update sdcard driver according to stm32 radio project.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@509 bbd45198-f89e-11dd-88c7-29a3b14d5316

2 files changed, 3467 insertions, 3430 deletions

diff --git a/bsp/stm3210/sdcard.c b/bsp/stm3210/sdcard.c
index 386db31793..c58f04a5f7 100644
--- a/bsp/stm3210/sdcard.c
+++ b/bsp/stm3210/sdcard.c
@@ -1,3153 +1,3190 @@
-/**
-  ******************************************************************************
-  * @file    SDIO/sdcard.c
-  * @author  MCD Application Team
-  * @version V3.1.0
-  * @date    06/19/2009
-  * @brief   This file provides all the SD Card driver firmware functions.
-  ******************************************************************************
-  * @copy
-  *
-  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
-  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
-  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
-  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
-  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
-  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
-  *
-  * <h2><center>&copy; COPYRIGHT 2009 STMicroelectronics</center></h2>
-  */
-
-/* Includes ------------------------------------------------------------------*/
-#include "sdcard.h"
-#include <stm32f10x_dma.h>
-#include <stm32f10x_sdio.h>

-
+/**

+  ******************************************************************************

+  * @file    SDIO/sdcard.c

+  * @author  MCD Application Team

+  * @version V3.1.2

+  * @date    09/28/2009

+  * @brief   This file provides all the SD Card driver firmware functions.

+  ******************************************************************************

+  * @copy

+  *

+  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE

+  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY

+  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING

+  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE

+  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+  *

+  * <h2><center>&copy; COPYRIGHT 2009 STMicroelectronics</center></h2>

+  */

+

+/* Includes ------------------------------------------------------------------*/

+#include "sdcard.h"

 #include <rtthread.h>

-
-/** @addtogroup STM32F10x_StdPeriph_Examples
-  * @{
-  */
-
-/** @addtogroup SDIO_Example
-  * @{
-  */
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-#define NULL 0
-#define SDIO_STATIC_FLAGS               ((uint32_t)0x000005FF)
-#define SDIO_CMD0TIMEOUT                ((uint32_t)0x00002710)
-#define SDIO_FIFO_Address               ((uint32_t)0x40018080)
-
-/* Mask for errors Card Status R1 (OCR Register) */
-#define SD_OCR_ADDR_OUT_OF_RANGE        ((uint32_t)0x80000000)
-#define SD_OCR_ADDR_MISALIGNED          ((uint32_t)0x40000000)
-#define SD_OCR_BLOCK_LEN_ERR            ((uint32_t)0x20000000)
-#define SD_OCR_ERASE_SEQ_ERR            ((uint32_t)0x10000000)
-#define SD_OCR_BAD_ERASE_PARAM          ((uint32_t)0x08000000)
-#define SD_OCR_WRITE_PROT_VIOLATION     ((uint32_t)0x04000000)
-#define SD_OCR_LOCK_UNLOCK_FAILED       ((uint32_t)0x01000000)
-#define SD_OCR_COM_CRC_FAILED           ((uint32_t)0x00800000)
-#define SD_OCR_ILLEGAL_CMD              ((uint32_t)0x00400000)
-#define SD_OCR_CARD_ECC_FAILED          ((uint32_t)0x00200000)
-#define SD_OCR_CC_ERROR                 ((uint32_t)0x00100000)
-#define SD_OCR_GENERAL_UNKNOWN_ERROR    ((uint32_t)0x00080000)
-#define SD_OCR_STREAM_READ_UNDERRUN     ((uint32_t)0x00040000)
-#define SD_OCR_STREAM_WRITE_OVERRUN     ((uint32_t)0x00020000)
-#define SD_OCR_CID_CSD_OVERWRIETE       ((uint32_t)0x00010000)
-#define SD_OCR_WP_ERASE_SKIP            ((uint32_t)0x00008000)
-#define SD_OCR_CARD_ECC_DISABLED        ((uint32_t)0x00004000)
-#define SD_OCR_ERASE_RESET              ((uint32_t)0x00002000)
-#define SD_OCR_AKE_SEQ_ERROR            ((uint32_t)0x00000008)
-#define SD_OCR_ERRORBITS                ((uint32_t)0xFDFFE008)
-
-/* Masks for R6 Response */
-#define SD_R6_GENERAL_UNKNOWN_ERROR     ((uint32_t)0x00002000)
-#define SD_R6_ILLEGAL_CMD               ((uint32_t)0x00004000)
-#define SD_R6_COM_CRC_FAILED            ((uint32_t)0x00008000)
-
-#define SD_VOLTAGE_WINDOW_SD            ((uint32_t)0x80100000)
-#define SD_HIGH_CAPACITY                ((uint32_t)0x40000000)
-#define SD_STD_CAPACITY                 ((uint32_t)0x00000000)
-#define SD_CHECK_PATTERN                ((uint32_t)0x000001AA)
-#define SD_VOLTAGE_WINDOW_MMC           ((uint32_t)0x80FF8000)
-
-#define SD_MAX_VOLT_TRIAL               ((uint32_t)0x0000FFFF)
-#define SD_ALLZERO                      ((uint32_t)0x00000000)
-
-#define SD_WIDE_BUS_SUPPORT             ((uint32_t)0x00040000)
-#define SD_SINGLE_BUS_SUPPORT           ((uint32_t)0x00010000)
-#define SD_CARD_LOCKED                  ((uint32_t)0x02000000)
-#define SD_CARD_PROGRAMMING             ((uint32_t)0x00000007)
-#define SD_CARD_RECEIVING               ((uint32_t)0x00000006)
-#define SD_DATATIMEOUT                  ((uint32_t)0x000FFFFF)
-#define SD_0TO7BITS                     ((uint32_t)0x000000FF)
-#define SD_8TO15BITS                    ((uint32_t)0x0000FF00)
-#define SD_16TO23BITS                   ((uint32_t)0x00FF0000)
-#define SD_24TO31BITS                   ((uint32_t)0xFF000000)
-#define SD_MAX_DATA_LENGTH              ((uint32_t)0x01FFFFFF)
-
-#define SD_HALFFIFO                     ((uint32_t)0x00000008)
-#define SD_HALFFIFOBYTES                ((uint32_t)0x00000020)
-
-/* Command Class Supported */
-#define SD_CCCC_LOCK_UNLOCK             ((uint32_t)0x00000080)
-#define SD_CCCC_WRITE_PROT              ((uint32_t)0x00000040)
-#define SD_CCCC_ERASE                   ((uint32_t)0x00000020)
-
-/* Following commands are SD Card Specific commands.
-   SDIO_APP_CMD should be sent before sending these commands. */
-#define SDIO_SEND_IF_COND               ((uint32_t)0x00000008)
-
-#define SDIO_INIT_CLK_DIV                  ((uint8_t)0xB2)
-#define SDIO_TRANSFER_CLK_DIV              ((uint8_t)0x1)
-
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-static uint32_t CardType =  SDIO_STD_CAPACITY_SD_CARD_V1_1;
-static uint32_t CSD_Tab[4], CID_Tab[4], RCA = 0;
-static uint32_t DeviceMode = SD_POLLING_MODE;
-static uint32_t TotalNumberOfBytes = 0, StopCondition = 0;
-uint32_t *SrcBuffer, *DestBuffer;
-volatile SD_Error TransferError = SD_OK;
-__IO uint32_t TransferEnd = 0;
-__IO uint32_t NumberOfBytes = 0;
-SDIO_InitTypeDef SDIO_InitStructure;
-SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
-SDIO_DataInitTypeDef SDIO_DataInitStructure;
-
-/* Private function prototypes -----------------------------------------------*/
-static SD_Error CmdError(void);
-static SD_Error CmdResp1Error(uint8_t cmd);
-static SD_Error CmdResp7Error(void);
-static SD_Error CmdResp3Error(void);
-static SD_Error CmdResp2Error(void);
-static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca);
-static SD_Error SDEnWideBus(FunctionalState NewState);
-static SD_Error IsCardProgramming(uint8_t *pstatus);
-static SD_Error FindSCR(uint16_t rca, uint32_t *pscr);
-static uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes);
-static void GPIO_Configuration(void);
-static void DMA_TxConfiguration(uint32_t *BufferSRC, uint32_t BufferSize);
-static void DMA_RxConfiguration(uint32_t *BufferDST, uint32_t BufferSize);
-
-/* Private functions ---------------------------------------------------------*/
-
-/**
-  * @brief  Initializes the SD Card and put it into StandBy State (Ready
-  *   for data transfer).
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_Init(void)
-{
-  SD_Error errorstatus = SD_OK;
-
-  /* Configure SDIO interface GPIO */
-  GPIO_Configuration();
-
-  /* Enable the SDIO AHB Clock */
-  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_SDIO, ENABLE);
-
-  /* Enable the DMA2 Clock */
-  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE);
-
-  SDIO_DeInit();
-
-  errorstatus = SD_PowerON();
-
-  if (errorstatus != SD_OK)
-  {
-    /* CMD Response TimeOut (wait for CMDSENT flag) */
-    return(errorstatus);
-  }
-
-  errorstatus = SD_InitializeCards();
-
-  if (errorstatus != SD_OK)
-  {
-    /* CMD Response TimeOut (wait for CMDSENT flag) */
-    return(errorstatus);
-  }
-
-  /* Configure the SDIO peripheral */
-  /* HCLK = 72 MHz, SDIOCLK = 72 MHz, SDIO_CK = HCLK/(2 + 1) = 24 MHz */
-  SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
-  SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
-  SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
-  SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
-  SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
-  SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
-  SDIO_Init(&SDIO_InitStructure);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Enquires cards about their operating voltage and configures
-  *   clock controls.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_PowerON(void)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t response = 0, count = 0;
-  bool validvoltage = FALSE;
-  uint32_t SDType = SD_STD_CAPACITY;
-
-  /* Power ON Sequence -------------------------------------------------------*/
-  /* Configure the SDIO peripheral */
-  SDIO_InitStructure.SDIO_ClockDiv = SDIO_INIT_CLK_DIV; /* HCLK = 72MHz, SDIOCLK = 72MHz, SDIO_CK = HCLK/(178 + 2) = 400 KHz */
-  SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
-  SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
-  SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
-  SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
-  SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
-  SDIO_Init(&SDIO_InitStructure);
-
-  /* Set Power State to ON */
-  SDIO_SetPowerState(SDIO_PowerState_ON);
-
-  /* Enable SDIO Clock */
-  SDIO_ClockCmd(ENABLE);
-
-  /* CMD0: GO_IDLE_STATE -------------------------------------------------------*/
-  /* No CMD response required */
-  SDIO_CmdInitStructure.SDIO_Argument = 0x0;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_GO_IDLE_STATE;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_No;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdError();
-
-  if (errorstatus != SD_OK)
-  {
-    /* CMD Response TimeOut (wait for CMDSENT flag) */
-    return(errorstatus);
-  }
-
-  /* CMD8: SEND_IF_COND --------------------------------------------------------*/
-  /* Send CMD8 to verify SD card interface operating condition */
-  /* Argument: - [31:12]: Reserved (shall be set to '0')
-               - [11:8]: Supply Voltage (VHS) 0x1 (Range: 2.7-3.6 V)
-               - [7:0]: Check Pattern (recommended 0xAA) */
-  /* CMD Response: R7 */
-  SDIO_CmdInitStructure.SDIO_Argument = SD_CHECK_PATTERN;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_IF_COND;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp7Error();
-
-  if (errorstatus == SD_OK)
-  {
-    CardType = SDIO_STD_CAPACITY_SD_CARD_V2_0; /* SD Card 2.0 */
-    SDType = SD_HIGH_CAPACITY;
-  }
-  else
-  {
-    /* CMD55 */
-    SDIO_CmdInitStructure.SDIO_Argument = 0x00;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-    errorstatus = CmdResp1Error(SDIO_APP_CMD);
-  }
-  /* CMD55 */
-  SDIO_CmdInitStructure.SDIO_Argument = 0x00;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-  errorstatus = CmdResp1Error(SDIO_APP_CMD);
-
-  /* If errorstatus is Command TimeOut, it is a MMC card */
-  /* If errorstatus is SD_OK it is a SD card: SD card 2.0 (voltage range mismatch)
-     or SD card 1.x */
-  if (errorstatus == SD_OK)
-  {
-    /* SD CARD */
-    /* Send ACMD41 SD_APP_OP_COND with Argument 0x80100000 */
-    while ((!validvoltage) && (count < SD_MAX_VOLT_TRIAL))
-    {
-
-      /* SEND CMD55 APP_CMD with RCA as 0 */
-      SDIO_CmdInitStructure.SDIO_Argument = 0x00;
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-      errorstatus = CmdResp1Error(SDIO_APP_CMD);
-
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-      SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_SD | SDType;
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_APP_OP_COND;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-      errorstatus = CmdResp3Error();
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-
-      response = SDIO_GetResponse(SDIO_RESP1);
-      validvoltage = (bool) (((response >> 31) == 1) ? 1 : 0);
-      count++;
-    }
-    if (count >= SD_MAX_VOLT_TRIAL)
-    {
-      errorstatus = SD_INVALID_VOLTRANGE;
-      return(errorstatus);
-    }
-
-    if (response &= SD_HIGH_CAPACITY)
-    {
-      CardType = SDIO_HIGH_CAPACITY_SD_CARD;
-    }
-
-  }/* else MMC Card */
-    else
-    {
-        CardType = SDIO_MULTIMEDIA_CARD;
-
-        /* Send CMD1 SEND_OP_COND with Argument 0x80FF8000 */
-        while ((!validvoltage) && (count < SD_MAX_VOLT_TRIAL))
-        {
-
-            /* SEND CMD55 APP_CMD with RCA as 0 */
-            SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_MMC;
-            SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_OP_COND;
-            SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-            SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-            SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-            SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-            errorstatus = CmdResp3Error();
-            if (errorstatus != SD_OK)
-            {
-                return(errorstatus);
-            }
-
-            response = SDIO_GetResponse(SDIO_RESP1);
-            validvoltage = (bool) (((response >> 31) == 1) ? 1 : 0);
-            count++;
-        }
-        if (count >= SD_MAX_VOLT_TRIAL)
-        {
-            errorstatus = SD_INVALID_VOLTRANGE;
-            return(errorstatus);
-        }
-    }
-
-    return(SD_OK);
-}
-
-/**
-  * @brief  Turns the SDIO output signals off.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_PowerOFF(void)
-{
-  SD_Error errorstatus = SD_OK;
-
-  /* Set Power State to OFF */
-  SDIO_SetPowerState(SDIO_PowerState_OFF);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Intialises all cards or single card as the case may be.
-  *   Card(s) come into standby state.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_InitializeCards(void)
-{
-  SD_Error errorstatus = SD_OK;
-  uint16_t rca = 0x01;
-
-  if (SDIO_GetPowerState() == SDIO_PowerState_OFF)
-  {
-    errorstatus = SD_REQUEST_NOT_APPLICABLE;
-    return(errorstatus);
-  }
-
-  if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
-  {
-    /* Send CMD2 ALL_SEND_CID */
-    SDIO_CmdInitStructure.SDIO_Argument = 0x0;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_ALL_SEND_CID;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp2Error();
-
-    if (SD_OK != errorstatus)
-    {
-      return(errorstatus);
-    }
-
-    CID_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
-    CID_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
-    CID_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
-    CID_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
-  }
-  if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) ||  (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) ||  (SDIO_SECURE_DIGITAL_IO_COMBO_CARD == CardType)
-      ||  (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
-  {
-    /* Send CMD3 SET_REL_ADDR with argument 0 */
-    /* SD Card publishes its RCA. */
-    SDIO_CmdInitStructure.SDIO_Argument = 0x00;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_REL_ADDR;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp6Error(SDIO_SET_REL_ADDR, &rca);
-
-    if (SD_OK != errorstatus)
-    {
-      return(errorstatus);
-    }
-  }
-    if (SDIO_MULTIMEDIA_CARD == CardType)
-    {
-        /* Send CMD3 SET_REL_ADDR with argument 0 */
-        /* SD Card publishes its RCA. */
-        SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);
-        SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_REL_ADDR;
-        SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-        SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-        SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-        SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-        errorstatus = CmdResp2Error();
-
-        if (SD_OK != errorstatus)
-        {
-            return(errorstatus);
-        }
-    }
-
-  if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
-  {
-    RCA = rca;
-
-    /* Send CMD9 SEND_CSD with argument as card's RCA */
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_CSD;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp2Error();
-
-    if (SD_OK != errorstatus)
-    {
-      return(errorstatus);
-    }
-
-    CSD_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
-    CSD_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
-    CSD_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
-    CSD_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
-  }
-
-  errorstatus = SD_OK; /* All cards get intialized */
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Returns information about specific card.
-  * @param  cardinfo : pointer to a SD_CardInfo structure
-  *   that contains all SD card information.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo)
-{
-  SD_Error errorstatus = SD_OK;
-  uint8_t tmp = 0;
-
-  cardinfo->CardType = (uint8_t)CardType;
-  cardinfo->RCA = (uint16_t)RCA;
-
-  /* Byte 0 */
-  tmp = (uint8_t)((CSD_Tab[0] & 0xFF000000) >> 24);
-  cardinfo->SD_csd.CSDStruct = (tmp & 0xC0) >> 6;
-  cardinfo->SD_csd.SysSpecVersion = (tmp & 0x3C) >> 2;
-  cardinfo->SD_csd.Reserved1 = tmp & 0x03;
-
-  /* Byte 1 */
-  tmp = (uint8_t)((CSD_Tab[0] & 0x00FF0000) >> 16);
-  cardinfo->SD_csd.TAAC = tmp;
-
-  /* Byte 2 */
-  tmp = (uint8_t)((CSD_Tab[0] & 0x0000FF00) >> 8);
-  cardinfo->SD_csd.NSAC = tmp;
-
-  /* Byte 3 */
-  tmp = (uint8_t)(CSD_Tab[0] & 0x000000FF);
-  cardinfo->SD_csd.MaxBusClkFrec = tmp;
-
-  /* Byte 4 */
-  tmp = (uint8_t)((CSD_Tab[1] & 0xFF000000) >> 24);
-  cardinfo->SD_csd.CardComdClasses = tmp << 4;
-
-  /* Byte 5 */
-  tmp = (uint8_t)((CSD_Tab[1] & 0x00FF0000) >> 16);
-  cardinfo->SD_csd.CardComdClasses |= (tmp & 0xF0) >> 4;
-  cardinfo->SD_csd.RdBlockLen = tmp & 0x0F;
-
-  /* Byte 6 */
-  tmp = (uint8_t)((CSD_Tab[1] & 0x0000FF00) >> 8);
-  cardinfo->SD_csd.PartBlockRead = (tmp & 0x80) >> 7;
-  cardinfo->SD_csd.WrBlockMisalign = (tmp & 0x40) >> 6;
-  cardinfo->SD_csd.RdBlockMisalign = (tmp & 0x20) >> 5;
-  cardinfo->SD_csd.DSRImpl = (tmp & 0x10) >> 4;
-  cardinfo->SD_csd.Reserved2 = 0; /* Reserved */
-
-  if ((CardType == SDIO_STD_CAPACITY_SD_CARD_V1_1) || (CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0))
-  {
-    cardinfo->SD_csd.DeviceSize = (tmp & 0x03) << 10;
-
-    /* Byte 7 */
-    tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
-    cardinfo->SD_csd.DeviceSize |= (tmp) << 2;
-
-    /* Byte 8 */
-    tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
-    cardinfo->SD_csd.DeviceSize |= (tmp & 0xC0) >> 6;
-
-    cardinfo->SD_csd.MaxRdCurrentVDDMin = (tmp & 0x38) >> 3;
-    cardinfo->SD_csd.MaxRdCurrentVDDMax = (tmp & 0x07);
-
-    /* Byte 9 */
-    tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
-    cardinfo->SD_csd.MaxWrCurrentVDDMin = (tmp & 0xE0) >> 5;
-    cardinfo->SD_csd.MaxWrCurrentVDDMax = (tmp & 0x1C) >> 2;
-    cardinfo->SD_csd.DeviceSizeMul = (tmp & 0x03) << 1;
-    /* Byte 10 */
-    tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
-    cardinfo->SD_csd.DeviceSizeMul |= (tmp & 0x80) >> 7;
-
-    cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) ;
-    cardinfo->CardCapacity *= (1 << (cardinfo->SD_csd.DeviceSizeMul + 2));
-    cardinfo->CardBlockSize = 1 << (cardinfo->SD_csd.RdBlockLen);
-    cardinfo->CardCapacity *= cardinfo->CardBlockSize;
-  }
-  else if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
-  {
-    /* Byte 7 */
-    tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
-    cardinfo->SD_csd.DeviceSize = (tmp & 0x3F) << 16;
-
-    /* Byte 8 */
-    tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
-
-    cardinfo->SD_csd.DeviceSize |= (tmp << 8);
-
-    /* Byte 9 */
-    tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
-
-    cardinfo->SD_csd.DeviceSize |= (tmp);
-
-    /* Byte 10 */
-    tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
-
-    cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) * 512 * 1024;
-    cardinfo->CardBlockSize = 512;
-  }
-
-
-  cardinfo->SD_csd.EraseGrSize = (tmp & 0x40) >> 6;
-  cardinfo->SD_csd.EraseGrMul = (tmp & 0x3F) << 1;
-
-  /* Byte 11 */
-  tmp = (uint8_t)(CSD_Tab[2] & 0x000000FF);
-  cardinfo->SD_csd.EraseGrMul |= (tmp & 0x80) >> 7;
-  cardinfo->SD_csd.WrProtectGrSize = (tmp & 0x7F);
-
-  /* Byte 12 */
-  tmp = (uint8_t)((CSD_Tab[3] & 0xFF000000) >> 24);
-  cardinfo->SD_csd.WrProtectGrEnable = (tmp & 0x80) >> 7;
-  cardinfo->SD_csd.ManDeflECC = (tmp & 0x60) >> 5;
-  cardinfo->SD_csd.WrSpeedFact = (tmp & 0x1C) >> 2;
-  cardinfo->SD_csd.MaxWrBlockLen = (tmp & 0x03) << 2;
-
-  /* Byte 13 */
-  tmp = (uint8_t)((CSD_Tab[3] & 0x00FF0000) >> 16);
-  cardinfo->SD_csd.MaxWrBlockLen |= (tmp & 0xC0) >> 6;
-  cardinfo->SD_csd.WriteBlockPaPartial = (tmp & 0x20) >> 5;
-  cardinfo->SD_csd.Reserved3 = 0;
-  cardinfo->SD_csd.ContentProtectAppli = (tmp & 0x01);
-
-  /* Byte 14 */
-  tmp = (uint8_t)((CSD_Tab[3] & 0x0000FF00) >> 8);
-  cardinfo->SD_csd.FileFormatGrouop = (tmp & 0x80) >> 7;
-  cardinfo->SD_csd.CopyFlag = (tmp & 0x40) >> 6;
-  cardinfo->SD_csd.PermWrProtect = (tmp & 0x20) >> 5;
-  cardinfo->SD_csd.TempWrProtect = (tmp & 0x10) >> 4;
-  cardinfo->SD_csd.FileFormat = (tmp & 0x0C) >> 2;
-  cardinfo->SD_csd.ECC = (tmp & 0x03);
-
-  /* Byte 15 */
-  tmp = (uint8_t)(CSD_Tab[3] & 0x000000FF);
-  cardinfo->SD_csd.CSD_CRC = (tmp & 0xFE) >> 1;
-  cardinfo->SD_csd.Reserved4 = 1;
-
-
-  /* Byte 0 */
-  tmp = (uint8_t)((CID_Tab[0] & 0xFF000000) >> 24);
-  cardinfo->SD_cid.ManufacturerID = tmp;
-
-  /* Byte 1 */
-  tmp = (uint8_t)((CID_Tab[0] & 0x00FF0000) >> 16);
-  cardinfo->SD_cid.OEM_AppliID = tmp << 8;
-
-  /* Byte 2 */
-  tmp = (uint8_t)((CID_Tab[0] & 0x000000FF00) >> 8);
-  cardinfo->SD_cid.OEM_AppliID |= tmp;
-
-  /* Byte 3 */
-  tmp = (uint8_t)(CID_Tab[0] & 0x000000FF);
-  cardinfo->SD_cid.ProdName1 = tmp << 24;
-
-  /* Byte 4 */
-  tmp = (uint8_t)((CID_Tab[1] & 0xFF000000) >> 24);
-  cardinfo->SD_cid.ProdName1 |= tmp << 16;
-
-  /* Byte 5 */
-  tmp = (uint8_t)((CID_Tab[1] & 0x00FF0000) >> 16);
-  cardinfo->SD_cid.ProdName1 |= tmp << 8;
-
-  /* Byte 6 */
-  tmp = (uint8_t)((CID_Tab[1] & 0x0000FF00) >> 8);
-  cardinfo->SD_cid.ProdName1 |= tmp;
-
-  /* Byte 7 */
-  tmp = (uint8_t)(CID_Tab[1] & 0x000000FF);
-  cardinfo->SD_cid.ProdName2 = tmp;
-
-  /* Byte 8 */
-  tmp = (uint8_t)((CID_Tab[2] & 0xFF000000) >> 24);
-  cardinfo->SD_cid.ProdRev = tmp;
-
-  /* Byte 9 */
-  tmp = (uint8_t)((CID_Tab[2] & 0x00FF0000) >> 16);
-  cardinfo->SD_cid.ProdSN = tmp << 24;
-
-  /* Byte 10 */
-  tmp = (uint8_t)((CID_Tab[2] & 0x0000FF00) >> 8);
-  cardinfo->SD_cid.ProdSN |= tmp << 16;
-
-  /* Byte 11 */
-  tmp = (uint8_t)(CID_Tab[2] & 0x000000FF);
-  cardinfo->SD_cid.ProdSN |= tmp << 8;
-
-  /* Byte 12 */
-  tmp = (uint8_t)((CID_Tab[3] & 0xFF000000) >> 24);
-  cardinfo->SD_cid.ProdSN |= tmp;
-
-  /* Byte 13 */
-  tmp = (uint8_t)((CID_Tab[3] & 0x00FF0000) >> 16);
-  cardinfo->SD_cid.Reserved1 |= (tmp & 0xF0) >> 4;
-  cardinfo->SD_cid.ManufactDate = (tmp & 0x0F) << 8;
-
-  /* Byte 14 */
-  tmp = (uint8_t)((CID_Tab[3] & 0x0000FF00) >> 8);
-  cardinfo->SD_cid.ManufactDate |= tmp;
-
-  /* Byte 15 */
-  tmp = (uint8_t)(CID_Tab[3] & 0x000000FF);
-  cardinfo->SD_cid.CID_CRC = (tmp & 0xFE) >> 1;
-  cardinfo->SD_cid.Reserved2 = 1;
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Enables wide bus opeartion for the requeseted card if
-  *   supported by card.
-  * @param  WideMode: Specifies the SD card wide bus mode.
-  *   This parameter can be one of the following values:
-  *     @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
-  *     @arg SDIO_BusWide_4b: 4-bit data transfer
-  *     @arg SDIO_BusWide_1b: 1-bit data transfer
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_EnableWideBusOperation(uint32_t WideMode)
-{
-  SD_Error errorstatus = SD_OK;
-
-  /* MMC Card doesn't support this feature */
-  if (SDIO_MULTIMEDIA_CARD == CardType)
-  {
-    errorstatus = SD_UNSUPPORTED_FEATURE;
-    return(errorstatus);
-  }
-  else if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
-  {
-    if (SDIO_BusWide_8b == WideMode)
-    {
-      errorstatus = SD_UNSUPPORTED_FEATURE;
-      return(errorstatus);
-    }
-    else if (SDIO_BusWide_4b == WideMode)
-    {
-      errorstatus = SDEnWideBus(ENABLE);
-
-      if (SD_OK == errorstatus)
-      {
-        /* Configure the SDIO peripheral */
-        SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
-        SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
-        SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
-        SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
-        SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_4b;
-        SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
-        SDIO_Init(&SDIO_InitStructure);
-      }
-    }
-    else
-    {
-      errorstatus = SDEnWideBus(DISABLE);
-
-      if (SD_OK == errorstatus)
-      {
-        /* Configure the SDIO peripheral */
-        SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
-        SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
-        SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
-        SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
-        SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
-        SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
-        SDIO_Init(&SDIO_InitStructure);
-      }
-    }
-  }
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Sets device mode whether to operate in Polling, Interrupt or
-  *   DMA mode.
-  * @param  Mode: Specifies the Data Transfer mode.
-  *   This parameter can be one of the following values:
-  *     @arg SD_DMA_MODE: Data transfer using DMA.
-  *     @arg SD_INTERRUPT_MODE: Data transfer using interrupts.
-  *     @arg SD_POLLING_MODE: Data transfer using flags.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_SetDeviceMode(uint32_t Mode)
-{
-  SD_Error errorstatus = SD_OK;
-
-  if ((Mode == SD_DMA_MODE) || (Mode == SD_INTERRUPT_MODE) || (Mode == SD_POLLING_MODE))
-  {
-    DeviceMode = Mode;
-  }
-  else
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-  }
-  return(errorstatus);
-
-}
-
-/**
-  * @brief  Selects od Deselects the corresponding card.
-  * @param  addr: Address of the Card to be selected.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_SelectDeselect(uint32_t addr)
-{
-  SD_Error errorstatus = SD_OK;
-
-  /* Send CMD7 SDIO_SEL_DESEL_CARD */
-  SDIO_CmdInitStructure.SDIO_Argument =  addr;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEL_DESEL_CARD;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_SEL_DESEL_CARD);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Allows to read one block from a specified address in a card.
-  * @param  addr: Address from where data are to be read.
-  * @param  readbuff: pointer to the buffer that will contain the
-  *   received data
-  * @param  BlockSize: the SD card Data block size.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_ReadBlock(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t count = 0, *tempbuff = readbuff;
-  uint8_t power = 0;
-
-  if (NULL == readbuff)
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  TransferError = SD_OK;
-  TransferEnd = 0;
-  TotalNumberOfBytes = 0;
-
-  /* Clear all DPSM configuration */
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = 0;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-  SDIO_DMACmd(DISABLE);
-
-  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
-  {
-    errorstatus = SD_LOCK_UNLOCK_FAILED;
-    return(errorstatus);
-  }
-
-  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
-  {
-    BlockSize = 512;
-    addr /= 512;
-  }
-  if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
-  {
-    power = convert_from_bytes_to_power_of_two(BlockSize);
-
-    /* Set Block Size for Card */
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
-
-    if (SD_OK != errorstatus)
-    {
-      return(errorstatus);
-    }
-  }
-  else
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-
-  TotalNumberOfBytes = BlockSize;
-  StopCondition = 0;
-  DestBuffer = readbuff;
-
-  /* Send CMD17 READ_SINGLE_BLOCK */
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)addr;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_READ_SINGLE_BLOCK;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_READ_SINGLE_BLOCK);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-  /* In case of single block transfer, no need of stop transfer at all.*/
-  if (DeviceMode == SD_POLLING_MODE)
-  {
-    /* Polling mode */
-    while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
-    {
-      if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
-      {
-        for (count = 0; count < 8; count++)
-        {
-          *(tempbuff + count) = SDIO_ReadData();
-        }
-        tempbuff += 8;
-      }
-    }
-
-    if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
-      errorstatus = SD_DATA_TIMEOUT;
-      return(errorstatus);
-    }
-    else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
-      errorstatus = SD_DATA_CRC_FAIL;
-      return(errorstatus);
-    }
-    else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
-      errorstatus = SD_RX_OVERRUN;
-      return(errorstatus);
-    }
-    else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_STBITERR);
-      errorstatus = SD_START_BIT_ERR;
-      return(errorstatus);
-    }
-    while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
-    {
-      *tempbuff = SDIO_ReadData();
-      tempbuff++;
-    }
-
-    /* Clear all the static flags */
-    SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-  }
-  else if (DeviceMode == SD_INTERRUPT_MODE)
-  {
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_RXFIFOHF | SDIO_IT_STBITERR, ENABLE);
-    while ((TransferEnd == 0) && (TransferError == SD_OK))
-    {}
-    if (TransferError != SD_OK)
-    {
-      return(TransferError);
-    }
-  }
-  else if (DeviceMode == SD_DMA_MODE)
+

