STM32F103(GD32F103)SD卡加FATFS

FATFS一直是直接到fatfs官网上下载文件代码

 移植只需要这几个代码，

diskio.c是文件中需要更改驱动的代码，更改的驱动如下：

#include "ff.h"            /* Obtains integer types */
#include "diskio.h"        /* Declarations of disk functions */
#include "sd.h"
#include "main.h"
/* Definitions of physical drive number for each drive */
#define DEV_RAM        0    /* Example: Map Ramdisk to physical drive 0 */
#define DEV_MMC        1    /* Example: Map MMC/SD card to physical drive 1 */
#define DEV_USB        2    /* Example: Map USB MSD to physical drive 2 */


/*-----------------------------------------------------------------------*/
/* Get Drive Status                                                      */
/*-----------------------------------------------------------------------*/

DSTATUS disk_status (
    BYTE pdrv        /* Physical drive nmuber to identify the drive */
)
{
    if(HAL_SD_GetCardState(&hsd) == HAL_SD_CARD_TRANSFER)
    {
        return RES_OK;
    }
    else
    {
        return STA_NOINIT;
    }
}



/*-----------------------------------------------------------------------*/
/* Inidialize a Drive                                                    */
/*-----------------------------------------------------------------------*/

DSTATUS disk_initialize (
    BYTE pdrv                /* Physical drive nmuber to identify the drive */
)
{

     SD_Init();
    return  RES_OK;
    

}



/*-----------------------------------------------------------------------*/
/* Read Sector(s)                                                        */
/*-----------------------------------------------------------------------*/

DRESULT disk_read (
    BYTE pdrv,        /* Physical drive nmuber to identify the drive */
    BYTE *buff,        /* Data buffer to store read data */
    LBA_t sector,    /* Start sector in LBA */
    UINT count        /* Number of sectors to read */
)
{
 if (HAL_SD_ReadBlocks(&hsd, buff, sector, count,HAL_MAX_DELAY) != HAL_OK) {
        return RES_ERROR;
    }
    /* 等待传输完成（可替换为信号量或事件标志） */
    while (HAL_SD_GetCardState(&hsd) != HAL_SD_CARD_TRANSFER);
    return RES_OK;
}



/*-----------------------------------------------------------------------*/
/* Write Sector(s)                                                       */
/*-----------------------------------------------------------------------*/

#if FF_FS_READONLY == 0

DRESULT disk_write (
    BYTE pdrv,            /* Physical drive nmuber to identify the drive */
    const BYTE *buff,    /* Data to be written */
    LBA_t sector,        /* Start sector in LBA */
    UINT count            /* Number of sectors to write */
)
{
if (HAL_SD_WriteBlocks(&hsd, (uint8_t*)buff, sector, count,HAL_MAX_DELAY) != HAL_OK) {
        return RES_ERROR;
    }
    /* 等待传输完成 */
    while (HAL_SD_GetCardState(&hsd) != HAL_SD_CARD_TRANSFER);
    return RES_OK;
}

#endif


/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions                                               */
/*-----------------------------------------------------------------------*/

DRESULT disk_ioctl (
    BYTE pdrv,        /* Physical drive nmuber (0..) */
    BYTE cmd,        /* Control code */
    void *buff        /* Buffer to send/receive control data */
)
{
    DRESULT res;
    int result;
//注意pdrv这个跟可以挂载的卷有关#define FF_VOLUMES 3，FR_res=  f_mount(&fs, "1:", 1);   "1:"这个是1就到DEV_MMC
    switch (pdrv) {
    case DEV_RAM :

        // Process of the command for the RAM drive

        return res;

    case DEV_MMC :

        // Process of the command for the MMC/SD card
      if(cmd ==1||cmd ==2)
        {
    *(DWORD*)buff = SDIO_Ioctl(cmd);
        }
        else
        {
         SDIO_Ioctl(cmd);
        }
        return RES_OK;

    

    case DEV_USB :

        // Process of the command the USB drive

        return res;
    }

    return RES_PARERR;
}

#include "main.h"
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <stdlib.h>
#include "sd.h"


