STM32FF103CBT6内部FLASH模拟U盘求助(HAL库)

1万 · 2018-4-22 11:32

各位，好：

最近想通过内部FLASH模拟U盘实现用户程序升级，使用的是STM32CubeMX创建的工程，目前连接PC时可以显示U盘，提示需要格式化U盘；
但是U盘格式化一直不成功，不知道哪位是否研究过，或者可以帮忙看下是什么原因导致无法格式化。
代码如下所示：
/**
  ******************************************************************************
  * @file          : usbd_storage_if.c
  * @version       : v2.0_Cube
  * @brief       : Memory management layer.
  ******************************************************************************
  * This notice applies to any and all portions of this file
  * that are not between comment pairs USER CODE BEGIN and
  * USER CODE END. Other portions of this file, whether
  * inserted by the user or by software development tools
  * are owned by their respective copyright owners.
  *
  * Copyright (c) 2018 STMicroelectronics International N.V.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted, provided that the following conditions are met:
  *
  * 1. Redistribution of source code must retain the above copyright notice,
  * this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright notice,
  * this list of conditions and the following disclaimer in the documentation
  * and/or other materials provided with the distribution.
  * 3. Neither the name of STMicroelectronics nor the names of other
  * contributors to this software may be used to endorse or promote products
  * derived from this software without specific written permission.
  * 4. This software, including modifications and/or derivative works of this
  * software, must execute solely and exclusively on microcontroller or
  * microprocessor devices manufactured by or for STMicroelectronics.
  * 5. Redistribution and use of this software other than as permitted under
  * this license is void and will automatically terminate your rights under
  * this license.
  *
  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "usbd_storage_if.h"

/* USER CODE BEGIN INCLUDE */

/* USER CODE END INCLUDE */

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/

/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/

/* USER CODE END PV */

/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
  * @brief Usb device.
  * @{
  */

/** @defgroup USBD_STORAGE
  * @brief Usb mass storage device module
  * @{
  */

/** @defgroup USBD_STORAGE_Private_TypesDefinitions
  * @brief Private types.
  * @{
  */

/* USER CODE BEGIN PRIVATE_TYPES */

/* USER CODE END PRIVATE_TYPES */

/**
  * @}
  */

/** @defgroup USBD_STORAGE_Private_Defines
  * @brief Private defines.
  * @{
  */

#define STORAGE_LUN_NBR                   1
#define STORAGE_BLK_NBR                   0x40
#define STORAGE_BLK_SIZ                   0x200

/* USER CODE BEGIN PRIVATE_DEFINES */
#define FLASH_START_ADDR 0x08008000
#define FLASH_SIZE 0x8000
/* USER CODE END PRIVATE_DEFINES */

/**
  * @}
  */

/** @defgroup USBD_STORAGE_Private_Macros
  * @brief Private macros.
  * @{
  */

/* USER CODE BEGIN PRIVATE_MACRO */

/* USER CODE END PRIVATE_MACRO */

/**
  * @}
  */

/** @defgroup USBD_STORAGE_Private_Variables
  * @brief Private variables.
  * @{
  */

/* USER CODE BEGIN INQUIRY_DATA_FS */
/** USB Mass storage Standard Inquiry Data. */
const int8_t STORAGE_Inquirydata_FS[] = {/* 36 */

/* LUN 0 */
0x00,
0x80,
0x02,
0x02,
(STANDARD_INQUIRY_DATA_LEN - 5),
0x00,
0x00,
0x00,
'S', 'T', 'M', ' ', ' ', ' ', ' ', ' ', /* Manufacturer : 8 bytes */
'P', 'r', 'o', 'd', 'u', 'c', 't', ' ', /* Product    : 16 Bytes */
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
'0', '.', '0' ,'1'                   /* Version    : 4 Bytes */
};
/* USER CODE END INQUIRY_DATA_FS */

/* USER CODE BEGIN PRIVATE_VARIABLES */

/* USER CODE END PRIVATE_VARIABLES */

/**
  * @}
  */

/** @defgroup USBD_STORAGE_Exported_Variables
  * @brief Public variables.
  * @{
  */

extern USBD_HandleTypeDef hUsbDeviceFS;

