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							- /* USER CODE BEGIN Header */
 
- /**
 
-   ******************************************************************************
 
-   * @file           : usbd_desc.c
 
-   * @version        : v1.0_Cube
 
-   * @brief          : This file implements the USB device descriptors.
 
-   ******************************************************************************
 
-   * @attention
 
-   *
 
-   * <h2><center>© 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 "usbd_core.h"
 
- #include "usbd_desc.h"
 
- #include "usbd_conf.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
 
-   * @{
 
-   */
 
- /** @addtogroup USBD_DESC
 
-   * @{
 
-   */
 
- /** @defgroup USBD_DESC_Private_TypesDefinitions USBD_DESC_Private_TypesDefinitions
 
-   * @brief Private types.
 
-   * @{
 
-   */
 
- /* USER CODE BEGIN PRIVATE_TYPES */
 
- /* USER CODE END PRIVATE_TYPES */
 
- /**
 
-   * @}
 
-   */
 
- /** @defgroup USBD_DESC_Private_Defines USBD_DESC_Private_Defines
 
-   * @brief Private defines.
 
-   * @{
 
-   */
 
- #define USBD_VID     1155
 
- #define USBD_LANGID_STRING     1033
 
- #define USBD_MANUFACTURER_STRING     "STMicroelectronics"
 
- #define USBD_PID_HS     22314
 
- #define USBD_PRODUCT_STRING_HS     "STM32 Mass Storage"
 
- #define USBD_CONFIGURATION_STRING_HS     "MSC Config"
 
- #define USBD_INTERFACE_STRING_HS     "MSC Interface"
 
- #define USBD_PID_FS     22314
 
- #define USBD_PRODUCT_STRING_FS     "STM32 Mass Storage"
 
- #define USBD_CONFIGURATION_STRING_FS     "MSC Config"
 
- #define USBD_INTERFACE_STRING_FS     "MSC Interface"
 
- #define USB_SIZ_BOS_DESC            0x0C
 
- /* USER CODE BEGIN PRIVATE_DEFINES */
 
- /* USER CODE END PRIVATE_DEFINES */
 
- /**
 
-   * @}
 
-   */
 
- /* USER CODE BEGIN 0 */
 
- /* USER CODE END 0 */
 
- /** @defgroup USBD_DESC_Private_Macros USBD_DESC_Private_Macros
 
-   * @brief Private macros.
 
-   * @{
 
-   */
 
- /* USER CODE BEGIN PRIVATE_MACRO */
 
- /* USER CODE END PRIVATE_MACRO */
 
- /**
 
-   * @}
 
-   */
 
-   
 
- /** @defgroup USBD_DESC_Private_FunctionPrototypes USBD_DESC_Private_FunctionPrototypes
 
-   * @brief Private functions declaration.
 
-   * @{
 
-   */
 
-   
 
- static void Get_SerialNum(void);
 
- static void IntToUnicode(uint32_t value, uint8_t * pbuf, uint8_t len);
 
-   
 
- /**
 
-   * @}
 
-   */  
 
-   
 
- /** @defgroup USBD_DESC_Private_FunctionPrototypes USBD_DESC_Private_FunctionPrototypes
 
-   * @brief Private functions declaration for FS.
 
-   * @{
 
-   */
 
- uint8_t * USBD_FS_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- uint8_t * USBD_FS_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- uint8_t * USBD_FS_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- uint8_t * USBD_FS_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- uint8_t * USBD_FS_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- uint8_t * USBD_FS_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- uint8_t * USBD_FS_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- #if (USBD_LPM_ENABLED == 1)
 
- uint8_t * USBD_FS_USR_BOSDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- #endif /* (USBD_LPM_ENABLED == 1) */
 
- /**
 
-   * @}
 
-   */
 
- /** @defgroup USBD_DESC_Private_Variables USBD_DESC_Private_Variables
 
-   * @brief Private variables.
 
