stm32 HAL USB虚拟2个逻辑磁盘

程序员文章站 2022-06-19 09:17:57

最近学习了stm32 HAL 模拟U盘, 但是只能模拟一个逻辑磁盘, 我有一个spi flash, 有一个 sd卡, 我想都在电脑上显示但是发现很少有人来虚拟2个的,为此我借助特殊通道去看了下多逻辑磁盘的操作发现很多人只改这个STORAGE_LUN_NBR, 这样是不够的int8_t STORAGE_GetMaxLun_FS(void){ /* USER CODE BEGIN 8 */ return (STORAGE_LUN_NBR - 1); /* USER CODE .....

最近学习了stm32 HAL 模拟U盘, 但是只能模拟一个逻辑磁盘, 我有一个spi flash, 有一个 sd卡, 我想都在电脑上显示

但是发现很少有人来虚拟2个的,为此我借助特殊通道去看了下多逻辑磁盘的操作

发现很多人只改这个STORAGE_LUN_NBR, 这样是不够的

int8_t STORAGE_GetMaxLun_FS(void)
{
  /* USER CODE BEGIN 8 */
    return (STORAGE_LUN_NBR - 1);
  /* USER CODE END 8 */
}

还需要更改这个描述结构体, 才可以模拟出2个, 以此类推如果3个,就需要把宏定义和这个描述结构体更改了

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 */
		/* LUN 1*/
	  0x00,
    0x80,
    0x02,
    0x02,
    (STANDARD_INQUIRY_DATA_LEN - 5),
    0x00,
    0x00,
    0x00,
    'S', 'T', 'K', ' ', ' ', ' ', ' ', ' ', /* Manufacturer : 8 bytes */
    'P', 'r', 'o', 'd', '1', 'c', 't', ' ', /* Product      : 16 Bytes */
    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
    '0', '.', '0','1'
};

文章结尾附上我2个磁盘的代码

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : usbd_storage_if.c
  * @version        : v1.0_Cube
  * @brief          : Memory management layer.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2020 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 "usbd_storage_if.h"

/* USER CODE BEGIN INCLUDE */

#include "stdio.h"
#include "sdio.h"
#include "driver_spi_flash.h"
#include "bsp_driver_sd.h"

#define MMM_BLOCK_SIZE   4096
//#define USB_USE_SD
#define USB_USE_2_LUN
/* 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                  2
#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. */
#ifdef USB_USE_2_LUN
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 */
		/* LUN 1*/
	  0x00,
    0x80,
    0x02,
    0x02,
    (STANDARD_INQUIRY_DATA_LEN - 5),
    0x00,
    0x00,
    0x00,
    'S', 'T', 'K', ' ', ' ', ' ', ' ', ' ', /* Manufacturer : 8 bytes */
    'P', 'r', 'o', 'd', '1', 'c', 't', ' ', /* Product      : 16 Bytes */
    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
    '0', '.', '0','1'
};
#else 
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'
};
#endif
/* 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 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 */

#ifdef USB_USE_2_LUN
    if(lun==0) {
        *block_num  = hsd.SdCard.BlockNbr ;
        *block_size = hsd.SdCard.BlockSize;
    } else if(lun==1) {
        *block_num = SPI_FLASH_FATFS_SELECTOR_SIZE;
        *block_size = SPI_FLASH_BLOCK_SIZE;
    } else {
    }
#else
#ifdef USB_USE_SD
    *block_num  = hsd.SdCard.BlockNbr ;
    *block_size = hsd.SdCard.BlockSize;
#else
    *block_num = SPI_FLASH_FATFS_SELECTOR_SIZE;
    *block_size = SPI_FLASH_BLOCK_SIZE;
#endif
#endif

    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 */


		//printf("--- usb read lun -- :%d\r\n",lun);
#ifdef USB_USE_2_LUN
    if(lun==0) {
        if(HAL_OK != HAL_SD_ReadBlocks(&hsd,(uint8_t *)buf, blk_addr, blk_len, 1000))
            return USBD_FAIL ;
    } else if(lun==1) {
        SPI_FLASH_BufferRead(buf, blk_addr*MMM_BLOCK_SIZE, blk_len*MMM_BLOCK_SIZE);
    } else {
    }
#else
#ifdef USB_USE_SD
    if(HAL_OK != HAL_SD_ReadBlocks(&hsd,(uint8_t *)buf, blk_addr, blk_len, 1000))
        return USBD_FAIL ;
#else

    SPI_FLASH_BufferRead(buf, blk_addr*MMM_BLOCK_SIZE, blk_len*MMM_BLOCK_SIZE);
#endif
#endif
    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 */




#ifdef USB_USE_2_LUN
    if(lun==0) {
        if(HAL_OK != HAL_SD_WriteBlocks(&hsd, (uint8_t *)buf, blk_addr, blk_len, 1000))
            return USBD_FAIL ;
    } else if(lun==1) {
        SPI_FLASH_SectorErase(blk_addr*MMM_BLOCK_SIZE);
        SPI_FLASH_BufferWrite(buf,blk_addr*MMM_BLOCK_SIZE,blk_len*MMM_BLOCK_SIZE);
    } else {
    }
#else
#ifdef USB_USE_SD
    if(HAL_OK != HAL_SD_WriteBlocks(&hsd, (uint8_t *)buf, blk_addr, blk_len, 1000))
        return USBD_FAIL ;
#else
    SPI_FLASH_SectorErase(blk_addr*MMM_BLOCK_SIZE);
    SPI_FLASH_BufferWrite(buf,blk_addr*MMM_BLOCK_SIZE,blk_len*MMM_BLOCK_SIZE);
#endif
#endif
    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 */

/* USER CODE END PRIVATE_FUNCTIONS_IMPLEMENTATION */

/**
  * @}
  */

/**
  * @}
  */

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

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