452 lines
12 KiB
C
452 lines
12 KiB
C
/* recAo.c */
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/* share/src/rec $Id$ */
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/* recAo.c - Record Support Routines for Analog Output records
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*
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* Author: Bob Dalesio
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* Date: 7-9-87
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*
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* Control System Software for the GTA Project
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*
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* Copyright 1988, 1989, the Regents of the University of California.
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*
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* This software was produced under a U.S. Government contract
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* (W-7405-ENG-36) at the Los Alamos National Laboratory, which is
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* operated by the University of California for the U.S. Department
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* of Energy.
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*
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* Developed by the Controls and Automation Group (AT-8)
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* Accelerator Technology Division
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* Los Alamos National Laboratory
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*
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* Direct inqueries to:
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* Bob Dalesio, AT-8, Mail Stop H820
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* Los Alamos National Laboratory
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* Los Alamos, New Mexico 87545
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* Phone: (505) 667-3414
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* E-mail: dalesio@luke.lanl.gov
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*
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* Modification Log:
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* -----------------
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* .01 09-26-88 lrd interface the Ziomek085 card
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* .02 12-12-88 lrd lock record on entry unlock on exit
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* .03 12-15-88 lrd Process the forward scan link
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* .04 12-23-88 lrd Alarm on locked MAX_LOCKED times
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* .05 01-13-89 lrd deleted db_write_ao
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* .06 01-20-89 lrd fixed vx includes
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* .07 03-03-89 lrd mods for closed loop/supervisory control
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* .08 03-17-89 lrd add read_ao routine and call at initialization
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* .09 03-23-89 lrd convert AB readbacks
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* .10 03-29-89 lrd make hardware errors MAJOR
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* remove hw severity spec from database
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* .11 04-06-89 lrd remove signal conversions
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* .12 05-03-89 lrd removed process mask from arg list
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* .13 05-08-89 lrd fixed init to unlock on return condition
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* .14 05-25-89 lrd added rate of change add incremental/absolute
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* .15 01-31-90 lrd add plc_flag to ab_aodriver
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* .16 03-21-90 lrd add db_post_events for RVAL and RBV
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* .17 04-11-90 lrd make locals static
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* .18 07-27-90 lrd implement the output to a database record
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* .19 10-10-90 mrk extensible record and device support
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*/
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#include <vxWorks.h>
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#include <types.h>
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#include <stdioLib.h>
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#include <lstLib.h>
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#include <alarm.h>
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#include <dbAccess.h>
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#include <dbDefs.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 <link.h>
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#include <special.h>
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#include <recSup.h>
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#include <aoRecord.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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long init_record();
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long process();
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long special();
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long get_precision();
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long get_value();
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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_enum_str NULL
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long get_units();
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long get_graphic_double();
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long get_control_double();
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#define get_enum_strs NULL
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struct rset aoRSET={
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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_precision,
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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_enum_str,
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get_units,
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get_graphic_double,
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get_control_double,
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get_enum_strs };
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struct aodset { /* analog input dset */
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long number;
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DEVSUPFUN 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 write_ao;/*(0,1)=>success and */
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/*(continue, don`t continue) */
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DEVSUPFUN special_linconv;
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};
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/* the following definitions must match those in choiceRec.ascii */
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#define OUTPUT_FULL 0
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#define OUTPUT_INCREMENTAL 1
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/* The following must match the definition in choiceGbl.ascii */
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#define LINEAR 1
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void alarm();
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void convert();
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void monitor();
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static long init_record(pao)
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struct aoRecord *pao;
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{
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struct aodset *pdset;
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long status;
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/* initialize so that first alarm, archive, and monitor get generated*/
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pao->lalm = 1e30;
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pao->alst = 1e30;
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pao->mlst = 1e30;
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if(!(pdset = (struct aodset *)(pao->dset))) {
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recGblRecordError(S_dev_noDSET,pao,"ao: init_record");
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return(S_dev_noDSET);
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}
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/* must have write_ao function defined */
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if( (pdset->number < 6) || (pdset->write_ao ==NULL) ) {
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recGblRecordError(S_dev_missingSup,pao,"ao: 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)(pao,process))) return(status);
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}
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/* get the intial value */
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if ((pao->dol.type == CONSTANT) && (pao->dol.value.value != 0)){
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pao->val = pao->dol.value.value;
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}
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return(0);
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}
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static long process(paddr)
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struct dbAddr *paddr;
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{
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struct aoRecord *pao=(struct aoRecord *)(paddr->precord);
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struct aodset *pdset = (struct aodset *)(pao->dset);
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long status;
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if( (pdset==NULL) || (pdset->write_ao==NULL) ) {
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pao->pact=TRUE;
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recGblRecordError(S_dev_missingSup,pao,"write_ao");
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return(S_dev_missingSup);
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}
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if(pao->pact == FALSE) {
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convert(pao);
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if(pao->oraw != pao->oval) status=(*pdset->write_ao)(pao);
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else status=0;
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} else {
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status=(*pdset->write_ao)(pao); /* write the new value */
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pao->pact = TRUE;
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}
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/* status is one if an asynchronous record is being processed*/
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if(status==1) return(0);
