USB MSC类存储设备
Posted aron566
tags:
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USB MSC类存储设备
效果演示
这里演示了，FatFs挂载SPI Flash设备，创建一个test.txt文件，写入Hello,World!字符串，之后PC打开枚举成功的U盘设备，打开这个文本文件，将其内容改为了Aron566,2022-09-28
配置说明
硬件情况：
- STM32H743VIT6
- 外部SPI Flash GD25Q64C 8MB的空间大小
Flash信息：
* - 页面编程时间：典型值0.6ms
* - 扇区擦除时间：典型值50ms
* - 块擦除时间：典型值0.15/0.20s
* - 芯片擦除时间：典型值25s
* - 统一的4K字节扇区
* - 统一的32/64K字节块
* - 512Bytes编程
* - 10W次编程
这里用到了开源驱动组件SFUD，移植方法可以查看这里:https://blog.csdn.net/weixin_42892101/article/details/106588125
USB MSC类配置
MSC类的配置，可以实用CubeMX直接配置生成，网上有太多图文配置教程了，这里不多写，配置好之后
编译运行，USB连接PC电脑，应该会弹出一个待格式化的U盘
FatFs移植
移植FatFs建议首先确定自己的Flash驱动没问题
带RTOS的移植方法可以查看这里：https://blog.csdn.net/weixin_42892101/article/details/112245585
本次移植不带RTOS
工程中新建目录：FatFs用于存放源码，增加port目录存放移植接口文件，src目录存放源码
FatFs的配置
配置中，FF_CODE_PAGE改为437、FF_LFN_UNICODE为0，改为中文简体936 + UTF-8编码会乱码，知道的朋友可以说下
/*---------------------------------------------------------------------------/
/ FatFs Functional Configurations
/---------------------------------------------------------------------------*/
#define FFCONF_DEF 86631 /* 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 1
/* 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() function. (0:Disable or 1:Enable) */
#define FF_USE_FASTSEEK 0
/* This option switches fast seek function. (0:Disable or 1:Enable) */
#define FF_USE_EXPAND 0
/* This option switches f_expand function. (0:Disable or 1:Enable) */
#define FF_USE_CHMOD 0
/* This option switches attribute manipulation 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 functions, f_getlabel() and f_setlabel().
/ (0:Disable or 1:Enable) */
#define FF_USE_FORWARD 0
/* This option switches f_forward() function. (0:Disable or 1:Enable) */
#define FF_USE_STRFUNC 0
#define FF_PRINT_LLI 0
#define FF_PRINT_FLOAT 1
#define FF_STRF_ENCODE 3
/* FF_USE_STRFUNC switches string 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 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 437
/* 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 1
#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 function
/ 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 it 255 to fully support 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 0
/* 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 2
/* This option configures support for relative path.
/
/ 0: Disable relative path and remove related functions.
/ 1: Enable relative path. f_chdir() and f_chdrive() are available.
/ 2: f_getcwd() function is available in addition to 1.
*/
/*---------------------------------------------------------------------------/
/ Drive/Volume Configurations
/---------------------------------------------------------------------------*/
#define FF_VOLUMES 10
/* Number of volumes (logical drives) to be used. (1-10) */
#define FF_STR_VOLUME_ID 8
#define FF_VOLUME_STRS "RAM","NAND","CF","SD","SD2","USB","USB2","USB3","HHT_Disk"
/* 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 drives. 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 needs to be defined 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 function is enabled (1), each logical drive number can be bound to
/ arbitrary physical drive and partition listed in the VolToPart[]. Also f_fdisk()
/ funciton 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() function 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 function. 0x100000000 max. 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 Trim function, also CTRL_TRIM command should be implemented to the
/ disk_ioctl() function. */
/*---------------------------------------------------------------------------/
/ 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 1
/* 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 0
#define FF_NORTC_MON 1
#define FF_NORTC_MDAY 1
#define FF_NORTC_YEAR 2020
/* The option FF_FS_NORTC switches timestamp functiton. If the system does not have
/ any RTC function or valid timestamp is not needed, set FF_FS_NORTC = 1 to disable
/ the timestamp function. 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() function 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() function at 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. */
/* #include <somertos.h> // O/S definitions */
#define FF_FS_REENTRANT 0
#define FF_FS_TIMEOUT 1000
#define FF_SYNC_t HANDLE
/* 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() function, are always not re-entrant. Only file/directory access
/ to the same volume is under control of this function.
