f _expand The f _expand function prepares or allocates a contiguous data area to the file. FRESULT f _expand ( FIL* fp , /* [IN] File object */ FSIZE_t fsz , /* [IN] File size expanded to */ BYTE opt /* [IN] Allocation mode */ ), Fatfs example … Fatfs example, FRESULT f _expand (FIL *fp, FSIZE_t szf, BYTE opt) ¶ Allocate a contiguous block to the file. Return FRESULT Parameters. fp: Pointer to file szf: Size to expand to opt: Operation mode. Prepare only (0) or Allocate now (1). FRESULT f_mount ( FATFS *fs, const TCHAR *path, BYTE opt) ¶ Mount/Unmount a logical drive. Return FRESULT Parameters, FatFs is a generic FAT/exFAT filesystem module for small embedded systems. The FatFs module is written in compliance with ANSI C (C89) and completely separated from the disk I/O layer. Therefore it is independent of the platform. It can be incorporated into small microcontrollers with limited resource, such as 8051, PIC, AVR, ARM, Z80, RX and etc.
(0:Disable, 1:Enable 2:Enable with matching altname[] too) */ #define _USE_MKFS 1 /* This option switches f_mkfs() function. (0:Disable or 1:Enable) */ #define _USE_FASTSEEK 0 /* This option switches fast seek function. (0:Disable or 1:Enable) */ #define _USE_EXPAND 1 /* This option switches f.
Extended Use of FatFs API. These are examples of extended use of FatFs APIs. New item will be added whenever a useful code is found. Open or create a file for append (for only R0.12 and earlier) Empty a directory Allocate contiguous area to the file (for only R0.11a and earlier) Compatibility checker for low level disk I/O module FAT image creator, Added f _expand(). (_USE_EXPAND) Changed some members in FINFO structure and behavior of f_readdir(). Added an option _USE_CHMOD. Removed an option _WORD_ACCESS. Fixed errors in the case conversion table of Unicode (cc*.c). R0.12a (July 10, 2016) Added support for creating exFAT volume with some changes of f_mkfs(). Added a file open method FA_OPEN_APPEND.
Tried doing something I’ve seen advised. Pre alocated a file in contiguous sectors (had to check fatfs sample code because I am using FATFS prior to f _expand being added, c’mon Tivaware update your package, it’s at least 3 versions behind, I know it’s third party but still). This all using FATFS .
FatFs is a generic FAT file system module for small embedded systems. The FatFs is written in compliance with ANSI C and completely separated from the disk I/O layer. Therefore it is independent of hardware architecture. – stm32duino/ FatFs . Fix #2Signed-off-by: Frederic Pillon .
9/12/2016 · (0:Disable, 1:Enable 2:Enable with matching altname[] too) */ #define _USE_MKFS 1 /* This option switches f_mkfs() function. (0:Disable or 1:Enable) */ #define _USE_FASTSEEK 0 /* This option switches fast seek function. (0:Disable or 1:Enable) */ #define _USE_EXPAND 1 /* This option switches f _expand function.
