103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
/*************************************************************************\
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* Copyright (c) 2008 UChicago Argonne LLC, as Operator of Argonne
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* National Laboratory.
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* Copyright (c) 2002 The Regents of the University of California, as
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* Operator of Los Alamos National Laboratory.
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* EPICS BASE is distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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\*************************************************************************/
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/*
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* Original Authors: Bob Dalesio and Marty Kraimer
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* Date: 6-1-90
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "alarm.h"
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#include "dbDefs.h"
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#include "dbAccess.h"
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#include "dbEvent.h"
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#include "recGbl.h"
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#include "devSup.h"
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#include "waveformRecord.h"
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#include "epicsExport.h"
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/* Create the dset for devWfSoft */
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static long init_record(waveformRecord *prec);
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static long read_wf(waveformRecord *prec);
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struct {
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long number;
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DEVSUPFUN report;
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DEVSUPFUN init;
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DEVSUPFUN init_record;
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DEVSUPFUN get_ioint_info;
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DEVSUPFUN read_wf;
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} devWfSoft = {
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5,
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NULL,
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NULL,
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init_record,
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NULL,
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read_wf
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};
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epicsExportAddress(dset, devWfSoft);
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static long init_record(waveformRecord *prec)
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{
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long nelm = prec->nelm;
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long status = dbLoadLinkArray(&prec->inp, prec->ftvl, prec->bptr, &nelm);
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if (!status && nelm > 0) {
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prec->nord = nelm;
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prec->udf = FALSE;
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}
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else
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prec->nord = 0;
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return status;
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}
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struct wfrt {
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long nRequest;
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epicsTimeStamp *ptime;
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};
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static long readLocked(struct link *pinp, void *vrt)
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{
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waveformRecord *prec = (waveformRecord *) pinp->precord;
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struct wfrt *prt = (struct wfrt *) vrt;
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long status = dbGetLink(pinp, prec->ftvl, prec->bptr, 0, &prt->nRequest);
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if (!status && prt->ptime)
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dbGetTimeStamp(pinp, prt->ptime);
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return status;
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}
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static long read_wf(waveformRecord *prec)
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{
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long status;
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struct wfrt rt;
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epicsUInt32 nord = prec->nord;
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rt.nRequest = prec->nelm;
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rt.ptime = (dbLinkIsConstant(&prec->tsel) &&
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prec->tse == epicsTimeEventDeviceTime) ? &prec->time : NULL;
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status = dbLinkDoLocked(&prec->inp, readLocked, &rt);
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if (status == S_db_noLSET)
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status = readLocked(&prec->inp, &rt);
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if (!status && rt.nRequest > 0) {
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prec->nord = rt.nRequest;
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prec->udf = FALSE;
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if (nord != prec->nord)
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db_post_events(prec, &prec->nord, DBE_VALUE | DBE_LOG);
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}
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return status;
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}
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