SD_HandleTypeDef hsd;          // SDIO句柄
DMA_HandleTypeDef hdma_sdio;   // DMA句柄
HAL_SD_CardInfoTypeDef Info ={0};
void SD_GPIO_Config()
{
    MCU_SDIO_CK_GPIO_CLK_ENABLE();
  MCU_SDIO_CMD_GPIO_CLK_ENABLE();
    MCU_SDIO_D0_GPIO_CLK_ENABLE();
    MCU_SDIO_D1_GPIO_CLK_ENABLE();
    MCU_SDIO_D2_GPIO_CLK_ENABLE();
    MCU_SDIO_D3_GPIO_CLK_ENABLE();
    
    __HAL_RCC_SDIO_CLK_ENABLE();
    
    GPIO_InitTypeDef SDIO_GPIO_Initstruct;
    SDIO_GPIO_Initstruct.Mode =    GPIO_MODE_AF_PP;
    SDIO_GPIO_Initstruct.Pin = MCU_SDIO_CK_PIN|MCU_SDIO_D0_PIN|MCU_SDIO_D1_PIN|MCU_SDIO_D2_PIN|MCU_SDIO_D3_PIN;
    SDIO_GPIO_Initstruct.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOC,&SDIO_GPIO_Initstruct);
    
    SDIO_GPIO_Initstruct.Pin = MCU_SDIO_CMD_PIN;
    HAL_GPIO_Init(GPIOD,&SDIO_GPIO_Initstruct);
    

}

void SDIO_DMA_Config(void) {
    __HAL_RCC_DMA2_CLK_ENABLE();

    hdma_sdio.Instance = DMA2_Channel4;
    hdma_sdio.Init.Direction = DMA_PERIPH_TO_MEMORY;
    hdma_sdio.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_sdio.Init.MemInc = DMA_MINC_ENABLE;
    hdma_sdio.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
    hdma_sdio.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
    hdma_sdio.Init.Mode = DMA_NORMAL;
    hdma_sdio.Init.Priority = DMA_PRIORITY_HIGH;

    HAL_DMA_Init(&hdma_sdio);
    __HAL_LINKDMA(&hsd, hdmarx, hdma_sdio);  // 关联DMA到SDIO接收
    __HAL_LINKDMA(&hsd, hdmatx, hdma_sdio);  // 关联DMA到SDIO发送

    // 使能DMA中断
    __HAL_DMA_ENABLE_IT(&hdma_sdio,DMA_IT_TC);
    HAL_NVIC_SetPriority(DMA2_Channel4_IRQn, 5, 0);
    HAL_NVIC_EnableIRQ(DMA2_Channel4_IRQn);
    
}

void SD_Init()
{
    
    SD_GPIO_Config();
    
     hsd.Instance = SDIO;

  hsd.Init.ClockEdge           = SDIO_CLOCK_EDGE_RISING;
  hsd.Init.ClockBypass         = SDIO_CLOCK_BYPASS_DISABLE;
  hsd.Init.ClockPowerSave      = SDIO_CLOCK_POWER_SAVE_DISABLE;
  hsd.Init.BusWide             = SDIO_BUS_WIDE_1B;//初始化使用1因为初始化速率慢
  hsd.Init.HardwareFlowControl = SDIO_HARDWARE_FLOW_CONTROL_DISABLE;
  hsd.Init.ClockDiv            = 70;
    if(HAL_SD_Init(&hsd)!=HAL_OK)
    {
        Error_Handler();
    }
//初始化后切换到4位总线
    if(HAL_SD_ConfigWideBusOperation(&hsd,SDIO_BUS_WIDE_4B)!= HAL_OK)
    {
        Error_Handler();
    }
        hsd.Init.ClockDiv = 0x4;
    if (HAL_SD_Init(&hsd) != HAL_OK) {
        Error_Handler();
    }
    HAL_NVIC_SetPriority(SDIO_IRQn, 4, 0);  // 设置优先级（最高优先级）
HAL_NVIC_EnableIRQ(SDIO_IRQn);          // 启用SDIO全局中断
    //SDIO_DMA_Config();
    HAL_StatusTypeDef        status = HAL_SD_GetCardInfo(&hsd,&Info);
    if(status == HAL_OK)
    {
        if(Info.CardType == CARD_SDHC_SDXC)
        {
            printf("CardType: SDHC/SDXC\r\n");
        }
        else if(Info.CardType == CARD_SDSC)
        {
            printf("CardType: SDSC\r\n");
        }
        else if(Info.CardType ==CARD_SECURED )
        {
            printf("CardType: SECURED\r\n");
        }
        else
        {
        }
        
