[嵌入式][笔记]STM32基于HAL库的SDIO+FATFS文件系统

1、背景

? ? ? ? 要用到Bootloader升级，APP部分要写运行日志。所以在Bootloader部分的FATFS要做裁剪，裁剪到只剩只读的操作就可以了，而APP端做可读可写。

2、开发板

? ? ? ? 用的是野火的STM32F103VETx指南者

3、工具

? ? ? ? STM32CubeMx 和 Keil5

4、制作只读的FATFS文件系统

? ? ? ? 我用的是4线 Bit的配置，时钟尽量不要太高，我这里用了36分频，最终具体的频率要自己算一下。

?

然后配置FATFS，User-defined我建议是选上，对初学者的一次成功概率要更高一点。

????????要使能第二行的FS_READONLY的话，要让最后一行的FS_LOCK设置成0才能看到选项（这个是设置成只读的配置，其他的写啥的f_write，基本都不能用，为了省空间）

????????第二、三行我就不做解释，后面我会放个链接，你们可以看看大概是做什么的。

????????从CODE_PAGE开始，按照顺序，设置英文、使能栈的缓存，最大的LFN为64（默认是255,如果跟我一样设置为64，那么SD里面的文件名超过64字的长度的话，可能会出现f_open失败的情况，请按照个人情况设置）

STM32笔记之 Fatfs（文件系统移植）_夏沫的杂物间-CSDN博客写在前面：本文章旨在总结备份、方便以后查询，由于是个人总结，如有不对，欢迎指正；另外，内容大部分来自网络、书籍、和各类手册，如若侵权请告知，马上删帖致歉。一、介绍FatFs是用于小型嵌入式系统的通用 FAT / exFAT文件系统模块。FatFs模块是按照 ANSI C（C89）编写的，并且与磁盘 I / O层完全分开。因此，它独立于平台。它可以并入资源有限的小型微控制器中，例如8...https://blog.csdn.net/qq_42992084/article/details/105717906

FatFs模块功能配置选项_朱工的专栏-CSDN博客Fatfs模块的功能可以裁剪，通过配置宏定义实现，宏定义位于文件ffconf.h中。1.功能配置1.1 _FS_READONLY使能或禁用与写相关函数。当设置为只读(1)时，API函数f_write、f_sync、f_unlink、f_mkdir、f_chmod、f_rename、f_truncate、f_getfree。1.2 _FS_MINIMIZE函数功能裁剪。1.3 _USE_STRhttps://blog.csdn.net/zhzht19861011/article/details/52910541

????????这两个链接里面有涉及到FATFS的裁剪部分的说明，其实占空间最大的是这个选项，如果你选择了兼容汉字的话，我编译出来是190K左右，基本玩不了的。

还有一些其他的配置，基本都懂的

?

?最后的栈空间最好设置大一下，保证SDIO不会溢出

最后附上代码，有点长。如果你的CubeMx的设置跟我一样的话，可以直接复制。记得要勾上微库选项，以及printf的重定向。

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under Ultimate Liberty license
  * SLA0044, the "License"; You may not use this file except in compliance with
  * the License. You may obtain a copy of the License at:
  *                             www.st.com/SLA0044
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "fatfs.h"
#include "sdio.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdio.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
FATFS fs;													/* FatFs文件系统对象 */
FIL file;													/* 文件对象 */
FRESULT f_res;                    /* 文件操作结果 */
UINT fnum;            					  /* 文件成功读写数量 */
BYTE ReadBuffer[1024]={0};        /* 读缓冲区 */
BYTE WriteBuffer[]= "Welcome to the wildfire STM32 development board. Today is a good day to create new file system test files\r\n";

