390 lines
11 KiB
C
390 lines
11 KiB
C
/*************************************************************************\
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* Copyright (c) 2002 Southeastern Universities Research Association, as
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* Operator of Thomas Jefferson National Accelerator Facility.
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* SPDX-License-Identifier: EPICS
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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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/* recAao.c */
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/* recAao.c - Record Support Routines for Array Analog Out records */
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/*
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* Original Author: Dave Barker
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*
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* C E B A F
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*
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* Continuous Electron Beam Accelerator Facility
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* Newport News, Virginia, USA.
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*
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* Copyright SURA CEBAF 1993.
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*
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* Current Author: Dirk Zimoch <dirk.zimoch@psi.ch>
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* Date: 27-MAY-2010
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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 "callback.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 "special.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 "aaoRecord.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(struct dbCommon *, int);
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static long process(struct dbCommon *);
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static long special(DBADDR *, int);
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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(const 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 aaoRSET={
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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,aaoRSET);
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static void monitor(aaoRecord *);
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static long writeValue(aaoRecord *);
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static long init_record(struct dbCommon *pcommon, int pass)
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{
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struct aaoRecord *prec = (struct aaoRecord *)pcommon;
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aaodset *pdset = (aaodset *)(prec->dset);
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long status;
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/* must have dset defined */
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if (!pdset) {
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recGblRecordError(S_dev_noDSET, prec, "aao: init_record");
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return S_dev_noDSET;
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}
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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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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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/* we must call pdset->init_record in pass 0
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because it may set prec->bptr which must
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not change after links are established before pass 1
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*/
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if (pdset->common.init_record) {
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/* init_record may set the bptr to point to the data */
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if ((status = pdset->common.init_record(pcommon)))
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return status;
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}
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if (!prec->bptr) {
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/* device support did not allocate memory so we must do it */
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prec->bptr = callocMustSucceed(prec->nelm, dbValueSize(prec->ftvl),
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"aao: buffer calloc failed");
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}
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return 0;
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}
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recGblInitSimm(pcommon, &prec->sscn, &prec->oldsimm, &prec->simm, &prec->siml);
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/* must have write_aao function defined */
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if (pdset->common.number < 5 || pdset->write_aao == NULL) {
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recGblRecordError(S_dev_missingSup, prec, "aao: init_record");
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return S_dev_missingSup;
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}
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return 0;
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}
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static long process(struct dbCommon *pcommon)
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{
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struct aaoRecord *prec = (struct aaoRecord *)pcommon;
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aaodset *pdset = (aaodset *)(prec->dset);
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long status;
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unsigned char pact = prec->pact;
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if (pdset == NULL || pdset->write_aao == NULL) {
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prec->pact = TRUE;
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recGblRecordError(S_dev_missingSup, prec, "write_aao");
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return S_dev_missingSup;
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}
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if ( !pact ) {
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prec->udf = FALSE;
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/* Update the timestamp before writing output values so it
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* will be up to date if any downstream records fetch it via TSEL */
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recGblGetTimeStampSimm(prec, prec->simm, NULL);
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}
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status = writeValue(prec); /* write the data */
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if (!pact && prec->pact) return 0;
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prec->pact = TRUE;
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if ( pact ) {
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/* Update timestamp again for asynchronous devices */
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recGblGetTimeStampSimm(prec, prec->simm, NULL);
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}
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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 status;
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}
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static long special(DBADDR *paddr, int after)
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{
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aaoRecord *prec = (aaoRecord *)(paddr->precord);
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int special_type = paddr->special;
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switch(special_type) {
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case(SPC_MOD):
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if (dbGetFieldIndex(paddr) == aaoRecordSIMM) {
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if (!after)
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recGblSaveSimm(prec->sscn, &prec->oldsimm, prec->simm);
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else
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recGblCheckSimm((dbCommon *)prec, &prec->sscn, prec->oldsimm, prec->simm);
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return(0);
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}
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default:
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recGblDbaddrError(S_db_badChoice, paddr, "aao: special");
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return(S_db_badChoice);
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}
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}
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static long cvt_dbaddr(DBADDR *paddr)
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{
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aaoRecord *prec = (aaoRecord *)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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aaoRecord *prec = (aaoRecord *)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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aaoRecord *prec = (aaoRecord *)paddr->precord;
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epicsUInt32 nord = prec->nord;
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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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if (nord != prec->nord)
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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) aaoRecord##field
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static long get_units(DBADDR *paddr, char *units)
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{
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aaoRecord *prec = (aaoRecord *)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(const DBADDR *paddr, long *precision)
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{
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aaoRecord *prec = (aaoRecord *)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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aaoRecord *prec = (aaoRecord *)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(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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aaoRecord *prec = (aaoRecord *)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(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(aaoRecord *prec)
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{
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unsigned short monitor_mask;
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unsigned int hash = 0;
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monitor_mask = recGblResetAlarms(prec);
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if (prec->mpst == aaoPOST_Always)
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monitor_mask |= DBE_VALUE;
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if (prec->apst == aaoPOST_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 == aaoPOST_OnChange) ||
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(prec->apst == aaoPOST_OnChange)) {
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hash = epicsMemHash(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 == aaoPOST_OnChange)
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monitor_mask |= DBE_VALUE;
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if (prec->apst == aaoPOST_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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static long writeValue(aaoRecord *prec)
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{
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aaodset *pdset = (aaodset *) prec->dset;
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long status = 0;
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if (!prec->pact) {
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status = recGblGetSimm((dbCommon *)prec, &prec->sscn, &prec->oldsimm, &prec->simm, &prec->siml);
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if (status) return status;
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}
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switch (prec->simm) {
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case menuYesNoNO:
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status = pdset->write_aao(prec);
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break;
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case menuYesNoYES: {
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recGblSetSevr(prec, SIMM_ALARM, prec->sims);
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if (prec->pact || (prec->sdly < 0.)) {
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/* Device support is responsible for buffer
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which might be write-only so we may not be
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allowed to call dbPutLink on it.
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Maybe also device support has an advanced
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simulation mode.
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Thus call device now.
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Writing through SIOL is handled in Soft Channel Device Support
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*/
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status = pdset->write_aao(prec);
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prec->pact = FALSE;
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} else { /* !prec->pact && delay >= 0. */
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epicsCallback *pvt = prec->simpvt;
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if (!pvt) {
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pvt = calloc(1, sizeof(epicsCallback)); /* very lazy allocation of callback structure */
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prec->simpvt = pvt;
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}
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if (pvt) callbackRequestProcessCallbackDelayed(pvt, prec->prio, prec, prec->sdly);
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prec->pact = TRUE;
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}
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break;
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}
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default:
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recGblSetSevr(prec, SOFT_ALARM, INVALID_ALARM);
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status = -1;
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}
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return status;
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}
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