        
        if(Info.CardVersion == CARD_V1_X)
        {
            printf("CardVersion: CARD_V1_X\r\n");
        }
        else if(Info.CardVersion == CARD_V2_X)
        {
            printf("CardVersion: CARD_V2_X\r\n");
        }
        else
        {}
            
        printf("SD Block num %d \r\n",Info.BlockNbr);    
        printf("SD Block size %d \r\n",Info.BlockSize);    
        printf("SD Block addr %x \r\n",Info.RelCardAdd);    
        printf("SD Block capacity %f \r\n",Info.BlockNbr/1048576./2);//多少G
        }
}
int SDIO_Ioctl(uint8_t cmd)
{
     uint32_t res = 0;
   if(cmd> 4)
     {
     return -1;
     }
     else
     {
        switch (cmd)
        {
             case 0:
                res = 0;
                break;
             case 1:
                 res = Info.BlockNbr;
                 break;
             case 2:
                 res = Info.BlockSize;
                 break;
             case 3 :
                    res = Info.BlockSize;
                 break;
                default :
                    res = 4;
                 break;
        }
        return res;
         
     }
}

 在main函数的测试代码如下

    FRESULT FR_res = 0;
    FIL file;
    FATFS fs;     /* Ponter to the filesystem object */
    uint8_t WriteBuff[1024];
    uint8_t ReadBuff[1024];
    unsigned int fs_num =0;
void FATFS_Test()
{
     //最最重要f_mkfs格式化一定不要放到f_mount前面，放到前面在f_open中就报错FR_NO_FILESYSTEM
只要sd读写驱动没问题，放到disk.c中的文件swith没有找错位置挂载一般都会成功，除非卡坏了

//      FR_res = f_mkfs("1:",NULL,ReadBuff,sizeof(ReadBuff));
        FR_res=  f_mount(&fs, "1:", 1);            /* Mount the default drive */
//     FR_res = f_mkfs("1:",NULL,ReadBuff,sizeof(ReadBuff));
    if(FR_res == FR_NO_FILESYSTEM)
    {
        printf("The SD card not fileSystem\r\n");
    FR_res = f_mkfs("1:",NULL,ReadBuff,sizeof(ReadBuff));
         if(FR_res == RES_OK)
        {
            printf("fileSystem Create successful\r\n");             
            f_mount(NULL, "1:", 1);
            f_mount(&fs, "1:", 1);
        }
        else
        {
            printf("fileSystem Create failed\r\n");
        }  
        
    }
    else if(FR_res != RES_OK)
    {
        printf("mount err %d\r\n",FR_res);
    }
    else
    {
    printf("mount successful\r\n");
    }
    printf("write test \r\n");
//    FRESULT res = f_mkdir("1:/text");
//if (res == FR_OK) {
//    printf("目录创建成功！\r\n");
//} else if (res == FR_EXIST) {
//    printf("目录已存在，无需创建\r\n");}
//    FR_res= f_open(&file,"1:/text/yckt.txt",FA_CREATE_ALWAYS|FA_WRITE);//创建目录有目录
    FR_res= f_open(&file,"1:yckt.txt",FA_CREATE_ALWAYS|FA_WRITE);//没有目录
    if(FR_res == RES_OK)
    {
        printf("start write data ...... \r\n");
        sprintf((char*)WriteBuff,"%s","welcom everyone");
        FR_res= f_write(&file,WriteBuff,strlen(WriteBuff),&fs_num);
        if(FR_res == RES_OK)
        {
            printf("write ok \r\n");
            printf("write data : %s \r\n",WriteBuff);        
        }
        else
        {
                printf("write failed  %d \r\n",FR_res);    
        }

    }
    else
    {
        printf("open flie failed  %d \r\n",FR_res);    
    }

         f_close(&file);

    FR_res= f_open(&file,"1:yckt.txt",FA_OPEN_EXISTING|FA_READ);
    if(FR_res == FR_OK)
    {
        printf("start read data ...... \r\n");
        FR_res= f_read(&file,ReadBuff,sizeof(ReadBuff),&fs_num);
        if(FR_res == RES_OK)
        {
            printf("read ok  %d\r\n",fs_num);
            printf("read data : %s \r\n",ReadBuff);        
        }
        else
        {
                printf("read failed  %d \r\n",FR_res);    
        }
    