+/** @addtogroup STM32F10x_StdPeriph_Examples

+  * @{

+  */

+

+/** @addtogroup SDIO_Example

+  * @{

+  */

+

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

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

+#define NULL 0

+#define SDIO_STATIC_FLAGS               ((uint32_t)0x000005FF)

+#define SDIO_CMD0TIMEOUT                ((uint32_t)0x00002710)

+#define SDIO_FIFO_Address               ((uint32_t)0x40018080)

+

+/* Mask for errors Card Status R1 (OCR Register) */

+#define SD_OCR_ADDR_OUT_OF_RANGE        ((uint32_t)0x80000000)

+#define SD_OCR_ADDR_MISALIGNED          ((uint32_t)0x40000000)

+#define SD_OCR_BLOCK_LEN_ERR            ((uint32_t)0x20000000)

+#define SD_OCR_ERASE_SEQ_ERR            ((uint32_t)0x10000000)

+#define SD_OCR_BAD_ERASE_PARAM          ((uint32_t)0x08000000)

+#define SD_OCR_WRITE_PROT_VIOLATION     ((uint32_t)0x04000000)

+#define SD_OCR_LOCK_UNLOCK_FAILED       ((uint32_t)0x01000000)

+#define SD_OCR_COM_CRC_FAILED           ((uint32_t)0x00800000)

+#define SD_OCR_ILLEGAL_CMD              ((uint32_t)0x00400000)

+#define SD_OCR_CARD_ECC_FAILED          ((uint32_t)0x00200000)

+#define SD_OCR_CC_ERROR                 ((uint32_t)0x00100000)

+#define SD_OCR_GENERAL_UNKNOWN_ERROR    ((uint32_t)0x00080000)

+#define SD_OCR_STREAM_READ_UNDERRUN     ((uint32_t)0x00040000)

+#define SD_OCR_STREAM_WRITE_OVERRUN     ((uint32_t)0x00020000)

+#define SD_OCR_CID_CSD_OVERWRIETE       ((uint32_t)0x00010000)

+#define SD_OCR_WP_ERASE_SKIP            ((uint32_t)0x00008000)

+#define SD_OCR_CARD_ECC_DISABLED        ((uint32_t)0x00004000)

+#define SD_OCR_ERASE_RESET              ((uint32_t)0x00002000)

+#define SD_OCR_AKE_SEQ_ERROR            ((uint32_t)0x00000008)

+#define SD_OCR_ERRORBITS                ((uint32_t)0xFDFFE008)

+

+/* Masks for R6 Response */

+#define SD_R6_GENERAL_UNKNOWN_ERROR     ((uint32_t)0x00002000)

+#define SD_R6_ILLEGAL_CMD               ((uint32_t)0x00004000)

+#define SD_R6_COM_CRC_FAILED            ((uint32_t)0x00008000)

+

+#define SD_VOLTAGE_WINDOW_SD            ((uint32_t)0x80100000)

+#define SD_HIGH_CAPACITY                ((uint32_t)0x40000000)

+#define SD_STD_CAPACITY                 ((uint32_t)0x00000000)

+#define SD_CHECK_PATTERN                ((uint32_t)0x000001AA)

+#define SD_VOLTAGE_WINDOW_MMC           ((uint32_t)0x80FF8000)

+

+#define SD_MAX_VOLT_TRIAL               ((uint32_t)0x0000FFFF)

+#define SD_ALLZERO                      ((uint32_t)0x00000000)

+

+#define SD_WIDE_BUS_SUPPORT             ((uint32_t)0x00040000)

+#define SD_SINGLE_BUS_SUPPORT           ((uint32_t)0x00010000)

+#define SD_CARD_LOCKED                  ((uint32_t)0x02000000)

+#define SD_CARD_PROGRAMMING             ((uint32_t)0x00000007)

+#define SD_CARD_RECEIVING               ((uint32_t)0x00000006)

+#define SD_DATATIMEOUT                  ((uint32_t)0x000FFFFF)

+#define SD_0TO7BITS                     ((uint32_t)0x000000FF)

+#define SD_8TO15BITS                    ((uint32_t)0x0000FF00)

+#define SD_16TO23BITS                   ((uint32_t)0x00FF0000)

+#define SD_24TO31BITS                   ((uint32_t)0xFF000000)

+#define SD_MAX_DATA_LENGTH              ((uint32_t)0x01FFFFFF)

+

+#define SD_HALFFIFO                     ((uint32_t)0x00000008)

+#define SD_HALFFIFOBYTES                ((uint32_t)0x00000020)

+

+/* Command Class Supported */

+#define SD_CCCC_LOCK_UNLOCK             ((uint32_t)0x00000080)

+#define SD_CCCC_WRITE_PROT              ((uint32_t)0x00000040)

+#define SD_CCCC_ERASE                   ((uint32_t)0x00000020)

+

+/* Following commands are SD Card Specific commands.

+   SDIO_APP_CMD should be sent before sending these commands. */

+#define SDIO_SEND_IF_COND               ((uint32_t)0x00000008)

+

+#define SDIO_INIT_CLK_DIV                  ((uint8_t)0xB2)

+#define SDIO_TRANSFER_CLK_DIV              ((uint8_t)0x1)

+

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

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

+static uint32_t CardType =  SDIO_STD_CAPACITY_SD_CARD_V1_1;

+static uint32_t CSD_Tab[4], CID_Tab[4], RCA = 0;

+static uint32_t DeviceMode = SD_POLLING_MODE;

+static uint32_t TotalNumberOfBytes = 0, StopCondition = 0;

+uint32_t *SrcBuffer, *DestBuffer;

+volatile SD_Error TransferError = SD_OK;

+__IO uint32_t TransferEnd = 0;

+__IO uint32_t NumberOfBytes = 0;

+SDIO_InitTypeDef SDIO_InitStructure;

+SDIO_CmdInitTypeDef SDIO_CmdInitStructure;

+SDIO_DataInitTypeDef SDIO_DataInitStructure;

+

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

+static SD_Error CmdError(void);

+static SD_Error CmdResp1Error(uint8_t cmd);

+static SD_Error CmdResp7Error(void);

+static SD_Error CmdResp3Error(void);

+static SD_Error CmdResp2Error(void);

+static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca);

+static SD_Error SDEnWideBus(FunctionalState NewState);

+static SD_Error IsCardProgramming(uint8_t *pstatus);

+static SD_Error FindSCR(uint16_t rca, uint32_t *pscr);

+static uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes);

+static void GPIO_Configuration(void);

+static void DMA_TxConfiguration(uint32_t *BufferSRC, uint32_t BufferSize);

+static void DMA_RxConfiguration(uint32_t *BufferDST, uint32_t BufferSize);

+

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

+

+/**

+  * @brief  Initializes the SD Card and put it into StandBy State (Ready

+  *   for data transfer).

+  * @param  None

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_Init(void)

+{

+  SD_Error errorstatus = SD_OK;

+

+  /* Configure SDIO interface GPIO */

+  GPIO_Configuration();

+

+  /* Enable the SDIO AHB Clock */

+  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_SDIO, ENABLE);

+

+  /* Enable the DMA2 Clock */

+  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE);

+

+  SDIO_DeInit();

+

+  errorstatus = SD_PowerON();

+

+  if (errorstatus != SD_OK)

+  {

+    /* CMD Response TimeOut (wait for CMDSENT flag) */

+    return(errorstatus);

+  }

+

+  errorstatus = SD_InitializeCards();

+

+  if (errorstatus != SD_OK)

+  {

+    /* CMD Response TimeOut (wait for CMDSENT flag) */

+    return(errorstatus);

+  }

+

+  /* Configure the SDIO peripheral */

+  /* HCLK = 72 MHz, SDIOCLK = 72 MHz, SDIO_CK = HCLK/(2 + 1) = 24 MHz */

+  SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;

+  SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;

+  SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;

+  SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;

+  SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;

+  SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Enable;

+  SDIO_Init(&SDIO_InitStructure);

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Enquires cards about their operating voltage and configures

+  *   clock controls.

+  * @param  None

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_PowerON(void)

+{

+  SD_Error errorstatus = SD_OK;

+  uint32_t response = 0, count = 0;

+  bool validvoltage = FALSE;

+  uint32_t SDType = SD_STD_CAPACITY;

+

+  /* Power ON Sequence -------------------------------------------------------*/

+  /* Configure the SDIO peripheral */

+  SDIO_InitStructure.SDIO_ClockDiv = SDIO_INIT_CLK_DIV; /* HCLK = 72MHz, SDIOCLK = 72MHz, SDIO_CK = HCLK/(178 + 2) = 400 KHz */

+  SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;

+  SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;

+  SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;

+  SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;

+  SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;

+  SDIO_Init(&SDIO_InitStructure);

+

+  /* Set Power State to ON */

+  SDIO_SetPowerState(SDIO_PowerState_ON);

+

+  /* Enable SDIO Clock */

+  SDIO_ClockCmd(ENABLE);

+

+  /* CMD0: GO_IDLE_STATE -------------------------------------------------------*/

+  /* No CMD response required */

+  SDIO_CmdInitStructure.SDIO_Argument = 0x0;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_GO_IDLE_STATE;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_No;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+  errorstatus = CmdError();

+

+  if (errorstatus != SD_OK)

+  {

+    /* CMD Response TimeOut (wait for CMDSENT flag) */

+    return(errorstatus);

+  }

+

+  /* CMD8: SEND_IF_COND --------------------------------------------------------*/

+  /* Send CMD8 to verify SD card interface operating condition */

+  /* Argument: - [31:12]: Reserved (shall be set to '0')

+               - [11:8]: Supply Voltage (VHS) 0x1 (Range: 2.7-3.6 V)

+               - [7:0]: Check Pattern (recommended 0xAA) */

+  /* CMD Response: R7 */

+  SDIO_CmdInitStructure.SDIO_Argument = SD_CHECK_PATTERN;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_IF_COND;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+  errorstatus = CmdResp7Error();

+

+  if (errorstatus == SD_OK)

+  {

+    CardType = SDIO_STD_CAPACITY_SD_CARD_V2_0; /* SD Card 2.0 */

+    SDType = SD_HIGH_CAPACITY;

+  }

+  else

+  {

+    /* CMD55 */

+    SDIO_CmdInitStructure.SDIO_Argument = 0x00;

+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;

+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+    SDIO_SendCommand(&SDIO_CmdInitStructure);

+    errorstatus = CmdResp1Error(SDIO_APP_CMD);

+  }

+  /* CMD55 */

+  SDIO_CmdInitStructure.SDIO_Argument = 0x00;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+  errorstatus = CmdResp1Error(SDIO_APP_CMD);

+

+  /* If errorstatus is Command TimeOut, it is a MMC card */

+  /* If errorstatus is SD_OK it is a SD card: SD card 2.0 (voltage range mismatch)

+     or SD card 1.x */

+  if (errorstatus == SD_OK)

   {

-    int cnt = 0; 
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
-    SDIO_DMACmd(ENABLE);
-    DMA_RxConfiguration(readbuff, BlockSize);
-    while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
+    /* SD CARD */

+    /* Send ACMD41 SD_APP_OP_COND with Argument 0x80100000 */

+    while ((!validvoltage) && (count < SD_MAX_VOLT_TRIAL))

     {

-		cnt ++; 

-		if (cnt > 10 * 50000) 

-		{

-			rt_kprintf("DMA flag 0x%08x\n", DMA_GetFlagStatus(DMA2_FLAG_TC4));

-			/* Clear all DPSM configuration */
-			SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-			SDIO_DataInitStructure.SDIO_DataLength = 0;
-			SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
-			SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
-			SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-			SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
-			SDIO_DataConfig(&SDIO_DataInitStructure);
-			SDIO_DMACmd(DISABLE);
-			errorstatus = SD_ERROR; 

-			break;

-		} 

+

+      /* SEND CMD55 APP_CMD with RCA as 0 */

+      SDIO_CmdInitStructure.SDIO_Argument = 0x00;

+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;

+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+      SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+      errorstatus = CmdResp1Error(SDIO_APP_CMD);

+

+      if (errorstatus != SD_OK)

+      {

+        return(errorstatus);

+      }

+      SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_SD | SDType;

+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_APP_OP_COND;

+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+      SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+      errorstatus = CmdResp3Error();

+      if (errorstatus != SD_OK)

+      {

+        return(errorstatus);

+      }

+

+      response = SDIO_GetResponse(SDIO_RESP1);

+      validvoltage = (bool) (((response >> 31) == 1) ? 1 : 0);

+      count++;

+    }

+    if (count >= SD_MAX_VOLT_TRIAL)

+    {

+      errorstatus = SD_INVALID_VOLTRANGE;

+      return(errorstatus);

+    }

+

+    if (response &= SD_HIGH_CAPACITY)

+    {

+      CardType = SDIO_HIGH_CAPACITY_SD_CARD;

+    }

+  }/* else MMC Card */

+  else

+  {

+    CardType = SDIO_MULTIMEDIA_CARD;

+

+    /* Send CMD1 SEND_OP_COND with Argument 0x80FF8000 */

+    while ((!validvoltage) && (count < SD_MAX_VOLT_TRIAL))

+    {

+      /* SEND CMD55 APP_CMD with RCA as 0 */

+      SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_MMC;

+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_OP_COND;

+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+      SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+      errorstatus = CmdResp3Error();

+      if (errorstatus != SD_OK)

+      {

+        return(errorstatus);

+      }

+

+      response = SDIO_GetResponse(SDIO_RESP1);

+      validvoltage = (bool) (((response >> 31) == 1) ? 1 : 0);

+      count++;

+    }

+    if (count >= SD_MAX_VOLT_TRIAL)

+    {

+      errorstatus = SD_INVALID_VOLTRANGE;

+      return(errorstatus);

+    }

+  }

+

+  return(SD_OK);

+}

+

+/**

+  * @brief  Turns the SDIO output signals off.

+  * @param  None

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_PowerOFF(void)

+{

+  SD_Error errorstatus = SD_OK;

+

+  /* Set Power State to OFF */

+  SDIO_SetPowerState(SDIO_PowerState_OFF);

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Intialises all cards or single card as the case may be.

+  *   Card(s) come into standby state.

+  * @param  None

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_InitializeCards(void)

+{

+  SD_Error errorstatus = SD_OK;

+  uint16_t rca = 0x01;

+

+  if (SDIO_GetPowerState() == SDIO_PowerState_OFF)

+  {

+    errorstatus = SD_REQUEST_NOT_APPLICABLE;

+    return(errorstatus);

+  }

+

+  if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)

+  {

+    /* Send CMD2 ALL_SEND_CID */

+    SDIO_CmdInitStructure.SDIO_Argument = 0x0;

+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_ALL_SEND_CID;

+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;

+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+    SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+    errorstatus = CmdResp2Error();

+

+    if (SD_OK != errorstatus)

+    {

+      return(errorstatus);

+    }

+

+    CID_Tab[0] = SDIO_GetResponse(SDIO_RESP1);

+    CID_Tab[1] = SDIO_GetResponse(SDIO_RESP2);

+    CID_Tab[2] = SDIO_GetResponse(SDIO_RESP3);

+    CID_Tab[3] = SDIO_GetResponse(SDIO_RESP4);

+  }

+  if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) ||  (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) ||  (SDIO_SECURE_DIGITAL_IO_COMBO_CARD == CardType)

+      ||  (SDIO_HIGH_CAPACITY_SD_CARD == CardType))

+  {

+    /* Send CMD3 SET_REL_ADDR with argument 0 */

+    /* SD Card publishes its RCA. */

+    SDIO_CmdInitStructure.SDIO_Argument = 0x00;

+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_REL_ADDR;

+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+    SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+    errorstatus = CmdResp6Error(SDIO_SET_REL_ADDR, &rca);

+

+    if (SD_OK != errorstatus)

+    {

+      return(errorstatus);

+    }

+  }

+    if (SDIO_MULTIMEDIA_CARD == CardType)

+    {

+        /* Send CMD3 SET_REL_ADDR with argument 0 */

+        /* SD Card publishes its RCA. */

+        SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);

+        SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_REL_ADDR;

+        SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+        SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+        SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+        SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+        errorstatus = CmdResp2Error();

+

+        if (SD_OK != errorstatus)

+        {

+            return(errorstatus);

+        }

+    }

+

+  if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)

+  {

+    RCA = rca;

+

+    /* Send CMD9 SEND_CSD with argument as card's RCA */

+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);

+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_CSD;

+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;

+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+    SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+    errorstatus = CmdResp2Error();

+

+    if (SD_OK != errorstatus)

+    {

+      return(errorstatus);

+    }

+

+    CSD_Tab[0] = SDIO_GetResponse(SDIO_RESP1);

+    CSD_Tab[1] = SDIO_GetResponse(SDIO_RESP2);

+    CSD_Tab[2] = SDIO_GetResponse(SDIO_RESP3);

+    CSD_Tab[3] = SDIO_GetResponse(SDIO_RESP4);

+  }

+

+  errorstatus = SD_OK; /* All cards get intialized */

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Returns information about specific card.

+  * @param  cardinfo : pointer to a SD_CardInfo structure

+  *   that contains all SD card information.