-   * @{
 
-   */
 
- USBD_DescriptorsTypeDef FS_Desc =
 
- {
 
-   USBD_FS_DeviceDescriptor
 
- , USBD_FS_LangIDStrDescriptor
 
- , USBD_FS_ManufacturerStrDescriptor
 
- , USBD_FS_ProductStrDescriptor
 
- , USBD_FS_SerialStrDescriptor
 
- , USBD_FS_ConfigStrDescriptor
 
- , USBD_FS_InterfaceStrDescriptor
 
- #if (USBD_LPM_ENABLED == 1)
 
- , USBD_FS_USR_BOSDescriptor
 
- #endif /* (USBD_LPM_ENABLED == 1) */
 
- };
 
- #if defined ( __ICCARM__ ) /* IAR Compiler */
 
-   #pragma data_alignment=4
 
- #endif /* defined ( __ICCARM__ ) */
 
- /** USB standard device descriptor. */
 
- __ALIGN_BEGIN uint8_t USBD_FS_DeviceDesc[USB_LEN_DEV_DESC] __ALIGN_END =
 
- {
 
-   0x12,                       /*bLength */
 
-   USB_DESC_TYPE_DEVICE,       /*bDescriptorType*/
 
- #if (USBD_LPM_ENABLED == 1)
 
-   0x01,                       /*bcdUSB */ /* changed to USB version 2.01
 
-                                              in order to support LPM L1 suspend
 
-                                              resume test of USBCV3.0*/
 
- #else
 
-   0x00,                       /*bcdUSB */
 
- #endif /* (USBD_LPM_ENABLED == 1) */
 
-   0x02,
 
-   0x00,                       /*bDeviceClass*/
 
-   0x00,                       /*bDeviceSubClass*/
 
-   0x00,                       /*bDeviceProtocol*/
 
-   USB_MAX_EP0_SIZE,           /*bMaxPacketSize*/
 
-   LOBYTE(USBD_VID),           /*idVendor*/
 
-   HIBYTE(USBD_VID),           /*idVendor*/
 
-   LOBYTE(USBD_PID_FS),        /*idProduct*/
 
-   HIBYTE(USBD_PID_FS),        /*idProduct*/
 
-   0x00,                       /*bcdDevice rel. 2.00*/
 
-   0x02,
 
-   USBD_IDX_MFC_STR,           /*Index of manufacturer  string*/
 
-   USBD_IDX_PRODUCT_STR,       /*Index of product string*/
 
-   USBD_IDX_SERIAL_STR,        /*Index of serial number string*/
 
-   USBD_MAX_NUM_CONFIGURATION  /*bNumConfigurations*/
 
- };
 
- /* USB_DeviceDescriptor */
 
- /** BOS descriptor. */
 
- #if (USBD_LPM_ENABLED == 1)
 
- #if defined ( __ICCARM__ ) /* IAR Compiler */
 
-   #pragma data_alignment=4
 
- #endif /* defined ( __ICCARM__ ) */
 
- __ALIGN_BEGIN uint8_t USBD_FS_BOSDesc[USB_SIZ_BOS_DESC] __ALIGN_END =
 
- {
 
-   0x5,
 
-   USB_DESC_TYPE_BOS,
 
-   0xC,
 
-   0x0,
 
-   0x1,  /* 1 device capability*/
 
-         /* device capability*/
 
-   0x7,
 
-   USB_DEVICE_CAPABITY_TYPE,
 
-   0x2,
 
-   0x2,  /* LPM capability bit set*/
 
-   0x0,
 
-   0x0,
 
-   0x0
 
- };
 
- #endif /* (USBD_LPM_ENABLED == 1) */
 
- /**
 
-   * @}
 
-   */
 
- /** @defgroup USBD_DESC_Private_FunctionPrototypes USBD_DESC_Private_FunctionPrototypes
 
-   * @brief Private functions declaration for HS.
 
-   * @{
 
-   */
 
- uint8_t * USBD_HS_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- uint8_t * USBD_HS_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- uint8_t * USBD_HS_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- uint8_t * USBD_HS_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- uint8_t * USBD_HS_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- uint8_t * USBD_HS_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- uint8_t * USBD_HS_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- #if (USBD_LPM_ENABLED == 1)
 
- uint8_t * USBD_HS_USR_BOSDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
 
- #endif /* (USBD_LPM_ENABLED == 1) */
 
- /**
 
-   * @}
 
-   */
 
- /** @defgroup USBD_DESC_Private_Variables USBD_DESC_Private_Variables
 
-   * @brief Private variables.
 