/* USER CODE BEGIN EXPORTED_VARIABLES */

/* USER CODE END EXPORTED_VARIABLES */

/**
  * @}
  */

/** @defgroup USBD_STORAGE_Private_FunctionPrototypes
  * @brief Private functions declaration.
  * @{
  */

static int8_t STORAGE_Init_FS(uint8_t lun);
static int8_t STORAGE_GetCapacity_FS(uint8_t lun, uint32_t *block_num, uint16_t *block_size);
static int8_t STORAGE_IsReady_FS(uint8_t lun);
static int8_t STORAGE_IsWriteProtected_FS(uint8_t lun);
static int8_t STORAGE_Read_FS(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len);
static int8_t STORAGE_Write_FS(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len);
static int8_t STORAGE_GetMaxLun_FS(void);

void STFlash_ReadBuffer(uint32_t blk_addr, uint8_t *buf, uint16_t blk_len);
void STFlash_WriteBuffer(uint32_t blk_addr, uint8_t *buf, uint16_t blk_len);

/* USER CODE BEGIN PRIVATE_FUNCTIONS_DECLARATION */

/* USER CODE END PRIVATE_FUNCTIONS_DECLARATION */

/**
  * @}
  */

USBD_StorageTypeDef USBD_Storage_Interface_fops_FS =
{
STORAGE_Init_FS,
STORAGE_GetCapacity_FS,
STORAGE_IsReady_FS,
STORAGE_IsWriteProtected_FS,
STORAGE_Read_FS,
STORAGE_Write_FS,
STORAGE_GetMaxLun_FS,
(int8_t *)STORAGE_Inquirydata_FS
};

/* Private functions ---------------------------------------------------------*/
/**
  * @brief  Initializes over USB FS IP
  * @param  lun:
  * @retval USBD_OK if all operations are OK else USBD_FAIL
  */
int8_t STORAGE_Init_FS(uint8_t lun)
{
/* USER CODE BEGIN 2 */
return (USBD_OK);
/* USER CODE END 2 */
}

/**
  * @brief  .
  * @param  lun: .
  * @param  block_num: .
  * @param  block_size: .
  * @retval USBD_OK if all operations are OK else USBD_FAIL
  */
int8_t STORAGE_GetCapacity_FS(uint8_t lun, uint32_t *block_num, uint16_t *block_size)
{
/* USER CODE BEGIN 3 */
*block_num  = STORAGE_BLK_NBR;
*block_size = STORAGE_BLK_SIZ;
return (USBD_OK);
/* USER CODE END 3 */
}

/**
  * @brief  .
  * @param  lun: .
  * @retval USBD_OK if all operations are OK else USBD_FAIL
  */
int8_t STORAGE_IsReady_FS(uint8_t lun)
{
/* USER CODE BEGIN 4 */
return (USBD_OK);
/* USER CODE END 4 */
}

/**
  * @brief  .
  * @param  lun: .
  * @retval USBD_OK if all operations are OK else USBD_FAIL
  */
int8_t STORAGE_IsWriteProtected_FS(uint8_t lun)
{
/* USER CODE BEGIN 5 */
return (USBD_OK);
/* USER CODE END 5 */
}

/**
  * @brief  .
  * @param  lun: .
  * @retval USBD_OK if all operations are OK else USBD_FAIL
  */
int8_t STORAGE_Read_FS(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len)
{
/* USER CODE BEGIN 6 */
STFlash_ReadBuffer(blk_addr, buf, blk_len);
return (USBD_OK);
/* USER CODE END 6 */
}

/**
  * @brief  .
  * @param  lun: .
  * @retval USBD_OK if all operations are OK else USBD_FAIL
  */
int8_t STORAGE_Write_FS(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len)
{
/* USER CODE BEGIN 7 */
STFlash_WriteBuffer(blk_addr, buf, blk_len);
return (USBD_OK);
/* USER CODE END 7 */
}

/**
  * @brief  .
  * @param  None
  * @retval .
  */
int8_t STORAGE_GetMaxLun_FS(void)
{
/* USER CODE BEGIN 8 */
return (STORAGE_LUN_NBR - 1);
/* USER CODE END 8 */
}