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo)

+{

+  SD_Error errorstatus = SD_OK;

+  uint8_t tmp = 0;

+

+  cardinfo->CardType = (uint8_t)CardType;

+  cardinfo->RCA = (uint16_t)RCA;

+

+  /* Byte 0 */

+  tmp = (uint8_t)((CSD_Tab[0] & 0xFF000000) >> 24);

+  cardinfo->SD_csd.CSDStruct = (tmp & 0xC0) >> 6;

+  cardinfo->SD_csd.SysSpecVersion = (tmp & 0x3C) >> 2;

+  cardinfo->SD_csd.Reserved1 = tmp & 0x03;

+

+  /* Byte 1 */

+  tmp = (uint8_t)((CSD_Tab[0] & 0x00FF0000) >> 16);

+  cardinfo->SD_csd.TAAC = tmp;

+

+  /* Byte 2 */

+  tmp = (uint8_t)((CSD_Tab[0] & 0x0000FF00) >> 8);

+  cardinfo->SD_csd.NSAC = tmp;

+

+  /* Byte 3 */

+  tmp = (uint8_t)(CSD_Tab[0] & 0x000000FF);

+  cardinfo->SD_csd.MaxBusClkFrec = tmp;

+

+  /* Byte 4 */

+  tmp = (uint8_t)((CSD_Tab[1] & 0xFF000000) >> 24);

+  cardinfo->SD_csd.CardComdClasses = tmp << 4;

+

+  /* Byte 5 */

+  tmp = (uint8_t)((CSD_Tab[1] & 0x00FF0000) >> 16);

+  cardinfo->SD_csd.CardComdClasses |= (tmp & 0xF0) >> 4;

+  cardinfo->SD_csd.RdBlockLen = tmp & 0x0F;

+

+  /* Byte 6 */

+  tmp = (uint8_t)((CSD_Tab[1] & 0x0000FF00) >> 8);

+  cardinfo->SD_csd.PartBlockRead = (tmp & 0x80) >> 7;

+  cardinfo->SD_csd.WrBlockMisalign = (tmp & 0x40) >> 6;

+  cardinfo->SD_csd.RdBlockMisalign = (tmp & 0x20) >> 5;

+  cardinfo->SD_csd.DSRImpl = (tmp & 0x10) >> 4;

+  cardinfo->SD_csd.Reserved2 = 0; /* Reserved */

+

+  if ((CardType == SDIO_STD_CAPACITY_SD_CARD_V1_1) || (CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0))

+  {

+    cardinfo->SD_csd.DeviceSize = (tmp & 0x03) << 10;

+

+    /* Byte 7 */

+    tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);

+    cardinfo->SD_csd.DeviceSize |= (tmp) << 2;

+

+    /* Byte 8 */

+    tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);

+    cardinfo->SD_csd.DeviceSize |= (tmp & 0xC0) >> 6;

+

+    cardinfo->SD_csd.MaxRdCurrentVDDMin = (tmp & 0x38) >> 3;

+    cardinfo->SD_csd.MaxRdCurrentVDDMax = (tmp & 0x07);

+

+    /* Byte 9 */

+    tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);

+    cardinfo->SD_csd.MaxWrCurrentVDDMin = (tmp & 0xE0) >> 5;

+    cardinfo->SD_csd.MaxWrCurrentVDDMax = (tmp & 0x1C) >> 2;

+    cardinfo->SD_csd.DeviceSizeMul = (tmp & 0x03) << 1;

+    /* Byte 10 */

+    tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);

+    cardinfo->SD_csd.DeviceSizeMul |= (tmp & 0x80) >> 7;

+

+    cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) ;

+    cardinfo->CardCapacity *= (1 << (cardinfo->SD_csd.DeviceSizeMul + 2));

+    cardinfo->CardBlockSize = 1 << (cardinfo->SD_csd.RdBlockLen);

+    cardinfo->CardCapacity *= cardinfo->CardBlockSize;

+  }

+  else if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)

+  {

+    /* Byte 7 */

+    tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);

+    cardinfo->SD_csd.DeviceSize = (tmp & 0x3F) << 16;

+

+    /* Byte 8 */

+    tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);

+

+    cardinfo->SD_csd.DeviceSize |= (tmp << 8);

+

+    /* Byte 9 */

+    tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);

+

+    cardinfo->SD_csd.DeviceSize |= (tmp);

+

+    /* Byte 10 */

+    tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);

+

+    cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) * 512 * 1024;

+    cardinfo->CardBlockSize = 512;

+  }

+

+

+  cardinfo->SD_csd.EraseGrSize = (tmp & 0x40) >> 6;

+  cardinfo->SD_csd.EraseGrMul = (tmp & 0x3F) << 1;

+

+  /* Byte 11 */

+  tmp = (uint8_t)(CSD_Tab[2] & 0x000000FF);

+  cardinfo->SD_csd.EraseGrMul |= (tmp & 0x80) >> 7;

+  cardinfo->SD_csd.WrProtectGrSize = (tmp & 0x7F);

+

+  /* Byte 12 */

+  tmp = (uint8_t)((CSD_Tab[3] & 0xFF000000) >> 24);

+  cardinfo->SD_csd.WrProtectGrEnable = (tmp & 0x80) >> 7;

+  cardinfo->SD_csd.ManDeflECC = (tmp & 0x60) >> 5;

+  cardinfo->SD_csd.WrSpeedFact = (tmp & 0x1C) >> 2;

+  cardinfo->SD_csd.MaxWrBlockLen = (tmp & 0x03) << 2;

+

+  /* Byte 13 */

+  tmp = (uint8_t)((CSD_Tab[3] & 0x00FF0000) >> 16);

+  cardinfo->SD_csd.MaxWrBlockLen |= (tmp & 0xC0) >> 6;

+  cardinfo->SD_csd.WriteBlockPaPartial = (tmp & 0x20) >> 5;

+  cardinfo->SD_csd.Reserved3 = 0;

+  cardinfo->SD_csd.ContentProtectAppli = (tmp & 0x01);

+

+  /* Byte 14 */

+  tmp = (uint8_t)((CSD_Tab[3] & 0x0000FF00) >> 8);

+  cardinfo->SD_csd.FileFormatGrouop = (tmp & 0x80) >> 7;

+  cardinfo->SD_csd.CopyFlag = (tmp & 0x40) >> 6;

+  cardinfo->SD_csd.PermWrProtect = (tmp & 0x20) >> 5;

+  cardinfo->SD_csd.TempWrProtect = (tmp & 0x10) >> 4;

+  cardinfo->SD_csd.FileFormat = (tmp & 0x0C) >> 2;

+  cardinfo->SD_csd.ECC = (tmp & 0x03);

+

+  /* Byte 15 */

+  tmp = (uint8_t)(CSD_Tab[3] & 0x000000FF);

+  cardinfo->SD_csd.CSD_CRC = (tmp & 0xFE) >> 1;

+  cardinfo->SD_csd.Reserved4 = 1;

+

+

+  /* Byte 0 */

+  tmp = (uint8_t)((CID_Tab[0] & 0xFF000000) >> 24);

+  cardinfo->SD_cid.ManufacturerID = tmp;

+

+  /* Byte 1 */

+  tmp = (uint8_t)((CID_Tab[0] & 0x00FF0000) >> 16);

+  cardinfo->SD_cid.OEM_AppliID = tmp << 8;

+

+  /* Byte 2 */

+  tmp = (uint8_t)((CID_Tab[0] & 0x000000FF00) >> 8);

+  cardinfo->SD_cid.OEM_AppliID |= tmp;

+

+  /* Byte 3 */

+  tmp = (uint8_t)(CID_Tab[0] & 0x000000FF);

+  cardinfo->SD_cid.ProdName1 = tmp << 24;

+

+  /* Byte 4 */

+  tmp = (uint8_t)((CID_Tab[1] & 0xFF000000) >> 24);

+  cardinfo->SD_cid.ProdName1 |= tmp << 16;

+

+  /* Byte 5 */

+  tmp = (uint8_t)((CID_Tab[1] & 0x00FF0000) >> 16);

+  cardinfo->SD_cid.ProdName1 |= tmp << 8;

+

+  /* Byte 6 */

+  tmp = (uint8_t)((CID_Tab[1] & 0x0000FF00) >> 8);

+  cardinfo->SD_cid.ProdName1 |= tmp;

+

+  /* Byte 7 */

+  tmp = (uint8_t)(CID_Tab[1] & 0x000000FF);

+  cardinfo->SD_cid.ProdName2 = tmp;

+

+  /* Byte 8 */

+  tmp = (uint8_t)((CID_Tab[2] & 0xFF000000) >> 24);

+  cardinfo->SD_cid.ProdRev = tmp;

+

+  /* Byte 9 */

+  tmp = (uint8_t)((CID_Tab[2] & 0x00FF0000) >> 16);

+  cardinfo->SD_cid.ProdSN = tmp << 24;

+

+  /* Byte 10 */

+  tmp = (uint8_t)((CID_Tab[2] & 0x0000FF00) >> 8);

+  cardinfo->SD_cid.ProdSN |= tmp << 16;

+

+  /* Byte 11 */

+  tmp = (uint8_t)(CID_Tab[2] & 0x000000FF);

+  cardinfo->SD_cid.ProdSN |= tmp << 8;

+

+  /* Byte 12 */

+  tmp = (uint8_t)((CID_Tab[3] & 0xFF000000) >> 24);

+  cardinfo->SD_cid.ProdSN |= tmp;

+

+  /* Byte 13 */

+  tmp = (uint8_t)((CID_Tab[3] & 0x00FF0000) >> 16);

+  cardinfo->SD_cid.Reserved1 |= (tmp & 0xF0) >> 4;

+  cardinfo->SD_cid.ManufactDate = (tmp & 0x0F) << 8;

+

+  /* Byte 14 */

+  tmp = (uint8_t)((CID_Tab[3] & 0x0000FF00) >> 8);

+  cardinfo->SD_cid.ManufactDate |= tmp;

+

+  /* Byte 15 */

+  tmp = (uint8_t)(CID_Tab[3] & 0x000000FF);

+  cardinfo->SD_cid.CID_CRC = (tmp & 0xFE) >> 1;

+  cardinfo->SD_cid.Reserved2 = 1;

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Enables wide bus opeartion for the requeseted card if

+  *   supported by card.

+  * @param  WideMode: Specifies the SD card wide bus mode.

+  *   This parameter can be one of the following values:

+  *     @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)

+  *     @arg SDIO_BusWide_4b: 4-bit data transfer

+  *     @arg SDIO_BusWide_1b: 1-bit data transfer

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_EnableWideBusOperation(uint32_t WideMode)

+{

+  SD_Error errorstatus = SD_OK;

+

+  /* MMC Card doesn't support this feature */

+  if (SDIO_MULTIMEDIA_CARD == CardType)

+  {

+    errorstatus = SD_UNSUPPORTED_FEATURE;

+    return(errorstatus);

+  }

+  else if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))

+  {

+    if (SDIO_BusWide_8b == WideMode)

+    {

+      errorstatus = SD_UNSUPPORTED_FEATURE;

+      return(errorstatus);

+    }

+    else if (SDIO_BusWide_4b == WideMode)

+    {

+      errorstatus = SDEnWideBus(ENABLE);

+

+      if (SD_OK == errorstatus)

+      {

+        /* Configure the SDIO peripheral */

+        SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;

+        SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;

+        SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;

+        SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;

+        SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_4b;

+        SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;

+        SDIO_Init(&SDIO_InitStructure);

+      }

+    }

+    else

+    {

+      errorstatus = SDEnWideBus(DISABLE);

+

+      if (SD_OK == errorstatus)

+      {

+        /* Configure the SDIO peripheral */

+        SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;

+        SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;

+        SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;

+        SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;

+        SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;

+        SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;

+        SDIO_Init(&SDIO_InitStructure);

+      }

+    }

+  }

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Sets device mode whether to operate in Polling, Interrupt or

+  *   DMA mode.

+  * @param  Mode: Specifies the Data Transfer mode.

+  *   This parameter can be one of the following values:

+  *     @arg SD_DMA_MODE: Data transfer using DMA.

+  *     @arg SD_INTERRUPT_MODE: Data transfer using interrupts.

+  *     @arg SD_POLLING_MODE: Data transfer using flags.

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_SetDeviceMode(uint32_t Mode)

+{

+  SD_Error errorstatus = SD_OK;

+

+  if ((Mode == SD_DMA_MODE) || (Mode == SD_INTERRUPT_MODE) || (Mode == SD_POLLING_MODE))

+  {

+    DeviceMode = Mode;

+  }

+  else

+  {

+    errorstatus = SD_INVALID_PARAMETER;

+  }

+  return(errorstatus);

+

+}

+

+/**

+  * @brief  Selects od Deselects the corresponding card.

+  * @param  addr: Address of the Card to be selected.

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_SelectDeselect(uint32_t addr)

+{

+  SD_Error errorstatus = SD_OK;

+

+  /* Send CMD7 SDIO_SEL_DESEL_CARD */

+  SDIO_CmdInitStructure.SDIO_Argument =  addr;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEL_DESEL_CARD;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+  errorstatus = CmdResp1Error(SDIO_SEL_DESEL_CARD);

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Allows to read one block from a specified address in a card.

+  * @param  addr: Address from where data are to be read.

+  * @param  readbuff: pointer to the buffer that will contain the

+  *   received data

+  * @param  BlockSize: the SD card Data block size.

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_ReadBlock(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize)

+{

+  SD_Error errorstatus = SD_OK;

+  uint32_t count = 0, *tempbuff = readbuff;

+  uint8_t power = 0;

+

+  if (NULL == readbuff)

+  {

+    errorstatus = SD_INVALID_PARAMETER;

+    return(errorstatus);

+  }

+

+  TransferError = SD_OK;

+  TransferEnd = 0;

+  TotalNumberOfBytes = 0;

+

+  /* Clear all DPSM configuration */

+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;

+  SDIO_DataInitStructure.SDIO_DataLength = 0;

+  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;

+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;

+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;

+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;

+  SDIO_DataConfig(&SDIO_DataInitStructure);

+  SDIO_DMACmd(DISABLE);

+

+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)

+  {

+    errorstatus = SD_LOCK_UNLOCK_FAILED;

+    return(errorstatus);

+  }

+

+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)

+  {

+    BlockSize = 512;

+    addr /= 512;

+  }

+  if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))

+  {

+    power = convert_from_bytes_to_power_of_two(BlockSize);

+

+    /* Set Block Size for Card */

+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;

+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;

+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+    SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);

+

+    if (SD_OK != errorstatus)

+    {

+      return(errorstatus);

+    }

+  }

+  else

+  {

+    errorstatus = SD_INVALID_PARAMETER;

+    return(errorstatus);

+  }

+

+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;

+  SDIO_DataInitStructure.SDIO_DataLength = BlockSize;

+  SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;

+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;

+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;

+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;

+  SDIO_DataConfig(&SDIO_DataInitStructure);

+

+  TotalNumberOfBytes = BlockSize;

+  StopCondition = 0;

+  DestBuffer = readbuff;

+

+  /* Send CMD17 READ_SINGLE_BLOCK */

+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)addr;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_READ_SINGLE_BLOCK;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+  errorstatus = CmdResp1Error(SDIO_READ_SINGLE_BLOCK);

+

+  if (errorstatus != SD_OK)

+  {

+    return(errorstatus);

+  }

+  /* In case of single block transfer, no need of stop transfer at all.*/

+  if (DeviceMode == SD_POLLING_MODE)

+  {

+    /* Polling mode */

+    while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))

+    {

+      if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)

+      {

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

+        {

+          *(tempbuff + count) = SDIO_ReadData();

+        }

+        tempbuff += 8;

+      }

+    }

+

+    if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)

+    {

+      SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);

+      errorstatus = SD_DATA_TIMEOUT;

+      return(errorstatus);

+    }

+    else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)

+    {

+      SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);

+      errorstatus = SD_DATA_CRC_FAIL;

+      return(errorstatus);

+    }

+    else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)

+    {

+      SDIO_ClearFlag(SDIO_FLAG_RXOVERR);

+      errorstatus = SD_RX_OVERRUN;

+      return(errorstatus);

+    }

+    else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)

+    {

+      SDIO_ClearFlag(SDIO_FLAG_STBITERR);

+      errorstatus = SD_START_BIT_ERR;

+      return(errorstatus);

+    }

+    while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)

+    {

+      *tempbuff = SDIO_ReadData();

+      tempbuff++;

+    }

+

+    /* Clear all the static flags */

+    SDIO_ClearFlag(SDIO_STATIC_FLAGS);

+  }

+  else if (DeviceMode == SD_INTERRUPT_MODE)

+  {

+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_RXFIFOHF | SDIO_IT_STBITERR, ENABLE);

+    while ((TransferEnd == 0) && (TransferError == SD_OK))

+    {}

+    if (TransferError != SD_OK)

+    {

+      return(TransferError);

+    }

+  }

+  else if (DeviceMode == SD_DMA_MODE)

+  {

+    rt_tick_t tick;

+	

+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);

+    SDIO_DMACmd(ENABLE);

+	tick = rt_tick_get();

+    DMA_RxConfiguration(readbuff, BlockSize);

+    while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)

+    { 

+      if ((TransferError != SD_OK) || (rt_tick_get() - tick > 10))

+	  { 

+	    errorstatus = SD_ERROR; 

+		// rt_kprintf("sd error\n");

+		break;

+	  }

+	}

+  }

+  return(errorstatus);

+}

+

+/**

+  * @brief  Allows to read blocks from a specified address  in a card.

+  * @param  addr: Address from where data are to be read.

+  * @param  readbuff: pointer to the buffer that will contain the

+  *   received data.

+  * @param  BlockSize: the SD card Data block size.

+  * @param  NumberOfBlocks: number of blocks to be read.

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_ReadMultiBlocks(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize, uint32_t NumberOfBlocks)

+{

+  SD_Error errorstatus = SD_OK;

+  uint32_t count = 0, *tempbuff = readbuff;

+  uint8_t power = 0;

+

+  if (NULL == readbuff)

+  {

+    errorstatus = SD_INVALID_PARAMETER;

+    return(errorstatus);

+  }

+

+  TransferError = SD_OK;

+  TransferEnd = 0;

+  TotalNumberOfBytes = 0;

+

+  /* Clear all DPSM configuration */

+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;

+  SDIO_DataInitStructure.SDIO_DataLength = 0;

+  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;

+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;

+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;

+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;

+  SDIO_DataConfig(&SDIO_DataInitStructure);

+  SDIO_DMACmd(DISABLE);

+

+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)

+  {

+    errorstatus = SD_LOCK_UNLOCK_FAILED;

+    return(errorstatus);

+  }

+

+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)

+  {

+    BlockSize = 512;

+    addr /= 512;

+  }

+

+  if ((BlockSize > 0) && (BlockSize <= 2048) && (0 == (BlockSize & (BlockSize - 1))))

+  {

+    power = convert_from_bytes_to_power_of_two(BlockSize);

+

+    /* Set Block Size for Card */

+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;

+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;

+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+    SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);

+

+    if (SD_OK != errorstatus)

+    {

+      return(errorstatus);

+    }

+  }

+  else

+  {

+    errorstatus = SD_INVALID_PARAMETER;

+    return(errorstatus);

+  }

+

+  if (NumberOfBlocks > 1)

+  {

+    /* Common to all modes */

+    if (NumberOfBlocks * BlockSize > SD_MAX_DATA_LENGTH)

+    {

+      errorstatus = SD_INVALID_PARAMETER;

+      return(errorstatus);

+    }

+

+    TotalNumberOfBytes = NumberOfBlocks * BlockSize;

+    StopCondition = 1;

+    DestBuffer = readbuff;

+

+    SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;

+    SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;

+    SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;

+    SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;

+    SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;

+    SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;

+    SDIO_DataConfig(&SDIO_DataInitStructure);

+

+    /* Send CMD18 READ_MULT_BLOCK with argument data address */

+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)addr;

+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_READ_MULT_BLOCK;

+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+    SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+    errorstatus = CmdResp1Error(SDIO_READ_MULT_BLOCK);

+

+    if (errorstatus != SD_OK)

+    {

+      return(errorstatus);

+    }

+

+    if (DeviceMode == SD_POLLING_MODE)

+    {

+      /* Polling mode */

+      while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DATAEND | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))

+      {

+        if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)

+        {

+          for (count = 0; count < SD_HALFFIFO; count++)

+          {

+            *(tempbuff + count) = SDIO_ReadData();

+          }

+          tempbuff += SD_HALFFIFO;

+        }

+      }

+

+      if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)

+      {

+        SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);

+        errorstatus = SD_DATA_TIMEOUT;

+        return(errorstatus);

+      }

+      else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)

+      {

+        SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);

+        errorstatus = SD_DATA_CRC_FAIL;

+        return(errorstatus);

+      }

+      else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)

+      {

+        SDIO_ClearFlag(SDIO_FLAG_RXOVERR);

+        errorstatus = SD_RX_OVERRUN;

+        return(errorstatus);

+      }

+      else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)

+      {

+        SDIO_ClearFlag(SDIO_FLAG_STBITERR);

+        errorstatus = SD_START_BIT_ERR;

+        return(errorstatus);

+      }

+      while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)

+      {

+        *tempbuff = SDIO_ReadData();

+        tempbuff++;

+      }

+

+      if (SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)

+      {

+        /* In Case Of SD-CARD Send Command STOP_TRANSMISSION */

+        if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType))

+        {

+          /* Send CMD12 STOP_TRANSMISSION */

+          SDIO_CmdInitStructure.SDIO_Argument = 0x0;

+          SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_STOP_TRANSMISSION;

+          SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+          SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+          SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+          SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+          errorstatus = CmdResp1Error(SDIO_STOP_TRANSMISSION);

+

+          if (errorstatus != SD_OK)

+          {

+            return(errorstatus);

+          }

+        }

+      }

+      /* Clear all the static flags */

+      SDIO_ClearFlag(SDIO_STATIC_FLAGS);

+    }

+    else if (DeviceMode == SD_INTERRUPT_MODE)

+    {

+      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_RXFIFOHF | SDIO_IT_STBITERR, ENABLE);

+      while ((TransferEnd == 0) && (TransferError == SD_OK))

+      {}

+      if (TransferError != SD_OK)

+      {

+        return(TransferError);

+      }

+    }

+    else if (DeviceMode == SD_DMA_MODE)

+    {

+      rt_tick_t tick;

+	  

+      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);

+      SDIO_DMACmd(ENABLE);

+	  tick = rt_tick_get();

+      DMA_RxConfiguration(readbuff, (NumberOfBlocks * BlockSize));

+      while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)

+	  { 

+		if ((TransferError != SD_OK) || (rt_tick_get() - tick > 10))

+		{ 

+		  errorstatus = SD_ERROR; 

+		  // rt_kprintf("sd error\n");

+		  return errorstatus;

+		}

+	  }

+      while ((TransferEnd == 0) && (TransferError == SD_OK))

+      {}

+      if (TransferError != SD_OK)

+      {

+        return(TransferError);

+      }

+    }

+  }

+  return(errorstatus);

+}

+

+/**

+  * @brief  Allows to write one block starting from a specified address

+  *   in a card.

+  * @param  addr: Address from where data are to be read.

+  * @param  writebuff: pointer to the buffer that contain the data to be

+  *   transferred.

+  * @param  BlockSize: the SD card Data block size.

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_WriteBlock(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize)

+{

+  SD_Error errorstatus = SD_OK;

+  uint8_t  power = 0, cardstate = 0;

+  uint32_t timeout = 0, bytestransferred = 0;

+  uint32_t cardstatus = 0, count = 0, restwords = 0;

+  uint32_t *tempbuff = writebuff;

+

+  if (writebuff == NULL)

+  {

+    errorstatus = SD_INVALID_PARAMETER;

+    return(errorstatus);

+  }

+

+  TransferError = SD_OK;

+  TransferEnd = 0;

+  TotalNumberOfBytes = 0;

+

+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;

+  SDIO_DataInitStructure.SDIO_DataLength = 0;

+  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;

+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;

+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;

+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;

+  SDIO_DataConfig(&SDIO_DataInitStructure);

+  SDIO_DMACmd(DISABLE);

+

+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)

+  {

+    errorstatus = SD_LOCK_UNLOCK_FAILED;

+    return(errorstatus);

+  }

+

+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)

+  {

+    BlockSize = 512;

+    addr /= 512;

+  }

+

+  /* Set the block size, both on controller and card */

+  if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))

+  {

+    power = convert_from_bytes_to_power_of_two(BlockSize);

+

+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;

+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;

+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+    SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);

+

+    if (errorstatus != SD_OK)

+    {

+      return(errorstatus);

+    }

+  }

+  else

+  {

+    errorstatus = SD_INVALID_PARAMETER;

+    return(errorstatus);

+  }

+

+  /* Wait till card is ready for data Added */

+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+  errorstatus = CmdResp1Error(SDIO_SEND_STATUS);

+

+  if (errorstatus != SD_OK)

+  {

+    return(errorstatus);

+  }

+

+  cardstatus = SDIO_GetResponse(SDIO_RESP1);

+

+  timeout = SD_DATATIMEOUT;

+

+  while (((cardstatus & 0x00000100) == 0) && (timeout > 0))

+  {

+    timeout--;

+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);

+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;

+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+    SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+    errorstatus = CmdResp1Error(SDIO_SEND_STATUS);

+

+    if (errorstatus != SD_OK)

+    {

+      return(errorstatus);

+    }

+    cardstatus = SDIO_GetResponse(SDIO_RESP1);

+  }

+

+  if (timeout == 0)

+  {

+    return(SD_ERROR);

+  }

+

+  /* Send CMD24 WRITE_SINGLE_BLOCK */

+  SDIO_CmdInitStructure.SDIO_Argument = addr;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_WRITE_SINGLE_BLOCK;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+  errorstatus = CmdResp1Error(SDIO_WRITE_SINGLE_BLOCK);

+

+  if (errorstatus != SD_OK)

+  {

+    return(errorstatus);

+  }

+

+  TotalNumberOfBytes = BlockSize;

+  StopCondition = 0;

+  SrcBuffer = writebuff;

+

+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;

+  SDIO_DataInitStructure.SDIO_DataLength = BlockSize;

+  SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;

+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;

+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;

+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;

+  SDIO_DataConfig(&SDIO_DataInitStructure);

+

+  /* In case of single data block transfer no need of stop command at all */

+  if (DeviceMode == SD_POLLING_MODE)

+  {

+    while (!(SDIO->STA & (SDIO_FLAG_DBCKEND | SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))

+    {

+      if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)

+      {

+        if ((TotalNumberOfBytes - bytestransferred) < 32)

+        {

+          restwords = ((TotalNumberOfBytes - bytestransferred) % 4 == 0) ? ((TotalNumberOfBytes - bytestransferred) / 4) : (( TotalNumberOfBytes -  bytestransferred) / 4 + 1);

+

+          for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)

+          {

+            SDIO_WriteData(*tempbuff);

+          }

+        }

+        else

+        {

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

+          {

+            SDIO_WriteData(*(tempbuff + count));

+          }

+          tempbuff += 8;

+          bytestransferred += 32;

+        }

+      }

+    }

+    if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)

+    {

+      SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);

+      errorstatus = SD_DATA_TIMEOUT;

+      return(errorstatus);

+    }

+    else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)

+    {

+      SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);

+      errorstatus = SD_DATA_CRC_FAIL;

+      return(errorstatus);

+    }

+    else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)

+    {

+      SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);

+      errorstatus = SD_TX_UNDERRUN;

+      return(errorstatus);

+    }

+    else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)

+    {

+      SDIO_ClearFlag(SDIO_FLAG_STBITERR);

+      errorstatus = SD_START_BIT_ERR;

+      return(errorstatus);

+    }

+  }

+  else if (DeviceMode == SD_INTERRUPT_MODE)

+  {

+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_FLAG_TXFIFOHE | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);

+    while ((TransferEnd == 0) && (TransferError == SD_OK))

+    {}

+    if (TransferError != SD_OK)

+    {

+      return(TransferError);

+    }

+  }

+  else if (DeviceMode == SD_DMA_MODE)

+  {

+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);

+    DMA_TxConfiguration(writebuff, BlockSize);

+    SDIO_DMACmd(ENABLE);

+    while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)

+    {}

+    while ((TransferEnd == 0) && (TransferError == SD_OK))

+    {}

+    if (TransferError != SD_OK)

+    {

+      return(TransferError);

+    }

+  }

+

+  /* Clear all the static flags */

+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);

+

+  /* Wait till the card is in programming state */

+  errorstatus = IsCardProgramming(&cardstate);

+

+  while ((errorstatus == SD_OK) && ((cardstate == SD_CARD_PROGRAMMING) || (cardstate == SD_CARD_RECEIVING)))

+  {

+    errorstatus = IsCardProgramming(&cardstate);

+  }

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Allows to write blocks starting from a specified address in

+  *   a card.

+  * @param  addr: Address from where data are to be read.

+  * @param  writebuff: pointer to the buffer that contain the data to be

+  *   transferred.

+  * @param  BlockSize: the SD card Data block size.

+  * @param  NumberOfBlocks: number of blocks to be written.