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
#define DBGPRINTF printf
/**
  * @brief  打印输出信息
  * @param  无
  * @retval 无
  */
 void printf_fatfs_error(FRESULT fresult)
{
  switch(fresult)
  {
    case FR_OK:
      DBGPRINTF("!!The operation was successful.\r\n");
    break;
    case FR_DISK_ERR:
    	DBGPRINTF("!!Hardware I / O driver error.\r\n");
    break;
    case FR_INT_ERR:
    	DBGPRINTF("!!Assertion error.\r\n");
    break;
    case FR_NOT_READY:
    	DBGPRINTF("!!The physical device is not working.\r\n");
    break;
    case FR_NO_FILE:
    	DBGPRINTF("!!Unable to find file.\r\n");
    break;
    case FR_NO_PATH:
    	DBGPRINTF("!!The path could not be found.\r\n");
    break;
    case FR_INVALID_NAME:
    	DBGPRINTF("!!Invalid pathname.\r\n");
    break;
    case FR_DENIED:
    case FR_EXIST:
    	DBGPRINTF("!!Access denied.\r\n");
    break;
    case FR_INVALID_OBJECT:
    	DBGPRINTF("!!Invalid file or path.\r\n");
    break;
    case FR_WRITE_PROTECTED:
    	DBGPRINTF("!!Logical device write protection.\r\n");
    break;
    case FR_INVALID_DRIVE:
    	DBGPRINTF("!!Invalid logical device.\r\n");
    break;
    case FR_NOT_ENABLED:
    	DBGPRINTF("!!Invalid workspace.\r\n");
    break;
    case FR_NO_FILESYSTEM:
    	DBGPRINTF("!!Invalid file system.\r\n");
    break;
    case FR_MKFS_ABORTED:
    	DBGPRINTF("!!Fmkfs function operation failed due to function parameter problem.\r\n");
    break;
    case FR_TIMEOUT:
    	DBGPRINTF("!!The operation timed out.\r\n");
    break;
    case FR_LOCKED:
    	DBGPRINTF("!!The file is protected.\r\n");
    break;
    case FR_NOT_ENOUGH_CORE:
    	DBGPRINTF("!!Long file name support failed to get heap space.\r\n");
    break;
    case FR_TOO_MANY_OPEN_FILES:
    	DBGPRINTF("!!Too many files open.\r\n");
    break;
    case FR_INVALID_PARAMETER:
    	DBGPRINTF("!!Invalid parameter.\r\n");
    break;
  }
}
/* USER CODE END PM */

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

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_SDIO_SD_Init();
  MX_USART1_UART_Init();
  MX_FATFS_Init();
  /* USER CODE BEGIN 2 */
 
  DBGPRINTF("\r\r\n****** This is a SD card file system experiment ******\r\n");
 
  	 // 注册一个FatFS设备：SD卡 //
    if(FATFS_LinkDriver(&SD_Driver, SDPath) == 0)
    {
      //在SD卡挂载文件系统，文件系统挂载时会对SD卡初始化
      f_res = f_mount(&fs,(TCHAR const*)SDPath,1);
      printf_fatfs_error(f_res);
      //----------------------- 格式化测试 ---------------------------//
      // 如果没有文件系统就格式化创建创建文件系统 */
      if(f_res!=FR_OK)
      {
        DBGPRINTF("The SD card failed to mount the file system.(%d)\r\n",f_res);
        printf_fatfs_error(f_res);
        while(1);
      }
      else
      {
        DBGPRINTF("The file system is mounted successfully and can be read and written\r\n");
      }
 
      //------------------- 文件系统测试：读测试 ------------------------------------//
      DBGPRINTF("****** File read test is about to take place... ******\r\n");
      f_res = f_open(&file, "FatFsRWFiles.txt", FA_OPEN_EXISTING | FA_READ);
	  printf_fatfs_error(f_res);
      if(f_res == FR_OK)
      {
        DBGPRINTF("File opened successfully.\r\n");
        f_res = f_read(&file, ReadBuffer, sizeof(ReadBuffer), &fnum);
        if(f_res==FR_OK)
        {
          DBGPRINTF("File read successfully, read byte data: %d\r\n",fnum);
          DBGPRINTF("The obtained file data are as follows:\r\n%s \r\n", ReadBuffer);
        }
        else
        {
          DBGPRINTF("File read failure:(%d)\r\n",f_res);
        }
      }
      else
      {
        DBGPRINTF("Failed to open file.\r\n");
      }
      // 不再读写，关闭文件 //
      f_close(&file);
 
      // 不再使用，取消挂载 //
      f_res = f_mount(NULL,(TCHAR const*)SDPath,1);
    }
    // 注销一个FatFS设备：SD卡 //
    FATFS_UnLinkDriver(SDPath);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

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

?如果没有玩过linux/windows开发的话，这里可以更改你想读SD里面的哪个文件。当然前提是，你SD里面有这个文件才行。

需要注意的是，里面的并非是字符，而是十六进制，可以看到最后的0d 0a 00是不是很熟悉，不就是\r\n吗。?

