"Sets the GRB Processing State" (APP/LPA)

ITOS Mnemonic:  LPASETGRB

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Focus:	Maintenance / Operation
Structures:	Abstract / Concrete

Context:

Description:

Enables or disables processing of GRB messages from the GBM and/or EPUs. A value of 0 will DISABLE the processing, and a value of 1 will ENABLE the processing. Set the coresponding valid parameter to 1 to allow processing of parameter. GRB detection simulation parameters control: type of simulation to execute, interval between states, and a repoint request time in seconds - 0 = no request. When the simulation mode is zero (disabled) , the emaining simlation parameters are ignored. Changes the active GRB processor software executing on the SIU and EPUs. To set the active GRB ID on a cpu, set the bit in the cpu mask parameter corresponding to the cpu node ID. The GRB_ID corresponds to the ID value set for the GRB processor in the LPA_DB GRB schema instance. Set the corresponding valid parameter to 1 to allow processing of parameter.

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Sets the GRB Processing State (SetGrb) 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=0x675:3
002	SF=3		Sequence Count
004	Packet Length=33
006	0	Function Code=3
008	CPU_MSK cpus
00C	GRB_ID grb
010	GRB_ENAB gbm
014	GRB_ENAB epu
018	GRB_SIM_MODE mode
01C	GRB_SIM_INTERVAL intv
020	GRB_SIM_RPT rpt
024	GRBPRMVALID valid
026	Packet Checksum

SetGrb (pkt)
|  CPU_MSK cpus (fld)
|  GRB_ID grb (fld)
|  GRB_ENAB gbm (fld) ... epu (fld)
|  GRB_SIM_MODE mode (fld)
|  GRB_SIM_INTERVAL intv (fld)
|  GRB_SIM_RPT rpt (fld)
|  GRBPRMVALID valid (bf)
|  |  VALID_FLG grb (0) ... epu (2)
|  |  SPARE13 spare (3-15)

typedef struct _LPA_SetGrb_Pkt {

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

    /* Command payload */
    LPA_SetGrb_Prm       pay;

} LPA_SetGrb_Pkt;

Fields:

CPU_MSK (index)

Attribute(s):  

Brief:  "CPU Mask"

Instance(s):  cpus

Mask of logical IDs for target CPUs.

GRB_ENAB (index)

Attribute(s):  

Brief:  "GRB Enable Word"

Instance(s):  epu, gbm

GRB_ID (index)

Attribute(s):  

Brief:  "GRB Processor ID"

Instance(s):  grb

GRB_SIM_INTERVAL (index)

Attribute(s):  

Brief:  "GRB Simulation Interval"

Instance(s):  intv

GRB_SIM_MODE (index)

Attribute(s):  

Brief:  "GRB Simulation Mode"

Instance(s):  mode

GRB_SIM_RPT (index)

Attribute(s):  

Brief:  "GRB Simulation Repoint Seconds"

Instance(s):  rpt

GRBPRMVALID (index)

Attribute(s):  

Brief:  "GRB Parameter Valid Flags"

Instance(s):  valid

Parameter valid flags.