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_WriteMultiBlocks(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize, uint32_t NumberOfBlocks)

+{

+  SD_Error errorstatus = SD_OK;

+  uint8_t  power = 0, cardstate = 0;

+  uint32_t bytestransferred = 0;

+  uint32_t count = 0, restwords = 0;

+  uint32_t *tempbuff = writebuff;

+

+  if (writebuff == NULL)

+  {

+    errorstatus = SD_INVALID_PARAMETER;

+    return(errorstatus);

+  }

+

+  TransferError = SD_OK;

+  TransferEnd = 0;

+  TotalNumberOfBytes = 0;

+

+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;

+  SDIO_DataInitStructure.SDIO_DataLength = 0;

+  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;

+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;

+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;

+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;

+  SDIO_DataConfig(&SDIO_DataInitStructure);

+  SDIO_DMACmd(DISABLE);

+

+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)

+  {

+    errorstatus = SD_LOCK_UNLOCK_FAILED;

+    return(errorstatus);

+  }

+

+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)

+  {

+    BlockSize = 512;

+    addr /= 512;

+  }

+

+  /* Set the block size, both on controller and card */

+  if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))

+  {

+    power = convert_from_bytes_to_power_of_two(BlockSize);

+

+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;

+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;

+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+    SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);

+

+    if (errorstatus != SD_OK)

+    {

+      return(errorstatus);

+    }

+  }

+  else

+  {

+    errorstatus = SD_INVALID_PARAMETER;

+    return(errorstatus);

+  }

+

+  /* Wait till card is ready for data Added */

+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+  errorstatus = CmdResp1Error(SDIO_SEND_STATUS);

+

+  if (errorstatus != SD_OK)

+  {

+    return(errorstatus);

+  }

+

+  if (NumberOfBlocks > 1)

+  {

+    /* Common to all modes */

+    if (NumberOfBlocks * BlockSize > SD_MAX_DATA_LENGTH)

+    {

+      errorstatus = SD_INVALID_PARAMETER;

+      return(errorstatus);

+    }

+

+    if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))

+    {

+      /* To improve performance */

+      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);

+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;

+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+      SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+

+      errorstatus = CmdResp1Error(SDIO_APP_CMD);

+

+      if (errorstatus != SD_OK)

+      {

+        return(errorstatus);

+      }

+      /* To improve performance */

+      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)NumberOfBlocks;

+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCK_COUNT;

+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+      SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+      errorstatus = CmdResp1Error(SDIO_SET_BLOCK_COUNT);

+

+      if (errorstatus != SD_OK)

+      {

+        return(errorstatus);

+      }

+    }

+

+    /* Send CMD25 WRITE_MULT_BLOCK with argument data address */

+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)addr;

+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_WRITE_MULT_BLOCK;

+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+    SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+    errorstatus = CmdResp1Error(SDIO_WRITE_MULT_BLOCK);

+

+    if (SD_OK != errorstatus)

+    {

+      return(errorstatus);

+    }

+

+    TotalNumberOfBytes = NumberOfBlocks * BlockSize;

+    StopCondition = 1;

+    SrcBuffer = writebuff;

+

+    SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;

+    SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;

+    SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;

+    SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;

+    SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;

+    SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;

+    SDIO_DataConfig(&SDIO_DataInitStructure);

+

+    if (DeviceMode == SD_POLLING_MODE)

+    {

+      while (!(SDIO->STA & (SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DATAEND | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))

+      {

+        if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)

+        {

+          if (!((TotalNumberOfBytes - bytestransferred) < SD_HALFFIFOBYTES))

+          {

+            for (count = 0; count < SD_HALFFIFO; count++)

+            {

+              SDIO_WriteData(*(tempbuff + count));

+            }

+            tempbuff += SD_HALFFIFO;

+            bytestransferred += SD_HALFFIFOBYTES;

+          }

+          else

+          {

+            restwords = ((TotalNumberOfBytes - bytestransferred) % 4 == 0) ? ((TotalNumberOfBytes - bytestransferred) / 4) :

+                        ((TotalNumberOfBytes - bytestransferred) / 4 + 1);

+

+            for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)

+            {

+              SDIO_WriteData(*tempbuff);

+            }

+          }

+        }

+      }

+

+      if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)

+      {

+        SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);

+        errorstatus = SD_DATA_TIMEOUT;

+        return(errorstatus);

+      }

+      else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)

+      {

+        SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);

+        errorstatus = SD_DATA_CRC_FAIL;

+        return(errorstatus);

+      }

+      else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)

+      {

+        SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);

+        errorstatus = SD_TX_UNDERRUN;

+        return(errorstatus);

+      }

+      else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)

+      {

+        SDIO_ClearFlag(SDIO_FLAG_STBITERR);

+        errorstatus = SD_START_BIT_ERR;

+        return(errorstatus);

+      }

+

+      if (SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)

+      {

+       if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))

+        {

+          /* Send CMD12 STOP_TRANSMISSION */

+          SDIO_CmdInitStructure.SDIO_Argument = 0x0;

+          SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_STOP_TRANSMISSION;

+          SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+          SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+          SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+          SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+

+          errorstatus = CmdResp1Error(SDIO_STOP_TRANSMISSION);

+

+          if (errorstatus != SD_OK)

+          {

+            return(errorstatus);

+          }

+        }

+      }

+    }

+    else if (DeviceMode == SD_INTERRUPT_MODE)

+    {

+      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXFIFOHE | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);

+      while ((TransferEnd == 0) && (TransferError == SD_OK))

+      {}

+      if (TransferError != SD_OK)

+      {

+        return(TransferError);

+      }

+    }

+    else if (DeviceMode == SD_DMA_MODE)

+    {

+      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);

+      SDIO_DMACmd(ENABLE);

+      DMA_TxConfiguration(writebuff, (NumberOfBlocks * BlockSize));

+      while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)

+      {}

+      while ((TransferEnd == 0) && (TransferError == SD_OK))

+      {}

+      if (TransferError != SD_OK)

+      {

+        return(TransferError);

+      }

+    }

+  }

+  /* Clear all the static flags */

+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);

+

+  /* Wait till the card is in programming state */

+  errorstatus = IsCardProgramming(&cardstate);

+

+  while ((errorstatus == SD_OK) && ((cardstate == SD_CARD_PROGRAMMING) || (cardstate == SD_CARD_RECEIVING)))

+  {

+    errorstatus = IsCardProgramming(&cardstate);

+  }

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Gets the cuurent data transfer state.

+  * @param  None

+  * @retval SDTransferState: Data Transfer state.

+  *   This value can be:

+  *             - SD_NO_TRANSFER: No data transfer is acting

+  *             - SD_TRANSFER_IN_PROGRESS: Data transfer is acting

+  */

+SDTransferState SD_GetTransferState(void)

+{

+  if (SDIO->STA & (SDIO_FLAG_TXACT | SDIO_FLAG_RXACT))

+  {

+    return(SD_TRANSFER_IN_PROGRESS);

+  }

+  else

+  {

+    return(SD_NO_TRANSFER);

+  }

+}

+

+/**

+  * @brief  Aborts an ongoing data transfer.

+  * @param  None

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_StopTransfer(void)

+{

+  SD_Error errorstatus = SD_OK;

+

+  /* Send CMD12 STOP_TRANSMISSION  */

+  SDIO_CmdInitStructure.SDIO_Argument = 0x0;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_STOP_TRANSMISSION;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+  errorstatus = CmdResp1Error(SDIO_STOP_TRANSMISSION);

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Allows to erase memory area specified for the given card.

+  * @param  startaddr: the start address.

+  * @param  endaddr: the end address.

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr)

+{

+  SD_Error errorstatus = SD_OK;

+  uint32_t delay = 0;

+  __IO uint32_t maxdelay = 0;

+  uint8_t cardstate = 0;

+

+  /* Check if the card coomnd class supports erase command */

+  if (((CSD_Tab[1] >> 20) & SD_CCCC_ERASE) == 0)

+  {

+    errorstatus = SD_REQUEST_NOT_APPLICABLE;

+    return(errorstatus);

+  }

+

+  maxdelay = 72000 / ((SDIO->CLKCR & 0xFF) + 2);

+

+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)

+  {

+    errorstatus = SD_LOCK_UNLOCK_FAILED;

+    return(errorstatus);

+  }

+

+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)

+  {

+    startaddr /= 512;

+    endaddr /= 512;

+  }

+

+  /* According to sd-card spec 1.0 ERASE_GROUP_START (CMD32) and erase_group_end(CMD33) */

+  if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))

+  {

+    /* Send CMD32 SD_ERASE_GRP_START with argument as addr  */

+    SDIO_CmdInitStructure.SDIO_Argument = startaddr;

+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_ERASE_GRP_START;

+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+    SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+    errorstatus = CmdResp1Error(SDIO_SD_ERASE_GRP_START);

+    if (errorstatus != SD_OK)

+    {

+      return(errorstatus);

+    }

+

+    /* Send CMD33 SD_ERASE_GRP_END with argument as addr  */

+    SDIO_CmdInitStructure.SDIO_Argument = endaddr;

+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_ERASE_GRP_END;

+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+    SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+    errorstatus = CmdResp1Error(SDIO_SD_ERASE_GRP_END);

+    if (errorstatus != SD_OK)

+    {

+      return(errorstatus);

+    }

+  }

+

+  /* Send CMD38 ERASE */

+  SDIO_CmdInitStructure.SDIO_Argument = 0;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_ERASE;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+  errorstatus = CmdResp1Error(SDIO_ERASE);

+

+  if (errorstatus != SD_OK)

+  {

+    return(errorstatus);

+  }

+

+  for (delay = 0; delay < maxdelay; delay++)

+  {}

+

+  /* Wait till the card is in programming state */

+  errorstatus = IsCardProgramming(&cardstate);

+

+  while ((errorstatus == SD_OK) && ((SD_CARD_PROGRAMMING == cardstate) || (SD_CARD_RECEIVING == cardstate)))

+  {

+    errorstatus = IsCardProgramming(&cardstate);

+  }

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Returns the current card's status.

+  * @param  pcardstatus: pointer to the buffer that will contain the SD

+  *   card status (Card Status register).

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_SendStatus(uint32_t *pcardstatus)

+{

+  SD_Error errorstatus = SD_OK;

+

+  if (pcardstatus == NULL)

+  {

+    errorstatus = SD_INVALID_PARAMETER;

+    return(errorstatus);

+  }

+

+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+

+  errorstatus = CmdResp1Error(SDIO_SEND_STATUS);

+

+  if (errorstatus != SD_OK)

+  {

+    return(errorstatus);

+  }

+

+  *pcardstatus = SDIO_GetResponse(SDIO_RESP1);

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Returns the current SD card's status.

+  * @param  psdstatus: pointer to the buffer that will contain the SD

+  *   card status (SD Status register).

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_SendSDStatus(uint32_t *psdstatus)

+{

+  SD_Error errorstatus = SD_OK;

+  uint32_t count = 0;

+

+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)

+  {

+    errorstatus = SD_LOCK_UNLOCK_FAILED;

+    return(errorstatus);

+  }

+

+  /* Set block size for card if it is not equal to current block size for card. */

+  SDIO_CmdInitStructure.SDIO_Argument = 64;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+  errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);

+

+  if (errorstatus != SD_OK)

+  {

+    return(errorstatus);

+  }

+

+  /* CMD55 */

+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+  errorstatus = CmdResp1Error(SDIO_APP_CMD);

+

+  if (errorstatus != SD_OK)

+  {

+    return(errorstatus);

+  }

+

+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;

+  SDIO_DataInitStructure.SDIO_DataLength = 64;

+  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_64b;

+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;

+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;

+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;

+  SDIO_DataConfig(&SDIO_DataInitStructure);

+

+  /* Send ACMD13 SD_APP_STAUS  with argument as card's RCA.*/

+  SDIO_CmdInitStructure.SDIO_Argument = 0;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_APP_STAUS;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+  errorstatus = CmdResp1Error(SDIO_SD_APP_STAUS);

+

+  if (errorstatus != SD_OK)

+  {

+    return(errorstatus);

+  }

+

+  while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))

+  {

+    if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)

+    {

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

+      {

+        *(psdstatus + count) = SDIO_ReadData();

+      }

+      psdstatus += 8;

+    }

+  }

+

+  if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)

+  {

+    SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);

+    errorstatus = SD_DATA_TIMEOUT;

+    return(errorstatus);

+  }

+  else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)

+  {

+    SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);

+    errorstatus = SD_DATA_CRC_FAIL;

+    return(errorstatus);

+  }

+  else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)

+  {

+    SDIO_ClearFlag(SDIO_FLAG_RXOVERR);

+    errorstatus = SD_RX_OVERRUN;

+    return(errorstatus);

+  }

+  else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)

+  {

+    SDIO_ClearFlag(SDIO_FLAG_STBITERR);

+    errorstatus = SD_START_BIT_ERR;

+    return(errorstatus);

+  }

+

+  while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)

+  {

+    *psdstatus = SDIO_ReadData();

+    psdstatus++;

+  }

+

+  /* Clear all the static status flags*/

+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);

+  psdstatus -= 16;

+  for (count = 0; count < 16; count++)

+  {

+    psdstatus[count] = ((psdstatus[count] & SD_0TO7BITS) << 24) |((psdstatus[count] & SD_8TO15BITS) << 8) |

+                       ((psdstatus[count] & SD_16TO23BITS) >> 8) |((psdstatus[count] & SD_24TO31BITS) >> 24);

+  }

+  return(errorstatus);

+}

+

+/**

+  * @brief  Allows to process all the interrupts that are high.

+  * @param  None

+  * @retval SD_Error: SD Card Error code.

+  */

+SD_Error SD_ProcessIRQSrc(void)

+{

+  uint32_t count = 0, restwords = 0;

+

+  if (DeviceMode == SD_INTERRUPT_MODE)

+  {

+    if (SDIO_GetITStatus(SDIO_IT_RXFIFOHF) != RESET)

+    {

+      for (count = 0; count < SD_HALFFIFO; count++)

+      {

+        *(DestBuffer + count) = SDIO_ReadData();

+      }

+      DestBuffer += SD_HALFFIFO;

+      NumberOfBytes += SD_HALFFIFOBYTES;

+    }

+    else if (SDIO_GetITStatus(SDIO_IT_TXFIFOHE) != RESET)

+    {

+      if ((TotalNumberOfBytes - NumberOfBytes) < SD_HALFFIFOBYTES)

+      {

+        restwords = ((TotalNumberOfBytes - NumberOfBytes) %  4 == 0) ?

+                    ((TotalNumberOfBytes - NumberOfBytes) / 4) :

+                    ((TotalNumberOfBytes - NumberOfBytes) / 4 + 1);

+

+        for (count = 0; count < restwords;  count++, SrcBuffer++, NumberOfBytes += 4)

+        {

+          SDIO_WriteData(*SrcBuffer);

+        }

+      }

+      else

+      {

+        for (count = 0; count < SD_HALFFIFO; count++)

+        {

+          SDIO_WriteData(*(SrcBuffer + count));

+        }

+

+        SrcBuffer += SD_HALFFIFO;

+        NumberOfBytes += SD_HALFFIFOBYTES;

+      }

+    }

+  }

+

+  if (SDIO_GetITStatus(SDIO_IT_DATAEND) != RESET)

+  {

+    if (DeviceMode != SD_DMA_MODE)

+    {

+      while ((SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)  &&  (NumberOfBytes < TotalNumberOfBytes))

+      {

+        *DestBuffer = SDIO_ReadData();

+        DestBuffer++;

+        NumberOfBytes += 4;

+      }

+    }

+

+    if (StopCondition == 1)

+    {

+      TransferError = SD_StopTransfer();

+    }

+    else

+    {

+      TransferError = SD_OK;

+    }

+    SDIO_ClearITPendingBit(SDIO_IT_DATAEND);

+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |

+                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |

+                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);

+    TransferEnd = 1;

+    NumberOfBytes = 0;

+    return(TransferError);

+  }

+

+  if (SDIO_GetITStatus(SDIO_IT_DCRCFAIL) != RESET)

+  {

+    SDIO_ClearITPendingBit(SDIO_IT_DCRCFAIL);

+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |

+                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |

+                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);

+    NumberOfBytes = 0;

+    TransferError = SD_DATA_CRC_FAIL;

+    return(SD_DATA_CRC_FAIL);

+  }

+

+  if (SDIO_GetITStatus(SDIO_IT_DTIMEOUT) != RESET)

+  {

+    SDIO_ClearITPendingBit(SDIO_IT_DTIMEOUT);

+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |

+                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |

+                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);

+    NumberOfBytes = 0;

+    TransferError = SD_DATA_TIMEOUT;

+    return(SD_DATA_TIMEOUT);

+  }

+

+  if (SDIO_GetITStatus(SDIO_IT_RXOVERR) != RESET)

+  {

+    SDIO_ClearITPendingBit(SDIO_IT_RXOVERR);

+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |

+                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |

+                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);

+    NumberOfBytes = 0;

+    TransferError = SD_RX_OVERRUN;

+    return(SD_RX_OVERRUN);

+  }

+

+  if (SDIO_GetITStatus(SDIO_IT_TXUNDERR) != RESET)

+  {

+    SDIO_ClearITPendingBit(SDIO_IT_TXUNDERR);

+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |

+                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |

+                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);

+    NumberOfBytes = 0;

+    TransferError = SD_TX_UNDERRUN;

+    return(SD_TX_UNDERRUN);

+  }

+

+  if (SDIO_GetITStatus(SDIO_IT_STBITERR) != RESET)

+  {

+    SDIO_ClearITPendingBit(SDIO_IT_STBITERR);

+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |

+                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |

+                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);

+    NumberOfBytes = 0;

+    TransferError = SD_START_BIT_ERR;

+    return(SD_START_BIT_ERR);

+  }

+

+  return(SD_OK);

+}

+

+/**

+  * @brief  Checks for error conditions for CMD0.

+  * @param  None

+  * @retval SD_Error: SD Card Error code.

+  */

+static SD_Error CmdError(void)

+{

+  SD_Error errorstatus = SD_OK;

+  uint32_t timeout;

+

+  timeout = SDIO_CMD0TIMEOUT; /* 10000 */

+

+  while ((timeout > 0) && (SDIO_GetFlagStatus(SDIO_FLAG_CMDSENT) == RESET))

+  {

+    timeout--;

+  }

+

+  if (timeout == 0)

+  {

+    errorstatus = SD_CMD_RSP_TIMEOUT;

+    return(errorstatus);

+  }

+

+  /* Clear all the static flags */

+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Checks for error conditions for R7.

+  *   response.

+  * @param  None

+  * @retval SD_Error: SD Card Error code.

+  */

+static SD_Error CmdResp7Error(void)

+{

+  SD_Error errorstatus = SD_OK;

+  uint32_t status;

+  uint32_t timeout = SDIO_CMD0TIMEOUT;

+

+  status = SDIO->STA;

+

+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)) && (timeout > 0))

+  {

+    timeout--;

+    status = SDIO->STA;

+  }

+

+  if ((timeout == 0) || (status & SDIO_FLAG_CTIMEOUT))

+  {

+    /* Card is not V2.0 complient or card does not support the set voltage range */

+    errorstatus = SD_CMD_RSP_TIMEOUT;

+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);

+    return(errorstatus);

+  }

+

+  if (status & SDIO_FLAG_CMDREND)

+  {

+    /* Card is SD V2.0 compliant */

+    errorstatus = SD_OK;

+    SDIO_ClearFlag(SDIO_FLAG_CMDREND);

+    return(errorstatus);

+  }

+  return(errorstatus);

+}

+

+/**

+  * @brief  Checks for error conditions for R1.

+  *   response

+  * @param  cmd: The sent command index.

+  * @retval SD_Error: SD Card Error code.

+  */

+static SD_Error CmdResp1Error(uint8_t cmd)

+{

+  SD_Error errorstatus = SD_OK;

+  uint32_t status;

+  uint32_t response_r1;

+

+  status = SDIO->STA;

+

+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))

+  {

+    status = SDIO->STA;

+  }

+

+  if (status & SDIO_FLAG_CTIMEOUT)

+  {

+    errorstatus = SD_CMD_RSP_TIMEOUT;

+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);

+    return(errorstatus);

+  }

+  else if (status & SDIO_FLAG_CCRCFAIL)

+  {

+    errorstatus = SD_CMD_CRC_FAIL;

+    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);

+    return(errorstatus);

+  }

+

+  /* Check response received is of desired command */

+  if (SDIO_GetCommandResponse() != cmd)

+  {

+    errorstatus = SD_ILLEGAL_CMD;

+    return(errorstatus);

+  }

+

+  /* Clear all the static flags */

+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);

+

+  /* We have received response, retrieve it for analysis  */

+  response_r1 = SDIO_GetResponse(SDIO_RESP1);

+

+  if ((response_r1 & SD_OCR_ERRORBITS) == SD_ALLZERO)

+  {

+    return(errorstatus);

+  }

+

+  if (response_r1 & SD_OCR_ADDR_OUT_OF_RANGE)

+  {

+    return(SD_ADDR_OUT_OF_RANGE);

+  }

+

+  if (response_r1 & SD_OCR_ADDR_MISALIGNED)

+  {

+    return(SD_ADDR_MISALIGNED);

+  }

+

+  if (response_r1 & SD_OCR_BLOCK_LEN_ERR)

+  {

+    return(SD_BLOCK_LEN_ERR);

+  }

+

+  if (response_r1 & SD_OCR_ERASE_SEQ_ERR)

+  {

+    return(SD_ERASE_SEQ_ERR);

+  }

+

+  if (response_r1 & SD_OCR_BAD_ERASE_PARAM)

+  {

+    return(SD_BAD_ERASE_PARAM);

+  }

+

+  if (response_r1 & SD_OCR_WRITE_PROT_VIOLATION)

+  {

+    return(SD_WRITE_PROT_VIOLATION);

+  }

+

+  if (response_r1 & SD_OCR_LOCK_UNLOCK_FAILED)

+  {

+    return(SD_LOCK_UNLOCK_FAILED);

+  }

+

+  if (response_r1 & SD_OCR_COM_CRC_FAILED)

+  {

+    return(SD_COM_CRC_FAILED);

+  }

+

+  if (response_r1 & SD_OCR_ILLEGAL_CMD)

+  {

+    return(SD_ILLEGAL_CMD);

+  }

+

+  if (response_r1 & SD_OCR_CARD_ECC_FAILED)

+  {

+    return(SD_CARD_ECC_FAILED);

+  }

+

+  if (response_r1 & SD_OCR_CC_ERROR)

+  {

+    return(SD_CC_ERROR);

+  }

+

+  if (response_r1 & SD_OCR_GENERAL_UNKNOWN_ERROR)

+  {

+    return(SD_GENERAL_UNKNOWN_ERROR);

+  }

+

+  if (response_r1 & SD_OCR_STREAM_READ_UNDERRUN)

+  {

+    return(SD_STREAM_READ_UNDERRUN);

+  }

+

+  if (response_r1 & SD_OCR_STREAM_WRITE_OVERRUN)

+  {

+    return(SD_STREAM_WRITE_OVERRUN);

+  }

+

+  if (response_r1 & SD_OCR_CID_CSD_OVERWRIETE)

+  {

+    return(SD_CID_CSD_OVERWRITE);

+  }

+

+  if (response_r1 & SD_OCR_WP_ERASE_SKIP)

+  {

+    return(SD_WP_ERASE_SKIP);

+  }

+

+  if (response_r1 & SD_OCR_CARD_ECC_DISABLED)

+  {

+    return(SD_CARD_ECC_DISABLED);

+  }

+

+  if (response_r1 & SD_OCR_ERASE_RESET)

+  {

+    return(SD_ERASE_RESET);

+  }

+

+  if (response_r1 & SD_OCR_AKE_SEQ_ERROR)

+  {

+    return(SD_AKE_SEQ_ERROR);

+  }

+  return(errorstatus);

+}

+

+/**

+  * @brief  Checks for error conditions for R3 (OCR).

+  *   response.

+  * @param  None

+  * @retval SD_Error: SD Card Error code.

+  */

+static SD_Error CmdResp3Error(void)

+{

+  SD_Error errorstatus = SD_OK;

+  uint32_t status;

+

+  status = SDIO->STA;

+

+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))

+  {

+    status = SDIO->STA;

+  }

+

+  if (status & SDIO_FLAG_CTIMEOUT)

+  {

+    errorstatus = SD_CMD_RSP_TIMEOUT;

+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);

+    return(errorstatus);

+  }

+  /* Clear all the static flags */

+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);

+  return(errorstatus);

+}

+

+/**

+  * @brief  Checks for error conditions for R2 (CID or CSD).

+  *   response.

+  * @param  None

+  * @retval SD_Error: SD Card Error code.

+  */

+static SD_Error CmdResp2Error(void)

+{

+  SD_Error errorstatus = SD_OK;

+  uint32_t status;

+

+  status = SDIO->STA;

+

+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))

+  {

+    status = SDIO->STA;

+  }

+

+  if (status & SDIO_FLAG_CTIMEOUT)

+  {

+    errorstatus = SD_CMD_RSP_TIMEOUT;

+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);

+    return(errorstatus);

+  }

+  else if (status & SDIO_FLAG_CCRCFAIL)

+  {

+    errorstatus = SD_CMD_CRC_FAIL;

+    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);

+    return(errorstatus);

+  }

+

+  /* Clear all the static flags */

+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Checks for error conditions for R6 (RCA).

+  *   response.

+  * @param  cmd: The sent command index.

+  * @param  prca: pointer to the variable that will contain the SD

+  *   card relative address RCA.

+  * @retval SD_Error: SD Card Error code.

+  */

+static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca)

+{

+  SD_Error errorstatus = SD_OK;

+  uint32_t status;

+  uint32_t response_r1;

+

+  status = SDIO->STA;

+

+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))

+  {

+    status = SDIO->STA;

+  }

+

+  if (status & SDIO_FLAG_CTIMEOUT)

+  {

+    errorstatus = SD_CMD_RSP_TIMEOUT;

+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);

+    return(errorstatus);

+  }

+  else if (status & SDIO_FLAG_CCRCFAIL)

+  {

+    errorstatus = SD_CMD_CRC_FAIL;

+    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);

+    return(errorstatus);

+  }

+

+  /* Check response received is of desired command */

+  if (SDIO_GetCommandResponse() != cmd)

+  {

+    errorstatus = SD_ILLEGAL_CMD;

+    return(errorstatus);

+  }

+

+  /* Clear all the static flags */

+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);

+

+  /* We have received response, retrieve it.  */

+  response_r1 = SDIO_GetResponse(SDIO_RESP1);

+

+  if (SD_ALLZERO == (response_r1 & (SD_R6_GENERAL_UNKNOWN_ERROR | SD_R6_ILLEGAL_CMD | SD_R6_COM_CRC_FAILED)))

+  {

+    *prca = (uint16_t) (response_r1 >> 16);

+    return(errorstatus);

+  }

+

+  if (response_r1 & SD_R6_GENERAL_UNKNOWN_ERROR)

+  {

+    return(SD_GENERAL_UNKNOWN_ERROR);

+  }

+

+  if (response_r1 & SD_R6_ILLEGAL_CMD)

+  {

+    return(SD_ILLEGAL_CMD);

+  }

+

+  if (response_r1 & SD_R6_COM_CRC_FAILED)

+  {

+    return(SD_COM_CRC_FAILED);

+  }

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Enables or disables the SDIO wide bus mode.

