"SIU on configuration" (DAQ/ISIS)

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Focus:	Maintenance / Operation
Structures:	Abstract / Concrete

Definition:

Alignment:	2-byte boundary
APID:	1672/0x688:16
Attribute(s):
C type:	unsigned short
Length:	16 bits (2 bytes)

Description:

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Item Type and Name

siu_cfg (bf)
|  siu_id siu (0-1)
|  p_s_select mf (2)
|  on_off_select pdu_0 (3) ... pdu_1 (4)
|  p_s_select dab (5)
|  on_off_select pps_i (6)
|  p_s_select pps (7) ... ssr (9)
|  BITS_6 pad (10-15)

typedef struct _ISIS_siu_cfg_Bfl {

    #if ENDIANNESS_IS_BIG

    /* Identifies the SIU */
    unsigned short       siu:2;

    /* Simple primary-seconday selector */
    unsigned short       mf:1;

    /* Simple on-off selector */
    unsigned short       pdu_0:1;

    /* Simple on-off selector */
    unsigned short       pdu_1:1;

    /* Simple primary-seconday selector */
    unsigned short       dab:1;

    /* Simple on-off selector */
    unsigned short       pps_i:1;

    /* Simple primary-seconday selector */
    unsigned short       pps:1;

    /* Simple primary-seconday selector */
    unsigned short       gbm:1;

    /* Simple primary-seconday selector */
    unsigned short       ssr:1;

    /* Bits, 6 wide */
    unsigned short       pad:6;

    #elif ENDIANNESS_IS_LITTLE

    /* Bits, 6 wide */
    unsigned short       pad:6;

    /* Simple primary-seconday selector */
    unsigned short       ssr:1;

    /* Simple primary-seconday selector */
    unsigned short       gbm:1;

    /* Simple primary-seconday selector */
    unsigned short       pps:1;

    /* Simple on-off selector */
    unsigned short       pps_i:1;

    /* Simple primary-seconday selector */
    unsigned short       dab:1;

    /* Simple on-off selector */
    unsigned short       pdu_1:1;

    /* Simple on-off selector */
    unsigned short       pdu_0:1;

    /* Simple primary-seconday selector */
    unsigned short       mf:1;

    /* Identifies the SIU */
    unsigned short       siu:2;

    #else

    #error _FILE_ ENDIANNESS NOT DEFINED

    #endif

} __attribute__((packed)) ISIS_siu_cfg_Bfl;

typedef union _ISIS_siu_cfg {

    /* underlying unsigned short */
    unsigned short                  us;

    /* struct mapped bitfield */
    struct _ISIS_siu_cfg_Bfl        bf;

} ISIS_siu_cfg;

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