Hello @frogrammer,
How to Format an SD Card with FileX
To format an SD card, the main steps are as follows:
Initialize the File System
Before any operation, you need to initialize the file system using the fx_system_initialize() function. This prepares the FileX environment to manage storage media.
Use the fx_media_format() Formatting Function
This function formats the card with a file system (FAT32). It requires several important parameters:
UINT _fx_media_format(FX_MEDIA *media_ptr,
VOID (*driver)(FX_MEDIA *media),
VOID *driver_info_ptr,
UCHAR *memory_ptr,
UINT memory_size,
CHAR *volume_name,
UINT number_of_fats,
UINT directory_entries,
UINT hidden_sectors,
ULONG total_sectors,
UINT bytes_per_sector,
UINT sectors_per_cluster,
UINT heads,
UINT sectors_per_track);
Parameter Descriptions
media_ptr:
Pointer to the media control block. This structure manages the media and does not need to be opened before calling this function.
driver:
Pointer to the FileX driver function. This driver must be able to handle requests before the media is opened.
driver_info_ptr:
Optional pointer to driver-specific information or context.
memory_ptr:
Pointer to a memory buffer used by FileX during formatting. This buffer must be at least 512 bytes plus one sector size.
memory_size:
Size of the memory buffer pointed to by memory_ptr.
volume_name:
Name of the volume (label) to assign to the formatted media.
number_of_fats:
Number of FAT copies to create (usually 2 for redundancy).
directory_entries:
Number of root directory entries.
hidden_sectors:
Number of hidden sectors before the start of the volume.
total_sectors:
Total number of sectors on the media.
bytes_per_sector:
Number of bytes per sector (commonly 512 bytes for SD cards).
sectors_per_cluster:
Number of sectors per cluster, which defines the allocation unit size.
heads:
Number of heads (used to simulate disk geometry; usually 1 for removable media).
sectors_per_track:
Number of sectors per track (used for disk geometry simulation).
Regards,
Maher