/
/ 0: Disable re-entrancy. FF_FS_TIMEOUT and FF_SYNC_t have no effect.
/ 1: Enable re-entrancy. Also user provided synchronization handlers,
/ ff_req_grant(), ff_rel_grant(), ff_del_syncobj() and ff_cre_syncobj()
/ function, must be added to the project. Samples are available in
/ option/syscall.c.
/
/ The FF_FS_TIMEOUT defines timeout period in unit of time tick.
/ The FF_SYNC_t defines O/S dependent sync object type. e.g. HANDLE, ID, OS_EVENT*,
/ SemaphoreHandle_t and etc. A header file for O/S definitions needs to be
/ included somewhere in the scope of ff.h. */
/*--- End of configuration options ---*/
驱动接口
移植接口文件disk_port.c
主要用于提供FatFs的diskio.c读取、写入、擦除、控制接口，RTC时钟接口（获取秒）
/**
* @file disk_port.c
*
* @date 2022年09月27日 11:19:56 星期二
*
* @author aron566
*
* @copyright Copyright (c) 2022 aron566 <aron566@163.com>.
*
* @brief None.
*
* @details None.
*
* @version v1.0.0
*/
/** Includes -----------------------------------------------------------------*/
/* Private includes ----------------------------------------------------------*/
#include "disk_port.h"
#include <sfud.h>
#include "main.h"
#include "RTC_Port.h"
/** Use C compiler -----------------------------------------------------------*/
#ifdef __cplusplus ///< use C compiler
extern "C"
#endif
/** Private macros -----------------------------------------------------------*/
/** Private typedef ----------------------------------------------------------*/
/** Private constants --------------------------------------------------------*/
/** Public variables ---------------------------------------------------------*/
/** Private function prototypes ----------------------------------------------*/
/**
* @defgroup SPI FLASH DRIVE FUNC
* @
*/
static DSTATUS spi_flash_disk_status(void);
static DSTATUS spi_flash_disk_initialize(void);
static DRESULT spi_flash_disk_read(BYTE *buff, LBA_t sector, UINT count);
static DRESULT spi_flash_disk_write(const BYTE *buff, LBA_t sector, UINT count);
static DRESULT spi_flash_disk_ioctl(BYTE cmd, void *buff);
/** @*/
/** Public variables ---------------------------------------------------------*/
DISK_DRV_FUNC_MAP_Typedef_t disk_drv_array[DEV_TYPE_MAX] =
[DEV_SPI_FLASH] =
.get_disk_status_port = spi_flash_disk_status,
.disk_init_port = spi_flash_disk_initialize,
.disk_read_port = spi_flash_disk_read,
.disk_write_port = spi_flash_disk_write,
.disk_ioctl_port = spi_flash_disk_ioctl
,
;
// osMutexDef_t disk_mutex_array[DEV_TYPE_MAX] = 0;
/** Private user code --------------------------------------------------------*/
/** Private application code -------------------------------------------------*/
/** Private application code -------------------------------------------------*/
/*******************************************************************************
*
* Static code
*
********************************************************************************
*/
/**
******************************************************************
* @brief spi磁盘状态读取
* @param [in]None
* @return 1 Drive not initialized 2 No medium in the drive 4 Write protected
* @author aron566
* @version V1.0
* @date 2020-01-04
******************************************************************
*/
static DSTATUS spi_flash_disk_status(void)
sfud_flash_t flash = sfud_get_device(SFUD_GD25Q64C_DEVICE1_INDEX);
if(flash == NULL)
return STA_NOINIT;
uint8_t status;
sfud_read_status(flash, &status);
return (DSTATUS)status;
/**
******************************************************************
* @brief spi磁盘初始化
* @param [in]None
* @return 0 OK 1 Drive not initialized 2 No medium in the drive 4 Write protected
* @author aron566
* @version V1.0
* @date 2020-01-04
******************************************************************
*/
static DSTATUS spi_flash_disk_initialize(void)
sfud_flash_t flash = sfud_get_device(SFUD_GD25Q64C_DEVICE1_INDEX);
if(flash == NULL)
return STA_NOINIT;
sfud_err result = sfud_device_init(flash);
if(result != SFUD_SUCCESS)
return STA_NOINIT;
return 0;
/**
******************************************************************
* @brief spi磁盘读取指定扇区数的数据到缓冲区