/* USER CODE BEGIN PRIVATE_FUNCTIONS_IMPLEMENTATION */
//uint32_t ulFlashData;
//uint32_t ulFlashAddr;
//uint32_t i,j,n;
void STFlash_ReadBuffer(uint32_t blk_addr, uint8_t *buf, uint16_t blk_len)
{
uint32_t ulFlashData = 0;
uint32_t ulFlashAddr = FLASH_START_ADDR + blk_addr*STORAGE_BLK_SIZ;
uint32_t i,j,n = 0;
if((blk_addr + blk_len)*STORAGE_BLK_SIZ < FLASH_SIZE)
{
for(i=0; i<blk_len; i++)
{
for(j=0; j<STORAGE_BLK_SIZ; j+=4)
{
ulFlashData = *(volatile unsigned int*)(ulFlashAddr);
buf[n++] = (uint8_t)(ulFlashData >> 0);
buf[n++] = (uint8_t)(ulFlashData >> 8);
buf[n++] = (uint8_t)(ulFlashData >> 16);
buf[n++] = (uint8_t)(ulFlashData >> 24);
ulFlashAddr += 4;
}
}
}
}

volatile uint8_t iMemory[FLASH_PAGE_SIZE];
volatile uint8_t eMemory[STORAGE_BLK_SIZ];
void STFlash_WriteBuffer(uint32_t blk_addr, uint8_t *buf, uint16_t blk_len)
{
uint32_t ulFlashData = 0;
uint32_t ulFlashAddr = 0;
uint32_t secpos; // 扇区地址
uint16_t secoff; // 扇区内偏移地址

if((blk_addr+blk_len)*STORAGE_BLK_SIZ >= FLASH_SIZE)
{
return;
}
//uint32_t ulFlashData = 0;
//uint32_t ulFlashAddr = 0;
ulFlashData = 0;
ulFlashAddr = 0;
uint32_t i, j;
for(i=0; i<STORAGE_BLK_SIZ; i++)
{
eMemory = buf;
if(eMemory[0] == 0xEB && eMemory[1] == 0x3C)
{
ulFlashData = 0;
ulFlashAddr = 0;
}
}
// FLASH_PAGE_SIZE
for(i=0; i<blk_len; i++)
{
secpos = (blk_addr + i) / 2;
secoff = (blk_addr + i) % 2;
STFlash_ReadBuffer(secpos, (uint8_t*)&iMemory[0], 4);
for(j=0; j<STORAGE_BLK_SIZ; j++)
{
if(iMemory[j+secoff*STORAGE_BLK_SIZ] != 0xFF)
break;
}
HAL_FLASH_Unlock();
if(j < STORAGE_BLK_SIZ)
{
/* Clear all FLASH flags */
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPERR);
if(secpos >= 32)
{
ulFlashData = 0;
ulFlashAddr = 0;
}
uint32_t PageError = 0;
FLASH_EraseInitTypeDef pEraseInit;
pEraseInit.TypeErase = FLASH_TYPEERASE_PAGES;
pEraseInit.PageAddress = FLASH_START_ADDR + secpos*FLASH_PAGE_SIZE;
pEraseInit.Banks = FLASH_BANK_1;
pEraseInit.NbPages = 1;
HAL_FLASHEx_Erase(&pEraseInit, &PageError);
for(j=0; j<STORAGE_BLK_SIZ; j++)
{
iMemory[j + secoff*STORAGE_BLK_SIZ] = buf[j + i*STORAGE_BLK_SIZ];
}
ulFlashAddr = FLASH_START_ADDR + secpos*FLASH_PAGE_SIZE;
for(j=0; j<FLASH_PAGE_SIZE; j+=4)
{
ulFlashData  = (uint32_t)iMemory[j + 3] << 24;
ulFlashData += (uint32_t)iMemory[j + 2] << 16;
ulFlashData += (uint32_t)iMemory[j + 1] << 8;
ulFlashData += (uint32_t)iMemory[j + 0] << 0;
HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, ulFlashAddr, ulFlashData);
ulFlashAddr += 4;
}
}
else
{
for(j=0; j<STORAGE_BLK_SIZ; j++)
{
iMemory[j + secoff*STORAGE_BLK_SIZ] = buf[j + i*STORAGE_BLK_SIZ];
}
ulFlashAddr = FLASH_START_ADDR + secpos*FLASH_PAGE_SIZE + secoff*STORAGE_BLK_SIZ;
for(j=0; j<STORAGE_BLK_SIZ; j+=4)
{
ulFlashData  = (uint32_t)iMemory[j + secoff*STORAGE_BLK_SIZ + 3] << 24;
ulFlashData += (uint32_t)iMemory[j + secoff*STORAGE_BLK_SIZ + 2] << 16;
ulFlashData += (uint32_t)iMemory[j + secoff*STORAGE_BLK_SIZ + 1] << 8;
ulFlashData += (uint32_t)iMemory[j + secoff*STORAGE_BLK_SIZ + 0] << 0;
HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, ulFlashAddr, ulFlashData);
ulFlashAddr += 4;
}
}
HAL_FLASH_Lock();
}
}
/* USER CODE END PRIVATE_FUNCTIONS_IMPLEMENTATION */

