274 lines
7.4 KiB
C
274 lines
7.4 KiB
C
/* xxxRecord.c */
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/* Example record support module */
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "epicsMath.h"
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#include "alarm.h"
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#include "dbAccess.h"
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#include "recGbl.h"
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#include "dbEvent.h"
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#include "dbDefs.h"
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#include "dbAccess.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 "special.h"
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#define GEN_SIZE_OFFSET
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#include "xxxRecord.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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#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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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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static long get_alarm_double(DBADDR *, struct dbr_alDouble *);
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rset xxxRSET={
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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,xxxRSET);
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typedef struct xxxset { /* xxx input 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_xxx;
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}xxxdset;
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static void checkAlarms(xxxRecord *prec);
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static void monitor(xxxRecord *prec);
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static long init_record(struct dbCommon *pcommon, int pass)
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{
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xxxRecord *prec = (xxxRecord *)pcommon;
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xxxdset *pdset;
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long status;
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if (pass==0) return(0);
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if(!(pdset = (xxxdset *)(prec->dset))) {
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recGblRecordError(S_dev_noDSET,(void *)prec,"xxx: init_record");
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return(S_dev_noDSET);
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}
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/* must have read_xxx function defined */
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if( (pdset->number < 5) || (pdset->read_xxx == NULL) ) {
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recGblRecordError(S_dev_missingSup,(void *)prec,"xxx: 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)(prec))) return(status);
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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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xxxRecord *prec = (xxxRecord *)pcommon;
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xxxdset *pdset = (xxxdset *)(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->read_xxx==NULL) ) {
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prec->pact=TRUE;
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recGblRecordError(S_dev_missingSup,(void *)prec,"read_xxx");
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return(S_dev_missingSup);
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}
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/* pact must not be set until after calling device support */
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status=(*pdset->read_xxx)(prec);
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/* check if device support set pact */
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if ( !pact && prec->pact ) return(0);
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prec->pact = TRUE;
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recGblGetTimeStamp(prec);
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/* check for alarms */
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checkAlarms(prec);
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/* check event list */
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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 get_units(DBADDR *paddr, char *units)
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{
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xxxRecord *prec=(xxxRecord *)paddr->precord;
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strncpy(units,prec->egu,DB_UNITS_SIZE);
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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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xxxRecord *prec=(xxxRecord *)paddr->precord;
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*precision = prec->prec;
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if(paddr->pfield == (void *)&prec->val) 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(DBADDR *paddr,struct dbr_grDouble *pgd)
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{
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xxxRecord *prec=(xxxRecord *)paddr->precord;
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int fieldIndex = dbGetFieldIndex(paddr);
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if(fieldIndex == xxxRecordVAL
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|| fieldIndex == xxxRecordHIHI
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|| fieldIndex == xxxRecordHIGH
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|| fieldIndex == xxxRecordLOW
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|| fieldIndex == xxxRecordLOLO
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|| fieldIndex == xxxRecordHOPR
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|| fieldIndex == xxxRecordLOPR) {
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pgd->upper_disp_limit = prec->hopr;
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pgd->lower_disp_limit = prec->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(DBADDR *paddr,struct dbr_ctrlDouble *pcd)
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{
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xxxRecord *prec=(xxxRecord *)paddr->precord;
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int fieldIndex = dbGetFieldIndex(paddr);
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if(fieldIndex == xxxRecordVAL
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|| fieldIndex == xxxRecordHIHI
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|| fieldIndex == xxxRecordHIGH
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|| fieldIndex == xxxRecordLOW
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|| fieldIndex == xxxRecordLOLO) {
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pcd->upper_ctrl_limit = prec->hopr;
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pcd->lower_ctrl_limit = prec->lopr;
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} else recGblGetControlDouble(paddr,pcd);
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return(0);
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}
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static long get_alarm_double(DBADDR *paddr,struct dbr_alDouble *pad)
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{
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xxxRecord *prec=(xxxRecord *)paddr->precord;
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int fieldIndex = dbGetFieldIndex(paddr);
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if(fieldIndex == xxxRecordVAL) {
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pad->upper_alarm_limit = prec->hhsv ? prec->hihi : epicsNAN;
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pad->upper_warning_limit = prec->hsv ? prec->high : epicsNAN;
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pad->lower_warning_limit = prec->lsv ? prec->low : epicsNAN;
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pad->lower_alarm_limit = prec->llsv ? prec->lolo : epicsNAN;
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} else recGblGetAlarmDouble(paddr,pad);
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return(0);
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}
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static void checkAlarms(xxxRecord *prec)
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{
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double val, hyst, lalm;
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float hihi, high, low, lolo;
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unsigned short hhsv, llsv, hsv, lsv;
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if(prec->udf == TRUE ){
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recGblSetSevr(prec,UDF_ALARM,INVALID_ALARM);
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return;
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}
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hihi = prec->hihi; lolo = prec->lolo; high = prec->high; low = prec->low;
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hhsv = prec->hhsv; llsv = prec->llsv; hsv = prec->hsv; lsv = prec->lsv;
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val = prec->val; hyst = prec->hyst; lalm = prec->lalm;
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/* alarm condition hihi */
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if (hhsv && (val >= hihi || ((lalm==hihi) && (val >= hihi-hyst)))){
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if (recGblSetSevr(prec,HIHI_ALARM,prec->hhsv)) prec->lalm = hihi;
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return;
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}
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/* alarm condition lolo */
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if (llsv && (val <= lolo || ((lalm==lolo) && (val <= lolo+hyst)))){
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if (recGblSetSevr(prec,LOLO_ALARM,prec->llsv)) prec->lalm = lolo;
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return;
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}
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/* alarm condition high */
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if (hsv && (val >= high || ((lalm==high) && (val >= high-hyst)))){
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if (recGblSetSevr(prec,HIGH_ALARM,prec->hsv)) prec->lalm = high;
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return;
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}
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/* alarm condition low */
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if (lsv && (val <= low || ((lalm==low) && (val <= low+hyst)))){
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if (recGblSetSevr(prec,LOW_ALARM,prec->lsv)) prec->lalm = low;
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return;
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}
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/* we get here only if val is out of alarm by at least hyst */
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prec->lalm = val;
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return;
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}
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static void monitor(xxxRecord *prec)
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{
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unsigned short monitor_mask;
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double delta;
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monitor_mask = recGblResetAlarms(prec);
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/* check for value change */
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delta = prec->mlst - prec->val;
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if(delta<0.0) delta = -delta;
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if (delta > prec->mdel) {
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/* post events for value change */
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monitor_mask |= DBE_VALUE;
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/* update last value monitored */
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prec->mlst = prec->val;
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}
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/* check for archive change */
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delta = prec->alst - prec->val;
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if(delta<0.0) delta = -delta;
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if (delta > prec->adel) {
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/* post events on value field for archive change */
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monitor_mask |= DBE_LOG;
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/* update last archive value monitored */
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prec->alst = prec->val;
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}
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/* send out monitors connected to the value field */
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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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return;
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}
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