Hello All,
I am using Cube MX (4.24) and Atollic truestudio (9.2.0) and want to implement a USB based boot loader part for my application .
Where i use STM32F777IITx MCU with "STM32Cube FW_F7 V1.9.0" firmware package.
Currently i was implementing USB binary file reading part,
However when i try the below given API's i am facing some issues which i have mentioned below
Issue 1.
If i use "f_open(&myFile, "OPENBLINKYFILE.TXT", FA_READ);" api i get error saying "FR_INVALID_NAME".
whereas, If i Use same api as follows "f_open(&SDFile, "BLINKY.TXT", FA_READ);"
I do not get any error it works i am able to open file and read data.
Issue 2.
If i use "f_stat("/TEST/BIN.TXT", &myFileinfo);" api i get error saying "FR_INVALID_NAME" also if i am not able to read file status.
whereas, If i Use same api as follows "f_open("/TEST/BLINKYOPEN.TXT", &myFileinfo);"
I do not get any error it works i am able to open file and read data.
I face such issue for many more api's whenever i want to access files with Long path name or long file name
I might be wrong but i think this is due to the small size of array declaration in FF.h which i have mentioned in bold
typedef struct {
_FDID obj; /* Object identifier */
DWORD dptr; /* Current read/write offset */
DWORD clust; /* Current cluster */
DWORD sect; /* Current sector (0:Read operation has terminated) */
BYTE* dir; /* Pointer to the directory item in the win[] */
BYTE fn[12]; /* SFN (in/out) {body[8],ext[3],status[1]} */
#if _USE_LFN != 0
DWORD blk_ofs; /* Offset of current entry block being processed (0xFFFFFFFF:Invalid) */
#endif
#if _USE_FIND
const TCHAR* pat; /* Pointer to the name matching pattern */
#endif
} DIR;
/* File information structure (FILINFO) */
typedef struct {
FSIZE_t fsize; /* File size */
WORD fdate; /* Modified date */
WORD ftime; /* Modified time */
BYTE fattrib; /* File attribute */
#if _USE_LFN != 0
TCHAR altname[13]; /* Alternative file name */
TCHAR fname[_MAX_LFN + 1]; /* Primary file name */
#else
TCHAR fname[13]; /* File name */
#endif
} FILINFO;
I request to please help me at the earliest at the earliest.
Also please help me with best firmware package version if i am using wrong.
Thanks and regards
Utkarsh
