"LAT Unit and Transaction ID Bitfield" (APP/LSM)

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Focus:	Maintenance / Operation
Structures:	Abstract / Concrete

Ancestry:

0x000	pkt	noop
0x008	bf	IDBF target

Definition:

Alignment:	2-byte boundary
APID:	1680/0x690:2
Attribute(s):
C type:	unsigned short
Length:	16 bits (2 bytes)
Offset:	0x008

Description:

Bitfield to contain the LAT unit that is the target of a LSM telecommand and the transaction ID for the MEM telecommand.

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Item Type and Name

IDBF (bf)
|  UNIT unit (0-3)
|  TRANID tranID (4-15)

typedef struct _LSM_IDBF_Bfl {

    #if ENDIANNESS_IS_BIG

    /* Target LAT Unit */
    unsigned short       unit:4;

    /* Transaction ID */
    unsigned short       tranID:12;

    #elif ENDIANNESS_IS_LITTLE

    /* Transaction ID */
    unsigned short       tranID:12;

    /* Target LAT Unit */
    unsigned short       unit:4;

    #else

    #error _FILE_ ENDIANNESS NOT DEFINED

    #endif

} __attribute__((packed)) LSM_IDBF_Bfl;

typedef union _LSM_IDBF {

    /* underlying unsigned short */
    unsigned short                  us;

    /* struct mapped bitfield */
    struct _LSM_IDBF_Bfl            bf;

} LSM_IDBF;