-   * @{
 
-   */
 
- USBD_DescriptorsTypeDef HS_Desc =
 
- {
 
-   USBD_HS_DeviceDescriptor
 
- , USBD_HS_LangIDStrDescriptor
 
- , USBD_HS_ManufacturerStrDescriptor
 
- , USBD_HS_ProductStrDescriptor
 
- , USBD_HS_SerialStrDescriptor
 
- , USBD_HS_ConfigStrDescriptor
 
- , USBD_HS_InterfaceStrDescriptor
 
- #if (USBD_LPM_ENABLED == 1)
 
- , USBD_HS_USR_BOSDescriptor
 
- #endif /* (USBD_LPM_ENABLED == 1) */
 
- };
 
- #if defined ( __ICCARM__ ) /* IAR Compiler */
 
-   #pragma data_alignment=4
 
- #endif /* defined ( __ICCARM__ ) */
 
- /** USB standard device descriptor. */
 
- __ALIGN_BEGIN uint8_t USBD_HS_DeviceDesc[USB_LEN_DEV_DESC] __ALIGN_END =
 
- {
 
-   0x12,                       /*bLength */
 
-   USB_DESC_TYPE_DEVICE,       /*bDescriptorType*/
 
- #if (USBD_LPM_ENABLED == 1)
 
-   0x01,                       /*bcdUSB */ /* changed to USB version 2.01
 
-                                              in order to support LPM L1 suspend
 
-                                              resume test of USBCV3.0*/
 
- #else
 
-   0x00,                       /*bcdUSB */
 
- #endif /* (USBD_LPM_ENABLED == 1) */
 
-   0x02,
 
-   0x00,                       /*bDeviceClass*/
 
-   0x00,                       /*bDeviceSubClass*/
 
-   0x00,                       /*bDeviceProtocol*/
 
-   USB_MAX_EP0_SIZE,           /*bMaxPacketSize*/
 
-   LOBYTE(USBD_VID),           /*idVendor*/
 
-   HIBYTE(USBD_VID),           /*idVendor*/
 
-   LOBYTE(USBD_PID_HS),        /*idProduct*/
 
-   HIBYTE(USBD_PID_HS),        /*idProduct*/
 
-   0x00,                       /*bcdDevice rel. 2.00*/
 
-   0x02,
 
-   USBD_IDX_MFC_STR,           /*Index of manufacturer  string*/
 
-   USBD_IDX_PRODUCT_STR,       /*Index of product string*/
 
-   USBD_IDX_SERIAL_STR,        /*Index of serial number string*/
 
-   USBD_MAX_NUM_CONFIGURATION  /*bNumConfigurations*/
 
- };
 
- /** BOS descriptor. */
 
- #if (USBD_LPM_ENABLED == 1)
 
- #if defined ( __ICCARM__ ) /* IAR Compiler */
 
-   #pragma data_alignment=4
 
- #endif /* defined ( __ICCARM__ ) */
 
- __ALIGN_BEGIN uint8_t USBD_HS_BOSDesc[USB_SIZ_BOS_DESC] __ALIGN_END =
 
- {
 
-   0x5,
 
-   USB_DESC_TYPE_BOS,
 
-   0xC,
 
-   0x0,
 
-   0x1,  /* 1 device capability */
 
-         /* device capability */
 
-   0x7,
 
-   USB_DEVICE_CAPABITY_TYPE,
 
-   0x2,
 
-   0x2,  /*LPM capability bit set */
 
-   0x0,
 
-   0x0,
 
-   0x0
 
- };
 
- #endif /* (USBD_LPM_ENABLED == 1) */
 
- /**
 
-   * @}
 
-   */
 
- /** @defgroup USBD_DESC_Private_Variables USBD_DESC_Private_Variables
 
-   * @brief Private variables.
 
-   * @{
 
-   */
 
- #if defined ( __ICCARM__ ) /* IAR Compiler */
 
-   #pragma data_alignment=4
 
- #endif /* defined ( __ICCARM__ ) */
 
- /** USB lang indentifier descriptor. */
 
- __ALIGN_BEGIN uint8_t USBD_LangIDDesc[USB_LEN_LANGID_STR_DESC] __ALIGN_END =
 
- {
 
-      USB_LEN_LANGID_STR_DESC,
 
-      USB_DESC_TYPE_STRING,
 
-      LOBYTE(USBD_LANGID_STRING),
 
-      HIBYTE(USBD_LANGID_STRING)
 
- };
 
- #if defined ( __ICCARM__ ) /* IAR Compiler */
 
-   #pragma data_alignment=4
 
- #endif /* defined ( __ICCARM__ ) */
 
- /* Internal string descriptor. */
 
- __ALIGN_BEGIN uint8_t USBD_StrDesc[USBD_MAX_STR_DESC_SIZ] __ALIGN_END;
 
- #if defined ( __ICCARM__ ) /*!< IAR Compiler */
 
-   #pragma data_alignment=4   
 
- #endif
 
- __ALIGN_BEGIN uint8_t USBD_StringSerial[USB_SIZ_STRING_SERIAL] __ALIGN_END = {
 
-   USB_SIZ_STRING_SERIAL,
 
-   USB_DESC_TYPE_STRING,
 
- };
 
- /**
 
-   * @}
 
-   */
 
- /** @defgroup USBD_DESC_Private_Functions USBD_DESC_Private_Functions
 
-   * @brief Private functions.
 