    }
    else
    {
        printf("open flie failed  %d \r\n",FR_res);    
    }
    f_close(&file);
    
    f_mount(NULL, "1:", 1);    
}

关键的配置文件如下
/*---------------------------------------------------------------------------/
/  Configurations of FatFs Module
/---------------------------------------------------------------------------*/

#define FFCONF_DEF    5380    /* Revision ID */

/*---------------------------------------------------------------------------/
/ Function Configurations
/---------------------------------------------------------------------------*/

#define FF_FS_READONLY    0
/* This option switches read-only configuration. (0:Read/Write or 1:Read-only)
/  Read-only configuration removes writing API functions, f_write(), f_sync(),
/  f_unlink(), f_mkdir(), f_chmod(), f_rename(), f_truncate(), f_getfree()
/  and optional writing functions as well. */


#define FF_FS_MINIMIZE    0
/* This option defines minimization level to remove some basic API functions.
/
/   0: Basic functions are fully enabled.
/   1: f_stat(), f_getfree(), f_unlink(), f_mkdir(), f_truncate() and f_rename()
/      are removed.
/   2: f_opendir(), f_readdir() and f_closedir() are removed in addition to 1.
/   3: f_lseek() function is removed in addition to 2. */


#define FF_USE_FIND        0
/* This option switches filtered directory read functions, f_findfirst() and
/  f_findnext(). (0:Disable, 1:Enable 2:Enable with matching altname[] too) */


#define FF_USE_MKFS        1
/* This option switches f_mkfs(). (0:Disable or 1:Enable) */


#define FF_USE_FASTSEEK    0
/* This option switches fast seek feature. (0:Disable or 1:Enable) */


#define FF_USE_EXPAND    0
/* This option switches f_expand(). (0:Disable or 1:Enable) */


#define FF_USE_CHMOD    0
/* This option switches attribute control API functions, f_chmod() and f_utime().
/  (0:Disable or 1:Enable) Also FF_FS_READONLY needs to be 0 to enable this option. */


#define FF_USE_LABEL    0
/* This option switches volume label API functions, f_getlabel() and f_setlabel().
/  (0:Disable or 1:Enable) */


#define FF_USE_FORWARD    0
/* This option switches f_forward(). (0:Disable or 1:Enable) */


#define FF_USE_STRFUNC    0
#define FF_PRINT_LLI    0
#define FF_PRINT_FLOAT    0
#define FF_STRF_ENCODE    3
/* FF_USE_STRFUNC switches the string API functions, f_gets(), f_putc(), f_puts()
/  and f_printf().
/
/   0: Disable. FF_PRINT_LLI, FF_PRINT_FLOAT and FF_STRF_ENCODE have no effect.
/   1: Enable without LF - CRLF conversion.
/   2: Enable with LF - CRLF conversion.
/
/  FF_PRINT_LLI = 1 makes f_printf() support long long argument and FF_PRINT_FLOAT = 1/2
/  makes f_printf() support floating point argument. These features want C99 or later.
/  When FF_LFN_UNICODE >= 1 with LFN enabled, string API functions convert the character
/  encoding in it. FF_STRF_ENCODE selects assumption of character encoding ON THE FILE
/  to be read/written via those functions.
/
/   0: ANSI/OEM in current CP
/   1: Unicode in UTF-16LE
/   2: Unicode in UTF-16BE
/   3: Unicode in UTF-8
*/


/*---------------------------------------------------------------------------/
/ Locale and Namespace Configurations
/---------------------------------------------------------------------------*/

#define FF_CODE_PAGE    936//选择中文
/* This option specifies the OEM code page to be used on the target system.
/  Incorrect code page setting can cause a file open failure.
/
/   437 - U.S.
/   720 - Arabic
/   737 - Greek
/   771 - KBL
/   775 - Baltic
/   850 - Latin 1
/   852 - Latin 2
/   855 - Cyrillic
/   857 - Turkish
/   860 - Portuguese
/   861 - Icelandic
/   862 - Hebrew
/   863 - Canadian French
/   864 - Arabic
/   865 - Nordic
/   866 - Russian
/   869 - Greek 2
/   932 - Japanese (DBCS)
/   936 - Simplified Chinese (DBCS)
/   949 - Korean (DBCS)
/   950 - Traditional Chinese (DBCS)
/     0 - Include all code pages above and configured by f_setcp()
*/


