RL-ARM User's Guide

FATVAR

The type FATVAR contains local variables for a FAT driver. The structure is defined in the file File_Config.h as follows:

typedef struct {
  U32  free_clus;                       /* Number of free clusters in FAT32  */
  U32  top_clus;                        /* The first free cluster in FAT 32  */
  U32  startDirClus;                    /* Starting cluster of directory     */
  U32  firstEntClus;                    /* First long-name entry cluster     */
  U16  firstEntOffs;                    /* Directory entry record index      */
  U8   numOfEntries;                    /* Number of entries for a long-name */
  BIT  in_root_1x;                      /* Root folder in FAT12/FAT16        */
  char name_buf[260];                   /* Long file-name buffer             */
} FATVAR;

Example:

#include <file_config.h>
...
FATVAR fatVars;
...
  fatVars.free_clus  = 3;
...