/**
  * @}
  */

/**
  * @}
  */

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

工程文件如下所示：
STM32F103CBT6_DRIVER_MSC.zip (13.87 MB)

2018-4-22 11:32 上传
点击文件名下载附件

3万 · 2018-4-22 12:47

只看该作者 · 2018-4-22 18:30

本帖最后由 gyh974 于 2018-4-22 18:35 编辑

模拟U盘可以直接把FAT的MBK内容做成一个表，这样就不用每次上电都要格式化才能用，另外不能格式化跟STFlash_ReadBuffer函数有关，请问你这样读FLASH内容有何用意呢？这个函数是你自己写的还是自动生成的？

1万 · 2018-4-22 20:55

gyh974 发表于 2018-4-22 18:30
模拟U盘可以直接把FAT的MBK内容做成一个表，这样就不用每次上电都要格式化才能用，另外不能格式化跟STFlash ...

首先谢谢你的恢复。
内部FLASH的读写函数都是需要自己写的；你说的FAT的MDK内容表我知道是可以提前生产的，DEVICE插上PC后可以成功模拟U盘，但是没法成功往U盘内拷贝等文件功能，感觉应该是FLASH的读写函数有问题，但是现在自己确实没法找出自己写的FLASH有什么问题，所以想发到网上寻求网友的帮助，解决下。

只看该作者 · 2018-4-23 10:21

你这个BLK_NBR 太小了,不够建文件系统的

1万 · 2018-4-23 11:51

huzi2099 发表于 2018-4-23 10:21
你这个BLK_NBR 太小了,不够建文件系统的

大小是没有问题的，STM32F407VET6芯片内部64KB/RAM就试过模拟U盘，STM32F103CBT6内部RAM没有那么大，但是内部FLASH大小是够的，最低试过40KB的RAM就可以

1万 · 2018-4-23 11:51

huzi2099 发表于 2018-4-23 10:21
你这个BLK_NBR 太小了,不够建文件系统的

大小是没有问题的，STM32F407VET6芯片内部64KB/RAM就试过模拟U盘，STM32F103CBT6内部RAM没有那么大，但是内部FLASH大小是够的，最低试过40KB的RAM就可以

只看该作者 · 2018-4-23 16:46

可能是字节顺序不对吧,按理说你函数全都返回OK是不会失败的,你在确认一下第一扇区是否正确

只看该作者 · 2018-4-23 16:47

yklstudent 发表于 2018-4-23 11:51
大小是没有问题的，STM32F407VET6芯片内部64KB/RAM就试过模拟U盘，STM32F103CBT6内部RAM没有那么大，但是 ...

你这个是32K,那么小做U盘有一半会浪费掉

1万 · 2018-4-24 14:48

huzi2099 发表于 2018-4-23 16:46
可能是字节顺序不对吧,按理说你函数全都返回OK是不会失败的,你在确认一下第一扇区是否正确 ...

格式化提示失败，查看U盘第一扇区，数据确实有问题
现在主要卡在这里了，不知道什么原因导致的

1万 · 2018-4-24 14:48

huzi2099 发表于 2018-4-23 16:46
可能是字节顺序不对吧,按理说你函数全都返回OK是不会失败的,你在确认一下第一扇区是否正确 ...

格式化提示失败，查看U盘第一扇区，数据确实有问题
现在主要卡在这里了，不知道什么原因导致的

只看该作者 · 2018-4-24 17:17

不能格式化说明你的读写有问题，内部的flash 很简单的，现成的例子，你用的芯片看看每个页面操作是1KB 还是2KB，然后做好写函数，就OK了。

只看该作者 · 2018-4-24 17:36

自己建表，不用格式化，接电脑后自动就识别为U盘，用FAT16文件系统，我刚刚做完一个这样的项目，还顺便解决了win10下的一些问题

只看该作者 · 2018-4-24 22:46

beyond696 发表于 2018-4-24 17:36
自己建表，不用格式化，接电脑后自动就识别为U盘，用FAT16文件系统，我刚刚做完一个这样的项目，还顺便解决 ...