#define FF_USE_LFN        2//使能长函数名称在栈中创建，要是栈空间不够需要在启动文件中将其加大
#define FF_MAX_LFN        255
/* The FF_USE_LFN switches the support for LFN (long file name).
/
/   0: Disable LFN. FF_MAX_LFN has no effect.
/   1: Enable LFN with static working buffer on the BSS. Always NOT thread-safe.
/   2: Enable LFN with dynamic working buffer on the STACK.
/   3: Enable LFN with dynamic working buffer on the HEAP.
/
/  To enable the LFN, ffunicode.c needs to be added to the project. The LFN feature
/  requiers certain internal working buffer occupies (FF_MAX_LFN + 1) * 2 bytes and
/  additional (FF_MAX_LFN + 44) / 15 * 32 bytes when exFAT is enabled.
/  The FF_MAX_LFN defines size of the working buffer in UTF-16 code unit and it can
/  be in range of 12 to 255. It is recommended to be set 255 to fully support the LFN
/  specification.
/  When use stack for the working buffer, take care on stack overflow. When use heap
/  memory for the working buffer, memory management functions, ff_memalloc() and
/  ff_memfree() exemplified in ffsystem.c, need to be added to the project. */


#define FF_LFN_UNICODE    2//编码要改
/* This option switches the character encoding on the API when LFN is enabled.
/
/   0: ANSI/OEM in current CP (TCHAR = char)
/   1: Unicode in UTF-16 (TCHAR = WCHAR)
/   2: Unicode in UTF-8 (TCHAR = char)
/   3: Unicode in UTF-32 (TCHAR = DWORD)
/
/  Also behavior of string I/O functions will be affected by this option.
/  When LFN is not enabled, this option has no effect. */


#define FF_LFN_BUF        255
#define FF_SFN_BUF        12
/* This set of options defines size of file name members in the FILINFO structure
/  which is used to read out directory items. These values should be suffcient for
/  the file names to read. The maximum possible length of the read file name depends
/  on character encoding. When LFN is not enabled, these options have no effect. */


#define FF_FS_RPATH        0
/* This option configures support for relative path.
/
/   0: Disable relative path and remove related API functions.
/   1: Enable relative path. f_chdir() and f_chdrive() are available.
/   2: f_getcwd() is available in addition to 1.
*/


/*---------------------------------------------------------------------------/
/ Drive/Volume Configurations
/---------------------------------------------------------------------------*/

#define FF_VOLUMES        3//重要的卷号只能0~2，大于3就会返回FR_ERR_DISK
/* Number of volumes (logical drives) to be used. (1-10) */


#define FF_STR_VOLUME_ID    0//不给这个卷取别名
#define FF_VOLUME_STRS        "RAM","NAND","CF","SD","SD2","USB","USB2","USB3"
/* FF_STR_VOLUME_ID switches support for volume ID in arbitrary strings.
/  When FF_STR_VOLUME_ID is set to 1 or 2, arbitrary strings can be used as drive
/  number in the path name. FF_VOLUME_STRS defines the volume ID strings for each
/  logical drive. Number of items must not be less than FF_VOLUMES. Valid
/  characters for the volume ID strings are A-Z, a-z and 0-9, however, they are
/  compared in case-insensitive. If FF_STR_VOLUME_ID >= 1 and FF_VOLUME_STRS is
/  not defined, a user defined volume string table is needed as:
/
/  const char* VolumeStr[FF_VOLUMES] = {"ram","flash","sd","usb",...
*/


#define FF_MULTI_PARTITION    0
/* This option switches support for multiple volumes on the physical drive.
/  By default (0), each logical drive number is bound to the same physical drive
/  number and only an FAT volume found on the physical drive will be mounted.
/  When this feature is enabled (1), each logical drive number can be bound to
/  arbitrary physical drive and partition listed in the VolToPart[]. Also f_fdisk()
/  will be available. */


#define FF_MIN_SS        512
#define FF_MAX_SS        512
/* This set of options configures the range of sector size to be supported. (512,
/  1024, 2048 or 4096) Always set both 512 for most systems, generic memory card and
/  harddisk, but a larger value may be required for on-board flash memory and some
/  type of optical media. When FF_MAX_SS is larger than FF_MIN_SS, FatFs is
/  configured for variable sector size mode and disk_ioctl() needs to implement
/  GET_SECTOR_SIZE command. */


