STM32H7 SDMMC+FATFS+USBMSC+FREERTOS 虚拟U盘

通过cubemx配置 实现STM32H7 SDMMC+FATFS+USBMSC+FREERTOS 虚拟U盘

1.实验目的

1.使用FAFTS文件操作系统，实现STM32虚拟U盘，读写外部SD卡，fatfs和usb mass storage class共存。
2.请先完成上一个帖子的步骤 --> 跳转https://blog.csdn.net/hjn0618/article/details/130383593

2.实验平台

硬件平台：正点原子阿波罗 STM32H734IIT6
开发工具：STM32CubeIDE 1.12.0
HAL库：STM32Cube FW_H7 V1.11.0

3.CubeMX配置

(1)增加栈空间

(2)配置FATFS
设置USE_LFN到STACK，防止文件名称过长，使FREERTOS内存溢出

(2)开启FREERTOS
开启FreeRTOS后，USB_Device初始化函数再默认任务中，所以要增加默认的堆栈，
另外需要注意的是，开始FreeRTOS后，fatfs操作函数也必须在任务中，如f_mount等。

4.代码部分

重写usbd_storage_if.c，因为加入了FreeRTOS，fatfs对sd卡读写用的是发送消息机制，所以usbd_storage_if.c里的读写不能再去调用bsp_driver_sd.c里的读写方法了，大家有兴趣的可以对比一下有无FreeRTOS，bsp_driver_sd.c源码的内容

/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file           : usbd_storage_if.c
 * @version        : v1.0_Cube
 * @brief          : Memory management layer.
 ******************************************************************************
 * @attention
 *
 * Copyright (c) 2023 STMicroelectronics.
 * All rights reserved.
 *
 * This software is licensed under terms that can be found in the LICENSE file
 * in the root directory of this software component.
 * If no LICENSE file comes with this software, it is provided AS-IS.
 *
 ******************************************************************************
 */
/* USER CODE END Header */

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

/* USER CODE BEGIN INCLUDE */
#include "fatfs.h"
#include "stdio.h"
/* USER CODE END INCLUDE */

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

/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
extern SD_HandleTypeDef hsd1;
/* 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                  0x10000
#define STORAGE_BLK_SIZ                  0x200

/* USER CODE BEGIN PRIVATE_DEFINES */

/* 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);

/* 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 the storage unit (medium) over USB FS IP
  * @param  lun: Logical unit number.
  * @retval USBD_OK if all operations are OK else USBD_FAIL
  */
int8_t STORAGE_Init_FS(uint8_t lun)
{
  /* USER CODE BEGIN 2 */
	UNUSED(lun);
	return USBD_OK;
  /* USER CODE END 2 */
}

/**
  * @brief  Returns the medium capacity.
  * @param  lun: Logical unit number.
  * @param  block_num: Number of total block number.
  * @param  block_size: 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 */
	int8_t ret = -1;
	HAL_SD_CardInfoTypeDef info;
	ret = HAL_SD_GetCardInfo(&hsd1, &info);
	*block_num = info.LogBlockNbr - 1;
	*block_size = info.LogBlockSize;
	return ret;
  /* USER CODE END 3 */
}

/**
  * @brief   Checks whether the medium is ready.
  * @param  lun:  Logical unit number.
  * @retval USBD_OK if all operations are OK else USBD_FAIL
  */
int8_t STORAGE_IsReady_FS(uint8_t lun)
{
  /* USER CODE BEGIN 4 */
	int8_t ret = -1;
	UNUSED(lun);
	if (HAL_SD_GetCardState(&hsd1) == HAL_SD_CARD_TRANSFER)
		ret = 0;
	return ret;
  /* USER CODE END 4 */
}

/**
  * @brief  Checks whether the medium is write protected.
  * @param  lun: Logical unit number.
  * @retval USBD_OK if all operations are OK else USBD_FAIL
  */
int8_t STORAGE_IsWriteProtected_FS(uint8_t lun)
{
  /* USER CODE BEGIN 5 */
	UNUSED(lun);

	return (USBD_OK);
  /* USER CODE END 5 */
}

/**
  * @brief  Reads data from the medium.
  * @param  lun: Logical unit number.
  * @param  buf: data buffer.
  * @param  blk_addr: Logical block address.
  * @param  blk_len: Blocks number.
  * @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 */
	int8_t ret = USBD_FAIL;
	uint32_t timer;
	if (HAL_SD_ReadBlocks_DMA(&hsd1, buf, blk_addr, blk_len) == HAL_OK) {
		ret = USBD_OK;
	}

	if (USBD_OK == ret) {
		timer = osKernelSysTick();
		while (HAL_SD_GetState(&hsd1) == HAL_SD_STATE_BUSY) {
			if (osKernelSysTick() - timer > 30 * 1000) {
				return USBD_FAIL;
			}
		};
		timer = osKernelSysTick();
		while (HAL_SD_GetCardState(&hsd1) != HAL_SD_CARD_TRANSFER) {
			if (osKernelSysTick() - timer > 30 * 1000) {
				return USBD_FAIL;
			}
		};
	}
	return USBD_OK;
  /* USER CODE END 6 */
}