* @param [out]buff 缓冲区
* @param [in]sector 起始扇区号
* @param [in]count 扇区数
* @return 0: Successful 1: R/W Error 2: Write Protected 3: Not Ready 4: Invalid Parameter
* @author aron566
* @version V1.0
* @date 2020-01-04
******************************************************************
*/
static DRESULT spi_flash_disk_read(BYTE *buff, LBA_t sector, UINT count)
sfud_flash_t flash = sfud_get_device(SFUD_GD25Q64C_DEVICE1_INDEX);
if(flash == NULL)
return RES_PARERR;
uint8_t status;
sfud_read_status(flash, &status);
sfud_err result = sfud_read(flash, sector * FF_MAX_SS, FF_MAX_SS * count, (uint8_t *)buff);
if(result != SFUD_SUCCESS)
return RES_ERROR;
return RES_OK;
/**
******************************************************************
* @brief spi磁盘写入数据到指定扇区数
* @param [in]buff
* @param [in]sector
* @param [in]count
* @return 0: Successful 1: R/W Error 2: Write Protected 3: Not Ready 4: Invalid Parameter
* @author aron566
* @version V1.0
* @date 2020-01-04
******************************************************************
*/
static DRESULT spi_flash_disk_write(const BYTE *buff, LBA_t sector, UINT count)
sfud_flash_t flash = sfud_get_device(SFUD_GD25Q64C_DEVICE1_INDEX);
if(flash == NULL)
return RES_PARERR;
uint8_t status;
sfud_read_status(flash, &status);
if(sfud_erase(flash, sector * FF_MAX_SS, FF_MAX_SS * count) != SFUD_SUCCESS)
return RES_ERROR;
sfud_read_status(flash, &status);
sfud_err result = sfud_write(flash, sector * FF_MAX_SS, FF_MAX_SS * count, (const uint8_t *)buff);
if(result != SFUD_SUCCESS)
return RES_ERROR;
return RES_OK;
/**
******************************************************************
* @brief spi磁盘特殊操作
* @param [in]cmd
* @param [in]buff
* @return 0: Successful 1: R/W Error 2: Write Protected 3: Not Ready 4: Invalid Parameter
* @author aron566
* @version V1.0
* @date 2020-01-04
******************************************************************
*/
static DRESULT spi_flash_disk_ioctl(BYTE cmd, void *buff)
//#define CTRL_SYNC 0 /* Complete pending write process (needed at FF_FS_READONLY == 0) */
//#define GET_SECTOR_COUNT 1 /* Get media size (needed at FF_USE_MKFS == 1) */
//#define GET_SECTOR_SIZE 2 /* Get sector size (needed at FF_MAX_SS != FF_MIN_SS) */
//#define GET_BLOCK_SIZE 3 /* Get erase block size (needed at FF_USE_MKFS == 1) */
//#define CTRL_TRIM 4 /* Inform device that the data on the block of sectors is no longer used (needed at FF_USE_TRIM == 1) */
switch(cmd)
case CTRL_SYNC:
return RES_OK;
case GET_SECTOR_COUNT:
*(DWORD*)buff = 4096 * 4;/**< PAGE SIZE:256,SECTOR SIZE:4KB,BLOCK SIZE:32/64KB,GD25Q64C TOTOAL SIZE:512*16KB*/
return RES_OK;
case GET_SECTOR_SIZE:
*(DWORD*)buff = FF_MAX_SS;/**< if use 512Byte then erase size is 2 PAGE SIZE, if use 4KB then erase size is 1 SECTOR SIZE.*/
return RES_OK;
case GET_BLOCK_SIZE:
*(DWORD*)buff = 1;/**< 擦除扇区的最小个数(1*512Byte = 2 PAGE SIZE),per 32K/64K block size to erase*/
return RES_OK;
case CTRL_TRIM:
return RES_PARERR;/**< 通知扇区数据不使用--未开启功能*/
default:
break;
return RES_PARERR;
/** Public application code --------------------------------------------------*/
/*******************************************************************************
*
* Public code
*
********************************************************************************
*/
/** Public application code --------------------------------------------------*/
/*******************************************************************************
*
* Public code
*
********************************************************************************
*/
/**
******************************************************************
* @brief 获取当前时间秒数
* @param [in]None
* @return s
* @author aron566
* @version V1.0
* @date 2020-01-04
******************************************************************
*/
DWORD disk_get_rtc_time_s(void)
return (DWORD)RTC_Port_Get_TimeStamp();
#ifdef __cplusplus ///<end extern c
#endif
/******************************** End of file *********************************/
disk_port.h
/**
* @file disk_port.h
*
* @date 2022年09月27日 11:20:15 星期二
*
* @author Copyright (c) 2022 aron566 <aron566@163.com>.
