316 lines
8.0 KiB
C
316 lines
8.0 KiB
C
/* recPulseCounter.c */
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/* base/src/rec $Id$ */
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/* recPulseCounter.c - Record Support Routines for PulseCounter records */
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/*
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* Author: Janet Anderson
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* Date: 10-17-91
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*
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* Experimental Physics and Industrial Control System (EPICS)
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*
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* Copyright 1991, the Regents of the University of California,
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* and the University of Chicago Board of Governors.
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*
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* This software was produced under U.S. Government contracts:
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* (W-7405-ENG-36) at the Los Alamos National Laboratory,
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* and (W-31-109-ENG-38) at Argonne National Laboratory.
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*
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* Initial development by:
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* The Controls and Automation Group (AT-8)
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* Ground Test Accelerator
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* Accelerator Technology Division
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* Los Alamos National Laboratory
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*
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* Co-developed with
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* The Controls and Computing Group
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* Accelerator Systems Division
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* Advanced Photon Source
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* Argonne National Laboratory
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*
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* Modification Log:
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* -----------------
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* .01 11-11-91 jba Moved set and reset of alarm stat and sevr to macros
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* .02 02-05-92 jba Changed function arguments from paddr to precord
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* .03 02-28-92 jba ANSI C changes
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* .04 04-10-92 jba pact now used to test for asyn processing, not status
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* .05 04-18-92 jba removed process from dev init_record parms
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* .06 07-15-92 jba changed VALID_ALARM to INVALID alarm
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* .07 07-16-92 jba added invalid alarm fwd link test and chngd fwd lnk to macro
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*/
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include "dbDefs.h"
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#include "epicsPrint.h"
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#include "alarm.h"
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#include "dbAccess.h"
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#include "dbEvent.h"
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#include "dbFldTypes.h"
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#include "devSup.h"
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#include "errMdef.h"
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#include "recSup.h"
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#include "recGbl.h"
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#include "callback.h"
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#define GEN_SIZE_OFFSET
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#include "pulseCounterRecord.h"
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#undef GEN_SIZE_OFFSET
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/* Create RSET - Record Support Entry Table*/
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#define report NULL
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#define initialize NULL
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static long init_record();
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static long process();
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#define special NULL
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#define get_value NULL
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#define cvt_dbaddr NULL
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#define get_array_info NULL
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#define put_array_info NULL
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#define get_units NULL
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#define get_precision NULL
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#define get_enum_str NULL
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#define get_enum_strs NULL
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#define put_enum_str NULL
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static long get_graphic_double();
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static long get_control_double();
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#define get_alarm_double NULL
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struct rset pulseCounterRSET={
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RSETNUMBER,
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report,
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initialize,
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init_record,
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process,
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special,
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get_value,
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cvt_dbaddr,
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get_array_info,
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put_array_info,
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get_units,
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get_precision,
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get_enum_str,
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get_enum_strs,
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put_enum_str,
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get_graphic_double,
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get_control_double,
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get_alarm_double };
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struct pcdset { /* pulseCounter input dset */
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long number;
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DEVSUPFUN dev_report;
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DEVSUPFUN init;
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DEVSUPFUN init_record; /*returns: (-1,0)=>(failure,success)*/
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DEVSUPFUN get_ioint_info;
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DEVSUPFUN cmd_pc;/*(-1,0)=>(failure,success*/
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};
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/* def for gtyp field */
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#define SOFTWARE 1
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/* defs for counter commands */
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#define CTR_READ 0
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#define CTR_CLEAR 1
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#define CTR_START 2
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#define CTR_STOP 3
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#define CTR_SETUP 4
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static void monitor();
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/* control block for callback*/
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struct callback {
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CALLBACK callback;
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struct dbCommon *precord;
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};
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void callbackRequest();
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static void myCallback(CALLBACK *p)
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{
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struct callback *pcallback;
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struct pulseCounterRecord *pc;
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struct rset *prset;
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callbackGetUser(pcallback,p);
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pc=(struct pulseCounterRecord *)pcallback->precord;
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prset=(struct rset *)(pc->rset);
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dbScanLock((struct dbCommon *)pc);
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(*prset->process)(pc);
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dbScanUnlock((struct dbCommon *)pc);
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}
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static long init_record(struct pulseCounterRecord *ppc, int pass)
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{
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struct pcdset *pdset;
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struct callback *pcallback;
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long status=0;
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if (pass==0) return(0);