那你发一下啊,不知道你fat表有多大

1万 · 2018-4-25 09:09

huzi2099 发表于 2018-4-24 22:46
那你发一下啊,不知道你fat表有多大

0xEB,0x3C,0x90,0x4D,0x53,0x44,0x4F,0x53,0x35,0x2E,0x30,0x00,0x02,0x01,0x06,0x00,
0x02,0x00,0x02,0x50,0x00,0xF8,0x01,0x00,0x01,0x00,0x01,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x80,0x00,0x29,0x85,0x76,0xED,0x06,0x4E,0x4F,0x20,0x4E,0x41,
0x4D,0x45,0x20,0x20,0x20,0x20,0x46,0x41,0x54,0x31,0x32,0x20,0x20,0x20,0x33,0xC9,
0x8E,0xD1,0xBC,0xF0,0x7B,0x8E,0xD9,0xB8,0x00,0x20,0x8E,0xC0,0xFC,0xBD,0x00,0x7C,
0x38,0x4E,0x24,0x7D,0x24,0x8B,0xC1,0x99,0xE8,0x3C,0x01,0x72,0x1C,0x83,0xEB,0x3A,
0x66,0xA1,0x1C,0x7C,0x26,0x66,0x3B,0x07,0x26,0x8A,0x57,0xFC,0x75,0x06,0x80,0xCA,
0x02,0x88,0x56,0x02,0x80,0xC3,0x10,0x73,0xEB,0x33,0xC9,0x8A,0x46,0x10,0x98,0xF7,
0x66,0x16,0x03,0x46,0x1C,0x13,0x56,0x1E,0x03,0x46,0x0E,0x13,0xD1,0x8B,0x76,0x11,
0x60,0x89,0x46,0xFC,0x89,0x56,0xFE,0xB8,0x20,0x00,0xF7,0xE6,0x8B,0x5E,0x0B,0x03,
0xC3,0x48,0xF7,0xF3,0x01,0x46,0xFC,0x11,0x4E,0xFE,0x61,0xBF,0x00,0x00,0xE8,0xE6,
0x00,0x72,0x39,0x26,0x38,0x2D,0x74,0x17,0x60,0xB1,0x0B,0xBE,0xA1,0x7D,0xF3,0xA6,
0x61,0x74,0x32,0x4E,0x74,0x09,0x83,0xC7,0x20,0x3B,0xFB,0x72,0xE6,0xEB,0xDC,0xA0,
0xFB,0x7D,0xB4,0x7D,0x8B,0xF0,0xAC,0x98,0x40,0x74,0x0C,0x48,0x74,0x13,0xB4,0x0E,
0xBB,0x07,0x00,0xCD,0x10,0xEB,0xEF,0xA0,0xFD,0x7D,0xEB,0xE6,0xA0,0xFC,0x7D,0xEB,
0xE1,0xCD,0x16,0xCD,0x19,0x26,0x8B,0x55,0x1A,0x52,0xB0,0x01,0xBB,0x00,0x00,0xE8,
0x3B,0x00,0x72,0xE8,0x5B,0x8A,0x56,0x24,0xBE,0x0B,0x7C,0x8B,0xFC,0xC7,0x46,0xF0,
0x3D,0x7D,0xC7,0x46,0xF4,0x29,0x7D,0x8C,0xD9,0x89,0x4E,0xF2,0x89,0x4E,0xF6,0xC6,
0x06,0x96,0x7D,0xCB,0xEA,0x03,0x00,0x00,0x20,0x0F,0xB6,0xC8,0x66,0x8B,0x46,0xF8,
0x66,0x03,0x46,0x1C,0x66,0x8B,0xD0,0x66,0xC1,0xEA,0x10,0xEB,0x5E,0x0F,0xB6,0xC8,
0x4A,0x4A,0x8A,0x46,0x0D,0x32,0xE4,0xF7,0xE2,0x03,0x46,0xFC,0x13,0x56,0xFE,0xEB,
0x4A,0x52,0x50,0x06,0x53,0x6A,0x01,0x6A,0x10,0x91,0x8B,0x46,0x18,0x96,0x92,0x33,
0xD2,0xF7,0xF6,0x91,0xF7,0xF6,0x42,0x87,0xCA,0xF7,0x76,0x1A,0x8A,0xF2,0x8A,0xE8,
0xC0,0xCC,0x02,0x0A,0xCC,0xB8,0x01,0x02,0x80,0x7E,0x02,0x0E,0x75,0x04,0xB4,0x42,
0x8B,0xF4,0x8A,0x56,0x24,0xCD,0x13,0x61,0x61,0x72,0x0B,0x40,0x75,0x01,0x42,0x03,
0x5E,0x0B,0x49,0x75,0x06,0xF8,0xC3,0x41,0xBB,0x00,0x00,0x60,0x66,0x6A,0x00,0xEB,
0xB0,0x42,0x4F,0x4F,0x54,0x4D,0x47,0x52,0x20,0x20,0x20,0x20,0x0D,0x0A,0x52,0x65,
0x6D,0x6F,0x76,0x65,0x20,0x64,0x69,0x73,0x6B,0x73,0x20,0x6F,0x72,0x20,0x6F,0x74,
0x68,0x65,0x72,0x20,0x6D,0x65,0x64,0x69,0x61,0x2E,0xFF,0x0D,0x0A,0x44,0x69,0x73,
0x6B,0x20,0x65,0x72,0x72,0x6F,0x72,0xFF,0x0D,0x0A,0x50,0x72,0x65,0x73,0x73,0x20,
0x61,0x6E,0x79,0x20,0x6B,0x65,0x79,0x20,0x74,0x6F,0x20,0x72,0x65,0x73,0x74,0x61,
0x72,0x74,0x0D,0x0A,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xAC,0xCB,0xD8,0x55,0xAA,
这个就是自己定义的FAT表，128K的