/**
  * @brief  Writes data into the medium.
  * @param  lun: Logical unit number.
  * @param  buf: data buffer.
  * @param  blk_addr: Logical block address.
  * @param  blk_len: Blocks number.
  * @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 */
	int8_t ret = USBD_FAIL;
	uint32_t timer;
	if (HAL_SD_WriteBlocks_DMA(&hsd1, buf, blk_addr, blk_len) == HAL_OK) {
		ret = USBD_OK;
	}
	if (USBD_OK == ret) {
		timer = osKernelSysTick();
		while (HAL_SD_GetState(&hsd1) == HAL_SD_STATE_BUSY) {
			if (osKernelSysTick() - timer > 30 * 1000) {
				return USBD_FAIL;
			}
		};
		timer = osKernelSysTick();
		while (HAL_SD_GetCardState(&hsd1) != HAL_SD_CARD_TRANSFER) {
			if (osKernelSysTick() - timer > 30 * 1000) {
				return USBD_FAIL;
			}
		};
	}

	return USBD_OK;
  /* USER CODE END 7 */
}

/**
  * @brief  Returns the Max Supported LUNs.
  * @param  None
  * @retval Lun(s) number.
  */
int8_t STORAGE_GetMaxLun_FS(void)
{
  /* USER CODE BEGIN 8 */
	HAL_SD_CardInfoTypeDef info;
	HAL_SD_GetCardInfo(&hsd1, &info);

	if (info.LogBlockNbr)
		return STORAGE_LUN_NBR - 1;
	else
		return STORAGE_LUN_NBR - 2;

  /* USER CODE END 8 */
}

/* USER CODE BEGIN PRIVATE_FUNCTIONS_IMPLEMENTATION */

/* USER CODE END PRIVATE_FUNCTIONS_IMPLEMENTATION */

/**
  * @}
  */

/**
  * @}
  */

sd_diskio.c增加两个函数，用作usb msc时关闭消息，做文件管理接收消息

/* USER CODE BEGIN ErrorAbortCallbacks */
/*
 ==============================================================================================
 depending on the SD_HAL_Driver version, either the HAL_SD_ErrorCallback() or HAL_SD_AbortCallback()
 or both could be defined, activate the callbacks below when suitable and needed
 ==============================================================================================
 void BSP_SD_AbortCallback(void)
 {
 }

 void BSP_SD_ErrorCallback(void)
 {
 }
 */
/* USER CODE END ErrorAbortCallbacks */

/* USER CODE BEGIN lastSection */
/* can be used to modify / undefine previous code or add new code */
void SD_Delet_Queue(void) {
	osMessageDelete(SDQueueID);
}

void SD_Create_Queue(void) {
	osMessageQDef(SD_Queue, QUEUE_SIZE, uint16_t);
	SDQueueID = osMessageCreate(osMessageQ(SD_Queue), NULL);
}
/* USER CODE END lastSection */

通过中断来判断usb连接状态

/**
  * @brief This function handles USB On The Go FS global interrupt.
  */
void OTG_FS_IRQHandler(void)
{
  /* USER CODE BEGIN OTG_FS_IRQn 0 */
  /* USER CODE END OTG_FS_IRQn 0 */
  HAL_PCD_IRQHandler(&hpcd_USB_OTG_FS);
  /* USER CODE BEGIN OTG_FS_IRQn 1 */
  FILE_MGT_USB_CHECK(); // 自定义的函数
  /* USER CODE END OTG_FS_IRQn 1 */
}

USB连接状态检测任务
注意：该任务的优先级要高于默认任务的优先级，原因是先要执行HAL_SD_Init(&hsd1)，才能开启USB_MSC,在STORAGE_Init_FS我没有调用HAL_SD_Init(&hsd1)，HAL_SD_Init(&hsd1)已经在fatfs中调用了。

static void FILE_MGT_USB_CHECK_TASK(const void *arg) {
	uint8_t dev_state = 0;
	osEvent event;
	FatFs_Check();
	for (;;) {

		event = osMessageGet(usbStateQueueHandle, osWaitForever);
		if (event.status == osEventMessage) {
			osMutexWait(sdFreeMutexHandle, osWaitForever);
			printf("hUsbDeviceFS:%d\n", (uint8_t) event.value.v);
			if ((uint8_t) event.value.v == USBD_STATE_ADDRESSED) {
				dev_state = USBD_STATE_ADDRESSED;
			} else if ((dev_state == USBD_STATE_ADDRESSED)
					&& ((uint8_t) event.value.v == USBD_STATE_CONFIGURED)) {
				Set_SD_WriteOrRead(0);
				printf("usb connect\n");
			} else {
				dev_state = 0;
				Set_SD_WriteOrRead(1);
				printf("usb disconnect\n");
			}
			osMutexRelease(sdFreeMutexHandle);
		}

	}
}

文件操作测试任务

static void FILE_MGT_SD_TEST_TASK(const void *arg) {
	osDelay(500);
	for (;;) {
		osDelay(500);
		osMutexWait(sdFreeMutexHandle, osWaitForever);
		if (SDCard_EN) {
			FatFs_FileTest();
		} else {
			printf("禁止使用SD卡\n");
		}
		osMutexRelease(sdFreeMutexHandle);

	}
}

以上两个任务是互斥的，为了是检测USB连接状态时，等待fatfs文件操作完成后再禁用fatfs文件操作系统。

// 使能/禁止SD卡读写 1允许 0禁止
static void Set_SD_WriteOrRead(uint8_t en) {
	if (en == 1) {
		SD_Create_Queue();
		SDCard_EN = 1;
	} else {
		SD_Delet_Queue();
		SDCard_EN = 0;
	}
}

5.实验效果

插入USB后，禁用文件操作系统

拔出USB后，使能文件操作系统

6.源码下载

https://download.csdn.net/download/hjn0618/87751815文章来源地址https://www.toymoban.com/news/detail-684629.html

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