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/* must have device support */
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if(!(pdset = (struct pcdset *)(ppc->dset)))
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{
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recGblRecordError(S_dev_noDSET,(void *)ppc,"pc: init_record");
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return(S_dev_noDSET);
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}
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/* get the hgv value if sgl is a constant*/
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if (ppc->sgl.type == CONSTANT && ppc->gtyp == SOFTWARE)
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recGblInitConstantLink(&ppc->sgl,DBF_USHORT,&ppc->sgv);
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/* must have cmd_pc functions defined */
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if( (pdset->number < 5) || (pdset->cmd_pc == NULL) )
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{
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recGblRecordError(S_dev_missingSup,(void *)ppc,"pc: cmd_pc");
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return(S_dev_missingSup);
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}
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pcallback=(struct callback *)malloc(sizeof(struct callback));
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callbackSetCallback(myCallback,&pcallback->callback);
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callbackSetPriority(ppc->prio,&pcallback->callback);
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callbackSetUser(pcallback,&pcallback->callback);
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pcallback->precord=(struct dbCommon *)ppc;
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/* call device support init_record */
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if( pdset->init_record )
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{
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if((status=(*pdset->init_record)(ppc))) return(status);
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}
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ppc->cptr=(unsigned long)&pcallback;
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return(0);
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}
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static long process(struct pulseCounterRecord *ppc)
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{
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struct pcdset *pdset = (struct pcdset *)(ppc->dset);
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struct callback *pcallback=(struct callback *)(ppc->cptr);
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long status=0;
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unsigned short save;
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unsigned char pact=ppc->pact;
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/* must have cmd_pc functions defined */
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if( (pdset==NULL) || (pdset->cmd_pc==NULL) )
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{
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ppc->pact=TRUE;
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recGblRecordError(S_dev_missingSup,(void *)ppc,"cmd_pc");
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return(S_dev_missingSup);
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}
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/* get soft hgv value when sgl is a DB_LINK and gtyp from Software */
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if (!ppc->pact && ppc->gtyp == SOFTWARE)
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{
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status=dbGetLink(&(ppc->sgl),DBR_SHORT,&(ppc->sgv),0,0);
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if(status==0)
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{
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if(ppc->sgv != ppc->osgv) /* sgv changed */
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{
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save=ppc->cmd;
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if(ppc->sgv!=0)
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ppc->cmd=CTR_START;
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else
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ppc->cmd=CTR_STOP;
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status=(*pdset->cmd_pc)(ppc);
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ppc->cmd=save;
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ppc->osgv=ppc->sgv;
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if(status!=0)
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recGblSetSevr(ppc,SOFT_ALARM,INVALID_ALARM);
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if(ppc->pact==TRUE)
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{
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callbackRequest(&pcallback->callback);
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return(0);
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}
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}
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}
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else
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recGblSetSevr(ppc,LINK_ALARM,INVALID_ALARM);
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}
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if(ppc->cmd>0)
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{
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ppc->scmd=ppc->cmd;
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status=(*pdset->cmd_pc)(ppc);
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ppc->cmd=CTR_READ;
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}
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if(ppc->pact==TRUE)
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{
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callbackRequest((CALLBACK *)pcallback);
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return(0);
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}
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if (status==0) status=(*pdset->cmd_pc)(ppc);
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/* check if device support set pact */
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if ( !pact && ppc->pact ) return(0);
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ppc->pact = TRUE;
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ppc->udf=FALSE;
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recGblGetTimeStamp(ppc);
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/* check event list */
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monitor(ppc);
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/* process the forward scan link record */
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recGblFwdLink(ppc);
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ppc->pact=FALSE;
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return(status);
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}
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static long get_graphic_double(struct dbAddr *paddr, struct dbr_grDouble *pgd)
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{
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struct pulseCounterRecord *ppc=(struct pulseCounterRecord *)paddr->precord;
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if(paddr->pfield==(void *)&ppc->val)
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{
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pgd->upper_disp_limit = ppc->hopr;
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pgd->lower_disp_limit = ppc->lopr;
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}
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else
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recGblGetGraphicDouble(paddr,pgd);
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return(0);
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}
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static long get_control_double(struct dbAddr *paddr, struct dbr_ctrlDouble *pcd)
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{
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struct pulseCounterRecord *ppc=(struct pulseCounterRecord *)paddr->precord;
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if(paddr->pfield==(void *)&ppc->val)
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{
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pcd->upper_ctrl_limit = ppc->hopr;
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pcd->lower_ctrl_limit = ppc->lopr;
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}
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else
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recGblGetControlDouble(paddr,pcd);
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return(0);
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}
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static void monitor(struct pulseCounterRecord *ppc)
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{
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unsigned short monitor_mask;
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monitor_mask = recGblResetAlarms(ppc);
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monitor_mask |= (DBE_VALUE | DBE_LOG);
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db_post_events(ppc,&ppc->val,monitor_mask);
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if (ppc->scmd != ppc->cmd)
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{
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db_post_events(ppc,&ppc->scmd,monitor_mask);
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ppc->scmd=ppc->cmd;
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}
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return;
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}
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