5、制作可读可写的FATFS文件系统

在上面的基础上，只需要更改FATFS部分的配置即可。

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under Ultimate Liberty license
  * SLA0044, the "License"; You may not use this file except in compliance with
  * the License. You may obtain a copy of the License at:
  *                             www.st.com/SLA0044
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "fatfs.h"
#include "sdio.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdio.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
FATFS fs;													/* FatFs文件系统对象 */
FIL file;													/* 文件对象 */
FRESULT f_res;                    /* 文件操作结果 */
UINT fnum;            					  /* 文件成功读写数量 */
BYTE ReadBuffer[1024]={0};        /* 读缓冲区 */
BYTE WriteBuffer[]= "Welcome to the wildfire STM32 development board. Today is a good day to create new file system test files\r\n";
#define DBGPRINTF printf
 void printf_fatfs_error(FRESULT fresult)
{
  switch(fresult)
  {
    case FR_OK:
      DBGPRINTF("!!The operation was successful.\r\n");
    break;
    case FR_DISK_ERR:
    	DBGPRINTF("!!Hardware I / O driver error.\r\n");
    break;
    case FR_INT_ERR:
    	DBGPRINTF("!!Assertion error.\r\n");
    break;
    case FR_NOT_READY:
    	DBGPRINTF("!!The physical device is not working.\r\n");
    break;
    case FR_NO_FILE:
    	DBGPRINTF("!!Unable to find file.\r\n");
    break;
    case FR_NO_PATH:
    	DBGPRINTF("!!The path could not be found.\r\n");
    break;
    case FR_INVALID_NAME:
    	DBGPRINTF("!!Invalid pathname.\r\n");
    break;
    case FR_DENIED:
    case FR_EXIST:
    	DBGPRINTF("!!Access denied.\r\n");
    break;
    case FR_INVALID_OBJECT:
    	DBGPRINTF("!!Invalid file or path.\r\n");
    break;
    case FR_WRITE_PROTECTED:
    	DBGPRINTF("!!Logical device write protection.\r\n");
    break;
    case FR_INVALID_DRIVE:
    	DBGPRINTF("!!Invalid logical device.\r\n");
    break;
    case FR_NOT_ENABLED:
    	DBGPRINTF("!!Invalid workspace.\r\n");
    break;
    case FR_NO_FILESYSTEM:
    	DBGPRINTF("!!Invalid file system.\r\n");
    break;
    case FR_MKFS_ABORTED:
    	DBGPRINTF("!!Fmkfs function operation failed due to function parameter problem.\r\n");
    break;
    case FR_TIMEOUT:
    	DBGPRINTF("!!The operation timed out.\r\n");
    break;
    case FR_LOCKED:
    	DBGPRINTF("!!The file is protected.\r\n");
    break;
    case FR_NOT_ENOUGH_CORE:
    	DBGPRINTF("!!Long file name support failed to get heap space.\r\n");
    break;
    case FR_TOO_MANY_OPEN_FILES:
    	DBGPRINTF("!!Too many files open.\r\n");
    break;
    case FR_INVALID_PARAMETER:
    	DBGPRINTF("!!Invalid parameter.\r\n");
    break;
  }
}
/* USER CODE END PM */

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

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_SDIO_SD_Init();
  MX_USART1_UART_Init();
  MX_FATFS_Init();
  /* USER CODE BEGIN 2 */
 
  DBGPRINTF("\r\r\n****** This is a SD card file system experiment ******\r\n");
 
