bsp_sdio_sd.c

stm32-SDIO+FatFS文件系统txt-int-ascii

/*
	2011-10-21 修改 SD_Error SD_PowerON(void) 函数，部分国产SD卡，不支持检查电压命令。
*/

/**
  ******************************************************************************
  * @file    stm32_eval_sdio_sd.c
  * @author  MCD Application Team
  * @version V4.4.0
  * @date    31-December-2010
  * @brief   This file provides a set of functions needed to manage the SDIO SD 
  *          Card memory mounted on STM32xx-EVAL board (refer to stm32_eval.h
  *          to know about the boards supporting this memory). 
  *          It implements a high level communication layer for read and write 
  *          from/to this memory. The needed STM32 hardware resources (SDIO and 
  *          GPIO) are defined in stm32xx_eval.h file, and the initialization is 
  *          performed in SD_LowLevel_Init() function declared in stm32xx_eval.c 
  *          file.
  *          You can easily tailor this driver to any other development board, 
  *          by just adapting the defines for hardware resources and 
  *          SD_LowLevel_Init() function.
  *            
  *          +-----------------------------------------------------------+
  *          |                     Pin assignment                        |
  *          +-----------------------------+---------------+-------------+
  *          |  STM32 SDIO Pins            |     SD        |    Pin      |
  *          +-----------------------------+---------------+-------------+
  *          |      SDIO D2                |   D2          |    1        |
  *          |      SDIO D3                |   D3          |    2        |
  *          |      SDIO CMD               |   CMD         |    3        |
  *          |                             |   VCC         |    4 (3.3 V)|
  *          |      SDIO CLK               |   CLK         |    5        |
  *          |                             |   GND         |    6 (0 V)  |
  *          |      SDIO D0                |   D0          |    7        |
  *          |      SDIO D1                |   D1          |    8        |  
  *          +-----------------------------+---------------+-------------+   
  ******************************************************************************
  * @attention
  *
  * 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 2010 STMicroelectronics</center></h2>
  ******************************************************************************  
  */ 

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

#include "stm32f10x.h"
#include "bsp_sdio_sd.h"

/** @addtogroup Utilities
  * @{
  */
  
/** @addtogroup STM32_EVAL
  * @{
  */ 

/** @addtogroup Common
  * @{
  */
  
/** @addtogroup STM32_EVAL_SDIO_SD
  * @brief      This file provides all the SD Card driver firmware functions.
  * @{
  */ 

/** @defgroup STM32_EVAL_SDIO_SD_Private_Types
  * @{
  */ 
/**
  * @}
  */ 


/** @defgroup STM32_EVAL_SDIO_SD_Private_Defines
  * @{
  */ 
/** 
  * @brief  SDIO Static flags, TimeOut, FIFO Address  
  */
#define NULL 0
#define SDIO_STATIC_FLAGS               ((uint32_t)0x000005FF)
#define SDIO_CMD0TIMEOUT                ((uint32_t)0x00010000)

/** 
  * @brief  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)

/** 
  * @brief  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_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_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)

/** 
  * @brief  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)

/** 
  * @brief  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)

/**
  * @}
  */ 


/** @defgroup STM32_EVAL_SDIO_SD_Private_Macros
  * @{
  */
/**
  * @}
  */ 
  

/** @defgroup STM32_EVAL_SDIO_SD_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;
__IO SD_Error TransferError = SD_OK;
__IO uint32_t TransferEnd = 0;
__IO uint32_t NumberOfBytes = 0;
SD_CardInfo SDCardInfo;
SDIO_InitTypeDef SDIO_InitStructure;
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
SDIO_DataInitTypeDef SDIO_DataInitStructure;   
/**
  * @}
  */ 


/** @defgroup STM32_EVAL_SDIO_SD_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);
  
/**
  * @}
  */ 


/** @defgroup STM32_EVAL_SDIO_SD_Private_Functions
  * @{
  */  

/**
  * @brief  DeInitializes the SDIO interface.
  * @param  None
  * @retval None
  */
void SD_DeInit(void)
{ 
  SD_LowLevel_DeInit();
}

/**
  * @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;
  
  /* SDIO Peripheral Low Level Init */
  SD_LowLevel_Init();

  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 */
  /*!< SDIOCLK = HCLK, SDIO_CK = HCLK/(2 + SDIO_TRANSFER_CLK_DIV) */
  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);
  
  if (errorstatus == SD_OK)
  {
    /*----------------- Read CSD/CID MSD registers ------------------*/
    errorstatus = SD_GetCardInfo(&SDCardInfo);
  }

  if (errorstatus == SD_OK)
  {
    /*----------------- Select Card --------------------------------*/
    errorstatus = SD_SelectDeselect((uint32_t) (SDCardInfo.RCA << 16));
  }

  if (errorstatus == SD_OK)
  {
    errorstatus = SD_EnableWideBusOperation(SDIO_BusWide_4b);
  }  

  /* Set Device Transfer Mode to DMA */
  if (errorstatus == SD_OK)
  {  
    errorstatus = SD_SetDeviceMode(SD_DMA_MODE);
  }
  
  return(errorstatus);
}

/**
  * @brief  Gets the cuurent sd card data transfer status.
  * @param  None
  * @retval SDTransferState: Data Transfer state.
  *   This value can be: 
  *        - SD_TRANSFER_OK: No data transfer is acting
  *        - SD_TRANSFER_BUSY: Data transfer is acting
  */
SDTransferState SD_GetStatus(void)
{
  SDCardState cardstate =  SD_CARD_TRANSFER;

  cardstate = SD_GetState();
  
  if (cardstate == SD_CARD_TRANSFER)
  {
    return(SD_TRANSFER_OK);
  }
  else if(cardstate == SD_CARD_ERROR)
  {
    return (SD_TRANSFER_ERROR);
  }
  else
  {
    return(SD_TRANSFER_BUSY);
  }
}

/**
  * @brief  Returns the current card's state.
  * @param  None
  * @retval SDCardState: SD Card Error or SD Card Current State.
  */
SDCardState SD_GetState(void)
{
  uint32_t resp1 = 0;
  
  if(SD_Detect()== SD_PRESENT)
  {
    if (SD_SendStatus(&resp1) != SD_OK)
    {
      return SD_CARD_ERROR;
    }
    else
    {
      return (SDCardState)((resp1 >> 9) & 0x0F);
    }
  }
  else
  {
    return SD_CARD_ERROR;
  }
}

/**
 * @brief  Detect if SD card is correctly plugged in the memory slot.
 * @param  None
 * @retval Return if SD is detected or not
 */
uint8_t SD_Detect(void)
{
  __IO uint8_t status = SD_PRESENT;

  /*!< Check GPIO to detect SD */
  if (GPIO_ReadInputDataBit(SD_DETECT_GPIO_PORT, SD_DETECT_PIN) != Bit_RESET)
  {
    status = SD_NOT_PRESENT;
  }
  return status;
}

/**
  * @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, validvoltage = 0;
  uint32_t SDType = SD_STD_CAPACITY;

  /*!< Power ON Sequence -----------------------------------------------------*/
  /*!< Configure the SDIO peripheral */
  /*!< SDIOCLK = HCLK, SDIO_CK = HCLK/(2 + SDIO_INIT_CLK_DIV) */
  /*!< SDIO_CK for initialization should not exceed 400 KHz */  
  SDIO_InitStructure.SDIO_ClockDiv = SDIO_INIT_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);

  /*!< 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 = SD_CMD_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);