      }

      if(((HAL_GetTick()-tickstart) >=  Timeout) || (Timeout == 0U))