-   * @{
 
-   */
 
- /**
 
-   * @brief  Return the device descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_HS_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   UNUSED(speed);
 
-   *length = sizeof(USBD_HS_DeviceDesc);
 
-   return USBD_HS_DeviceDesc;
 
- }
 
- /**
 
-   * @brief  Return the LangID string descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_HS_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   UNUSED(speed);
 
-   *length = sizeof(USBD_LangIDDesc);
 
-   return USBD_LangIDDesc;
 
- }
 
- /**
 
-   * @brief  Return the product string descriptor
 
-   * @param  speed : current device speed
 
-   * @param  length : pointer to data length variable
 
-   * @retval pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_HS_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   if(speed == 0)
 
-   {
 
-     USBD_GetString((uint8_t *)USBD_PRODUCT_STRING_HS, USBD_StrDesc, length);
 
-   }
 
-   else
 
-   {
 
-     USBD_GetString((uint8_t *)USBD_PRODUCT_STRING_HS, USBD_StrDesc, length);
 
-   }
 
-   return USBD_StrDesc;
 
- }
 
- /**
 
-   * @brief  Return the manufacturer string descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_HS_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   UNUSED(speed);
 
-   USBD_GetString((uint8_t *)USBD_MANUFACTURER_STRING, USBD_StrDesc, length);
 
-   return USBD_StrDesc;
 
- }
 
- /**
 
-   * @brief  Return the serial number string descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_HS_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   UNUSED(speed);
 
-   *length = USB_SIZ_STRING_SERIAL;
 
-   /* Update the serial number string descriptor with the data from the unique
 
-    * ID */
 
-   Get_SerialNum();
 
-   /* USER CODE BEGIN USBD_HS_SerialStrDescriptor */
 
-   
 
-   /* USER CODE END USBD_HS_SerialStrDescriptor */
 
-   return (uint8_t *) USBD_StringSerial;
 
- }
 
- /**
 
-   * @brief  Return the configuration string descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_HS_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   if(speed == USBD_SPEED_HIGH)
 
-   {
 
-     USBD_GetString((uint8_t *)USBD_CONFIGURATION_STRING_HS, USBD_StrDesc, length);
 
-   }
 
-   else
 
-   {
 
-     USBD_GetString((uint8_t *)USBD_CONFIGURATION_STRING_HS, USBD_StrDesc, length);
 
-   }
 
-   return USBD_StrDesc;
 
- }
 
- /**
 
-   * @brief  Return the interface string descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_HS_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   if(speed == 0)
 
-   {
 
-     USBD_GetString((uint8_t *)USBD_INTERFACE_STRING_HS, USBD_StrDesc, length);
 
-   }
 
-   else
 
-   {
 
-     USBD_GetString((uint8_t *)USBD_INTERFACE_STRING_HS, USBD_StrDesc, length);
 
-   }
 
-   return USBD_StrDesc;
 
- }
 
- #if (USBD_LPM_ENABLED == 1)
 
- /**
 
-   * @brief  Return the BOS descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_HS_USR_BOSDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   UNUSED(speed);
 
-   *length = sizeof(USBD_HS_BOSDesc);
 
-   return (uint8_t*)USBD_HS_BOSDesc;
 
- }
 
- #endif /* (USBD_LPM_ENABLED == 1) */
 
- /**
 
-   * @brief  Return the device descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_FS_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   UNUSED(speed);
 
-   *length = sizeof(USBD_FS_DeviceDesc);
 
-   return USBD_FS_DeviceDesc;
 
- }
 
- /**
 
-   * @brief  Return the LangID string descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_FS_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   UNUSED(speed);
 
-   *length = sizeof(USBD_LangIDDesc);
 
-   return USBD_LangIDDesc;
 
- }
 
- /**
 
-   * @brief  Return the product string descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_FS_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   if(speed == 0)
 
-   {
 
-     USBD_GetString((uint8_t *)USBD_PRODUCT_STRING_FS, USBD_StrDesc, length);
 