  	 // 注册一个FatFS设备：SD卡 //
    if(FATFS_LinkDriver(&SD_Driver, SDPath) == 0)
    {
      //在SD卡挂载文件系统，文件系统挂载时会对SD卡初始化
      f_res = f_mount(&fs,(TCHAR const*)SDPath,1);
      printf_fatfs_error(f_res);
      //----------------------- 格式化测试 ---------------------------//
      // 如果没有文件系统就格式化创建创建文件系统 */
   if(f_res == FR_NO_FILESYSTEM)
      {
        DBGPRINTF("The SD card does not have a file system yet and will be formatted...\r\n");
        // 格式化 //
        f_res=f_mkfs((TCHAR const*)SDPath,0,0);
 
        if(f_res == FR_OK)
        {
          DBGPRINTF("The SD card has successfully formatted the file system\r\n");
          // 格式化后，先取消挂载 //
          f_res = f_mount(NULL,(TCHAR const*)SDPath,1);
          // 重新挂载	//
          f_res = f_mount(&fs,(TCHAR const*)SDPath,1);
        }
        else
        {
          DBGPRINTF("Format failed\r\n");
          while(1);
        }
      }
      else if(f_res!=FR_OK)
      {
        DBGPRINTF("The SD card failed to mount the file system.(%d)\r\n",f_res);
        printf_fatfs_error(f_res);
        while(1);
      }
      else
      {
        DBGPRINTF("The file system is mounted successfully and can be read and written\r\n");
      }
 
      //----------------------- 文件系统测试：写测试 -----------------------------//
      // 打开文件，如果文件不存在则创建它 //
      DBGPRINTF("****** A file write test will be performed... ******\r\n");
      f_res = f_open(&file, "unit_sd_rw_test.txt",FA_CREATE_ALWAYS | FA_WRITE );
      if ( f_res == FR_OK )
      {
        DBGPRINTF("Open / create FatFs read / write test file. TXT file successfully, write data to the file.\r\n");
        // 将指定存储区内容写入到文件内 //
        f_res=f_write(&file,WriteBuffer,sizeof(WriteBuffer),&fnum);
        if(f_res==FR_OK)
        {
          DBGPRINTF("File write success, write byte data:%d\r\n",fnum);
          DBGPRINTF("The data written to the file is: \r\n%s\r\n",WriteBuffer);
        }
        else
        {
          DBGPRINTF(" File write failure:(%d)\r\n",f_res);
        }
        // 不再读写，关闭文件 //
        f_close(&file);
      }
      else
      {
        DBGPRINTF("Failed to open / create file.\r\n");
      }
 
      //------------------- 文件系统测试：读测试 ------------------------------------//
      DBGPRINTF("****** File read test is about to take place... ******\r\n");
      f_res = f_open(&file, "unit_sd_rw_test.txt", FA_OPEN_EXISTING | FA_READ);
      if(f_res == FR_OK)
      {
        DBGPRINTF("File opened successfully.\r\n");
        f_res = f_read(&file, ReadBuffer, sizeof(ReadBuffer), &fnum);
        if(f_res==FR_OK)
        {
          DBGPRINTF("File read successfully, read byte data: %d\r\n",fnum);
          DBGPRINTF("The obtained file data are as follows:\r\n%s \r\n", ReadBuffer);
        }
        else
        {
          DBGPRINTF("File read failure:(%d)\r\n",f_res);
        }
      }
      else
      {
        DBGPRINTF("Failed to open file.\r\n");
      }
      // 不再读写，关闭文件 //
      f_close(&file);
 
      // 不再使用，取消挂载 //
      f_res = f_mount(NULL,(TCHAR const*)SDPath,1);
    }
    // 注销一个FatFS设备：SD卡 //
    FATFS_UnLinkDriver(SDPath);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

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

只要你没有去选择兼容汉字的选项，基本上这个文件系统不会太大。只读和可读可写，在占用空间上相差并不会太大，但MCU上的空间是金子呀【笑哭】。FATFS的选项可能有点选的不太合适，发现的可以在评论区补充一下，

就介绍到这里了！！！有问题可以私聊或在评论区留言