*
* @brief FatFs驱动接口.
*
* @version v1.0.0
*/
#ifndef _DISK_PORT_H
#define _DISK_PORT_H
/** Includes -----------------------------------------------------------------*/
#include <stdint.h> /**< need definition of uint8_t */
#include <stddef.h> /**< need definition of NULL */
#include <stdbool.h>/**< need definition of BOOL */
#include <stdio.h> /**< if need printf */
#include <stdlib.h>
#include <string.h>
// #include <limits.h> /**< need variable max value */
// #include <stdalign.h> /**< need alignof */
// #include <stdarg.h> /**< need va_start */
/** Private includes ---------------------------------------------------------*/
#include "ff.h"
#include "diskio.h"
/** Use C compiler -----------------------------------------------------------*/
#ifdef __cplusplus ///< use C compiler
extern "C"
#endif
/** Private defines ----------------------------------------------------------*/
/** Exported typedefines -----------------------------------------------------*/
/** Exported constants -------------------------------------------------------*/
/** Exported macros-----------------------------------------------------------*/
/** Exported variables -------------------------------------------------------*/
/** Exported functions prototypes --------------------------------------------*/
/* 磁盘状态读取 */
typedef DSTATUS(*pdisk_status_func)(void);
/* 磁盘初始化 */
typedef DSTATUS(*pdisk_initialize_func)(void);
/* 磁盘读取数据 */
typedef DRESULT(*pdisk_read_func)(
BYTE *buff, /* Data buffer to store read data */
LBA_t sector, /* Start sector in LBA */
UINT count /* Number of sectors to read */
);
/* 磁盘写入数据 */
typedef DRESULT (*pdisk_write_func)(
const BYTE *buff, /* Data to be written */
LBA_t sector, /* Start sector in LBA */
UINT count /* Number of sectors to write */
);
/* 磁盘控制 */
typedef DRESULT (*pdisk_ioctl_func)(
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
);
typedef struct disk_drv
pdisk_status_func get_disk_status_port;
pdisk_initialize_func disk_init_port;
pdisk_read_func disk_read_port;
pdisk_write_func disk_write_port;
pdisk_ioctl_func disk_ioctl_port;
DISK_DRV_FUNC_MAP_Typedef_t;
/** Exported constants -------------------------------------------------------*/
/** Exported macros-----------------------------------------------------------*/
/* 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 */
#define DEV_SPI_FLASH 3 /* Example: Map SPI flash to physical drive 3 */
#define DEV_TYPE_MAX (DEV_SPI_FLASH + 1)
/** Exported variables -------------------------------------------------------*/
extern DISK_DRV_FUNC_MAP_Typedef_t disk_drv_array[DEV_TYPE_MAX];/**< 磁盘设备驱动接口 */
// extern osMutexDef_t disk_mutex_array[DEV_TYPE_MAX];/**< 磁盘同步锁 */
/** Exported functions prototypes --------------------------------------------*/
/**
* @brief 获取RTC时间戳
*
* @return DWORD
*/
DWORD disk_get_rtc_time_s(void);
#ifdef __cplusplus ///<end extern c
#endif
#endif
/******************************** End of file *********************************/
diskio.c修改如下：
/*-----------------------------------------------------------------------*/
/* Low level disk I/O module SKELETON for FatFs (C)ChaN, 2019 */
/*-----------------------------------------------------------------------*/
/* If a working storage control module is available, it should be */
/* attached to the FatFs via a glue function rather than modifying it. */
/* This is an example of glue functions to attach various exsisting */
/* storage control modules to the FatFs module with a defined API. */
/*-----------------------------------------------------------------------*/
#include "ff.h" /* Obtains integer types */
#include "diskio.h" /* Declarations of disk functions */
#include "disk_port.h"
/* Definitions of physical drive number for each drive */
// #define DEV_RAM 0 /* Example: Map Ramdisk to physical drive 0 */
// #defi以上是关于USB MSC类存储设备的主要内容，如果未能解决你的问题，请参考以下文章
STM32CubeMX学习笔记（48）——USB接口使用（MSC基于外部Flash模拟U盘）
STM32CubeMX学习笔记（49）——USB接口使用（MSC基于SD卡模拟U盘）
STM32CubeMX学习笔记（47）——USB接口使用（MSC基于内部Flash模拟U盘）