158 lines
3.9 KiB
C
158 lines
3.9 KiB
C
/*************************************************************************\
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* Copyright (c) 2012 UChicago Argonne LLC, as Operator of Argonne
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* National Laboratory.
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* Copyright (c) 2002 The Regents of the University of California, as
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* Operator of Los Alamos National Laboratory.
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* EPICS BASE is distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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\*************************************************************************/
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/*
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* Original Author: Bob Dalesio
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* Date: 12-20-88
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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 "errMdef.h"
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#include "epicsTypes.h"
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#include "recSup.h"
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#include "recGbl.h"
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#include "dbCommon.h"
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#define GEN_SIZE_OFFSET
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#include "fanoutRecord.h"
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#undef GEN_SIZE_OFFSET
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#include "epicsExport.h"
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#define NLINKS 16
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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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#define special NULL
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#define get_value NULL
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#define cvt_dbaddr NULL
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#define get_array_info NULL
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#define put_array_info NULL
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#define get_units NULL
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#define get_precision NULL
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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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#define get_graphic_double NULL
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#define get_control_double NULL
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#define get_alarm_double NULL
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rset fanoutRSET = {
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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,fanoutRSET);
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static long init_record(struct dbCommon *pcommon, int pass)
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{
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struct fanoutRecord *prec = (struct fanoutRecord *)pcommon;
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if (pass == 0)
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return 0;
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recGblInitConstantLink(&prec->sell, DBF_USHORT, &prec->seln);
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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 fanoutRecord *prec = (struct fanoutRecord *)pcommon;
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struct link *plink;
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epicsUInt16 seln, events;
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int i;
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epicsUInt16 oldn = prec->seln;
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prec->pact = TRUE;
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/* fetch link selection */
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dbGetLink(&prec->sell, DBR_USHORT, &prec->seln, 0, 0);
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seln = prec->seln;
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switch (prec->selm) {
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case fanoutSELM_All:
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plink = &prec->lnk0;
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for (i = 0; i < NLINKS; i++, plink++) {
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dbScanFwdLink(plink);
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}
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break;
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case fanoutSELM_Specified:
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i = seln + prec->offs;
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if (i < 0 || i >= NLINKS) {
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recGblSetSevr(prec, SOFT_ALARM, INVALID_ALARM);
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break;
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}
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plink = &prec->lnk0 + i;
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dbScanFwdLink(plink);
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break;
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case fanoutSELM_Mask:
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i = prec->shft;
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if (i < -15 || i > 15) {
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/* Shifting by more than the number of bits in the
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* value produces undefined behavior in C */
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recGblSetSevr(prec, SOFT_ALARM, INVALID_ALARM);
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break;
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}
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seln = (i >= 0) ? seln >> i : seln << -i;
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if (seln == 0)
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break;
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plink = &prec->lnk0;
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for (i = 0; i < NLINKS; i++, seln >>= 1, plink++) {
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if (seln & 1)
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dbScanFwdLink(plink);
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}
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break;
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default:
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recGblSetSevr(prec, SOFT_ALARM, INVALID_ALARM);
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}
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prec->udf = FALSE;
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recGblGetTimeStamp(prec);
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/* post monitors */
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events = recGblResetAlarms(prec);
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if (events)
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db_post_events(prec, &prec->val, events);
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if (prec->seln != oldn)
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db_post_events(prec, &prec->seln, events | DBE_VALUE | DBE_LOG);
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/* finish off */
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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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