+  * @param  NewState: new state of the SDIO wide bus mode.

+  *   This parameter can be: ENABLE or DISABLE.

+  * @retval SD_Error: SD Card Error code.

+  */

+static SD_Error SDEnWideBus(FunctionalState NewState)

+{

+  SD_Error errorstatus = SD_OK;

+

+  uint32_t scr[2] = {0, 0};

+

+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)

+  {

+    errorstatus = SD_LOCK_UNLOCK_FAILED;

+    return(errorstatus);

+  }

+

+  /* Get SCR Register */

+  errorstatus = FindSCR(RCA, scr);

+

+  if (errorstatus != SD_OK)

+  {

+    return(errorstatus);

+  }

+

+  /* If wide bus operation to be enabled */

+  if (NewState == ENABLE)

+  {

+    /* If requested card supports wide bus operation */

+    if ((scr[1] & SD_WIDE_BUS_SUPPORT) != SD_ALLZERO)

+    {

+      /* Send CMD55 APP_CMD with argument as card's RCA.*/

+      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;

+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;

+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+      SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+      errorstatus = CmdResp1Error(SDIO_APP_CMD);

+

+      if (errorstatus != SD_OK)

+      {

+        return(errorstatus);

+      }

+

+      /* Send ACMD6 APP_CMD with argument as 2 for wide bus mode */

+      SDIO_CmdInitStructure.SDIO_Argument = 0x2;

+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_SD_SET_BUSWIDTH;

+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+      SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+      errorstatus = CmdResp1Error(SDIO_APP_SD_SET_BUSWIDTH);

+

+      if (errorstatus != SD_OK)

+      {

+        return(errorstatus);

+      }

+      return(errorstatus);

+    }

+    else

+    {

+      errorstatus = SD_REQUEST_NOT_APPLICABLE;

+      return(errorstatus);

+    }

+  }   /* If wide bus operation to be disabled */

+  else

+  {

+    /* If requested card supports 1 bit mode operation */

+    if ((scr[1] & SD_SINGLE_BUS_SUPPORT) != SD_ALLZERO)

+    {

+      /* Send CMD55 APP_CMD with argument as card's RCA.*/

+      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;

+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;

+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+      SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+

+      errorstatus = CmdResp1Error(SDIO_APP_CMD);

+

+      if (errorstatus != SD_OK)

+      {

+        return(errorstatus);

+      }

+

+      /* Send ACMD6 APP_CMD with argument as 2 for wide bus mode */

+      SDIO_CmdInitStructure.SDIO_Argument = 0x00;

+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_SD_SET_BUSWIDTH;

+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+      SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+      errorstatus = CmdResp1Error(SDIO_APP_SD_SET_BUSWIDTH);

+

+      if (errorstatus != SD_OK)

+      {

+        return(errorstatus);

+      }

+

+      return(errorstatus);

+    }

+    else

+    {

+      errorstatus = SD_REQUEST_NOT_APPLICABLE;

+      return(errorstatus);

+    }

+  }

+}

+

+/**

+  * @brief  Checks if the SD card is in programming state.

+  * @param  pstatus: pointer to the variable that will contain the SD

+  *   card state.

+  * @retval SD_Error: SD Card Error code.

+  */

+static SD_Error IsCardProgramming(uint8_t *pstatus)

+{

+  SD_Error errorstatus = SD_OK;

+  __IO uint32_t respR1 = 0, status = 0;

+

+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+  status = SDIO->STA;

+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))

+  {

+    status = SDIO->STA;

+  }

+

+  if (status & SDIO_FLAG_CTIMEOUT)

+  {

+    errorstatus = SD_CMD_RSP_TIMEOUT;

+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);

+    return(errorstatus);

+  }

+  else if (status & SDIO_FLAG_CCRCFAIL)

+  {

+    errorstatus = SD_CMD_CRC_FAIL;

+    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);

+    return(errorstatus);

+  }

+

+  status = (uint32_t)SDIO_GetCommandResponse();

+

+  /* Check response received is of desired command */

+  if (status != SDIO_SEND_STATUS)

+  {

+    errorstatus = SD_ILLEGAL_CMD;

+    return(errorstatus);

+  }

+

+  /* Clear all the static flags */

+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);

+

+

+  /* We have received response, retrieve it for analysis  */

+  respR1 = SDIO_GetResponse(SDIO_RESP1);

+

+  /* Find out card status */

+  *pstatus = (uint8_t) ((respR1 >> 9) & 0x0000000F);

+

+  if ((respR1 & SD_OCR_ERRORBITS) == SD_ALLZERO)

+  {

+    return(errorstatus);

+  }

+

+  if (respR1 & SD_OCR_ADDR_OUT_OF_RANGE)

+  {

+    return(SD_ADDR_OUT_OF_RANGE);

+  }

+

+  if (respR1 & SD_OCR_ADDR_MISALIGNED)

+  {

+    return(SD_ADDR_MISALIGNED);

+  }

+

+  if (respR1 & SD_OCR_BLOCK_LEN_ERR)

+  {

+    return(SD_BLOCK_LEN_ERR);

+  }

+

+  if (respR1 & SD_OCR_ERASE_SEQ_ERR)

+  {

+    return(SD_ERASE_SEQ_ERR);

+  }

+

+  if (respR1 & SD_OCR_BAD_ERASE_PARAM)

+  {

+    return(SD_BAD_ERASE_PARAM);

+  }

+

+  if (respR1 & SD_OCR_WRITE_PROT_VIOLATION)

+  {

+    return(SD_WRITE_PROT_VIOLATION);

+  }

+

+  if (respR1 & SD_OCR_LOCK_UNLOCK_FAILED)

+  {

+    return(SD_LOCK_UNLOCK_FAILED);

+  }

+

+  if (respR1 & SD_OCR_COM_CRC_FAILED)

+  {

+    return(SD_COM_CRC_FAILED);

+  }

+

+  if (respR1 & SD_OCR_ILLEGAL_CMD)

+  {

+    return(SD_ILLEGAL_CMD);

+  }

+

+  if (respR1 & SD_OCR_CARD_ECC_FAILED)

+  {

+    return(SD_CARD_ECC_FAILED);

+  }

+

+  if (respR1 & SD_OCR_CC_ERROR)

+  {

+    return(SD_CC_ERROR);

+  }

+

+  if (respR1 & SD_OCR_GENERAL_UNKNOWN_ERROR)

+  {

+    return(SD_GENERAL_UNKNOWN_ERROR);

+  }

+

+  if (respR1 & SD_OCR_STREAM_READ_UNDERRUN)

+  {

+    return(SD_STREAM_READ_UNDERRUN);

+  }

+

+  if (respR1 & SD_OCR_STREAM_WRITE_OVERRUN)

+  {

+    return(SD_STREAM_WRITE_OVERRUN);

+  }

+

+  if (respR1 & SD_OCR_CID_CSD_OVERWRIETE)

+  {

+    return(SD_CID_CSD_OVERWRITE);

+  }

+

+  if (respR1 & SD_OCR_WP_ERASE_SKIP)

+  {

+    return(SD_WP_ERASE_SKIP);

+  }

+

+  if (respR1 & SD_OCR_CARD_ECC_DISABLED)

+  {

+    return(SD_CARD_ECC_DISABLED);

+  }

+

+  if (respR1 & SD_OCR_ERASE_RESET)

+  {

+    return(SD_ERASE_RESET);

+  }

+

+  if (respR1 & SD_OCR_AKE_SEQ_ERROR)

+  {

+    return(SD_AKE_SEQ_ERROR);

+  }

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Find the SD card SCR register value.

+  * @param  rca: selected card address.

+  * @param  pscr: pointer to the buffer that will contain the SCR value.

+  * @retval SD_Error: SD Card Error code.

+  */

+static SD_Error FindSCR(uint16_t rca, uint32_t *pscr)

+{

+  uint32_t index = 0;

+  SD_Error errorstatus = SD_OK;

+  uint32_t tempscr[2] = {0, 0};

+

+  /* Set Block Size To 8 Bytes */

+  /* Send CMD55 APP_CMD with argument as card's RCA */

+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)8;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+  errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);

+

+  if (errorstatus != SD_OK)

+  {

+    return(errorstatus);

+  }

+

+  /* Send CMD55 APP_CMD with argument as card's RCA */

+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+  errorstatus = CmdResp1Error(SDIO_APP_CMD);

+

+  if (errorstatus != SD_OK)

+  {

+    return(errorstatus);

+  }

+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;

+  SDIO_DataInitStructure.SDIO_DataLength = 8;

+  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_8b;

+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;

+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;

+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;

+  SDIO_DataConfig(&SDIO_DataInitStructure);

+

+

+  /* Send ACMD51 SD_APP_SEND_SCR with argument as 0 */

+  SDIO_CmdInitStructure.SDIO_Argument = 0x0;

+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_APP_SEND_SCR;

+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;

+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;

+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;

+  SDIO_SendCommand(&SDIO_CmdInitStructure);

+

+  errorstatus = CmdResp1Error(SDIO_SD_APP_SEND_SCR);

+

+  if (errorstatus != SD_OK)

+  {

+    return(errorstatus);

+  }

+

+  while (!(SDIO->STA & (SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))

+  {

+    if (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)

+    {

+      *(tempscr + index) = SDIO_ReadData();

+      index++;

+    }

+  }

+

+  if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)

+  {

+    SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);

+    errorstatus = SD_DATA_TIMEOUT;

+    return(errorstatus);

+  }

+  else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)

+  {

+    SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);

+    errorstatus = SD_DATA_CRC_FAIL;

+    return(errorstatus);

+  }

+  else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)

+  {

+    SDIO_ClearFlag(SDIO_FLAG_RXOVERR);

+    errorstatus = SD_RX_OVERRUN;

+    return(errorstatus);

+  }

+  else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)

+  {

+    SDIO_ClearFlag(SDIO_FLAG_STBITERR);

+    errorstatus = SD_START_BIT_ERR;

+    return(errorstatus);

+  }

+

+  /* Clear all the static flags */

+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);

+

+  *(pscr + 1) = ((tempscr[0] & SD_0TO7BITS) << 24) | ((tempscr[0] & SD_8TO15BITS) << 8) | ((tempscr[0] & SD_16TO23BITS) >> 8) | ((tempscr[0] & SD_24TO31BITS) >> 24);

+

+  *(pscr) = ((tempscr[1] & SD_0TO7BITS) << 24) | ((tempscr[1] & SD_8TO15BITS) << 8) | ((tempscr[1] & SD_16TO23BITS) >> 8) | ((tempscr[1] & SD_24TO31BITS) >> 24);

+

+  return(errorstatus);

+}

+

+/**

+  * @brief  Converts the number of bytes in power of two and returns the

+  *   power.

+  * @param  NumberOfBytes: number of bytes.

+  * @retval None

+  */

+static uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes)

+{

+  uint8_t count = 0;

+

+  while (NumberOfBytes != 1)

+  {

+    NumberOfBytes >>= 1;

+    count++;

+  }

+  return(count);

+}

+

+/**

+  * @brief  Configures the SDIO Corresponding GPIO Ports

+  * @param  None

+  * @retval None

+  */

+static void GPIO_Configuration(void)

+{

+  GPIO_InitTypeDef  GPIO_InitStructure;

+

+  /* GPIOC and GPIOD Periph clock enable */

+  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE);

+

+  /* Configure PC.08, PC.09, PC.10, PC.11, PC.12 pin: D0, D1, D2, D3, CLK pin */

+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;

+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;

+  GPIO_Init(GPIOC, &GPIO_InitStructure);

+

+  /* Configure PD.02 CMD line */

+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;

+  GPIO_Init(GPIOD, &GPIO_InitStructure);

+}

+

+/**

+  * @brief  Configures the DMA2 Channel4 for SDIO Tx request.

+  * @param  BufferSRC: pointer to the source buffer

+  * @param  BufferSize: buffer size

+  * @retval None

+  */

+static void DMA_TxConfiguration(uint32_t *BufferSRC, uint32_t BufferSize)

+{

+  DMA_InitTypeDef DMA_InitStructure;

+

+  DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);

+

+  /* DMA2 Channel4 disable */

+  DMA_Cmd(DMA2_Channel4, DISABLE);

+

+  /* DMA2 Channel4 Config */

+  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_Address;

+  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)BufferSRC;

+  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;

+  DMA_InitStructure.DMA_BufferSize = BufferSize / 4;

+  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;

+  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;

+  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;

+  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;

+  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;

+  DMA_InitStructure.DMA_Priority = DMA_Priority_High;

+  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;

+  DMA_Init(DMA2_Channel4, &DMA_InitStructure);

+

+  /* DMA2 Channel4 enable */

+  DMA_Cmd(DMA2_Channel4, ENABLE);

+}

+

+/**

+  * @brief  Configures the DMA2 Channel4 for SDIO Rx request.

+  * @param  BufferDST: pointer to the destination buffer

+  * @param  BufferSize: buffer size

+  * @retval None

+  */

+static void DMA_RxConfiguration(uint32_t *BufferDST, uint32_t BufferSize)

+{

+  DMA_InitTypeDef DMA_InitStructure;

+

+  DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);

+

+  /* DMA2 Channel4 disable */

+  DMA_Cmd(DMA2_Channel4, DISABLE);

+

+  /* DMA2 Channel4 Config */

+  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_Address;

+  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)BufferDST;

+  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;

+  DMA_InitStructure.DMA_BufferSize = BufferSize / 4;

+  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;

+  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;

+  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;

+  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;

+  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;

+  DMA_InitStructure.DMA_Priority = DMA_Priority_High;

+  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;

+  DMA_Init(DMA2_Channel4, &DMA_InitStructure);

+

+  /* DMA2 Channel4 enable */

+  DMA_Cmd(DMA2_Channel4, ENABLE);

+}

+

+/**

+  * @}

+  */

+

+/**

+  * @}

+  */

+

+/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/

+

+/*

+ * RT-Thread SD Card Driver

+ * 20090417 Bernard

+ */

+#include <rtthread.h>

+#include <dfs_fs.h>

+

+/* set sector size to 512 */

+#define SECTOR_SIZE		512

+

+static struct rt_device sdcard_device;

+static SD_CardInfo SDCardInfo;

+static struct dfs_partition part;

+static struct rt_semaphore sd_lock;

+static rt_uint8_t _sdcard_buffer[SECTOR_SIZE];

+

+/* RT-Thread Device Driver Interface */

+static rt_err_t rt_sdcard_init(rt_device_t dev)

+{

+	NVIC_InitTypeDef NVIC_InitStructure;

+

+	NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;

+	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

+	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

+	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

+	NVIC_Init(&NVIC_InitStructure);

+

+	if (rt_sem_init(&sd_lock, "sdlock", 1, RT_IPC_FLAG_FIFO) != RT_EOK)

+	{

+		rt_kprintf("init sd lock semaphore failed\n");

