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_MMCFCB Struct Reference
[Multimedia Card Driver]

Collaboration diagram for _MMCFCB:

Collaboration graph
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Detailed Description

Local multimedia card mount information.


Data Fields

NUTDEVICEfcb_fsdev
 Attached file system device.
DOSPART fcb_part
 Partition table entry of the currently mounted partition.
u_long fcb_blknum
 Next block number to read.
u_char fcb_blkbuf [MMC_BLOCK_SIZE]
 Internal block buffer.


Field Documentation

u_long _MMCFCB::fcb_blknum
 

Next block number to read.

The file system driver will send a NUTBLKDEV_SEEK control command to set this value before calling the read or the write routine.

The number is partition relative.

u_char _MMCFCB::fcb_blkbuf[MMC_BLOCK_SIZE]
 

Internal block buffer.

A file system driver may use this one or optionally provide it's own buffers.

Minimal systems may share their external bus interface with device I/O lines, in which case the buffer must be located in internal memory.


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