360 lines
9.9 KiB
C
360 lines
9.9 KiB
C
/* recLongin.c */
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/* base/src/rec $Id$ */
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/* recLongin.c - Record Support Routines for Longin records */
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/*
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* Author: Janet Anderson
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* Date: 9/23/91
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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 11-11-91 jba Moved set and reset of alarm stat and sevr to macros
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* .02 02-05-92 jba Changed function arguments from paddr to precord
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* .03 02-28-92 jba Changed get_precision,get_graphic_double,get_control_double
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* .04 02-28-92 jba ANSI C changes
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* .05 04-10-92 jba pact now used to test for asyn processing, not status
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* .06 04-18-92 jba removed process from dev init_record parms
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* .07 06-02-92 jba changed graphic/control limits for hihi,high,low,lolo
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* .08 07-15-92 jba changed VALID_ALARM to INVALID alarm
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* .09 07-16-92 jba added invalid alarm fwd link test and chngd fwd lnk to macro
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* .10 07-21-92 jba changed alarm limits for non val related fields
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* .11 08-06-92 jba New algorithm for calculating analog alarms
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* .12 08-13-92 jba Added simulation processing
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* .13 03-29-94 mcn Converted to Fast 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 "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 "longinRecord.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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#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();
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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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static long get_graphic_double();
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static long get_control_double();
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static long get_alarm_double();
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struct rset longinRSET={
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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 longindset { /* longin 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_longin; /*returns: (-1,0)=>(failure,success)*/
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};
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static void alarm();
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static void monitor();
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static long readValue();
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static long init_record(plongin,pass)
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struct longinRecord *plongin;
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int pass;
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{
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struct longindset *pdset;
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long status;
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if (pass==0) return(0);
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/* longin.siml must be a CONSTANT or a PV_LINK or a DB_LINK */
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if (plongin->siml.type == CONSTANT) {
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recGblInitConstantLink(&plongin->siml,DBF_USHORT,&plongin->simm);
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}
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/* longin.siol must be a CONSTANT or a PV_LINK or a DB_LINK */
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if (plongin->siol.type == CONSTANT) {
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recGblInitConstantLink(&plongin->siol,DBF_LONG,&plongin->sval);
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}
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if(!(pdset = (struct longindset *)(plongin->dset))) {
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recGblRecordError(S_dev_noDSET,(void *)plongin,"longin: init_record");
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return(S_dev_noDSET);
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}
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/* must have read_longin function defined */
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if( (pdset->number < 5) || (pdset->read_longin == NULL) ) {
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recGblRecordError(S_dev_missingSup,(void *)plongin,"longin: 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)(plongin))) return(status);
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}
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return(0);
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}
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static long process(plongin)
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struct longinRecord *plongin;
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{
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struct longindset *pdset = (struct longindset *)(plongin->dset);
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long status;
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unsigned char pact=plongin->pact;
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if( (pdset==NULL) || (pdset->read_longin==NULL) ) {
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plongin->pact=TRUE;
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recGblRecordError(S_dev_missingSup,(void *)plongin,"read_longin");
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return(S_dev_missingSup);
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}
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status=readValue(plongin); /* read the new value */
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/* check if device support set pact */
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if ( !pact && plongin->pact ) return(0);
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plongin->pact = TRUE;
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recGblGetTimeStamp(plongin);
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if (status==0) plongin->udf = FALSE;
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/* check for alarms */
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alarm(plongin);
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/* check event list */
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monitor(plongin);
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/* process the forward scan link record */
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recGblFwdLink(plongin);
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plongin->pact=FALSE;
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return(status);
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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 longinRecord *plongin=(struct longinRecord *)paddr->precord;
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strncpy(units,plongin->egu,DB_UNITS_SIZE);
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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 longinRecord *plongin=(struct longinRecord *)paddr->precord;
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if(paddr->pfield==(void *)&plongin->val
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|| paddr->pfield==(void *)&plongin->hihi
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|| paddr->pfield==(void *)&plongin->high
