343 lines
10 KiB
C
343 lines
10 KiB
C
/* recWaveform.c */
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/* base/src/rec $Id$ */
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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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* Current Author: Marty Kraimer
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* Date: 7-14-89
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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 11-27-89 lrd using one more buffer entry than allocated
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* .02 11-27-89 lrd throttle on monitor requests
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* .03 02-27-90 lrd handle character value links for Joerger
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* digitizer (convert to short array for access
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* .04 03-05-90 lrd add averaging of entire waveforms
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* .05 04-02-90 ba/lrd fix the joerger processing and
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* add get_a_byte macro
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* fix the determination of buff_size
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* .06 04-11-90 lrd make locals static
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* .07 05-02-90 lrd fix mdct so that it would remain 0 on the
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* pass where the monitors are sent
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* .08 05-08-90 ba mdct is never equal to mcnt during record pro-
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* cessing, causing some code never to run. Fix
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* is to check (mdct==mcnt || mdct==0) to indicate
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* first time through an averaging loop.
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* .09 07-26-90 lrd fixed the N-to-1 character waveformion
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* value was not initialized
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* .10 10-11-90 mrk Made changes for new record support
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* .11 11-11-91 jba Moved set and reset of alarm stat and sevr to macros
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* .12 12-18-91 jba Changed E_IO_INTERRUPT to SCAN_IO_EVENT, added dbScan.h
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* .13 02-05-92 jba Changed function arguments from paddr to precord
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* .14 02-28-92 jba Changed get_precision,get_graphic_double,get_control_double
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* .15 02-28-92 jba ANSI C changes
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* .16 04-10-92 jba pact now used to test for asyn processing, not status
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* .17 04-18-92 jba removed process from dev init_record parms
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* .18 07-16-92 jba added invalid alarm fwd link test and chngd fwd lnk to macro
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* .19 08-14-92 jba Added simulation processing
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* .20 09-14-92 jba nord set only for db links
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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 "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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#define GEN_SIZE_OFFSET
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#include "waveformRecord.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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static long cvt_dbaddr();
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static long get_array_info();
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static long put_array_info();
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static long get_units();
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static long get_precision();
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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 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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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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/*sizes of field types*/
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static int sizeofTypes[] = {0,1,1,2,2,4,4,4,8,2};
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static void monitor();
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static long readValue();
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static long init_record(pwf,pass)
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struct waveformRecord *pwf;
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int pass;
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{
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struct wfdset *pdset;
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long status;
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if (pass==0){
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if(pwf->nelm<=0) pwf->nelm=1;
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if(pwf->ftvl == 0) {
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pwf->bptr = (char *)calloc(pwf->nelm,MAX_STRING_SIZE);
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} else {
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if(pwf->ftvl>DBF_ENUM) pwf->ftvl=2;
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pwf->bptr = (char *)calloc(pwf->nelm,sizeofTypes[pwf->ftvl]);
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}
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if(pwf->nelm==1) {
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pwf->nord = 1;
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} else {
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pwf->nord = 0;
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}
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return(0);
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}
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/* wf.siml must be a CONSTANT or a PV_LINK or a DB_LINK */
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if (pwf->siml.type == CONSTANT) {
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recGblInitConstantLink(&pwf->siml,DBF_USHORT,&pwf->simm);
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}
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/* must have dset defined */
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if(!(pdset = (struct wfdset *)(pwf->dset))) {
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recGblRecordError(S_dev_noDSET,(void *)pwf,"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 *)pwf,"wf: init_record");
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return(S_dev_missingSup);
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}
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if( pdset->init_record ) {
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if((status=(*pdset->init_record)(pwf))) return(status);
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}
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return(0);
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}
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static long process(pwf)
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struct waveformRecord *pwf;
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{
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struct wfdset *pdset = (struct wfdset *)(pwf->dset);
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long status;
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unsigned char pact=pwf->pact;
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if( (pdset==NULL) || (pdset->read_wf==NULL) ) {
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pwf->pact=TRUE;
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recGblRecordError(S_dev_missingSup,(void *)pwf,"read_wf");
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return(S_dev_missingSup);
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}
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if ( pact && pwf->busy ) return(0);
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status=readValue(pwf); /* read the new value */
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/* check if device support set pact */
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if ( !pact && pwf->pact ) return(0);
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pwf->pact = TRUE;
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pwf->udf=FALSE;
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recGblGetTimeStamp(pwf);
