Question
STM32F407VET6 MicroSD initialization issue
I am using STM32F407VE Black Board. It contains the STM32F407VET6 chip. It has a microSD slot but the slot's CD pin is not connected. Due to this f_mount() is always returning faults. I don't know if this hardware miss connection is the primary problem why f_mount() returns faults or there are more problems. Please help me out with this. I am stuck since 2-3 days. I tried modifying the dist_status and dist_initialize functions to bypass this hardware check but when I upload the code, the board does nothing for 20-30sec and f_mount again returns error. I have attached my code changes
DSTATUS disk_status (
BYTE pdrv /* Physical drive number to identify the drive */
)
{
// DSTATUS stat;
//
// stat = disk.drv[pdrv]->disk_status(disk.lun[pdrv]);
// return stat;
return 0x04;
}
// Inside diskio.h:
/* Disk Status Bits (DSTATUS) */
#define STA_NOINIT 0x01 /* Drive not initialized */
#define STA_NODISK 0x02 /* No medium in the drive */
#define STA_PROTECT 0x04 /* Write protected */0x04 indicates write protected.
DSTATUS disk_initialize (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
DSTATUS stat = RES_OK;
if(disk.is_initialized[pdrv] == 0)
{
stat = disk.drv[pdrv]->disk_initialize(disk.lun[pdrv]);
if(stat == RES_OK)
{
disk.is_initialized[pdrv] = 1;
}
}
stat = 0x04;
return stat;
// return 0;
}