Страница 1 мировой engineering стандарты общая спецификация

Page 227
GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
REPEAT
IF (request_DPIDs[Req_Index] = PDS[PDS_Index].DPID)
DPID_already_scheduled ←
YES
PDS[PDS_Index].Transmit_Count ←
$00
PDS[PDS_Index].Scheduling_Rate ←
Req_Sched_Rate_Count
ELSE IF ((PDS[PDS_Index].DPID = $00) AND
(vacant_position_found = NO)) THEN
vacant_position ←
PDS_Index
vacant_position_found ←
YES
ENDIF
PDS_Index ←
PDS_Index +1
UNTIL ((DPID_already_scheduled = YES)OR(PDS_Index = PDS_Length))
IF (DPID_already_scheduled = NO)
PDS_Number_Active ←
(PDS_Number_Active + $01)
PDS[vacant_position].DPID ←
request_DPIDs[Req_Index]
PDS[vacant_position].Transmit_Count ←
$00
PDS[vacant_position].Scheduling_Rate ←
Req_Sched_Rate_Count
ENDIF
ENDFOR
ENDSELECT
ENDIF
ENDFUNCTION
The following function is called from the Process_AA_Msgs() function and is used to control sending the
periodic DPIDs in the PDS.
BEGINFUNCTION Send_AA_Periodic_Msgs()
/* check if the PDS should be running by looking at the number of DPIDs in the PDS */
IF (PDS_Number_Active > $00)THEN
/*Decrement transmit count by one unless already $00*/
CALL DecrementPDS_Counters()
/* check to see if any DPIDs need to be sent */
IF (Num_Loops_Since_Periodic ≥ Min_Loops_Since_Periodic) THEN
FOR (PDS_Index ←
$01 TO PDS_Length BY $01)
IF ( (PDS[PDS_Xmit_Index].DPID != $00) AND
(PDS[PDS_Xmit_Index].Transmit_Count = $00)
/* Get current data (DB_1,... DBx) for this DPID and send it*/
Send positive response ($UUDTCANId $PDS[PDS_Xmit_Index].DPID $DB_1, ....)
PDS[PDS_Xmit_Index].Transmit_Count ←
PDS[PDS_Xmit_Index].Scheduling_Rate
PDS_Index ←
PDS_Length
Service_AA_Msg_Sent ←
YES
Num_Loops_Since_Periodic ←
$00
ENDIF
PDS_Xmit_Index ←
((PDS_Xmit_Index + $01) MOD PDS_Length)
ENDFOR
ENDIF

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ENDIF
ENDFUNCTION