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如何用wampp 做网站,广州网络推广,wordpress 没有权限,企业网站设计理念前言简简单单，将手中的单品集模拟成U盘，中间经历过很多坑，也算是摸索透了，记录一下开发，防止发生相同的问题。正文 1.选择芯片 2.正常配置调试和外部时钟（sys->serial wirte, rcc->hse->crys…

前言

简简单单，将手中的单品集模拟成U盘，中间经历过很多坑，也算是摸索透了，记录一下开发，防止发生相同的问题。

正文

1.选择芯片

2.正常配置调试和外部时钟（sys->serial wirte, rcc->hse->crystal）

3.打开usb

4.选择USB模式，packet = 1024，

5.配置时钟（打开USB会报错，关掉重新手动配置就好了）

6.生成工程

7.添加代码，只需要修改这一个文件就可以了，

8.参数含义

//这三个参数需要根据flash分配，整个flash除了程序外就是U盘大小

程序在0x08000000地址，但是存储不能从这个地址开始，需要后移0x5000(根据程序大小配置，不不能出现半个block的情况，整数就行了)

9.设置识别的参数，我重新定义了2个参数，也可以修改原来的大小。FLASH_PAGE_SIZE直接用就行

10.读取方法，这个让电脑可以读取U盘的相关信息，这个时候可以识别到U盘。用memcpy的方法，将目标内容复制到buf内

11.写入方法，网上都是直接使用memcpy复制的方法直接反向复制，但是我这会出现问题，在最后格式化U盘的时候会出现无法格式化U盘（怀疑是flash锁造成的）；我这里使用对内部flash的读写的方法

12.直接编译，下载到STM内，如果识别不到则重新插入电脑。

13.格式化U盘，然后就可以正常使用

代码

直接全部复制过来，不想自己手动敲（累）,就上面那几个地方，其他没变。

/* USER CODE BEGIN Header */
/********************************************************************************* @file           : usbd_storage_if.c* @version        : v2.0_Cube* @brief          : Memory management layer.******************************************************************************* @attention** <h2><center>&copy; Copyright (c) 2025 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 *//* 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                  0x10000
#define STORAGE_BLK_SIZ                  0x200/* USER CODE BEGIN PRIVATE_DEFINES */
#define  FLASH_START_ADDR                0x08005000
#define  FLASH_PAGE_NBR                  48/* 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 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;*block_num  = FLASH_PAGE_NBR;*block_size = FLASH_PAGE_SIZE;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 */if(lun == 0){memcpy(buf,(uint8_t *)(FLASH_START_ADDR +blk_addr*FLASH_PAGE_SIZE),blk_len*FLASH_PAGE_SIZE);return (USBD_OK);}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 */if(lun == 0){uint16_t i;HAL_FLASH_Unlock();FLASH_EraseInitTypeDef f;f.TypeErase = FLASH_TYPEERASE_PAGES;f.PageAddress = FLASH_START_ADDR + blk_addr*FLASH_PAGE_SIZE;f.NbPages = blk_len;uint32_t pageError = 0;HAL_FLASHEx_Erase(&f,&pageError);for(i=0;i<blk_len*FLASH_PAGE_SIZE;i+=4)HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD,FLASH_START_ADDR+blk_addr*FLASH_PAGE_SIZE+i,*(uint32_t *)(&buf[i]));HAL_FLASH_Lock();return USBD_OK;}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****/