"File System Check" (APP/LFS)

ITOS Mnemonic:  LFSSYSCHECK

View Options: (help)

Focus:	Maintenance / Operation
Structures:	Abstract / Concrete

Context:

Description:

This telecommand runs the chkdsk utility on the target on-board file system. Valid devices for this telecommand are '/ee0' (2), and '/ee1' (3).

Layout:  (hide detail; help)

File System Check (SysCheck) 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=0x648:7
002	SF=3		Sequence Count
004	Packet Length=11
006	0	Function Code=7
008	NODEPAD flag
00A	PAD16 pad16
00C	FILEID fileID
010	Packet Checksum

SysCheck (pkt)
|  NODEPAD flag (bf)
|  |  NODE nid (0-3)
|  |  PAD12 pad12 (4-15)
|  PAD16 pad16 (fld)
|  FILEID fileID (fld)

typedef struct _LFS_SysCheck_Pkt {

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

    /* Command payload */
    LFS_SysCheck_Prm     pay;

} LFS_SysCheck_Pkt;

Fields:

FILEID (index)

Attribute(s):  

Brief:  "File Storage ID"

Instance(s):  fileID

NODEPAD (index)

Attribute(s):  

Brief:  "Compound of node ID and padding"

Instance(s):  flag

Compound of node ID and padding

PAD16 (index)

Attribute(s):  LFSMBZ

Brief:  "16-bit padding"

Instance(s):  pad16