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SdFat
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FSINFO sector for a FAT32 volume. More...
#include <SdFatStructs.h>
Public Attributes | |
| uint32_t | freeCount |
| uint32_t | leadSignature |
| uint32_t | nextFree |
| uint8_t | reserved1 [480] |
| uint8_t | reserved2 [12] |
| uint32_t | structSignature |
| uint8_t | tailSignature [4] |
FSINFO sector for a FAT32 volume.
| uint32_t fat32_fsinfo::freeCount |
Contains the last known free cluster count on the volume. If the value is 0xFFFFFFFF, then the free count is unknown and must be computed. Any other value can be used, but is not necessarily correct. It should be range checked at least to make sure it is <= volume cluster count.
| uint32_t fat32_fsinfo::leadSignature |
must be 0X52, 0X52, 0X61, 0X41
| uint32_t fat32_fsinfo::nextFree |
This is a hint for the FAT driver. It indicates the cluster number at which the driver should start looking for free clusters. If the value is 0xFFFFFFFF, then there is no hint and the driver should start looking at cluster 2.
| uint8_t fat32_fsinfo::reserved1[480] |
must be zero
| uint8_t fat32_fsinfo::reserved2[12] |
must be zero
| uint32_t fat32_fsinfo::structSignature |
must be 0X72, 0X72, 0X41, 0X61
| uint8_t fat32_fsinfo::tailSignature[4] |
must be 0X00, 0X00, 0X55, 0XAA
1.7.4