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monitor(pwf);
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/* process the forward scan link record */
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recGblFwdLink(pwf);
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pwf->pact=FALSE;
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return(0);
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}
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static long cvt_dbaddr(paddr)
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struct dbAddr *paddr;
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{
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struct waveformRecord *pwf=(struct waveformRecord *)paddr->precord;
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paddr->pfield = (void *)(pwf->bptr);
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paddr->no_elements = pwf->nelm;
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paddr->field_type = pwf->ftvl;
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if(pwf->ftvl==0) paddr->field_size = MAX_STRING_SIZE;
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else paddr->field_size = sizeofTypes[pwf->ftvl];
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paddr->dbr_field_type = pwf->ftvl;
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return(0);
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}
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static long get_array_info(paddr,no_elements,offset)
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struct dbAddr *paddr;
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long *no_elements;
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long *offset;
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{
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struct waveformRecord *pwf=(struct waveformRecord *)paddr->precord;
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*no_elements = pwf->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(paddr,nNew)
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struct dbAddr *paddr;
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long nNew;
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{
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struct waveformRecord *pwf=(struct waveformRecord *)paddr->precord;
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pwf->nord = nNew;
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if(pwf->nord > pwf->nelm) pwf->nord = pwf->nelm;
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return(0);
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}
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static long get_units(paddr,units)
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struct dbAddr *paddr;
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char *units;
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{
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struct waveformRecord *pwf=(struct waveformRecord *)paddr->precord;
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strncpy(units,pwf->egu,DB_UNITS_SIZE);
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return(0);
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}
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static long get_precision(paddr,precision)
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struct dbAddr *paddr;
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long *precision;
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{
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struct waveformRecord *pwf=(struct waveformRecord *)paddr->precord;
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*precision = pwf->prec;
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if(paddr->pfield==(void *)pwf->bptr) return(0);
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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(paddr,pgd)
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struct dbAddr *paddr;
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struct dbr_grDouble *pgd;
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{
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struct waveformRecord *pwf=(struct waveformRecord *)paddr->precord;
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if(paddr->pfield==(void *)pwf->bptr){
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pgd->upper_disp_limit = pwf->hopr;
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pgd->lower_disp_limit = pwf->lopr;
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} else recGblGetGraphicDouble(paddr,pgd);
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return(0);
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}
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static long get_control_double(paddr,pcd)
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struct dbAddr *paddr;
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struct dbr_ctrlDouble *pcd;
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{
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struct waveformRecord *pwf=(struct waveformRecord *)paddr->precord;
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if(paddr->pfield==(void *)pwf->bptr){
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pcd->upper_ctrl_limit = pwf->hopr;
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pcd->lower_ctrl_limit = pwf->lopr;
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} else recGblGetControlDouble(paddr,pcd);
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return(0);
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}
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static void monitor(pwf)
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struct waveformRecord *pwf;
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{
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unsigned short monitor_mask;
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monitor_mask = recGblResetAlarms(pwf);
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monitor_mask |= (DBE_LOG|DBE_VALUE);
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if(monitor_mask) db_post_events(pwf,pwf->bptr,monitor_mask);
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return;
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}
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static long readValue(pwf)
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struct waveformRecord *pwf;
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{
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long status;
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long nRequest;
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struct wfdset *pdset = (struct wfdset *) (pwf->dset);
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if (pwf->pact == TRUE){
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status=(*pdset->read_wf)(pwf);
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return(status);
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}
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status=dbGetLink(&(pwf->siml), DBR_ENUM,&(pwf->simm),0,0);
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if (status)
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return(status);
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if (pwf->simm == NO){
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status=(*pdset->read_wf)(pwf);
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return(status);
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}
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if (pwf->simm == YES){
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nRequest=pwf->nelm;
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status=dbGetLink(&(pwf->siol),
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pwf->ftvl,pwf->bptr,0,&nRequest);
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/* nord set only for db links: needed for old db_access */
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if (pwf->siol.type != CONSTANT ){
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pwf->nord = nRequest;
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if (status==0) pwf->udf=FALSE;
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}
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} else {
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status=-1;
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recGblSetSevr(pwf,SOFT_ALARM,INVALID_ALARM);
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return(status);
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}
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recGblSetSevr(pwf,SIMM_ALARM,pwf->sims);
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return(status);
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}
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