只看该作者 · 2018-4-25 09:44

yklstudent 发表于 2018-4-25 09:09
0xEB,0x3C,0x90,0x4D,0x53,0x44,0x4F,0x53,0x35,0x2E,0x30,0x00,0x02,0x01,0x06,0x00,
0x02,0x00,0x02,0 ...

我的只有2048字节

只看该作者 · 2018-4-25 10:51

本帖最后由 huzi2099 于 2018-4-25 11:56 编辑

yklstudent 发表于 2018-4-25 09:09
0xEB,0x3C,0x90,0x4D,0x53,0x44,0x4F,0x53,0x35,0x2E,0x30,0x00,0x02,0x01,0x06,0x00,
0x02,0x00,0x02,0 ...

保留1个扇区和1个fat表也行吧,总共是20480字节

不过有个麻烦的地方,就是stm32的flash不能单独扇区擦

1万 · 2018-4-25 20:48

huzi2099 发表于 2018-4-25 10:51
保留1个扇区和1个fat表也行吧,总共是20480字节

不过有个麻烦的地方,就是stm32的flash不能单独扇区擦

是的，所以写数据前，需要确定所写扇区所在的FLASH区块，读出整个区块的数据，然后在更新数据，最后把数据写到FLASH内；
思路过程就是这样的，但是现在测试结果有问题；感觉应该是读写函数存在问题，但是看不出自己写的有啥问题

只看该作者 · 2018-5-25 20:13

yklstudent 发表于 2018-4-25 09:09
0xEB,0x3C,0x90,0x4D,0x53,0x44,0x4F,0x53,0x35,0x2E,0x30,0x00,0x02,0x01,0x06,0x00,
0x02,0x00,0x02,0 ...

0xEB, 0x3C, 0x90, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x08, 0x01, 0x00,
0x01, 0x00, 0x01, 0x80, 0x10, 0xF8, 0x02, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x29, 0x00, 0x00, 0x00, 0x00, 0x4E, 0x4F, 0x20, 0x4E, 0x41,
0x4D, 0x45, 0x20, 0x20, 0x20, 0x20, 0x46, 0x41, 0x54, 0x31, 0x32, 0x20, 0x20, 0x20, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xAA,

0xF8, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00

弄了一个更小的,一个引导扇区,2个扇区的FAT表,1个fat表,每簇8扇区,根目录要占一个簇,一共是11个扇区

1万 · 2018-5-26 20:45

huzi2099 发表于 2018-5-25 20:13
0xEB, 0x3C, 0x90, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x08, 0x01, 0x00,
...

你测试过有效，能解决我提的问题?

STM32FF103CBT6内部FLASH模拟U盘求助(HAL库)

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