#define FF_LBA64        0
/* This option switches support for 64-bit LBA. (0:Disable or 1:Enable)
/  To enable the 64-bit LBA, also exFAT needs to be enabled. (FF_FS_EXFAT == 1) */


#define FF_MIN_GPT        0x10000000
/* Minimum number of sectors to switch GPT as partitioning format in f_mkfs() and 
/  f_fdisk(). 2^32 sectors maximum. This option has no effect when FF_LBA64 == 0. */


#define FF_USE_TRIM        0
/* This option switches support for ATA-TRIM. (0:Disable or 1:Enable)
/  To enable this feature, also CTRL_TRIM command should be implemented to
/  the disk_ioctl(). */



/*---------------------------------------------------------------------------/
/ System Configurations
/---------------------------------------------------------------------------*/

#define FF_FS_TINY        0
/* This option switches tiny buffer configuration. (0:Normal or 1:Tiny)
/  At the tiny configuration, size of file object (FIL) is shrinked FF_MAX_SS bytes.
/  Instead of private sector buffer eliminated from the file object, common sector
/  buffer in the filesystem object (FATFS) is used for the file data transfer. */


#define FF_FS_EXFAT        0//一定要判断是否能支持exFat，如果不支持就会报错FR_ERR_DISK
/* This option switches support for exFAT filesystem. (0:Disable or 1:Enable)
/  To enable exFAT, also LFN needs to be enabled. (FF_USE_LFN >= 1)
/  Note that enabling exFAT discards ANSI C (C89) compatibility. */


#define FF_FS_NORTC        1
#define FF_NORTC_MON    3
#define FF_NORTC_MDAY    24
#define FF_NORTC_YEAR    2025
/* The option FF_FS_NORTC switches timestamp feature. If the system does not have
/  an RTC or valid timestamp is not needed, set FF_FS_NORTC = 1 to disable the
/  timestamp feature. Every object modified by FatFs will have a fixed timestamp
/  defined by FF_NORTC_MON, FF_NORTC_MDAY and FF_NORTC_YEAR in local time.
/  To enable timestamp function (FF_FS_NORTC = 0), get_fattime() need to be added
/  to the project to read current time form real-time clock. FF_NORTC_MON,
/  FF_NORTC_MDAY and FF_NORTC_YEAR have no effect.
/  These options have no effect in read-only configuration (FF_FS_READONLY = 1). */


#define FF_FS_NOFSINFO    0
/* If you need to know correct free space on the FAT32 volume, set bit 0 of this
/  option, and f_getfree() at the first time after volume mount will force
/  a full FAT scan. Bit 1 controls the use of last allocated cluster number.
/
/  bit0=0: Use free cluster count in the FSINFO if available.
/  bit0=1: Do not trust free cluster count in the FSINFO.
/  bit1=0: Use last allocated cluster number in the FSINFO if available.
/  bit1=1: Do not trust last allocated cluster number in the FSINFO.
*/


#define FF_FS_LOCK        0
/* The option FF_FS_LOCK switches file lock function to control duplicated file open
/  and illegal operation to open objects. This option must be 0 when FF_FS_READONLY
/  is 1.
/
/  0:  Disable file lock function. To avoid volume corruption, application program
/      should avoid illegal open, remove and rename to the open objects.
/  >0: Enable file lock function. The value defines how many files/sub-directories
/      can be opened simultaneously under file lock control. Note that the file
/      lock control is independent of re-entrancy. */


#define FF_FS_REENTRANT    0
#define FF_FS_TIMEOUT    1000
/* The option FF_FS_REENTRANT switches the re-entrancy (thread safe) of the FatFs
/  module itself. Note that regardless of this option, file access to different
/  volume is always re-entrant and volume control functions, f_mount(), f_mkfs()
/  and f_fdisk(), are always not re-entrant. Only file/directory access to
/  the same volume is under control of this featuer.
/
/   0: Disable re-entrancy. FF_FS_TIMEOUT have no effect.
/   1: Enable re-entrancy. Also user provided synchronization handlers,
/      ff_mutex_create(), ff_mutex_delete(), ff_mutex_take() and ff_mutex_give(),
/      must be added to the project. Samples are available in ffsystem.c.
/
/  The FF_FS_TIMEOUT defines timeout period in unit of O/S time tick.
*/



/*--- End of configuration options ---*/