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|| paddr->pfield==(void *)&plongin->low
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|| paddr->pfield==(void *)&plongin->lolo){
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pgd->upper_disp_limit = plongin->hopr;
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pgd->lower_disp_limit = plongin->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 longinRecord *plongin=(struct longinRecord *)paddr->precord;
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if(paddr->pfield==(void *)&plongin->val
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|| paddr->pfield==(void *)&plongin->hihi
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|| paddr->pfield==(void *)&plongin->high
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|| paddr->pfield==(void *)&plongin->low
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|| paddr->pfield==(void *)&plongin->lolo){
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pcd->upper_ctrl_limit = plongin->hopr;
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pcd->lower_ctrl_limit = plongin->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(paddr,pad)
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struct dbAddr *paddr;
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struct dbr_alDouble *pad;
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{
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struct longinRecord *plongin=(struct longinRecord *)paddr->precord;
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if(paddr->pfield==(void *)&plongin->val){
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pad->upper_alarm_limit = plongin->hihi;
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pad->upper_warning_limit = plongin->high;
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pad->lower_warning_limit = plongin->low;
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pad->lower_alarm_limit = plongin->lolo;
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} else recGblGetAlarmDouble(paddr,pad);
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return(0);
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}
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static void alarm(plongin)
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struct longinRecord *plongin;
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{
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long val;
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long hyst, lalm, hihi, high, low, lolo;
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unsigned short hhsv, llsv, hsv, lsv;
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if(plongin->udf == TRUE ){
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recGblSetSevr(plongin,UDF_ALARM,INVALID_ALARM);
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return;
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}
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hihi = plongin->hihi; lolo = plongin->lolo; high = plongin->high; low = plongin->low;
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hhsv = plongin->hhsv; llsv = plongin->llsv; hsv = plongin->hsv; lsv = plongin->lsv;
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val = plongin->val; hyst = plongin->hyst; lalm = plongin->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(plongin,HIHI_ALARM,plongin->hhsv)) plongin->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(plongin,LOLO_ALARM,plongin->llsv)) plongin->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(plongin,HIGH_ALARM,plongin->hsv)) plongin->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(plongin,LOW_ALARM,plongin->lsv)) plongin->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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plongin->lalm = val;
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return;
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}
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static void monitor(plongin)
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struct longinRecord *plongin;
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{
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unsigned short monitor_mask;
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long delta;
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/* get previous stat and sevr and new stat and sevr*/
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monitor_mask = recGblResetAlarms(plongin);
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/* check for value change */
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delta = plongin->mlst - plongin->val;
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if(delta<0) delta = -delta;
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if (delta > plongin->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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plongin->mlst = plongin->val;
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}
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/* check for archive change */
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delta = plongin->alst - plongin->val;
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if(delta<0) delta = -delta;
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if (delta > plongin->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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plongin->alst = plongin->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(plongin,&plongin->val,monitor_mask);
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}
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return;
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}
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static long readValue(plongin)
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struct longinRecord *plongin;
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{
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long status;
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struct longindset *pdset = (struct longindset *) (plongin->dset);
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if (plongin->pact == TRUE){
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status=(*pdset->read_longin)(plongin);
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return(status);
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}
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status=dbGetLink(&(plongin->siml),DBR_USHORT, &(plongin->simm),0,0);
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if (status)
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return(status);
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if (plongin->simm == NO){
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status=(*pdset->read_longin)(plongin);
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return(status);
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}
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if (plongin->simm == YES){
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status=dbGetLink(&(plongin->siol),DBR_LONG,
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&(plongin->sval),0,0);
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if (status==0) {
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plongin->val=plongin->sval;
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plongin->udf=FALSE;
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}
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} else {
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status=-1;
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recGblSetSevr(plongin,SOFT_ALARM,INVALID_ALARM);
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return(status);
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}
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recGblSetSevr(plongin,SIMM_ALARM,plongin->sims);
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return(status);
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}
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