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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : usbd_storage_if.c
* @version : v1.0_Cube
* @brief : Memory management layer.
******************************************************************************
* @attention
*
* Copyright (c) 2026 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 */
/* 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 */
/* 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_HS */
/** USB Mass storage Standard Inquiry Data. */
const int8_t STORAGE_Inquirydata_HS[] = {/* 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_HS */
/* USER CODE BEGIN PRIVATE_VARIABLES */
/* USER CODE END PRIVATE_VARIABLES */
/**
* @}
*/
/** @defgroup USBD_STORAGE_Exported_Variables
* @brief Public variables.
* @{
*/
extern USBD_HandleTypeDef hUsbDeviceHS;
/* USER CODE BEGIN EXPORTED_VARIABLES */
/* USER CODE END EXPORTED_VARIABLES */
/**
* @}
*/
/** @defgroup USBD_STORAGE_Private_FunctionPrototypes
* @brief Private functions declaration.
* @{
*/
static int8_t STORAGE_Init_HS(uint8_t lun);
static int8_t STORAGE_GetCapacity_HS(uint8_t lun, uint32_t *block_num, uint16_t *block_size);
static int8_t STORAGE_IsReady_HS(uint8_t lun);
static int8_t STORAGE_IsWriteProtected_HS(uint8_t lun);
static int8_t STORAGE_Read_HS(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len);
static int8_t STORAGE_Write_HS(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len);
static int8_t STORAGE_GetMaxLun_HS(void);
/* USER CODE BEGIN PRIVATE_FUNCTIONS_DECLARATION */
/* USER CODE END PRIVATE_FUNCTIONS_DECLARATION */
/**
* @}
*/
USBD_StorageTypeDef USBD_Storage_Interface_fops_HS =
{
STORAGE_Init_HS,
STORAGE_GetCapacity_HS,
STORAGE_IsReady_HS,
STORAGE_IsWriteProtected_HS,
STORAGE_Read_HS,
STORAGE_Write_HS,
STORAGE_GetMaxLun_HS,
(int8_t *)STORAGE_Inquirydata_HS
};
/* Private functions ---------------------------------------------------------*/
/**
* @brief Initializes the storage unit (medium).
* @param lun: Logical unit number.
* @retval USBD_OK if all operations are OK else USBD_FAIL
*/
int8_t STORAGE_Init_HS(uint8_t lun)
{
/* USER CODE BEGIN 9 */
UNUSED(lun);
return (USBD_OK);
/* USER CODE END 9 */
}
/**
* @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_HS(uint8_t lun, uint32_t *block_num, uint16_t *block_size)
{
/* USER CODE BEGIN 10 */
UNUSED(lun);
*block_num = STORAGE_BLK_NBR;
*block_size = STORAGE_BLK_SIZ;
return (USBD_OK);
/* USER CODE END 10 */
}
/**
* @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_HS(uint8_t lun)
{
/* USER CODE BEGIN 11 */
UNUSED(lun);
return (USBD_OK);
/* USER CODE END 11 */
}
/**
* @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_HS(uint8_t lun)
{
/* USER CODE BEGIN 12 */
return (USBD_OK);
/* USER CODE END 12 */
}
/**
* @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_HS(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len)
{
/* USER CODE BEGIN 13 */
UNUSED(lun);
UNUSED(buf);
UNUSED(blk_addr);
UNUSED(blk_len);
return (USBD_OK);
/* USER CODE END 13 */
}
/**
* @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_HS(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len)
{
/* USER CODE BEGIN 14 */
UNUSED(lun);
UNUSED(buf);
UNUSED(blk_addr);
UNUSED(blk_len);
return (USBD_OK);
/* USER CODE END 14 */
}
/**
* @brief Returns the Max Supported LUNs.
* @param None
* @retval Lun(s) number.
*/
int8_t STORAGE_GetMaxLun_HS(void)
{
/* USER CODE BEGIN 15 */
return (STORAGE_LUN_NBR - 1);
/* USER CODE END 15 */
}
/* USER CODE BEGIN PRIVATE_FUNCTIONS_IMPLEMENTATION */
/* USER CODE END PRIVATE_FUNCTIONS_IMPLEMENTATION */
/**
* @}
*/
/**
* @}
*/
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