-   }
 
-   else
 
-   {
 
-     USBD_GetString((uint8_t *)USBD_PRODUCT_STRING_FS, USBD_StrDesc, length);
 
-   }
 
-   return USBD_StrDesc;
 
- }
 
- /**
 
-   * @brief  Return the manufacturer string descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_FS_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   UNUSED(speed);
 
-   USBD_GetString((uint8_t *)USBD_MANUFACTURER_STRING, USBD_StrDesc, length);
 
-   return USBD_StrDesc;
 
- }
 
- /**
 
-   * @brief  Return the serial number string descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_FS_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   UNUSED(speed);
 
-   *length = USB_SIZ_STRING_SERIAL;
 
-   /* Update the serial number string descriptor with the data from the unique
 
-    * ID */
 
-   Get_SerialNum();
 
-   /* USER CODE BEGIN USBD_FS_SerialStrDescriptor */
 
-   
 
-   /* USER CODE END USBD_FS_SerialStrDescriptor */
 
-   return (uint8_t *) USBD_StringSerial;
 
- }
 
- /**
 
-   * @brief  Return the configuration string descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_FS_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   if(speed == USBD_SPEED_HIGH)
 
-   {
 
-     USBD_GetString((uint8_t *)USBD_CONFIGURATION_STRING_FS, USBD_StrDesc, length);
 
-   }
 
-   else
 
-   {
 
-     USBD_GetString((uint8_t *)USBD_CONFIGURATION_STRING_FS, USBD_StrDesc, length);
 
-   }
 
-   return USBD_StrDesc;
 
- }
 
- /**
 
-   * @brief  Return the interface string descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_FS_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   if(speed == 0)
 
-   {
 
-     USBD_GetString((uint8_t *)USBD_INTERFACE_STRING_FS, USBD_StrDesc, length);
 
-   }
 
-   else
 
-   {
 
-     USBD_GetString((uint8_t *)USBD_INTERFACE_STRING_FS, USBD_StrDesc, length);
 
-   }
 
-   return USBD_StrDesc;
 
- }
 
- #if (USBD_LPM_ENABLED == 1)
 
- /**
 
-   * @brief  Return the BOS descriptor
 
-   * @param  speed : Current device speed
 
-   * @param  length : Pointer to data length variable
 
-   * @retval Pointer to descriptor buffer
 
-   */
 
- uint8_t * USBD_FS_USR_BOSDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
 
- {
 
-   UNUSED(speed);
 
-   *length = sizeof(USBD_FS_BOSDesc);
 
-   return (uint8_t*)USBD_FS_BOSDesc;
 
- }
 
- #endif /* (USBD_LPM_ENABLED == 1) */
 
- /**
 
-   * @brief  Create the serial number string descriptor 
 
-   * @param  None 
 
-   * @retval None
 
-   */
 
- static void Get_SerialNum(void)
 
- {
 
-   uint32_t deviceserial0, deviceserial1, deviceserial2;
 
-   deviceserial0 = *(uint32_t *) DEVICE_ID1;
 
-   deviceserial1 = *(uint32_t *) DEVICE_ID2;
 
-   deviceserial2 = *(uint32_t *) DEVICE_ID3;
 
-   deviceserial0 += deviceserial2;
 
-   if (deviceserial0 != 0)
 
-   {
 
-     IntToUnicode(deviceserial0, &USBD_StringSerial[2], 8);
 
-     IntToUnicode(deviceserial1, &USBD_StringSerial[18], 4);
 
-   }
 
- }
 
- /**
 
-   * @brief  Convert Hex 32Bits value into char 
 
-   * @param  value: value to convert
 
-   * @param  pbuf: pointer to the buffer 
 
-   * @param  len: buffer length
 
-   * @retval None
 
-   */
 
- static void IntToUnicode(uint32_t value, uint8_t * pbuf, uint8_t len)
 
- {
 
-   uint8_t idx = 0;
 
-   for (idx = 0; idx < len; idx++)
 
-   {
 
-     if (((value >> 28)) < 0xA)
 
-     {
 
-       pbuf[2 * idx] = (value >> 28) + '0';
 
-     }
 
-     else
 
-     {
 
-       pbuf[2 * idx] = (value >> 28) + 'A' - 10;
 
-     }
 
-     value = value << 4;
 
-     pbuf[2 * idx + 1] = 0;
 
-   }
 
- }
 
- /**
 
-   * @}
 
-   */
 
- /**
 
-   * @}
 
-   */
 
- /**
 
-   * @}
 
-   */
 
- /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
 
 
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