 	}

-  }
-  return(errorstatus);
-}
-
-/**
-  * @brief  Allows to read blocks from a specified address  in a card.
-  * @param  addr: Address from where data are to be read.
-  * @param  readbuff: pointer to the buffer that will contain the
-  *   received data.
-  * @param  BlockSize: the SD card Data block size.
-  * @param  NumberOfBlocks: number of blocks to be read.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_ReadMultiBlocks(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize, uint32_t NumberOfBlocks)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t count = 0, *tempbuff = readbuff;
-  uint8_t power = 0;
-
-  if (NULL == readbuff)
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  TransferError = SD_OK;
-  TransferEnd = 0;
-  TotalNumberOfBytes = 0;
-
-  /* Clear all DPSM configuration */
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = 0;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-  SDIO_DMACmd(DISABLE);
-
-  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
-  {
-    errorstatus = SD_LOCK_UNLOCK_FAILED;
-    return(errorstatus);
-  }
-
-  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
-  {
-    BlockSize = 512;
-    addr /= 512;
-  }
-
-  if ((BlockSize > 0) && (BlockSize <= 2048) && (0 == (BlockSize & (BlockSize - 1))))
-  {
-    power = convert_from_bytes_to_power_of_two(BlockSize);
-
-    /* Set Block Size for Card */
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
-
-    if (SD_OK != errorstatus)
-    {
-      return(errorstatus);
-    }
-  }
-  else
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  if (NumberOfBlocks > 1)
-  {
-    /* Common to all modes */
-    if (NumberOfBlocks * BlockSize > SD_MAX_DATA_LENGTH)
-    {
-      errorstatus = SD_INVALID_PARAMETER;
-      return(errorstatus);
-    }
-
-    TotalNumberOfBytes = NumberOfBlocks * BlockSize;
-    StopCondition = 1;
-    DestBuffer = readbuff;
-
-    SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-    SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
-    SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
-    SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
-    SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-    SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
-    SDIO_DataConfig(&SDIO_DataInitStructure);
-
-    /* Send CMD18 READ_MULT_BLOCK with argument data address */
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)addr;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_READ_MULT_BLOCK;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_READ_MULT_BLOCK);
-
-    if (errorstatus != SD_OK)
-    {
-      return(errorstatus);
-    }
-
-    if (DeviceMode == SD_POLLING_MODE)
-    {
-      /* Polling mode */
-      while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DATAEND | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
-      {
-        if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
-        {
-          for (count = 0; count < SD_HALFFIFO; count++)
-          {
-            *(tempbuff + count) = SDIO_ReadData();
-          }
-          tempbuff += SD_HALFFIFO;
-        }
-      }
-
-      if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
-        errorstatus = SD_DATA_TIMEOUT;
-        return(errorstatus);
-      }
-      else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
-        errorstatus = SD_DATA_CRC_FAIL;
-        return(errorstatus);
-      }
-      else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
-        errorstatus = SD_RX_OVERRUN;
-        return(errorstatus);
-      }
-      else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_STBITERR);
-        errorstatus = SD_START_BIT_ERR;
-        return(errorstatus);
-      }
-      while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
-      {
-        *tempbuff = SDIO_ReadData();
-        tempbuff++;
-      }
-
-      if (SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)
-      {
-        /* In Case Of SD-CARD Send Command STOP_TRANSMISSION */
-        if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType))
-        {
-          /* Send CMD12 STOP_TRANSMISSION */
-          SDIO_CmdInitStructure.SDIO_Argument = 0x0;
-          SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_STOP_TRANSMISSION;
-          SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-          SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-          SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-          SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-          errorstatus = CmdResp1Error(SDIO_STOP_TRANSMISSION);
-
-          if (errorstatus != SD_OK)
-          {
-            return(errorstatus);
-          }
-        }
-      }
-      /* Clear all the static flags */
-      SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-    }
-    else if (DeviceMode == SD_INTERRUPT_MODE)
-    {
-      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_RXFIFOHF | SDIO_IT_STBITERR, ENABLE);
-      while ((TransferEnd == 0) && (TransferError == SD_OK))
-      {}
-      if (TransferError != SD_OK)
-      {
-        return(TransferError);
-      }
-    }
-    else if (DeviceMode == SD_DMA_MODE)
-    {
-      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
-      SDIO_DMACmd(ENABLE);
-      DMA_RxConfiguration(readbuff, (NumberOfBlocks * BlockSize));
-      while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
-      {}
-      while ((TransferEnd == 0) && (TransferError == SD_OK))
-      {}
-      if (TransferError != SD_OK)
-      {
-        return(TransferError);
-      }
-    }
-  }
-  return(errorstatus);
-}
-
-/**
-  * @brief  Allows to write one block starting from a specified address
-  *   in a card.
-  * @param  addr: Address from where data are to be read.
-  * @param  writebuff: pointer to the buffer that contain the data to be
-  *   transferred.
-  * @param  BlockSize: the SD card Data block size.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_WriteBlock(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize)
-{
-  SD_Error errorstatus = SD_OK;
-  uint8_t  power = 0, cardstate = 0;
-  uint32_t timeout = 0, bytestransferred = 0;
-  uint32_t cardstatus = 0, count = 0, restwords = 0;
-  uint32_t *tempbuff = writebuff;
-
-  if (writebuff == NULL)
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  TransferError = SD_OK;
-  TransferEnd = 0;
-  TotalNumberOfBytes = 0;
-
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = 0;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-  SDIO_DMACmd(DISABLE);
-
-  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
-  {
-    errorstatus = SD_LOCK_UNLOCK_FAILED;
-    return(errorstatus);
-  }
-
-  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
-  {
-    BlockSize = 512;
-    addr /= 512;
-  }
-
-  /* Set the block size, both on controller and card */
-  if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
-  {
-    power = convert_from_bytes_to_power_of_two(BlockSize);
-
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
-
-    if (errorstatus != SD_OK)
-    {
-      return(errorstatus);
-    }
-  }
-  else
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  /* Wait till card is ready for data Added */
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_SEND_STATUS);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  cardstatus = SDIO_GetResponse(SDIO_RESP1);
-
-  timeout = SD_DATATIMEOUT;
-
-  while (((cardstatus & 0x00000100) == 0) && (timeout > 0))
-  {
-    timeout--;
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_SEND_STATUS);
-
-    if (errorstatus != SD_OK)
-    {
-      return(errorstatus);
-    }
-    cardstatus = SDIO_GetResponse(SDIO_RESP1);
-  }
-
-  if (timeout == 0)
-  {
-    return(SD_ERROR);
-  }
-
-  /* Send CMD24 WRITE_SINGLE_BLOCK */
-  SDIO_CmdInitStructure.SDIO_Argument = addr;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_WRITE_SINGLE_BLOCK;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_WRITE_SINGLE_BLOCK);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  TotalNumberOfBytes = BlockSize;
-  StopCondition = 0;
-  SrcBuffer = writebuff;
-
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-
-  /* In case of single data block transfer no need of stop command at all */
-  if (DeviceMode == SD_POLLING_MODE)
-  {
-    while (!(SDIO->STA & (SDIO_FLAG_DBCKEND | SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
-    {
-      if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
-      {
-        if ((TotalNumberOfBytes - bytestransferred) < 32)
-        {
-          restwords = ((TotalNumberOfBytes - bytestransferred) % 4 == 0) ? ((TotalNumberOfBytes - bytestransferred) / 4) : (( TotalNumberOfBytes -  bytestransferred) / 4 + 1);
-
-          for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
-          {
-            SDIO_WriteData(*tempbuff);
-          }
-        }
-        else
-        {
-          for (count = 0; count < 8; count++)
-          {
-            SDIO_WriteData(*(tempbuff + count));
-          }
-          tempbuff += 8;
-          bytestransferred += 32;
-        }
-      }
-    }
-    if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
-      errorstatus = SD_DATA_TIMEOUT;
-      return(errorstatus);
-    }
-    else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
-      errorstatus = SD_DATA_CRC_FAIL;
-      return(errorstatus);
-    }
-    else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);
-      errorstatus = SD_TX_UNDERRUN;
-      return(errorstatus);
-    }
-    else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_STBITERR);
-      errorstatus = SD_START_BIT_ERR;
-      return(errorstatus);
-    }
-  }
-  else if (DeviceMode == SD_INTERRUPT_MODE)
-  {
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_FLAG_TXFIFOHE | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
-    while ((TransferEnd == 0) && (TransferError == SD_OK))
-    {}
-    if (TransferError != SD_OK)
-    {
-      return(TransferError);
-    }
-  }
-  else if (DeviceMode == SD_DMA_MODE)
-  {
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
-    DMA_TxConfiguration(writebuff, BlockSize);
-    SDIO_DMACmd(ENABLE);
-    while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
-    {}
-    while ((TransferEnd == 0) && (TransferError == SD_OK))
-    {}
-    if (TransferError != SD_OK)
-    {
-      return(TransferError);
-    }
-  }
-
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-  /* Wait till the card is in programming state */
-  errorstatus = IsCardProgramming(&cardstate);
-
-  while ((errorstatus == SD_OK) && ((cardstate == SD_CARD_PROGRAMMING) || (cardstate == SD_CARD_RECEIVING)))
-  {
-    errorstatus = IsCardProgramming(&cardstate);
-  }
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Allows to write blocks starting from a specified address in
-  *   a card.
-  * @param  addr: Address from where data are to be read.
-  * @param  writebuff: pointer to the buffer that contain the data to be
-  *   transferred.
-  * @param  BlockSize: the SD card Data block size.
-  * @param  NumberOfBlocks: number of blocks to be written.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_WriteMultiBlocks(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize, uint32_t NumberOfBlocks)
-{
-  SD_Error errorstatus = SD_OK;
-  uint8_t  power = 0, cardstate = 0;
-  uint32_t bytestransferred = 0;
-  uint32_t count = 0, restwords = 0;
-  uint32_t *tempbuff = writebuff;
-
-  if (writebuff == NULL)
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  TransferError = SD_OK;
-  TransferEnd = 0;
-  TotalNumberOfBytes = 0;
-
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = 0;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-  SDIO_DMACmd(DISABLE);
-
-  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
-  {
-    errorstatus = SD_LOCK_UNLOCK_FAILED;
-    return(errorstatus);
-  }
-
-  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
-  {
-    BlockSize = 512;
-    addr /= 512;
-  }
-
-  /* Set the block size, both on controller and card */
-  if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
-  {
-    power = convert_from_bytes_to_power_of_two(BlockSize);
-
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
-
-    if (errorstatus != SD_OK)
-    {
-      return(errorstatus);
-    }
-  }
-  else
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  /* Wait till card is ready for data Added */
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_SEND_STATUS);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  if (NumberOfBlocks > 1)
-  {
-    /* Common to all modes */
-    if (NumberOfBlocks * BlockSize > SD_MAX_DATA_LENGTH)
-    {
-      errorstatus = SD_INVALID_PARAMETER;
-      return(errorstatus);
-    }
-
-    if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
-    {
-      /* To improve performance */
-      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-
-      errorstatus = CmdResp1Error(SDIO_APP_CMD);
-
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-      /* To improve performance */
-      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)NumberOfBlocks;
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCK_COUNT;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-      errorstatus = CmdResp1Error(SDIO_SET_BLOCK_COUNT);
-
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-    }
-
-    /* Send CMD25 WRITE_MULT_BLOCK with argument data address */
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)addr;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_WRITE_MULT_BLOCK;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_WRITE_MULT_BLOCK);
-
-    if (SD_OK != errorstatus)
-    {
-      return(errorstatus);
-    }
-
-    TotalNumberOfBytes = NumberOfBlocks * BlockSize;
-    StopCondition = 1;
-    SrcBuffer = writebuff;
-
-    SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-    SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
-    SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
-    SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
-    SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-    SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
-    SDIO_DataConfig(&SDIO_DataInitStructure);
-
-    if (DeviceMode == SD_POLLING_MODE)
-    {
-      while (!(SDIO->STA & (SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DATAEND | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
-      {
-        if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
-        {
-          if (!((TotalNumberOfBytes - bytestransferred) < SD_HALFFIFOBYTES))
-          {
-            for (count = 0; count < SD_HALFFIFO; count++)
-            {
-              SDIO_WriteData(*(tempbuff + count));
-            }
-            tempbuff += SD_HALFFIFO;
-            bytestransferred += SD_HALFFIFOBYTES;
-          }
-          else
-          {
-            restwords = ((TotalNumberOfBytes - bytestransferred) % 4 == 0) ? ((TotalNumberOfBytes - bytestransferred) / 4) :
-                        ((TotalNumberOfBytes - bytestransferred) / 4 + 1);
-
-            for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
-            {
-              SDIO_WriteData(*tempbuff);
-            }
-          }
-        }
-      }
-
-      if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
-        errorstatus = SD_DATA_TIMEOUT;
-        return(errorstatus);
-      }
-      else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
-        errorstatus = SD_DATA_CRC_FAIL;
-        return(errorstatus);
-      }
-      else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);
-        errorstatus = SD_TX_UNDERRUN;
-        return(errorstatus);
-      }
-      else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_STBITERR);
-        errorstatus = SD_START_BIT_ERR;
-        return(errorstatus);
-      }
-
-      if (SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)
-      {
-       if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
-        {
-          /* Send CMD12 STOP_TRANSMISSION */
-          SDIO_CmdInitStructure.SDIO_Argument = 0x0;
-          SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_STOP_TRANSMISSION;
-          SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-          SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-          SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-          SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-
-          errorstatus = CmdResp1Error(SDIO_STOP_TRANSMISSION);
-
-          if (errorstatus != SD_OK)
-          {
-            return(errorstatus);
-          }
-        }
-      }
-    }
-    else if (DeviceMode == SD_INTERRUPT_MODE)
-    {
-      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXFIFOHE | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
-      while ((TransferEnd == 0) && (TransferError == SD_OK))
-      {}
-      if (TransferError != SD_OK)
-      {
-        return(TransferError);
-      }
-    }
-    else if (DeviceMode == SD_DMA_MODE)
-    {
-      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
-      SDIO_DMACmd(ENABLE);
-      DMA_TxConfiguration(writebuff, (NumberOfBlocks * BlockSize));
-      while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
-      {}
-      while ((TransferEnd == 0) && (TransferError == SD_OK))
-      {}
-      if (TransferError != SD_OK)
-      {
-        return(TransferError);
-      }
-    }
-  }
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-  /* Wait till the card is in programming state */
-  errorstatus = IsCardProgramming(&cardstate);
-
-  while ((errorstatus == SD_OK) && ((cardstate == SD_CARD_PROGRAMMING) || (cardstate == SD_CARD_RECEIVING)))
-  {
-    errorstatus = IsCardProgramming(&cardstate);
-  }
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Gets the cuurent data transfer state.
-  * @param  None
-  * @retval SDTransferState: Data Transfer state.
-  *   This value can be:
-  *             - SD_NO_TRANSFER: No data transfer is acting
-  *             - SD_TRANSFER_IN_PROGRESS: Data transfer is acting
-  */
-SDTransferState SD_GetTransferState(void)
-{
-  if (SDIO->STA & (SDIO_FLAG_TXACT | SDIO_FLAG_RXACT))
-  {
-    return(SD_TRANSFER_IN_PROGRESS);
-  }
-  else
-  {
-    return(SD_NO_TRANSFER);
-  }
-}
-
-/**
-  * @brief  Aborts an ongoing data transfer.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_StopTransfer(void)
-{
-  SD_Error errorstatus = SD_OK;
-
-  /* Send CMD12 STOP_TRANSMISSION  */
-  SDIO_CmdInitStructure.SDIO_Argument = 0x0;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_STOP_TRANSMISSION;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_STOP_TRANSMISSION);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Allows to erase memory area specified for the given card.
-  * @param  startaddr: the start address.
-  * @param  endaddr: the end address.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t delay = 0;
-  __IO uint32_t maxdelay = 0;
-  uint8_t cardstate = 0;
-
-  /* Check if the card coomnd class supports erase command */
-  if (((CSD_Tab[1] >> 20) & SD_CCCC_ERASE) == 0)
-  {
-    errorstatus = SD_REQUEST_NOT_APPLICABLE;
-    return(errorstatus);
-  }
-
-  maxdelay = 72000 / ((SDIO->CLKCR & 0xFF) + 2);
-
-  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
-  {
-    errorstatus = SD_LOCK_UNLOCK_FAILED;
-    return(errorstatus);
-  }
-
-  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
-  {
-    startaddr /= 512;
-    endaddr /= 512;
-  }
-
-  /* According to sd-card spec 1.0 ERASE_GROUP_START (CMD32) and erase_group_end(CMD33) */
-  if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
-  {
-    /* Send CMD32 SD_ERASE_GRP_START with argument as addr  */
-    SDIO_CmdInitStructure.SDIO_Argument = startaddr;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_ERASE_GRP_START;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_SD_ERASE_GRP_START);
-    if (errorstatus != SD_OK)
-    {
-      return(errorstatus);
-    }
-
-    /* Send CMD33 SD_ERASE_GRP_END with argument as addr  */
-    SDIO_CmdInitStructure.SDIO_Argument = endaddr;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_ERASE_GRP_END;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_SD_ERASE_GRP_END);
-    if (errorstatus != SD_OK)
-    {
-      return(errorstatus);
-    }
-  }
-
-  /* Send CMD38 ERASE */
-  SDIO_CmdInitStructure.SDIO_Argument = 0;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_ERASE;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_ERASE);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  for (delay = 0; delay < maxdelay; delay++)
-  {}
-
-  /* Wait till the card is in programming state */
-  errorstatus = IsCardProgramming(&cardstate);
-
-  while ((errorstatus == SD_OK) && ((SD_CARD_PROGRAMMING == cardstate) || (SD_CARD_RECEIVING == cardstate)))
-  {
-    errorstatus = IsCardProgramming(&cardstate);
-  }
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Returns the current card's status.
-  * @param  pcardstatus: pointer to the buffer that will contain the SD
-  *   card status (Card Status register).
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_SendStatus(uint32_t *pcardstatus)
-{
-  SD_Error errorstatus = SD_OK;
-
-  if (pcardstatus == NULL)
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-
-  errorstatus = CmdResp1Error(SDIO_SEND_STATUS);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  *pcardstatus = SDIO_GetResponse(SDIO_RESP1);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Returns the current SD card's status.
-  * @param  psdstatus: pointer to the buffer that will contain the SD
-  *   card status (SD Status register).
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_SendSDStatus(uint32_t *psdstatus)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t count = 0;
-
-  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
-  {
-    errorstatus = SD_LOCK_UNLOCK_FAILED;
-    return(errorstatus);
-  }
-
-  /* Set block size for card if it is not equal to current block size for card. */
-  SDIO_CmdInitStructure.SDIO_Argument = 64;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  /* CMD55 */
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-  errorstatus = CmdResp1Error(SDIO_APP_CMD);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = 64;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_64b;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-
-  /* Send ACMD13 SD_APP_STAUS  with argument as card's RCA.*/
-  SDIO_CmdInitStructure.SDIO_Argument = 0;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_APP_STAUS;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-  errorstatus = CmdResp1Error(SDIO_SD_APP_STAUS);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
-  {
-    if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
-    {
-      for (count = 0; count < 8; count++)
-      {
-        *(psdstatus + count) = SDIO_ReadData();
-      }
-      psdstatus += 8;
-    }
-  }
-
-  if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
-    errorstatus = SD_DATA_TIMEOUT;
-    return(errorstatus);
-  }
-  else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
-    errorstatus = SD_DATA_CRC_FAIL;
-    return(errorstatus);
-  }
-  else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
-    errorstatus = SD_RX_OVERRUN;
-    return(errorstatus);
-  }
-  else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_STBITERR);
-    errorstatus = SD_START_BIT_ERR;
-    return(errorstatus);
-  }
-
-  while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
-  {
-    *psdstatus = SDIO_ReadData();
-    psdstatus++;
-  }
-
-  /* Clear all the static status flags*/
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-  psdstatus -= 16;
-  for (count = 0; count < 16; count++)
-  {
-    psdstatus[count] = ((psdstatus[count] & SD_0TO7BITS) << 24) |((psdstatus[count] & SD_8TO15BITS) << 8) |
-                       ((psdstatus[count] & SD_16TO23BITS) >> 8) |((psdstatus[count] & SD_24TO31BITS) >> 24);
-  }
-  return(errorstatus);
-}
-
-/**
-  * @brief  Allows to process all the interrupts that are high.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_ProcessIRQSrc(void)
-{
-  uint32_t count = 0, restwords = 0;
-
-  if (DeviceMode == SD_INTERRUPT_MODE)
-  {
-    if (SDIO_GetITStatus(SDIO_IT_RXFIFOHF) != RESET)
-    {
-      for (count = 0; count < SD_HALFFIFO; count++)
-      {
-        *(DestBuffer + count) = SDIO_ReadData();
-      }
-      DestBuffer += SD_HALFFIFO;
-      NumberOfBytes += SD_HALFFIFOBYTES;
-    }
-    else if (SDIO_GetITStatus(SDIO_IT_TXFIFOHE) != RESET)
-    {
-      if ((TotalNumberOfBytes - NumberOfBytes) < SD_HALFFIFOBYTES)
-      {
-        restwords = ((TotalNumberOfBytes - NumberOfBytes) %  4 == 0) ?
-                    ((TotalNumberOfBytes - NumberOfBytes) / 4) :
-                    ((TotalNumberOfBytes - NumberOfBytes) / 4 + 1);
-
-        for (count = 0; count < restwords;  count++, SrcBuffer++, NumberOfBytes += 4)
-        {
-          SDIO_WriteData(*SrcBuffer);
-        }
-      }
-      else
-      {
-        for (count = 0; count < SD_HALFFIFO; count++)
-        {
-          SDIO_WriteData(*(SrcBuffer + count));
-        }
-
-        SrcBuffer += SD_HALFFIFO;
-        NumberOfBytes += SD_HALFFIFOBYTES;
-      }
-    }
-  }
-
-  if (SDIO_GetITStatus(SDIO_IT_DATAEND) != RESET)
-  {
-    if (DeviceMode != SD_DMA_MODE)
-    {
-      while ((SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)  &&  (NumberOfBytes < TotalNumberOfBytes))
-      {
-        *DestBuffer = SDIO_ReadData();
-        DestBuffer++;
-        NumberOfBytes += 4;
-      }
-    }
-
-    if (StopCondition == 1)
-    {
-      TransferError = SD_StopTransfer();
-    }
-    else
-    {
-      TransferError = SD_OK;
-    }
-    SDIO_ClearITPendingBit(SDIO_IT_DATAEND);
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
-                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
-                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
-    TransferEnd = 1;
-    NumberOfBytes = 0;
-    return(TransferError);
-  }
-
-  if (SDIO_GetITStatus(SDIO_IT_DCRCFAIL) != RESET)
-  {
-    SDIO_ClearITPendingBit(SDIO_IT_DCRCFAIL);
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
-                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
-                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
-    NumberOfBytes = 0;
-    TransferError = SD_DATA_CRC_FAIL;
-    return(SD_DATA_CRC_FAIL);
-  }
-
-  if (SDIO_GetITStatus(SDIO_IT_DTIMEOUT) != RESET)
-  {
-    SDIO_ClearITPendingBit(SDIO_IT_DTIMEOUT);
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
-                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
-                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
-    NumberOfBytes = 0;
-    TransferError = SD_DATA_TIMEOUT;
-    return(SD_DATA_TIMEOUT);
-  }
-
-  if (SDIO_GetITStatus(SDIO_IT_RXOVERR) != RESET)
-  {
-    SDIO_ClearITPendingBit(SDIO_IT_RXOVERR);
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
-                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
-                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
-    NumberOfBytes = 0;
-    TransferError = SD_RX_OVERRUN;
-    return(SD_RX_OVERRUN);
-  }
-
-  if (SDIO_GetITStatus(SDIO_IT_TXUNDERR) != RESET)
-  {
-    SDIO_ClearITPendingBit(SDIO_IT_TXUNDERR);
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
-                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
-                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
-    NumberOfBytes = 0;
-    TransferError = SD_TX_UNDERRUN;
-    return(SD_TX_UNDERRUN);
-  }
-
-  if (SDIO_GetITStatus(SDIO_IT_STBITERR) != RESET)
-  {
-    SDIO_ClearITPendingBit(SDIO_IT_STBITERR);
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
-                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
-                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
-    NumberOfBytes = 0;
-    TransferError = SD_START_BIT_ERR;
-    return(SD_START_BIT_ERR);
-  }
-
-  return(SD_OK);
-}
-
-/**
-  * @brief  Checks for error conditions for CMD0.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error CmdError(void)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t timeout;
-
-  timeout = SDIO_CMD0TIMEOUT; /* 10000 */
-
-  while ((timeout > 0) && (SDIO_GetFlagStatus(SDIO_FLAG_CMDSENT) == RESET))
-  {
-    timeout--;
-  }
-
-  if (timeout == 0)
-  {
-    errorstatus = SD_CMD_RSP_TIMEOUT;
-    return(errorstatus);
-  }
-
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Checks for error conditions for R7.
-  *   response.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error CmdResp7Error(void)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t status;
-  uint32_t timeout = SDIO_CMD0TIMEOUT;
-
-  status = SDIO->STA;
-
-  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)) && (timeout > 0))
-  {
-    timeout--;
-    status = SDIO->STA;
-  }
-
-  if ((timeout == 0) || (status & SDIO_FLAG_CTIMEOUT))
-  {
-    /* Card is not V2.0 complient or card does not support the set voltage range */
-    errorstatus = SD_CMD_RSP_TIMEOUT;
-    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
-    return(errorstatus);
-  }
-
-  if (status & SDIO_FLAG_CMDREND)
-  {
-    /* Card is SD V2.0 compliant */
-    errorstatus = SD_OK;
-    SDIO_ClearFlag(SDIO_FLAG_CMDREND);
-    return(errorstatus);
-  }
-  return(errorstatus);
-}
-
-/**
-  * @brief  Checks for error conditions for R1.
-  *   response
-  * @param  cmd: The sent command index.
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error CmdResp1Error(uint8_t cmd)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t status;
-  uint32_t response_r1;
-
-  status = SDIO->STA;
-
-  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
-  {
-    status = SDIO->STA;
-  }
-
-  if (status & SDIO_FLAG_CTIMEOUT)
-  {
-    errorstatus = SD_CMD_RSP_TIMEOUT;
-    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
-    return(errorstatus);
-  }
-  else if (status & SDIO_FLAG_CCRCFAIL)
-  {
-    errorstatus = SD_CMD_CRC_FAIL;
-    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
-    return(errorstatus);
-  }
-
-  /* Check response received is of desired command */
-  if (SDIO_GetCommandResponse() != cmd)
-  {
-    errorstatus = SD_ILLEGAL_CMD;
-    return(errorstatus);
-  }
-
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-  /* We have received response, retrieve it for analysis  */
-  response_r1 = SDIO_GetResponse(SDIO_RESP1);
-
-  if ((response_r1 & SD_OCR_ERRORBITS) == SD_ALLZERO)
-  {
-    return(errorstatus);
-  }
-
-  if (response_r1 & SD_OCR_ADDR_OUT_OF_RANGE)
-  {
-    return(SD_ADDR_OUT_OF_RANGE);
-  }
-
-  if (response_r1 & SD_OCR_ADDR_MISALIGNED)
-  {
-    return(SD_ADDR_MISALIGNED);
-  }
-
-  if (response_r1 & SD_OCR_BLOCK_LEN_ERR)
-  {
-    return(SD_BLOCK_LEN_ERR);
-  }
-
-  if (response_r1 & SD_OCR_ERASE_SEQ_ERR)
-  {
-    return(SD_ERASE_SEQ_ERR);
-  }
-
-  if (response_r1 & SD_OCR_BAD_ERASE_PARAM)
-  {
-    return(SD_BAD_ERASE_PARAM);
-  }
-
-  if (response_r1 & SD_OCR_WRITE_PROT_VIOLATION)
-  {
-    return(SD_WRITE_PROT_VIOLATION);
-  }
-
-  if (response_r1 & SD_OCR_LOCK_UNLOCK_FAILED)
-  {
-    return(SD_LOCK_UNLOCK_FAILED);
-  }
-
-  if (response_r1 & SD_OCR_COM_CRC_FAILED)
-  {
-    return(SD_COM_CRC_FAILED);
-  }
-
-  if (response_r1 & SD_OCR_ILLEGAL_CMD)
-  {
-    return(SD_ILLEGAL_CMD);
-  }
-
-  if (response_r1 & SD_OCR_CARD_ECC_FAILED)
-  {
-    return(SD_CARD_ECC_FAILED);
-  }
-
-  if (response_r1 & SD_OCR_CC_ERROR)
-  {
-    return(SD_CC_ERROR);
-  }
-
-  if (response_r1 & SD_OCR_GENERAL_UNKNOWN_ERROR)
-  {
-    return(SD_GENERAL_UNKNOWN_ERROR);
-  }
-
-  if (response_r1 & SD_OCR_STREAM_READ_UNDERRUN)
-  {
-    return(SD_STREAM_READ_UNDERRUN);
-  }
-
-  if (response_r1 & SD_OCR_STREAM_WRITE_OVERRUN)
-  {
-    return(SD_STREAM_WRITE_OVERRUN);
-  }
-
-  if (response_r1 & SD_OCR_CID_CSD_OVERWRIETE)
-  {
-    return(SD_CID_CSD_OVERWRITE);
-  }
-
-  if (response_r1 & SD_OCR_WP_ERASE_SKIP)
-  {
-    return(SD_WP_ERASE_SKIP);
-  }
-
-  if (response_r1 & SD_OCR_CARD_ECC_DISABLED)
-  {
-    return(SD_CARD_ECC_DISABLED);
-  }
-
-  if (response_r1 & SD_OCR_ERASE_RESET)
-  {
-    return(SD_ERASE_RESET);
-  }
-
-  if (response_r1 & SD_OCR_AKE_SEQ_ERROR)
-  {
-    return(SD_AKE_SEQ_ERROR);
-  }
-  return(errorstatus);
-}
-
-/**
-  * @brief  Checks for error conditions for R3 (OCR).
-  *   response.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error CmdResp3Error(void)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t status;
-
-  status = SDIO->STA;
-
-  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
-  {
-    status = SDIO->STA;
-  }
-
-  if (status & SDIO_FLAG_CTIMEOUT)
-  {
-    errorstatus = SD_CMD_RSP_TIMEOUT;
-    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
-    return(errorstatus);
-  }
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-  return(errorstatus);
-}
-
-/**
-  * @brief  Checks for error conditions for R2 (CID or CSD).
-  *   response.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error CmdResp2Error(void)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t status;
-
-  status = SDIO->STA;
-
-  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
-  {
-    status = SDIO->STA;
-  }
-
-  if (status & SDIO_FLAG_CTIMEOUT)
-  {
-    errorstatus = SD_CMD_RSP_TIMEOUT;
-    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
-    return(errorstatus);
-  }
-  else if (status & SDIO_FLAG_CCRCFAIL)
-  {
-    errorstatus = SD_CMD_CRC_FAIL;
-    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
-    return(errorstatus);
-  }
-
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Checks for error conditions for R6 (RCA).
-  *   response.
-  * @param  cmd: The sent command index.
-  * @param  prca: pointer to the variable that will contain the SD
-  *   card relative address RCA.
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t status;
-  uint32_t response_r1;
-
-  status = SDIO->STA;
-
-  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
-  {
-    status = SDIO->STA;
-  }
-
-  if (status & SDIO_FLAG_CTIMEOUT)
-  {
-    errorstatus = SD_CMD_RSP_TIMEOUT;
-    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
-    return(errorstatus);
-  }
-  else if (status & SDIO_FLAG_CCRCFAIL)
-  {
-    errorstatus = SD_CMD_CRC_FAIL;
-    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
-    return(errorstatus);
-  }
-
-  /* Check response received is of desired command */
-  if (SDIO_GetCommandResponse() != cmd)
-  {
-    errorstatus = SD_ILLEGAL_CMD;
-    return(errorstatus);
-  }
-
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-  /* We have received response, retrieve it.  */
-  response_r1 = SDIO_GetResponse(SDIO_RESP1);
-
-  if (SD_ALLZERO == (response_r1 & (SD_R6_GENERAL_UNKNOWN_ERROR | SD_R6_ILLEGAL_CMD | SD_R6_COM_CRC_FAILED)))
-  {
-    *prca = (uint16_t) (response_r1 >> 16);
-    return(errorstatus);
-  }
-
-  if (response_r1 & SD_R6_GENERAL_UNKNOWN_ERROR)
-  {
-    return(SD_GENERAL_UNKNOWN_ERROR);
-  }
-
-  if (response_r1 & SD_R6_ILLEGAL_CMD)
-  {
-    return(SD_ILLEGAL_CMD);
-  }
-
-  if (response_r1 & SD_R6_COM_CRC_FAILED)
-  {
-    return(SD_COM_CRC_FAILED);
-  }
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Enables or disables the SDIO wide bus mode.
-  * @param  NewState: new state of the SDIO wide bus mode.
-  *   This parameter can be: ENABLE or DISABLE.
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error SDEnWideBus(FunctionalState NewState)
-{
-  SD_Error errorstatus = SD_OK;
-
-  uint32_t scr[2] = {0, 0};
-
-  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
-  {
-    errorstatus = SD_LOCK_UNLOCK_FAILED;
-    return(errorstatus);
-  }
-
-  /* Get SCR Register */
-  errorstatus = FindSCR(RCA, scr);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  /* If wide bus operation to be enabled */
-  if (NewState == ENABLE)
-  {
-    /* If requested card supports wide bus operation */
-    if ((scr[1] & SD_WIDE_BUS_SUPPORT) != SD_ALLZERO)
-    {
-      /* Send CMD55 APP_CMD with argument as card's RCA.*/
-      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-      errorstatus = CmdResp1Error(SDIO_APP_CMD);
-
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-
-      /* Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
-      SDIO_CmdInitStructure.SDIO_Argument = 0x2;
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_SD_SET_BUSWIDTH;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-      errorstatus = CmdResp1Error(SDIO_APP_SD_SET_BUSWIDTH);
-
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-      return(errorstatus);
-    }
-    else
-    {
-      errorstatus = SD_REQUEST_NOT_APPLICABLE;
-      return(errorstatus);
-    }
-  }   /* If wide bus operation to be disabled */
-  else
-  {
-    /* If requested card supports 1 bit mode operation */
-    if ((scr[1] & SD_SINGLE_BUS_SUPPORT) != SD_ALLZERO)
-    {
-      /* Send CMD55 APP_CMD with argument as card's RCA.*/
-      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-
-      errorstatus = CmdResp1Error(SDIO_APP_CMD);
-
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-
-      /* Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
-      SDIO_CmdInitStructure.SDIO_Argument = 0x00;
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_SD_SET_BUSWIDTH;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-      errorstatus = CmdResp1Error(SDIO_APP_SD_SET_BUSWIDTH);
-
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-
-      return(errorstatus);
-    }
-    else
-    {
-      errorstatus = SD_REQUEST_NOT_APPLICABLE;
-      return(errorstatus);
-    }
-  }
-}
-
-/**
-  * @brief  Checks if the SD card is in programming state.
-  * @param  pstatus: pointer to the variable that will contain the SD
-  *   card state.
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error IsCardProgramming(uint8_t *pstatus)
-{
-  SD_Error errorstatus = SD_OK;
-  __IO uint32_t respR1 = 0, status = 0;
-
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  status = SDIO->STA;
-  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
-  {
-    status = SDIO->STA;
-  }
-
-  if (status & SDIO_FLAG_CTIMEOUT)
-  {
-    errorstatus = SD_CMD_RSP_TIMEOUT;
-    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
-    return(errorstatus);
-  }
-  else if (status & SDIO_FLAG_CCRCFAIL)
-  {
-    errorstatus = SD_CMD_CRC_FAIL;
-    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
-    return(errorstatus);
-  }
-
-  status = (uint32_t)SDIO_GetCommandResponse();
-
-  /* Check response received is of desired command */
-  if (status != SDIO_SEND_STATUS)
-  {
-    errorstatus = SD_ILLEGAL_CMD;
-    return(errorstatus);
-  }
-
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-
-  /* We have received response, retrieve it for analysis  */
-  respR1 = SDIO_GetResponse(SDIO_RESP1);
-
-  /* Find out card status */
-  *pstatus = (uint8_t) ((respR1 >> 9) & 0x0000000F);
-
-  if ((respR1 & SD_OCR_ERRORBITS) == SD_ALLZERO)
-  {
-    return(errorstatus);
-  }
-
-  if (respR1 & SD_OCR_ADDR_OUT_OF_RANGE)
-  {
-    return(SD_ADDR_OUT_OF_RANGE);
-  }
-
-  if (respR1 & SD_OCR_ADDR_MISALIGNED)
-  {
-    return(SD_ADDR_MISALIGNED);
-  }
-
-  if (respR1 & SD_OCR_BLOCK_LEN_ERR)
-  {
-    return(SD_BLOCK_LEN_ERR);
-  }
-
-  if (respR1 & SD_OCR_ERASE_SEQ_ERR)
-  {
-    return(SD_ERASE_SEQ_ERR);
-  }
-
-  if (respR1 & SD_OCR_BAD_ERASE_PARAM)
-  {
-    return(SD_BAD_ERASE_PARAM);
-  }
-
-  if (respR1 & SD_OCR_WRITE_PROT_VIOLATION)
-  {
-    return(SD_WRITE_PROT_VIOLATION);
-  }
-
-  if (respR1 & SD_OCR_LOCK_UNLOCK_FAILED)
-  {
-    return(SD_LOCK_UNLOCK_FAILED);
-  }
-
-  if (respR1 & SD_OCR_COM_CRC_FAILED)
-  {
-    return(SD_COM_CRC_FAILED);
-  }
-
-  if (respR1 & SD_OCR_ILLEGAL_CMD)
-  {
-    return(SD_ILLEGAL_CMD);
-  }
-
-  if (respR1 & SD_OCR_CARD_ECC_FAILED)
-  {
-    return(SD_CARD_ECC_FAILED);
-  }
-
-  if (respR1 & SD_OCR_CC_ERROR)
-  {
-    return(SD_CC_ERROR);
-  }
-
-  if (respR1 & SD_OCR_GENERAL_UNKNOWN_ERROR)
-  {
-    return(SD_GENERAL_UNKNOWN_ERROR);
-  }
-
-  if (respR1 & SD_OCR_STREAM_READ_UNDERRUN)
-  {
-    return(SD_STREAM_READ_UNDERRUN);
-  }
-
-  if (respR1 & SD_OCR_STREAM_WRITE_OVERRUN)
-  {
-    return(SD_STREAM_WRITE_OVERRUN);
-  }
-
-  if (respR1 & SD_OCR_CID_CSD_OVERWRIETE)
-  {
-    return(SD_CID_CSD_OVERWRITE);
-  }
-
-  if (respR1 & SD_OCR_WP_ERASE_SKIP)
-  {
-    return(SD_WP_ERASE_SKIP);
-  }
-
-  if (respR1 & SD_OCR_CARD_ECC_DISABLED)
-  {
-    return(SD_CARD_ECC_DISABLED);
-  }
-
-  if (respR1 & SD_OCR_ERASE_RESET)
-  {
-    return(SD_ERASE_RESET);
-  }
-
-  if (respR1 & SD_OCR_AKE_SEQ_ERROR)
-  {
-    return(SD_AKE_SEQ_ERROR);
-  }
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Find the SD card SCR register value.
-  * @param  rca: selected card address.
-  * @param  pscr: pointer to the buffer that will contain the SCR value.
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error FindSCR(uint16_t rca, uint32_t *pscr)
-{
-  uint32_t index = 0;
-  SD_Error errorstatus = SD_OK;
-  uint32_t tempscr[2] = {0, 0};
-
-  /* Set Block Size To 8 Bytes */
-  /* Send CMD55 APP_CMD with argument as card's RCA */
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)8;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  /* Send CMD55 APP_CMD with argument as card's RCA */
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_APP_CMD);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = 8;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_8b;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-
-
-  /* Send ACMD51 SD_APP_SEND_SCR with argument as 0 */
-  SDIO_CmdInitStructure.SDIO_Argument = 0x0;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_APP_SEND_SCR;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_SD_APP_SEND_SCR);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  while (!(SDIO->STA & (SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
-  {
-    if (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
-    {
-      *(tempscr + index) = SDIO_ReadData();
-      index++;
-    }
-  }
-
-  if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
-    errorstatus = SD_DATA_TIMEOUT;
-    return(errorstatus);
-  }
-  else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
-    errorstatus = SD_DATA_CRC_FAIL;
-    return(errorstatus);
-  }
-  else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
-    errorstatus = SD_RX_OVERRUN;
-    return(errorstatus);
-  }
-  else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_STBITERR);
-    errorstatus = SD_START_BIT_ERR;
-    return(errorstatus);
-  }
-
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-  *(pscr + 1) = ((tempscr[0] & SD_0TO7BITS) << 24) | ((tempscr[0] & SD_8TO15BITS) << 8) | ((tempscr[0] & SD_16TO23BITS) >> 8) | ((tempscr[0] & SD_24TO31BITS) >> 24);
-
-  *(pscr) = ((tempscr[1] & SD_0TO7BITS) << 24) | ((tempscr[1] & SD_8TO15BITS) << 8) | ((tempscr[1] & SD_16TO23BITS) >> 8) | ((tempscr[1] & SD_24TO31BITS) >> 24);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Converts the number of bytes in power of two and returns the
-  *   power.
-  * @param  NumberOfBytes: number of bytes.
-  * @retval None
-  */
-static uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes)
-{
-  uint8_t count = 0;
-
-  while (NumberOfBytes != 1)
-  {
-    NumberOfBytes >>= 1;
-    count++;
-  }
-  return(count);
-}
-
-/**
-  * @brief  Configures the SDIO Corresponding GPIO Ports
-  * @param  None
-  * @retval None
-  */
-static void GPIO_Configuration(void)
-{
-  GPIO_InitTypeDef  GPIO_InitStructure;
-
-  /* GPIOC and GPIOD Periph clock enable */
-  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE);
-
-  /* Configure PC.08, PC.09, PC.10, PC.11, PC.12 pin: D0, D1, D2, D3, CLK pin */
-  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;
-  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
-  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
-  GPIO_Init(GPIOC, &GPIO_InitStructure);
-
-  /* Configure PD.02 CMD line */
-  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
-  GPIO_Init(GPIOD, &GPIO_InitStructure);
-}
-
-/**
-  * @brief  Configures the DMA2 Channel4 for SDIO Tx request.
-  * @param  BufferSRC: pointer to the source buffer
-  * @param  BufferSize: buffer size
-  * @retval None
-  */
-static void DMA_TxConfiguration(uint32_t *BufferSRC, uint32_t BufferSize)
-{
-  DMA_InitTypeDef DMA_InitStructure;
-
-  DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);
-
-  /* DMA2 Channel4 disable */
-  DMA_Cmd(DMA2_Channel4, DISABLE);
-
-  /* DMA2 Channel4 Config */
-  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_Address;
-  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)BufferSRC;
-  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
-  DMA_InitStructure.DMA_BufferSize = BufferSize / 4;
-  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
-  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
-  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
-  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
-  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
-  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
-  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
-  DMA_Init(DMA2_Channel4, &DMA_InitStructure);
-
-  /* DMA2 Channel4 enable */
-  DMA_Cmd(DMA2_Channel4, ENABLE);
-}
-
-/**
-  * @brief  Configures the DMA2 Channel4 for SDIO Rx request.
-  * @param  BufferDST: pointer to the destination buffer
-  * @param  BufferSize: buffer size
-  * @retval None
-  */
-static void DMA_RxConfiguration(uint32_t *BufferDST, uint32_t BufferSize)
-{
-  DMA_InitTypeDef DMA_InitStructure;
-
-  DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);
-
-  /* DMA2 Channel4 disable */
-  DMA_Cmd(DMA2_Channel4, DISABLE);
-
-  /* DMA2 Channel4 Config */
-  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_Address;
-  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)BufferDST;
-  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
-  DMA_InitStructure.DMA_BufferSize = BufferSize / 4;
-  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
-  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
-  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
-  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
-  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
-  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
-  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
-  DMA_Init(DMA2_Channel4, &DMA_InitStructure);
 

