"File System Format" (APP/LFS)

ITOS Mnemonic:  LFSSYSFORMAT

View Options: (help)

Focus:	Maintenance / Operation
Structures:	Abstract / Concrete

Context:

Description:

This telecommand will reformat one of the TFFS file system partitions contained in the SIB board EEPROM banks. The partition will start at the offset into the bank as indicated by the telecommand parameters. The file system partition should not overlap the boot partition contained in the EEPROM bank. Use this command with care, since it will destroy any previous file system partition stored in that bank. Valid devices for this telecommand are '/ee0' (2), and '/ee1' (3).

Layout:  (hide detail; help)

File System Format (LLFSSYSFORMAT) Telecommand Packet Format
0x	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
000	Version=0			T=1	SH	APID=0x649:0
002	SF=3		Sequence Count
004	Packet Length=15
006	0	Function Code=0
008	LATUNIT latUnit
00A	PAD16 pad16
00C	FILEID fileID
010	OFFSET sysOffset
014	Packet Checksum

LLFSSYSFORMAT (pkt)
|  LATUNIT latUnit (fld)
|  PAD16 pad16 (fld)
|  FILEID fileID (fld)
|  OFFSET sysOffset (fld)

typedef struct _LFS_LLFSSYSFORMAT_Pkt {

    /* CCSDS header */
    char                 hdr[8];

    /* Command payload */
    LFS_LLFSSYSFORMAT_Prm pay;

} LFS_LLFSSYSFORMAT_Pkt;

Fields:

FILEID (index)

Attribute(s):  

Brief:  "File Storage ID"

Instance(s):  fileID

LATUNIT (index)

Attribute(s):  

Brief:  "LAT Unit ID and Transaction ID"

Instance(s):  latUnit

OFFSET (index)

Attribute(s):  

Brief:  "Offset in bytes"

Instance(s):  sysOffset

PAD16 (index)

Attribute(s):  

Brief:  "16-bit padding"

Instance(s):  pad16