Question
stm32f407 msc can not format
Posted on June 01, 2015 at 11:29
Hello!I am using stm32f407 flash to make a msc.It can be identified by my pc.But I can not format it.Can somebody help me?Thanks a lot!Here are my code on usbd_storage.c.
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define STORAGE_LUN_NBR 1
#define STORAGE_BLK_NBR 0x00300
#define STORAGE_BLK_SIZ 0x200
#define USER_FLASH_START 0x8060000 /* Flash start address 56K */
#define USER_FLASH_END ( 0x8060000 + ( 0x60000 ) )
#define USER_FLASH_SIZE ( USER_FLASH_END - USER_FLASH_START )
static uint32_t user_flash_StartAddr,user_flash_EndAddr;
int8_t STORAGE_Init(uint8_t lun)
{
static uint32_t SectorError = 0;
static uint32_t FirstSector,NbOfSectors;
user_flash_EndAddr = USER_FLASH_END;
user_flash_StartAddr = USER_FLASH_START;
/* Unlock the Flash to enable the flash control register access *************/
HAL_FLASH_Unlock();
/* Get the 1st sector to erase */
FirstSector = GetSector(user_flash_StartAddr);
/* Get the number of sector to erase from 1st sector*/
NbOfSectors = GetSector(user_flash_EndAddr) - FirstSector + 1;
/* Fill EraseInit structure*/
EraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS;
EraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3;
EraseInitStruct.Sector = FirstSector;
EraseInitStruct.NbSectors = NbOfSectors;
/* Note: If an erase operation in Flash memory also concerns data in the data or instruction cache,
you have to make sure that these data are rewritten before they are accessed during code
execution. If this cannot be done safely, it is recommended to flush the caches by setting the
DCRST and ICRST bits in the FLASH_CR register. */
HAL_FLASHEx_Erase(&EraseInitStruct, &SectorError);
return 0;
}
/**
* @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)
{
*block_num = STORAGE_BLK_NBR;
*block_size = STORAGE_BLK_SIZ ;
return (0);
}
/**
* @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)
{
return 0;
}
/**
* @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)
{
return 0;
}
/**
* @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)
{
static uint32_t i = 0,k =0;
uint8_t * firmware ;
firmware = (uint8_t*)USER_FLASH_START;
for (k=0;k<blk_len;k++)
for ( i = 0; i<512; i++)
{
buf[i] = *(firmware + blk_addr*512/8);
}
return 0;
}
/**
* @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)
{
static uint32_t Address;
static uint16_t cnt_number1 = 0x00;
static uint16_t cnt_number2 = 0x00;
Address = user_flash_StartAddr;
for(cnt_number1 = 0;cnt_number1 < blk_len ;cnt_number1 ++)
for(cnt_number2 = 0;cnt_number2 < 8 ;cnt_number2 ++)
if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, Address+blk_addr*512/8, (u64)(*buf)) == HAL_OK)
{
buf = buf +8;
}
return 0;
}
/**
* @brief Returns the Max Supported LUNs.
* @param None
* @retval Lun(s) number
*/
int8_t STORAGE_GetMaxLun(void)
{
return(STORAGE_LUN_NBR - 1);
}