-  /* DMA2 Channel4 enable */
-  DMA_Cmd(DMA2_Channel4, ENABLE);
-}
-
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
-
-/*
- * RT-Thread SD Card Driver
- * 20090417 Bernard
- */
-#include <rtthread.h>
-#include <dfs_fs.h>
-
-static struct rt_device sdcard_device;
-static SD_CardInfo SDCardInfo;
-static struct dfs_partition part;
-static struct rt_semaphore sd_lock;
-
-/* RT-Thread Device Driver Interface */
-static rt_err_t rt_sdcard_init(rt_device_t dev)
-{
-	NVIC_InitTypeDef NVIC_InitStructure;
-
-	NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;
-	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
-	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
-	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
-	NVIC_Init(&NVIC_InitStructure);
+	return RT_EOK;

+}

+

+static rt_err_t rt_sdcard_open(rt_device_t dev, rt_uint16_t oflag)

+{

+	return RT_EOK;

+}

+

+static rt_err_t rt_sdcard_close(rt_device_t dev)

+{

+	return RT_EOK;

+}

+

+static rt_size_t rt_sdcard_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)

+{

+	SD_Error status;

+	rt_uint32_t nr = size / SECTOR_SIZE, retry;

+

+	rt_sem_take(&sd_lock, RT_WAITING_FOREVER);

+

+    retry = 3;

+    while(retry)

+    {

+        /* read all sectors */

+        if (((rt_uint32_t)buffer % 4 != 0) ||

+            ((rt_uint32_t)buffer > 0x20080000))

+        {

+            rt_uint32_t index;

+

+            /* which is not alignment with 4 or chip SRAM */

+            for (index = 0; index < nr; index ++)

+            {

+                status = SD_ReadBlock((part.offset + index) * SECTOR_SIZE + pos,

+                    (uint32_t*)_sdcard_buffer, SECTOR_SIZE);

+

+                if (status != SD_OK) break;

+

+                /* copy to the buffer */

+                rt_memcpy(((rt_uint8_t*)buffer + index * SECTOR_SIZE), _sdcard_buffer, SECTOR_SIZE);

+            }

+        }

+        else

+        {

+            if (nr == 1)

+            {

+                status = SD_ReadBlock(part.offset * SECTOR_SIZE + pos,

+                    (uint32_t*)buffer, SECTOR_SIZE);

+            }

+            else

+            {

+                status = SD_ReadMultiBlocks(part.offset * SECTOR_SIZE + pos,

+                    (uint32_t*)buffer, SECTOR_SIZE, nr);

+            }

+        }

+

+        if (status == SD_OK) break;

+

+        retry --;

+    }

+	rt_sem_release(&sd_lock);

+

+	if (status == SD_OK) return size;

+

+	rt_kprintf("read failed: %d, buffer 0x%08x\n", status, buffer);

+	return 0;

+}

+

+static rt_size_t rt_sdcard_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)

+{

+	SD_Error status;

+	rt_uint32_t nr = size / SECTOR_SIZE;

+

+	rt_sem_take(&sd_lock, RT_WAITING_FOREVER);

 

-	if (rt_sem_init(&sd_lock, "sdlock", 1, RT_IPC_FLAG_FIFO) != RT_EOK)
-	{
-		rt_kprintf("init sd lock semaphore failed\n");
-	}
-
-	return RT_EOK;
-}
-
-static rt_err_t rt_sdcard_open(rt_device_t dev, rt_uint16_t oflag)
-{
-
-	return RT_EOK;
-}
-
-static rt_err_t rt_sdcard_close(rt_device_t dev)
-{
-	return RT_EOK;
-}
-
-/* set sector size to 512 */
-#define SECTOR_SIZE		512
-static rt_size_t rt_sdcard_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
-{
-	SD_Error status;
-	rt_uint32_t i, retry;
-
-	// rt_kprintf("read: 0x%x, size %d\n", pos, size);
-
-	rt_sem_take(&sd_lock, RT_WAITING_FOREVER);
-	retry = 3;
 	/* read all sectors */

-	for (i = 0; i < size / SECTOR_SIZE; i ++)
-	{
-__retry:
-		status = SD_ReadBlock((part.offset + i)* SECTOR_SIZE + pos,
-			(uint32_t*)((rt_uint8_t*)buffer + i * SECTOR_SIZE),
-			SECTOR_SIZE);
-		if (status != SD_OK)
+	if (((rt_uint32_t)buffer % 4 != 0) ||

+        ((rt_uint32_t)buffer > 0x20080000))

+	{

+	    rt_uint32_t index;

+

+        /* which is not alignment with 4 or chip SRAM */

+        for (index = 0; index < nr; index ++)

+        {

+            /* copy to the buffer */

+            rt_memcpy(_sdcard_buffer, ((rt_uint8_t*)buffer + index * SECTOR_SIZE), SECTOR_SIZE);

+

+            status = SD_WriteBlock((part.offset + index) * SECTOR_SIZE + pos,

+                (uint32_t*)_sdcard_buffer, SECTOR_SIZE);

+

+            if (status != SD_OK) break;

+        }

+	}

+	else

+	{

+        if (nr == 1)

+        {

+            status = SD_WriteBlock(part.offset * SECTOR_SIZE + pos,

+                (uint32_t*)buffer, SECTOR_SIZE);

+        }

+        else

+        {

+            status = SD_WriteMultiBlocks(part.offset * SECTOR_SIZE + pos,

+                (uint32_t*)buffer, SECTOR_SIZE, nr);

+        }

+	}

+

+	rt_sem_release(&sd_lock);

+

+	if (status == SD_OK) return size;

+

+	rt_kprintf("write failed: %d, buffer 0x%08x\n", status, buffer);

+	return 0;

+}

+

+static rt_err_t rt_sdcard_control(rt_device_t dev, rt_uint8_t cmd, void *args)

+{

+	return RT_EOK;

+}

+

+void rt_hw_sdcard_init()

+{

+    if (SD_Init() == SD_OK)

+	{

+		SD_Error status;

+		rt_uint8_t *sector;

+

+		status = SD_GetCardInfo(&SDCardInfo);

+		if (status != SD_OK) goto __return;

+

+		status = SD_SelectDeselect((u32) (SDCardInfo.RCA << 16));

+		if (status != SD_OK) goto __return;

+

+		SD_EnableWideBusOperation(SDIO_BusWide_1b);

+		SD_SetDeviceMode(SD_DMA_MODE);

+

+		/* get the first sector to read partition table */

+		sector = (rt_uint8_t*) rt_malloc (512);

+		if (sector == RT_NULL)

+		{

+			rt_kprintf("allocate partition sector buffer failed\n");

+			return;

+		}

+		status = SD_ReadBlock(0, (uint32_t*)sector, 512);

+		if (status == SD_OK)

+		{

+			/* get the first partition */

+			if (dfs_filesystem_get_partition(&part, sector, 0) != 0)

+            {

+                /* there is no partition */

+                part.offset = 0;

+                part.size   = 0;

+            }

+		}

+		else

 		{

-			-- retry;
-			if (retry != 0) goto __retry;
-			else break;
-		}
-	}
-
-	rt_sem_release(&sd_lock);
-
-	if (status == SD_OK) return size;
-
-	rt_kprintf("read failed: %d, buffer 0x%08x\n", status, buffer);
-	return 0;
-}
-
-static rt_size_t rt_sdcard_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
-{
-	SD_Error status;
-	rt_uint32_t i;
-
-	// rt_kprintf("write: 0x%x, size %d\n", pos, size);
-
-	rt_sem_take(&sd_lock, RT_WAITING_FOREVER);
-
-	/* write all sectors */
-	for (i = 0; i < size / SECTOR_SIZE; i ++)
-	{
-		status = SD_WriteBlock((part.offset + i)* SECTOR_SIZE + pos,
-			(uint32_t*)((rt_uint8_t*)buffer + i * SECTOR_SIZE),
-			SECTOR_SIZE);
-		if (status != SD_OK)
-		{
-			rt_kprintf("sd card write failed\n");
-			break;
-		}
-	}
-
-	rt_sem_release(&sd_lock);
-	if (status == SD_OK) return size;
-
-	rt_kprintf("write failed: %d, buffer 0x%08x\n", status, buffer);
-	return 0;
-}
-
-static rt_err_t rt_sdcard_control(rt_device_t dev, rt_uint8_t cmd, void *args)
-{
-	return RT_EOK;
-}
-
-void rt_hw_sdcard_init()
-{
-    if ( SD_Init() == SD_OK )
-	{
-		SD_Error status;
-		rt_uint8_t *sector;
-
-		SD_EnableWideBusOperation(SDIO_BusWide_1b);
-
-		status = SD_GetCardInfo(&SDCardInfo);
-		if (status != SD_OK) goto __return;
-
-		status = SD_SelectDeselect((u32) (SDCardInfo.RCA << 16));
-		if (status != SD_OK) goto __return;
-
-		SD_SetDeviceMode(SD_DMA_MODE);
-
-		/* get the first sector to read partition table */
-		sector = (rt_uint8_t*) rt_malloc (512);
-		if (sector == RT_NULL)
-		{
-			rt_kprintf("allocate partition sector buffer failed\n");
-			return;
-		}
-		status = SD_ReadBlock(0, (uint32_t*)sector, 512);
-		if (status == SD_OK)
-		{
-			/* get the first partition */
-			if (dfs_filesystem_get_partition(&part, sector, 0) != 0)
-            {
-                /* there is no partition */
-                part.offset = 0;
-                part.size   = 0;
-            }
-		}
-		else
-		{
-			/* there is no partition table */
-			part.offset = 0;
-			part.size   = 0;
-		}
-
-		/* release sector buffer */
-		rt_free(sector);
-
-		/* register sdcard device */
-		sdcard_device.init 	= rt_sdcard_init;
-		sdcard_device.open 	= rt_sdcard_open;
-		sdcard_device.close = rt_sdcard_close;
-		sdcard_device.read 	= rt_sdcard_read;
-		sdcard_device.write = rt_sdcard_write;
-		sdcard_device.control = rt_sdcard_control;
-
-		/* no private */
-		sdcard_device.private = RT_NULL;
-
-		rt_device_register(&sdcard_device, "sd0",
-			RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
-
-		return;
-	}
-
-__return:
-	rt_kprintf("sdcard init failed\n");
-}
+			/* there is no partition table */

+			part.offset = 0;

+			part.size   = 0;

+		}

+

+		/* release sector buffer */

+		rt_free(sector);

+

+		/* register sdcard device */

+		sdcard_device.init 	= rt_sdcard_init;

+		sdcard_device.open 	= rt_sdcard_open;

+		sdcard_device.close = rt_sdcard_close;

+		sdcard_device.read 	= rt_sdcard_read;

+		sdcard_device.write = rt_sdcard_write;

+		sdcard_device.control = rt_sdcard_control;

+

+		/* no private */

+		sdcard_device.private = &SDCardInfo;

+

+		rt_device_register(&sdcard_device, "sd0",

+			RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);

+

+		return;

+	}

+

+__return:

+	rt_kprintf("sdcard init failed\n");

