289 lines
7.2 KiB
C
289 lines
7.2 KiB
C
/*************************************************************************\
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* Copyright (c) 2002 The University of Chicago, 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 Versions 3.13.7
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* and higher are 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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/* 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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#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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#include "recGbl.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();
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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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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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/*sizes of field types*/
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static int sizeofTypes[] = {MAX_STRING_SIZE,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(waveformRecord *pwf, 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 (pwf->nelm <= 0)
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pwf->nelm = 1;
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if (pwf->ftvl > DBF_ENUM)
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pwf->ftvl = 2;
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pwf->bptr = calloc(pwf->nelm, sizeofTypes[pwf->ftvl]);
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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) return 0;
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return (*pdset->init_record)(pwf);
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}
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static long process(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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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(DBADDR *paddr)
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{
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waveformRecord *pwf = (waveformRecord *) paddr->precord;
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paddr->pfield = pwf->bptr;
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paddr->no_elements = pwf->nelm;
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paddr->field_type = pwf->ftvl;
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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(DBADDR *paddr, long *no_elements, long *offset)
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{
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waveformRecord *pwf = (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(DBADDR *paddr, long nNew)
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{
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waveformRecord *pwf = (waveformRecord *) paddr->precord;
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pwf->nord = nNew;
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if (pwf->nord > pwf->nelm)
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pwf->nord = pwf->nelm;
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return 0;
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}
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static long get_units(DBADDR *paddr, char *units)
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{
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waveformRecord *pwf = (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(DBADDR *paddr, long *precision)
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{
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waveformRecord *pwf = (waveformRecord *) paddr->precord;
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int fieldIndex = dbGetFieldIndex(paddr);
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*precision = pwf->prec;
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if (fieldIndex != waveformRecordVAL)
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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 *pwf = (waveformRecord *) paddr->precord;
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if (dbGetFieldIndex(paddr) == waveformRecordVAL) {
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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
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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(DBADDR *paddr, struct dbr_ctrlDouble *pcd)
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{
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waveformRecord *pwf = (waveformRecord *) paddr->precord;
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if (dbGetFieldIndex(paddr) == waveformRecordVAL) {
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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
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recGblGetControlDouble(paddr, pcd);
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return 0;
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}
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static void monitor(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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db_post_events(pwf, pwf->bptr, monitor_mask);
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return;
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}
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static long readValue(waveformRecord *pwf)
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{
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long status;
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struct wfdset *pdset = (struct wfdset *) pwf->dset;
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if (pwf->pact == TRUE){
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return (*pdset->read_wf)(pwf);
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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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return (*pdset->read_wf)(pwf);
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}
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if (pwf->simm == YES){
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long nRequest = pwf->nelm;
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status = dbGetLink(&(pwf->siol), 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)
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pwf->udf=FALSE;
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}
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} else {
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recGblSetSevr(pwf, SOFT_ALARM, INVALID_ALARM);
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return -1;
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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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