349 lines
9.4 KiB
C
349 lines
9.4 KiB
C
/*************************************************************************\
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* Copyright (c) 2013 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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/* $Revision-Id$ */
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/* recWaveform.c - Record Support Routines for Waveform records */
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/*
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* Original Author: Bob Dalesio
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* Date: 7-14-89
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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 "epicsString.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 "dbScan.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 "cantProceed.h"
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#include "menuYesNo.h"
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#define GEN_SIZE_OFFSET
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#include "waveformRecord.h"
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#undef GEN_SIZE_OFFSET
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#include "epicsExport.h"
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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(waveformRecord *, int);
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static long process(waveformRecord *);
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#define special NULL
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#define get_value NULL
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static long cvt_dbaddr(DBADDR *);
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static long get_array_info(DBADDR *, long *, long *);
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static long put_array_info(DBADDR *, long);
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static long get_units(DBADDR *, char *);
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static long get_precision(DBADDR *, long *);
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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(DBADDR *, struct dbr_grDouble *);
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static long get_control_double(DBADDR *, struct dbr_ctrlDouble *);
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#define get_alarm_double NULL
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rset waveformRSET={
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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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};
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epicsExportAddress(rset,waveformRSET);
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struct wfdset { /* waveform 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 read_wf; /*returns: (-1,0)=>(failure,success)*/
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};
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static void monitor(waveformRecord *);
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static long readValue(waveformRecord *);
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static long init_record(waveformRecord *prec, int pass)
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{
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struct wfdset *pdset;
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if (pass==0){
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if (prec->nelm <= 0)
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prec->nelm = 1;
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if (prec->ftvl > DBF_ENUM)
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prec->ftvl = DBF_UCHAR;
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prec->bptr = callocMustSucceed(prec->nelm, dbValueSize(prec->ftvl),
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"waveform calloc failed");
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if (prec->nelm == 1) {
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prec->nord = 1;
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} else {
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prec->nord = 0;
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}
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return 0;
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}
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if (prec->siml.type == CONSTANT) {
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recGblInitConstantLink(&prec->siml,DBF_USHORT,&prec->simm);
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}
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/* must have dset defined */
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if (!(pdset = (struct wfdset *)(prec->dset))) {
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recGblRecordError(S_dev_noDSET,(void *)prec,"wf: init_record");
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return S_dev_noDSET;
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}
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/* must have read_wf function defined */
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if ((pdset->number < 5) || (pdset->read_wf == NULL)) {
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recGblRecordError(S_dev_missingSup,(void *)prec,"wf: init_record");
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return S_dev_missingSup;
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}
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if (! pdset->init_record) return 0;
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return (*pdset->init_record)(prec);
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}
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static long process(waveformRecord *prec)
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{
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struct wfdset *pdset = (struct wfdset *)(prec->dset);
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unsigned char pact=prec->pact;
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if ((pdset==NULL) || (pdset->read_wf==NULL)) {
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prec->pact=TRUE;
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recGblRecordError(S_dev_missingSup, (void *)prec, "read_wf");
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return S_dev_missingSup;
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}
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if (pact && prec->busy) return 0;
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readValue(prec); /* read the new value */
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if (!pact && prec->pact) return 0;
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prec->pact = TRUE;
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prec->udf = FALSE;
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recGblGetTimeStamp(prec);
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monitor(prec);
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/* process the forward scan link record */
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recGblFwdLink(prec);
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prec->pact=FALSE;
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return 0;
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}
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static long cvt_dbaddr(DBADDR *paddr)
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{
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waveformRecord *prec = (waveformRecord *) paddr->precord;
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paddr->no_elements = prec->nelm;
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paddr->field_type = prec->ftvl;
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paddr->field_size = dbValueSize(prec->ftvl);
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paddr->dbr_field_type = prec->ftvl;
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return 0;
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}
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static long get_array_info(DBADDR *paddr, long *no_elements, long *offset)
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{
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waveformRecord *prec = (waveformRecord *) paddr->precord;
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paddr->pfield = prec->bptr;
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*no_elements = prec->nord;
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*offset = 0;
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return 0;
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}
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static long put_array_info(DBADDR *paddr, long nNew)
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{
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waveformRecord *prec = (waveformRecord *) paddr->precord;
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prec->nord = nNew;
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if (prec->nord > prec->nelm)
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prec->nord = prec->nelm;
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db_post_events(prec, &prec->nord, DBE_VALUE | DBE_LOG);
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return 0;
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}
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#define indexof(field) waveformRecord##field
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static long get_units(DBADDR *paddr, char *units)
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{