+}

diff --git a/bsp/stm3210/sdcard.h b/bsp/stm3210/sdcard.h
index 386c12d965..fd89d94afb 100644
--- a/bsp/stm3210/sdcard.h
+++ b/bsp/stm3210/sdcard.h
@@ -1,285 +1,285 @@
-/**
-  ******************************************************************************
-  * @file    SDIO/sdcard.h 
-  * @author  MCD Application Team
-  * @version V3.1.0
-  * @date    06/19/2009
-  * @brief   This file contains all the functions prototypes for the SD Card 
-  *          driver firmware library.
-  ******************************************************************************
-  * @copy
-  *
-  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
-  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
-  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
-  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
-  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
-  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
-  *
-  * <h2><center>&copy; COPYRIGHT 2009 STMicroelectronics</center></h2>
-  */ 
-
-/** @addtogroup STM32F10x_StdPeriph_Examples
-  * @{
-  */
-
-/** @addtogroup SDIO_Example
-  * @{
-  */ 
-
-/* Define to prevent recursive inclusion -------------------------------------*/
-#ifndef __SDCARD_H
-#define __SDCARD_H
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32f10x.h"
-
-/* Exported types ------------------------------------------------------------*/
-typedef enum
-{
-  /* SDIO specific error defines */
-  SD_CMD_CRC_FAIL                    = (1), /* Command response received (but CRC check failed) */
-  SD_DATA_CRC_FAIL                   = (2), /* Data bock sent/received (CRC check Failed) */
-  SD_CMD_RSP_TIMEOUT                 = (3), /* Command response timeout */
-  SD_DATA_TIMEOUT                    = (4), /* Data time out */
-  SD_TX_UNDERRUN                     = (5), /* Transmit FIFO under-run */
-  SD_RX_OVERRUN                      = (6), /* Receive FIFO over-run */
-  SD_START_BIT_ERR                   = (7), /* Start bit not detected on all data signals in widE bus mode */
-  SD_CMD_OUT_OF_RANGE                = (8), /* CMD's argument was out of range.*/
-  SD_ADDR_MISALIGNED                 = (9), /* Misaligned address */
-  SD_BLOCK_LEN_ERR                   = (10), /* Transferred block length is not allowed for the card or the number of transferred bytes does not match the block length */
-  SD_ERASE_SEQ_ERR                   = (11), /* An error in the sequence of erase command occurs.*/
-  SD_BAD_ERASE_PARAM                 = (12), /* An Invalid selection for erase groups */
-  SD_WRITE_PROT_VIOLATION            = (13), /* Attempt to program a write protect block */
-  SD_LOCK_UNLOCK_FAILED              = (14), /* Sequence or password error has been detected in unlock command or if there was an attempt to access a locked card */
-  SD_COM_CRC_FAILED                  = (15), /* CRC check of the previous command failed */
-  SD_ILLEGAL_CMD                     = (16), /* Command is not legal for the card state */
-  SD_CARD_ECC_FAILED                 = (17), /* Card internal ECC was applied but failed to correct the data */
-  SD_CC_ERROR                        = (18), /* Internal card controller error */
-  SD_GENERAL_UNKNOWN_ERROR           = (19), /* General or Unknown error */
-  SD_STREAM_READ_UNDERRUN            = (20), /* The card could not sustain data transfer in stream read operation. */
-  SD_STREAM_WRITE_OVERRUN            = (21), /* The card could not sustain data programming in stream mode */
-  SD_CID_CSD_OVERWRITE               = (22), /* CID/CSD overwrite error */
-  SD_WP_ERASE_SKIP                   = (23), /* only partial address space was erased */
-  SD_CARD_ECC_DISABLED               = (24), /* Command has been executed without using internal ECC */
-  SD_ERASE_RESET                     = (25), /* Erase sequence was cleared before executing because an out of erase sequence command was received */
-  SD_AKE_SEQ_ERROR                   = (26), /* Error in sequence of authentication. */
-  SD_INVALID_VOLTRANGE               = (27),
-  SD_ADDR_OUT_OF_RANGE               = (28),
-  SD_SWITCH_ERROR                    = (29),
-  SD_SDIO_DISABLED                   = (30),
-  SD_SDIO_FUNCTION_BUSY              = (31),
-  SD_SDIO_FUNCTION_FAILED            = (32),
-  SD_SDIO_UNKNOWN_FUNCTION           = (33),
-
-  /* Standard error defines */
-  SD_INTERNAL_ERROR, 
-  SD_NOT_CONFIGURED,
-  SD_REQUEST_PENDING, 
-  SD_REQUEST_NOT_APPLICABLE, 
-  SD_INVALID_PARAMETER,  
-  SD_UNSUPPORTED_FEATURE,  
-  SD_UNSUPPORTED_HW,  
-  SD_ERROR,  
-  SD_OK,  
-} SD_Error;
-
-/* SDIO Commands  Index */
-#define SDIO_GO_IDLE_STATE                       ((uint8_t)0)
-#define SDIO_SEND_OP_COND                        ((uint8_t)1)
-#define SDIO_ALL_SEND_CID                        ((uint8_t)2)
-#define SDIO_SET_REL_ADDR                        ((uint8_t)3) /* SDIO_SEND_REL_ADDR for SD Card */
-#define SDIO_SET_DSR                             ((uint8_t)4)
-#define SDIO_SDIO_SEN_OP_COND                    ((uint8_t)5)
-#define SDIO_HS_SWITCH                           ((uint8_t)6)
-#define SDIO_SEL_DESEL_CARD                      ((uint8_t)7)
-#define SDIO_HS_SEND_EXT_CSD                     ((uint8_t)8)
-#define SDIO_SEND_CSD                            ((uint8_t)9)
-#define SDIO_SEND_CID                            ((uint8_t)10)
-#define SDIO_READ_DAT_UNTIL_STOP                 ((uint8_t)11) /* SD Card doesn't support it */
-#define SDIO_STOP_TRANSMISSION                   ((uint8_t)12)
-#define SDIO_SEND_STATUS                         ((uint8_t)13)
-#define SDIO_HS_BUSTEST_READ                     ((uint8_t)14)
-#define SDIO_GO_INACTIVE_STATE                   ((uint8_t)15)
-#define SDIO_SET_BLOCKLEN                        ((uint8_t)16)
-#define SDIO_READ_SINGLE_BLOCK                   ((uint8_t)17)
-#define SDIO_READ_MULT_BLOCK                     ((uint8_t)18)
-#define SDIO_HS_BUSTEST_WRITE                    ((uint8_t)19)
-#define SDIO_WRITE_DAT_UNTIL_STOP                ((uint8_t)20) /* SD Card doesn't support it */
-#define SDIO_SET_BLOCK_COUNT                     ((uint8_t)23) /* SD Card doesn't support it */
-#define SDIO_WRITE_SINGLE_BLOCK                  ((uint8_t)24)
-#define SDIO_WRITE_MULT_BLOCK                    ((uint8_t)25)
-#define SDIO_PROG_CID                            ((uint8_t)26) /* reserved for manufacturers */
-#define SDIO_PROG_CSD                            ((uint8_t)27)
-#define SDIO_SET_WRITE_PROT                      ((uint8_t)28)
-#define SDIO_CLR_WRITE_PROT                      ((uint8_t)29)
-#define SDIO_SEND_WRITE_PROT                     ((uint8_t)30)
-#define SDIO_SD_ERASE_GRP_START                  ((uint8_t)32) /* To set the address of the first write
-                                                                  block to be erased. (For SD card only) */
-#define SDIO_SD_ERASE_GRP_END                    ((uint8_t)33) /* To set the address of the last write block of the
-                                                                  continuous range to be erased. (For SD card only) */
-#define SDIO_ERASE_GRP_START                     ((uint8_t)35) /* To set the address of the first write block to be erased.
-                                                                  (For MMC card only spec 3.31) */
-
-#define SDIO_ERASE_GRP_END                       ((uint8_t)36) /* To set the address of the last write block of the
-                                                                  continuous range to be erased. (For MMC card only spec 3.31) */
-
-#define SDIO_ERASE                               ((uint8_t)38)
-#define SDIO_FAST_IO                             ((uint8_t)39) /* SD Card doesn't support it */
-#define SDIO_GO_IRQ_STATE                        ((uint8_t)40) /* SD Card doesn't support it */
-#define SDIO_LOCK_UNLOCK                         ((uint8_t)42)
-#define SDIO_APP_CMD                             ((uint8_t)55)
-#define SDIO_GEN_CMD                             ((uint8_t)56)
-#define SDIO_NO_CMD                              ((uint8_t)64)
-
-/* Following commands are SD Card Specific commands.
-   SDIO_APP_CMD should be sent before sending these
-   commands. */
-#define SDIO_APP_SD_SET_BUSWIDTH                 ((uint8_t)6)  /* For SD Card only */
-#define SDIO_SD_APP_STAUS                        ((uint8_t)13) /* For SD Card only */
-#define SDIO_SD_APP_SEND_NUM_WRITE_BLOCKS        ((uint8_t)22) /* For SD Card only */
-#define SDIO_SD_APP_OP_COND                      ((uint8_t)41) /* For SD Card only */
-#define SDIO_SD_APP_SET_CLR_CARD_DETECT          ((uint8_t)42) /* For SD Card only */
-#define SDIO_SD_APP_SEND_SCR                     ((uint8_t)51) /* For SD Card only */
-#define SDIO_SDIO_RW_DIRECT                      ((uint8_t)52) /* For SD I/O Card only */
-#define SDIO_SDIO_RW_EXTENDED                    ((uint8_t)53) /* For SD I/O Card only */
-
-/* Following commands are SD Card Specific security commands.
-   SDIO_APP_CMD should be sent before sending these commands. */
-#define SDIO_SD_APP_GET_MKB                      ((uint8_t)43) /* For SD Card only */
-#define SDIO_SD_APP_GET_MID                      ((uint8_t)44) /* For SD Card only */
-#define SDIO_SD_APP_SET_CER_RN1                  ((uint8_t)45) /* For SD Card only */
-#define SDIO_SD_APP_GET_CER_RN2                  ((uint8_t)46) /* For SD Card only */
-#define SDIO_SD_APP_SET_CER_RES2                 ((uint8_t)47) /* For SD Card only */
-#define SDIO_SD_APP_GET_CER_RES1                 ((uint8_t)48) /* For SD Card only */
-#define SDIO_SD_APP_SECURE_READ_MULTIPLE_BLOCK   ((uint8_t)18) /* For SD Card only */
-#define SDIO_SD_APP_SECURE_WRITE_MULTIPLE_BLOCK  ((uint8_t)25) /* For SD Card only */
-#define SDIO_SD_APP_SECURE_ERASE                 ((uint8_t)38) /* For SD Card only */
-#define SDIO_SD_APP_CHANGE_SECURE_AREA           ((uint8_t)49) /* For SD Card only */
-#define SDIO_SD_APP_SECURE_WRITE_MKB             ((uint8_t)48) /* For SD Card only */
-
-typedef enum
-{
-  SD_NO_TRANSFER  = 0,
-  SD_TRANSFER_IN_PROGRESS
-} SDTransferState;
-
-typedef struct
-{
-  uint16_t TransferredBytes;
-  SD_Error TransferError;
-  uint8_t  padding;
-} SDLastTransferInfo;
-
-typedef struct       /* Card Specific Data */
-{
-  __IO uint8_t  CSDStruct;            /* CSD structure */
-  __IO uint8_t  SysSpecVersion;       /* System specification version */
-  __IO uint8_t  Reserved1;            /* Reserved */
-  __IO uint8_t  TAAC;                 /* Data read access-time 1 */
-  __IO uint8_t  NSAC;                 /* Data read access-time 2 in CLK cycles */
-  __IO uint8_t  MaxBusClkFrec;        /* Max. bus clock frequency */
-  __IO uint16_t CardComdClasses;      /* Card command classes */
-  __IO uint8_t  RdBlockLen;           /* Max. read data block length */
-  __IO uint8_t  PartBlockRead;        /* Partial blocks for read allowed */
-  __IO uint8_t  WrBlockMisalign;      /* Write block misalignment */
-  __IO uint8_t  RdBlockMisalign;      /* Read block misalignment */
-  __IO uint8_t  DSRImpl;              /* DSR implemented */
-  __IO uint8_t  Reserved2;            /* Reserved */
-  __IO uint32_t DeviceSize;           /* Device Size */
-  __IO uint8_t  MaxRdCurrentVDDMin;   /* Max. read current @ VDD min */
-  __IO uint8_t  MaxRdCurrentVDDMax;   /* Max. read current @ VDD max */
-  __IO uint8_t  MaxWrCurrentVDDMin;   /* Max. write current @ VDD min */
-  __IO uint8_t  MaxWrCurrentVDDMax;   /* Max. write current @ VDD max */
-  __IO uint8_t  DeviceSizeMul;        /* Device size multiplier */
-  __IO uint8_t  EraseGrSize;          /* Erase group size */
-  __IO uint8_t  EraseGrMul;           /* Erase group size multiplier */
-  __IO uint8_t  WrProtectGrSize;      /* Write protect group size */
-  __IO uint8_t  WrProtectGrEnable;    /* Write protect group enable */
-  __IO uint8_t  ManDeflECC;           /* Manufacturer default ECC */
-  __IO uint8_t  WrSpeedFact;          /* Write speed factor */
-  __IO uint8_t  MaxWrBlockLen;        /* Max. write data block length */
-  __IO uint8_t  WriteBlockPaPartial;  /* Partial blocks for write allowed */
-  __IO uint8_t  Reserved3;            /* Reserded */
-  __IO uint8_t  ContentProtectAppli;  /* Content protection application */
-  __IO uint8_t  FileFormatGrouop;     /* File format group */
-  __IO uint8_t  CopyFlag;             /* Copy flag (OTP) */
-  __IO uint8_t  PermWrProtect;        /* Permanent write protection */
-  __IO uint8_t  TempWrProtect;        /* Temporary write protection */
-  __IO uint8_t  FileFormat;           /* File Format */
-  __IO uint8_t  ECC;                  /* ECC code */
-  __IO uint8_t  CSD_CRC;              /* CSD CRC */
-  __IO uint8_t  Reserved4;            /* always 1*/
-} SD_CSD;
-
-typedef struct      /*Card Identification Data*/
-{
-  __IO uint8_t  ManufacturerID;       /* ManufacturerID */
-  __IO uint16_t OEM_AppliID;          /* OEM/Application ID */
-  __IO uint32_t ProdName1;            /* Product Name part1 */
-  __IO uint8_t  ProdName2;            /* Product Name part2*/
-  __IO uint8_t  ProdRev;              /* Product Revision */
-  __IO uint32_t ProdSN;               /* Product Serial Number */
-  __IO uint8_t  Reserved1;            /* Reserved1 */
-  __IO uint16_t ManufactDate;         /* Manufacturing Date */
-  __IO uint8_t  CID_CRC;              /* CID CRC */
-  __IO uint8_t  Reserved2;            /* always 1 */
-} SD_CID;
-
-typedef struct
-{
-  SD_CSD SD_csd;
-  SD_CID SD_cid;
-  uint32_t CardCapacity; /* Card Capacity */
-  uint32_t CardBlockSize; /* Card Block Size */
-  uint16_t RCA;
-  uint8_t CardType;
-} SD_CardInfo;
-
-/* Exported constants --------------------------------------------------------*/
-#define SD_DMA_MODE                     ((uint32_t)0x00000000)
-#define SD_INTERRUPT_MODE               ((uint32_t)0x00000001)
-#define SD_POLLING_MODE                 ((uint32_t)0x00000002)
-
-/* Supported Memory Cards */
-#define SDIO_STD_CAPACITY_SD_CARD_V1_1     ((uint32_t)0x0)
-#define SDIO_STD_CAPACITY_SD_CARD_V2_0     ((uint32_t)0x1)
-#define SDIO_HIGH_CAPACITY_SD_CARD         ((uint32_t)0x2)
-#define SDIO_MULTIMEDIA_CARD               ((uint32_t)0x3)
-#define SDIO_SECURE_DIGITAL_IO_CARD        ((uint32_t)0x4)
-#define SDIO_HIGH_SPEED_MULTIMEDIA_CARD    ((uint32_t)0x5)
-#define SDIO_SECURE_DIGITAL_IO_COMBO_CARD  ((uint32_t)0x6)
-#define SDIO_HIGH_CAPACITY_MMC_CARD        ((uint32_t)0x7)
-
-/* Exported macro ------------------------------------------------------------*/
-/* Exported functions ------------------------------------------------------- */
-SD_Error SD_Init(void);
-SD_Error SD_PowerON(void);
-SD_Error SD_PowerOFF(void);
-SD_Error SD_InitializeCards(void);
-SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo);
-SD_Error SD_EnableWideBusOperation(uint32_t WideMode);
-SD_Error SD_SetDeviceMode(uint32_t Mode);
-SD_Error SD_SelectDeselect(uint32_t addr);
-SD_Error SD_ReadBlock(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize);
-SD_Error SD_ReadMultiBlocks(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize, uint32_t NumberOfBlocks);
-SD_Error SD_WriteBlock(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize);
-SD_Error SD_WriteMultiBlocks(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize, uint32_t NumberOfBlocks);
-SDTransferState SD_GetTransferState(void);
-SD_Error SD_StopTransfer(void);
-SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr);
-SD_Error SD_SendStatus(uint32_t *pcardstatus);
-SD_Error SD_SendSDStatus(uint32_t *psdstatus);
-SD_Error SD_ProcessIRQSrc(void);
-
-#endif /* __SDCARD_H */
-
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-  
-/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
+/**

+  ******************************************************************************

+  * @file    SDIO/sdcard.h

+  * @author  MCD Application Team

+  * @version V3.1.2

+  * @date    09/28/2009

+  * @brief   This file contains all the functions prototypes for the SD Card

+  *          driver firmware library.

+  ******************************************************************************

+  * @copy

+  *

+  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS

+  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE

+  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY

+  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING

+  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE

+  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

+  *

+  * <h2><center>&copy; COPYRIGHT 2009 STMicroelectronics</center></h2>

+  */

+

+/** @addtogroup STM32F10x_StdPeriph_Examples

+  * @{

+  */

+

+/** @addtogroup SDIO_Example

+  * @{

+  */

+

+/* Define to prevent recursive inclusion -------------------------------------*/

+#ifndef __SDCARD_H

+#define __SDCARD_H

+

+/* Includes ------------------------------------------------------------------*/

+#include "stm32f10x.h"

+

+/* Exported types ------------------------------------------------------------*/

+typedef enum

+{

+  /* SDIO specific error defines */

+  SD_CMD_CRC_FAIL                    = (1), /* Command response received (but CRC check failed) */

+  SD_DATA_CRC_FAIL                   = (2), /* Data bock sent/received (CRC check Failed) */

+  SD_CMD_RSP_TIMEOUT                 = (3), /* Command response timeout */

+  SD_DATA_TIMEOUT                    = (4), /* Data time out */

+  SD_TX_UNDERRUN                     = (5), /* Transmit FIFO under-run */

+  SD_RX_OVERRUN                      = (6), /* Receive FIFO over-run */

+  SD_START_BIT_ERR                   = (7), /* Start bit not detected on all data signals in widE bus mode */

+  SD_CMD_OUT_OF_RANGE                = (8), /* CMD's argument was out of range.*/

+  SD_ADDR_MISALIGNED                 = (9), /* Misaligned address */

+  SD_BLOCK_LEN_ERR                   = (10), /* Transferred block length is not allowed for the card or the number of transferred bytes does not match the block length */

+  SD_ERASE_SEQ_ERR                   = (11), /* An error in the sequence of erase command occurs.*/

+  SD_BAD_ERASE_PARAM                 = (12), /* An Invalid selection for erase groups */

+  SD_WRITE_PROT_VIOLATION            = (13), /* Attempt to program a write protect block */

+  SD_LOCK_UNLOCK_FAILED              = (14), /* Sequence or password error has been detected in unlock command or if there was an attempt to access a locked card */

+  SD_COM_CRC_FAILED                  = (15), /* CRC check of the previous command failed */

+  SD_ILLEGAL_CMD                     = (16), /* Command is not legal for the card state */

+  SD_CARD_ECC_FAILED                 = (17), /* Card internal ECC was applied but failed to correct the data */

+  SD_CC_ERROR                        = (18), /* Internal card controller error */

+  SD_GENERAL_UNKNOWN_ERROR           = (19), /* General or Unknown error */

+  SD_STREAM_READ_UNDERRUN            = (20), /* The card could not sustain data transfer in stream read operation. */

+  SD_STREAM_WRITE_OVERRUN            = (21), /* The card could not sustain data programming in stream mode */

+  SD_CID_CSD_OVERWRITE               = (22), /* CID/CSD overwrite error */

+  SD_WP_ERASE_SKIP                   = (23), /* only partial address space was erased */

+  SD_CARD_ECC_DISABLED               = (24), /* Command has been executed without using internal ECC */

+  SD_ERASE_RESET                     = (25), /* Erase sequence was cleared before executing because an out of erase sequence command was received */

+  SD_AKE_SEQ_ERROR                   = (26), /* Error in sequence of authentication. */

+  SD_INVALID_VOLTRANGE               = (27),

+  SD_ADDR_OUT_OF_RANGE               = (28),

+  SD_SWITCH_ERROR                    = (29),

+  SD_SDIO_DISABLED                   = (30),

+  SD_SDIO_FUNCTION_BUSY              = (31),

+  SD_SDIO_FUNCTION_FAILED            = (32),

+  SD_SDIO_UNKNOWN_FUNCTION           = (33),

+

+  /* Standard error defines */

+  SD_INTERNAL_ERROR,

+  SD_NOT_CONFIGURED,

+  SD_REQUEST_PENDING,

+  SD_REQUEST_NOT_APPLICABLE,

+  SD_INVALID_PARAMETER,

+  SD_UNSUPPORTED_FEATURE,

+  SD_UNSUPPORTED_HW,

+  SD_ERROR,

+  SD_OK,

+} SD_Error;

+

+/* SDIO Commands  Index */

+#define SDIO_GO_IDLE_STATE                       ((uint8_t)0)

+#define SDIO_SEND_OP_COND                        ((uint8_t)1)

+#define SDIO_ALL_SEND_CID                        ((uint8_t)2)

+#define SDIO_SET_REL_ADDR                        ((uint8_t)3) /* SDIO_SEND_REL_ADDR for SD Card */

+#define SDIO_SET_DSR                             ((uint8_t)4)

+#define SDIO_SDIO_SEN_OP_COND                    ((uint8_t)5)

+#define SDIO_HS_SWITCH                           ((uint8_t)6)

+#define SDIO_SEL_DESEL_CARD                      ((uint8_t)7)

+#define SDIO_HS_SEND_EXT_CSD                     ((uint8_t)8)

+#define SDIO_SEND_CSD                            ((uint8_t)9)

+#define SDIO_SEND_CID                            ((uint8_t)10)

+#define SDIO_READ_DAT_UNTIL_STOP                 ((uint8_t)11) /* SD Card doesn't support it */

+#define SDIO_STOP_TRANSMISSION                   ((uint8_t)12)

+#define SDIO_SEND_STATUS                         ((uint8_t)13)

+#define SDIO_HS_BUSTEST_READ                     ((uint8_t)14)

+#define SDIO_GO_INACTIVE_STATE                   ((uint8_t)15)

+#define SDIO_SET_BLOCKLEN                        ((uint8_t)16)

+#define SDIO_READ_SINGLE_BLOCK                   ((uint8_t)17)

+#define SDIO_READ_MULT_BLOCK                     ((uint8_t)18)

+#define SDIO_HS_BUSTEST_WRITE                    ((uint8_t)19)

+#define SDIO_WRITE_DAT_UNTIL_STOP                ((uint8_t)20) /* SD Card doesn't support it */

+#define SDIO_SET_BLOCK_COUNT                     ((uint8_t)23) /* SD Card doesn't support it */

+#define SDIO_WRITE_SINGLE_BLOCK                  ((uint8_t)24)

+#define SDIO_WRITE_MULT_BLOCK                    ((uint8_t)25)

+#define SDIO_PROG_CID                            ((uint8_t)26) /* reserved for manufacturers */

+#define SDIO_PROG_CSD                            ((uint8_t)27)

+#define SDIO_SET_WRITE_PROT                      ((uint8_t)28)

+#define SDIO_CLR_WRITE_PROT                      ((uint8_t)29)

+#define SDIO_SEND_WRITE_PROT                     ((uint8_t)30)

+#define SDIO_SD_ERASE_GRP_START                  ((uint8_t)32) /* To set the address of the first write

+                                                                  block to be erased. (For SD card only) */

+#define SDIO_SD_ERASE_GRP_END                    ((uint8_t)33) /* To set the address of the last write block of the

+                                                                  continuous range to be erased. (For SD card only) */

+#define SDIO_ERASE_GRP_START                     ((uint8_t)35) /* To set the address of the first write block to be erased.

+                                                                  (For MMC card only spec 3.31) */

+

+#define SDIO_ERASE_GRP_END                       ((uint8_t)36) /* To set the address of the last write block of the

+                                                                  continuous range to be erased. (For MMC card only spec 3.31) */

+

+#define SDIO_ERASE                               ((uint8_t)38)

+#define SDIO_FAST_IO                             ((uint8_t)39) /* SD Card doesn't support it */

+#define SDIO_GO_IRQ_STATE                        ((uint8_t)40) /* SD Card doesn't support it */

+#define SDIO_LOCK_UNLOCK                         ((uint8_t)42)

+#define SDIO_APP_CMD                             ((uint8_t)55)

+#define SDIO_GEN_CMD                             ((uint8_t)56)

+#define SDIO_NO_CMD                              ((uint8_t)64)

+

+/* Following commands are SD Card Specific commands.

+   SDIO_APP_CMD should be sent before sending these

+   commands. */

+#define SDIO_APP_SD_SET_BUSWIDTH                 ((uint8_t)6)  /* For SD Card only */

+#define SDIO_SD_APP_STAUS                        ((uint8_t)13) /* For SD Card only */

+#define SDIO_SD_APP_SEND_NUM_WRITE_BLOCKS        ((uint8_t)22) /* For SD Card only */

+#define SDIO_SD_APP_OP_COND                      ((uint8_t)41) /* For SD Card only */

+#define SDIO_SD_APP_SET_CLR_CARD_DETECT          ((uint8_t)42) /* For SD Card only */

+#define SDIO_SD_APP_SEND_SCR                     ((uint8_t)51) /* For SD Card only */

+#define SDIO_SDIO_RW_DIRECT                      ((uint8_t)52) /* For SD I/O Card only */

+#define SDIO_SDIO_RW_EXTENDED                    ((uint8_t)53) /* For SD I/O Card only */

+

+/* Following commands are SD Card Specific security commands.

+   SDIO_APP_CMD should be sent before sending these commands. */

+#define SDIO_SD_APP_GET_MKB                      ((uint8_t)43) /* For SD Card only */

+#define SDIO_SD_APP_GET_MID                      ((uint8_t)44) /* For SD Card only */

+#define SDIO_SD_APP_SET_CER_RN1                  ((uint8_t)45) /* For SD Card only */

+#define SDIO_SD_APP_GET_CER_RN2                  ((uint8_t)46) /* For SD Card only */

+#define SDIO_SD_APP_SET_CER_RES2                 ((uint8_t)47) /* For SD Card only */

+#define SDIO_SD_APP_GET_CER_RES1                 ((uint8_t)48) /* For SD Card only */

+#define SDIO_SD_APP_SECURE_READ_MULTIPLE_BLOCK   ((uint8_t)18) /* For SD Card only */

+#define SDIO_SD_APP_SECURE_WRITE_MULTIPLE_BLOCK  ((uint8_t)25) /* For SD Card only */

+#define SDIO_SD_APP_SECURE_ERASE                 ((uint8_t)38) /* For SD Card only */

+#define SDIO_SD_APP_CHANGE_SECURE_AREA           ((uint8_t)49) /* For SD Card only */

+#define SDIO_SD_APP_SECURE_WRITE_MKB             ((uint8_t)48) /* For SD Card only */

+

+typedef enum

+{

+  SD_NO_TRANSFER  = 0,

+  SD_TRANSFER_IN_PROGRESS

+} SDTransferState;

+

+typedef struct

+{

+  uint16_t TransferredBytes;

+  SD_Error TransferError;

+  uint8_t  padding;

+} SDLastTransferInfo;

+

+typedef struct       /* Card Specific Data */

+{

+  __IO uint8_t  CSDStruct;            /* CSD structure */

+  __IO uint8_t  SysSpecVersion;       /* System specification version */

+  __IO uint8_t  Reserved1;            /* Reserved */

+  __IO uint8_t  TAAC;                 /* Data read access-time 1 */

+  __IO uint8_t  NSAC;                 /* Data read access-time 2 in CLK cycles */

+  __IO uint8_t  MaxBusClkFrec;        /* Max. bus clock frequency */

+  __IO uint16_t CardComdClasses;      /* Card command classes */

+  __IO uint8_t  RdBlockLen;           /* Max. read data block length */

+  __IO uint8_t  PartBlockRead;        /* Partial blocks for read allowed */

+  __IO uint8_t  WrBlockMisalign;      /* Write block misalignment */

+  __IO uint8_t  RdBlockMisalign;      /* Read block misalignment */

+  __IO uint8_t  DSRImpl;              /* DSR implemented */

+  __IO uint8_t  Reserved2;            /* Reserved */

+  __IO uint32_t DeviceSize;           /* Device Size */

+  __IO uint8_t  MaxRdCurrentVDDMin;   /* Max. read current @ VDD min */

+  __IO uint8_t  MaxRdCurrentVDDMax;   /* Max. read current @ VDD max */

+  __IO uint8_t  MaxWrCurrentVDDMin;   /* Max. write current @ VDD min */

+  __IO uint8_t  MaxWrCurrentVDDMax;   /* Max. write current @ VDD max */

+  __IO uint8_t  DeviceSizeMul;        /* Device size multiplier */

+  __IO uint8_t  EraseGrSize;          /* Erase group size */

+  __IO uint8_t  EraseGrMul;           /* Erase group size multiplier */

+  __IO uint8_t  WrProtectGrSize;      /* Write protect group size */

+  __IO uint8_t  WrProtectGrEnable;    /* Write protect group enable */

+  __IO uint8_t  ManDeflECC;           /* Manufacturer default ECC */

+  __IO uint8_t  WrSpeedFact;          /* Write speed factor */

+  __IO uint8_t  MaxWrBlockLen;        /* Max. write data block length */

+  __IO uint8_t  WriteBlockPaPartial;  /* Partial blocks for write allowed */

+  __IO uint8_t  Reserved3;            /* Reserded */

+  __IO uint8_t  ContentProtectAppli;  /* Content protection application */

+  __IO uint8_t  FileFormatGrouop;     /* File format group */

+  __IO uint8_t  CopyFlag;             /* Copy flag (OTP) */

+  __IO uint8_t  PermWrProtect;        /* Permanent write protection */

+  __IO uint8_t  TempWrProtect;        /* Temporary write protection */

+  __IO uint8_t  FileFormat;           /* File Format */

+  __IO uint8_t  ECC;                  /* ECC code */

+  __IO uint8_t  CSD_CRC;              /* CSD CRC */

+  __IO uint8_t  Reserved4;            /* always 1*/

+} SD_CSD;

+

+typedef struct      /*Card Identification Data*/

+{

+  __IO uint8_t  ManufacturerID;       /* ManufacturerID */

+  __IO uint16_t OEM_AppliID;          /* OEM/Application ID */

+  __IO uint32_t ProdName1;            /* Product Name part1 */

+  __IO uint8_t  ProdName2;            /* Product Name part2*/

+  __IO uint8_t  ProdRev;              /* Product Revision */

+  __IO uint32_t ProdSN;               /* Product Serial Number */

+  __IO uint8_t  Reserved1;            /* Reserved1 */

+  __IO uint16_t ManufactDate;         /* Manufacturing Date */

+  __IO uint8_t  CID_CRC;              /* CID CRC */

+  __IO uint8_t  Reserved2;            /* always 1 */

+} SD_CID;

+

+typedef struct

+{

+  SD_CSD SD_csd;

+  SD_CID SD_cid;

+  uint32_t CardCapacity; /* Card Capacity */

+  uint32_t CardBlockSize; /* Card Block Size */

+  uint16_t RCA;

+  uint8_t CardType;

+} SD_CardInfo;

+

+/* Exported constants --------------------------------------------------------*/

+#define SD_DMA_MODE                     ((uint32_t)0x00000000)

+#define SD_INTERRUPT_MODE               ((uint32_t)0x00000001)

+#define SD_POLLING_MODE                 ((uint32_t)0x00000002)

+

+/* Supported Memory Cards */

+#define SDIO_STD_CAPACITY_SD_CARD_V1_1     ((uint32_t)0x0)

+#define SDIO_STD_CAPACITY_SD_CARD_V2_0     ((uint32_t)0x1)

+#define SDIO_HIGH_CAPACITY_SD_CARD         ((uint32_t)0x2)

+#define SDIO_MULTIMEDIA_CARD               ((uint32_t)0x3)

+#define SDIO_SECURE_DIGITAL_IO_CARD        ((uint32_t)0x4)

+#define SDIO_HIGH_SPEED_MULTIMEDIA_CARD    ((uint32_t)0x5)

+#define SDIO_SECURE_DIGITAL_IO_COMBO_CARD  ((uint32_t)0x6)

+#define SDIO_HIGH_CAPACITY_MMC_CARD        ((uint32_t)0x7)

+

+/* Exported macro ------------------------------------------------------------*/

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

+SD_Error SD_Init(void);

+SD_Error SD_PowerON(void);

+SD_Error SD_PowerOFF(void);

+SD_Error SD_InitializeCards(void);

+SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo);

+SD_Error SD_EnableWideBusOperation(uint32_t WideMode);

+SD_Error SD_SetDeviceMode(uint32_t Mode);

+SD_Error SD_SelectDeselect(uint32_t addr);

+SD_Error SD_ReadBlock(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize);

+SD_Error SD_ReadMultiBlocks(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize, uint32_t NumberOfBlocks);

+SD_Error SD_WriteBlock(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize);

+SD_Error SD_WriteMultiBlocks(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize, uint32_t NumberOfBlocks);

+SDTransferState SD_GetTransferState(void);

+SD_Error SD_StopTransfer(void);

+SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr);

+SD_Error SD_SendStatus(uint32_t *pcardstatus);

+SD_Error SD_SendSDStatus(uint32_t *psdstatus);

+SD_Error SD_ProcessIRQSrc(void);

+

+#endif /* __SDCARD_H */

+

+/**

+  * @}

+  */

+

+/**

+  * @}

+  */

+

+/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/