/* Includes ------------------------------------------------------------------*/
#include "usbd_storage.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define STORAGE_LUN_NBR 2
#define STORAGE_BLK_NBR 64 //256 blocks * 512 = 128k
#define STORAGE_BLK_SIZ 512 //doesn't seem to work well with values other than 512
#define STORAGE_CAPACITY (STORAGE_BLK_NBR * STORAGE_BLK_SIZ)
#define WAIT_TIMEOUT 5000
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* USB Mass storage Standard Inquiry Data */
int8_t STORAGE_Inquirydata[] = { /* 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', 'M', ' ', ' ', ' ', ' ', ' ', /* Manufacturer: 8 bytes */
'P', 'r', 'o', 'd', 'u', 'c', 't', ' ', /* Product : 16 Bytes */
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
'0', '.', '0','1', /* Version : 4 Bytes */
};
extern USBD_HandleTypeDef USBD_Device;
/* Private function prototypes -----------------------------------------------*/
int8_t STORAGE_Init(uint8_t lun);
int8_t STORAGE_GetCapacity(uint8_t lun, uint32_t *block_num, uint16_t *block_size);
int8_t STORAGE_IsReady(uint8_t lun);
int8_t STORAGE_IsWriteProtected(uint8_t lun);
int8_t STORAGE_Read(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len);
int8_t STORAGE_Write(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len);
int8_t STORAGE_GetMaxLun(void);
USBD_StorageTypeDef USBD_DISK_fops = {
STORAGE_Init,
STORAGE_GetCapacity,
STORAGE_IsReady,
STORAGE_IsWriteProtected,
STORAGE_Read,
STORAGE_Write,
STORAGE_GetMaxLun,
STORAGE_Inquirydata,
};
/* Private functions ---------------------------------------------------------*/
#define FLASH_USER_START_ADDR ADDR_FLASH_SECTOR_6 /* Start @ of user Flash area */
#define FLASH_USER_END_ADDR ADDR_FLASH_SECTOR_6 + GetSectorSize(ADDR_FLASH_SECTOR_6) -1 /* End @ of user Flash area : sector start address + sector size -1 */
#define ADDR_FLASH_SECTOR_0 ((uint32_t)0x08000000) /* Base address of Sector 0, 16 Kbytes */
#define ADDR_FLASH_SECTOR_1 ((uint32_t)0x08004000) /* Base address of Sector 1, 16 Kbytes */
#define ADDR_FLASH_SECTOR_2 ((uint32_t)0x08008000) /* Base address of Sector 2, 16 Kbytes */
#define ADDR_FLASH_SECTOR_3 ((uint32_t)0x0800C000) /* Base address of Sector 3, 16 Kbytes */
#define ADDR_FLASH_SECTOR_4 ((uint32_t)0x08010000) /* Base address of Sector 4, 64 Kbytes */
#define ADDR_FLASH_SECTOR_5 ((uint32_t)0x08020000) /* Base address of Sector 5, 128 Kbytes */
#define ADDR_FLASH_SECTOR_6 ((uint32_t)0x08040000) /* Base address of Sector 6, 128 Kbytes */
#define ADDR_FLASH_SECTOR_7 ((uint32_t)0x08060000) /* Base address of Sector 7, 128 Kbytes */
static uint32_t GetSector(uint32_t Address);
/**
* @brief Initializes the storage unit (medium)
* @param lun: Logical unit number
* @retval Status (0 : OK / -1 : Error)
*/
int8_t STORAGE_Init(uint8_t lun)
{
switch(lun){
case 0:
break;
case 1:
break;
case 2:
break;
default:
return (USBD_FAIL);
}
return (USBD_OK);
}
/**
* @brief Returns the medium capacity.
* @param lun: Logical unit number
* @param block_num: Number of total block number
* @param block_size: Block size
* @retval Status (0: OK / -1: Error)
*/
int8_t STORAGE_GetCapacity(uint8_t lun, uint32_t *block_num, uint16_t *block_size)
{
switch(lun){
case 0:
*block_num = STORAGE_BLK_NBR;
*block_size = STORAGE_BLK_SIZ;
break;
case 1:
*block_num = STORAGE_BLK_NBR;
*block_size = STORAGE_BLK_SIZ;
break;
case 2:
*block_num = STORAGE_BLK_NBR;
*block_size = STORAGE_BLK_SIZ;
break;
default:
return (USBD_FAIL);
}
return (USBD_OK);
}
/**
* @brief Checks whether the medium is ready.
* @param lun: Logical unit number
* @retval Status (0: OK / -1: Error)
*/
int8_t STORAGE_IsReady(uint8_t lun)
{
switch(lun){
case 0:
break;
case 1:
break;
case 2:
break;
default:
return (USBD_FAIL);
}
return (USBD_OK);
}
/**
* @brief Checks whether the medium is write protected.
* @param lun: Logical unit number
* @retval Status (0: write enabled / -1: otherwise)
*/
int8_t STORAGE_IsWriteProtected(uint8_t lun)
{
// Uart2_printf("STORAGE_IsWriteProtected\r\n");
switch(lun){
case 0:
break;
case 1:
break;
case 2:
break;
default:
return (USBD_FAIL);
}
return (USBD_OK);
}
/**
* @brief Reads data from the medium.
* @param lun: Logical unit number
* @param blk_addr: Logical block address
* @param blk_len: Blocks number
* @retval Status (0: OK / -1: Error)
*/
int8_t STORAGE_Read(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len)
{
uint32_t i, j;
switch(lun){
case 0:
break;
case 1:
break;
case 2:
break;
default:
return (USBD_FAIL);
}
return (USBD_OK);
}
/**
* @brief Writes data into the medium.
* @param lun: Logical unit number
* @param blk_addr: Logical block address
* @param blk_len: Blocks number
* @retval Status (0 : OK / -1 : Error)
*/
int8_t STORAGE_Write(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len)
{
switch(lun){
case 0:
break;
case 1:
break;
case 2:
break;
default:
return (USBD_FAIL);
}
return (USBD_OK);
}
/**
* @brief Returns the Max Supported LUNs.
* @param None
* @retval Lun(s) number
*/
int8_t STORAGE_GetMaxLun(void)
{
return(STORAGE_LUN_NBR - 1);
}
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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