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waveformRecord *prec = (waveformRecord *) paddr->precord;
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switch (dbGetFieldIndex(paddr)) {
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case indexof(VAL):
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if (prec->ftvl == DBF_STRING || prec->ftvl == DBF_ENUM)
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break;
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case indexof(HOPR):
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case indexof(LOPR):
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strncpy(units,prec->egu,DB_UNITS_SIZE);
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}
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return 0;
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}
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static long get_precision(DBADDR *paddr, long *precision)
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{
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waveformRecord *prec = (waveformRecord *) paddr->precord;
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*precision = prec->prec;
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if (dbGetFieldIndex(paddr) != indexof(VAL))
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recGblGetPrec(paddr, precision);
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return 0;
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}
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static long get_graphic_double(DBADDR *paddr, struct dbr_grDouble *pgd)
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{
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waveformRecord *prec = (waveformRecord *) paddr->precord;
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switch (dbGetFieldIndex(paddr)) {
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case indexof(VAL):
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pgd->upper_disp_limit = prec->hopr;
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pgd->lower_disp_limit = prec->lopr;
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break;
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case indexof(BUSY):
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pgd->upper_disp_limit = 1;
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pgd->lower_disp_limit = 0;
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break;
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case indexof(NORD):
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pgd->upper_disp_limit = prec->nelm;
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pgd->lower_disp_limit = 0;
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break;
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default:
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recGblGetGraphicDouble(paddr, pgd);
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}
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return 0;
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}
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static long get_control_double(DBADDR *paddr, struct dbr_ctrlDouble *pcd)
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{
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waveformRecord *prec = (waveformRecord *) paddr->precord;
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switch (dbGetFieldIndex(paddr)) {
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case indexof(VAL):
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pcd->upper_ctrl_limit = prec->hopr;
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pcd->lower_ctrl_limit = prec->lopr;
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break;
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case indexof(BUSY):
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pcd->upper_ctrl_limit = 1;
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pcd->lower_ctrl_limit = 0;
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break;
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case indexof(NORD):
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pcd->upper_ctrl_limit = prec->nelm;
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pcd->lower_ctrl_limit = 0;
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break;
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default:
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recGblGetControlDouble(paddr, pcd);
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}
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return 0;
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}
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static void monitor(waveformRecord *prec)
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{
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unsigned short monitor_mask = 0;
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unsigned int hash = 0;
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monitor_mask = recGblResetAlarms(prec);
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if (prec->mpst == waveformPOST_Always)
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monitor_mask |= DBE_VALUE;
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if (prec->apst == waveformPOST_Always)
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monitor_mask |= DBE_LOG;
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/* Calculate hash if we are interested in OnChange events. */
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if ((prec->mpst == waveformPOST_OnChange) ||
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(prec->apst == waveformPOST_OnChange)) {
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hash = epicsMemHash((char *)prec->bptr,
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prec->nord * dbValueSize(prec->ftvl), 0);
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/* Only post OnChange values if the hash is different. */
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if (hash != prec->hash) {
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if (prec->mpst == waveformPOST_OnChange)
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monitor_mask |= DBE_VALUE;
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if (prec->apst == waveformPOST_OnChange)
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monitor_mask |= DBE_LOG;
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/* Store hash for next process. */
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prec->hash = hash;
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/* Post HASH. */
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db_post_events(prec, &prec->hash, DBE_VALUE);
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}
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}
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if (monitor_mask) {
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db_post_events(prec, &prec->val, monitor_mask);
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}
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}
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static long readValue(waveformRecord *prec)
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{
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long status;
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struct wfdset *pdset = (struct wfdset *) prec->dset;
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if (prec->pact == TRUE){
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return (*pdset->read_wf)(prec);
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}
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status = dbGetLink(&(prec->siml), DBR_ENUM, &(prec->simm),0,0);
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if (status)
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return status;
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if (prec->simm == menuYesNoNO){
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epicsUInt32 nord = prec->nord;
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status = (*pdset->read_wf)(prec);
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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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return status;
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}
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if (prec->simm == menuYesNoYES){
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long nRequest = prec->nelm;
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status = dbGetLink(&(prec->siol), prec->ftvl, prec->bptr, 0, &nRequest);
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/* nord set only for db links: needed for old db_access */
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if (prec->siol.type != CONSTANT) {
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prec->nord = nRequest;
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db_post_events(prec, &prec->nord, DBE_VALUE | DBE_LOG);
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if (status == 0)
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prec->udf=FALSE;
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}
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} else {
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recGblSetSevr(prec, SOFT_ALARM, INVALID_ALARM);
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return -1;
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}
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recGblSetSevr(prec, SIMM_ALARM, prec->sims);
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return status;
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}
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