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/* check for alarms */
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alarm(pao);
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/* check event list */
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monitor(pao);
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/* process the forward scan link record */
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if (pao->flnk.type==DB_LINK) dbScanPassive(pao->flnk.value.db_link.pdbAddr);
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pao->pact=FALSE;
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return(status);
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}
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static long special(paddr,after)
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struct dbAddr *paddr;
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int after;
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{
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struct aoRecord *pao = (struct aoRecord *)(paddr->precord);
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struct aodset *pdset = (struct aodset *) (pao->dset);
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int special_type = paddr->special;
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switch(special_type) {
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case(SPC_LINCONV):
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if(pdset->number<6 || !(pdset->special_linconv)) {
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recGblDbaddrError(S_db_noMod,paddr,"ao: special");
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return(S_db_noMod);
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}
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return((*pdset->special_linconv)(pao,after));
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default:
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recGblDbaddrError(S_db_badChoice,paddr,"ao: special");
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return(S_db_badChoice);
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}
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}
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static long get_precision(paddr,precision)
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struct dbAddr *paddr;
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long *precision;
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{
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struct aoRecord *pao=(struct aoRecord *)paddr->precord;
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*precision = pao->prec;
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return(0);
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}
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static long get_value(pao,pvdes)
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struct aoRecord *pao;
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struct valueDes *pvdes;
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{
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pvdes->field_type = DBF_FLOAT;
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pvdes->no_elements=1;
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(float *)(pvdes->pvalue) = &pao->val;
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return(0);
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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 aoRecord *pao=(struct aoRecord *)paddr->precord;
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strncpy(units,pao->egu,sizeof(pao->egu));
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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 aoRecord *pao=(struct aoRecord *)paddr->precord;
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pgd->upper_disp_limit = pao->hopr;
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pgd->lower_disp_limit = pao->lopr;
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pgd->upper_alarm_limit = pao->hihi;
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pgd->upper_warning_limit = pao->high;
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pgd->lower_warning_limit = pao->low;
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pgd->lower_alarm_limit = pao->lolo;
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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 aoRecord *pao=(struct aoRecord *)paddr->precord;
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pcd->upper_ctrl_limit = pao->hopr;
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pcd->lower_ctrl_limit = pao->lopr;
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return(0);
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}
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static void alarm(pao)
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struct aoRecord *pao;
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{
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float ftemp;
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/* if difference is not > hysterisis don't bother */
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ftemp = pao->lalm - pao->val;
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if(ftemp<0.0) ftemp = -ftemp;
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if (ftemp < pao->hyst) return;
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/* alarm condition hihi */
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if (pao->nsev<pao->hhsv){
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if (pao->val > pao->hihi){
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pao->lalm = pao->val;
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pao->nsta = HIHI_ALARM;
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pao->nsev = pao->hhsv;
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return;
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}
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}
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/* alarm condition lolo */
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if (pao->nsev<pao->llsv){
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if (pao->val < pao->lolo){
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pao->lalm = pao->val;
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pao->nsta = LOLO_ALARM;
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pao->nsev = pao->llsv;
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return;
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}
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}
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/* alarm condition high */
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if (pao->nsev<pao->hsv){
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if (pao->val > pao->high){
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pao->lalm = pao->val;
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pao->nsta = HIGH_ALARM;
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pao->nsev =pao->hsv;
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return;
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}
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}
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/* alarm condition lolo */
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if (pao->nsev<pao->lsv){
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if (pao->val < pao->low){
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pao->lalm = pao->val;
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pao->nsta = LOW_ALARM;
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pao->nsev = pao->lsv;
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return;
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}
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}
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return;
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}
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static void monitor(pao)
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struct aoRecord *pao;
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{
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unsigned short monitor_mask;
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float delta;
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short stat,sevr,nsta,nsev;
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/* get previous stat and sevr and new stat and sevr*/
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stat=pao->stat;
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sevr=pao->sevr;
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nsta=pao->nsta;
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nsev=pao->nsev;
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/*set current stat and sevr*/
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pao->stat = nsta;
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pao->sevr = nsev;
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pao->nsta = 0;
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pao->nsev = 0;
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/* anyone waiting for an event on this record */
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if (pao->mlis.count == 0) return;
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/* Flags which events to fire on the value field */
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monitor_mask = 0;
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/* alarm condition changed this scan */
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if (stat!=nsta || sevr!=nsev) {
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/* post events for alarm condition change*/
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monitor_mask = DBE_ALARM;
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/* post stat and nsev fields */
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db_post_events(pao,&pao->stat,DBE_VALUE);
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db_post_events(pao,&pao->sevr,DBE_VALUE);
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}
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/* check for value change */
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delta = pao->mlst - pao->val;
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if(delta<0.0) delta = -delta;
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if (delta > pao->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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pao->mlst = pao->val;
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}
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/* check for archive change */
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delta = pao->alst - pao->val;
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if(delta<0.0) delta = 0.0;
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if (delta > pao->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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pao->alst = pao->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(pao,&pao->val,monitor_mask);
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}
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if(pao->oraw != pao->rval) {
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monitor_mask |= DBE_VALUE;
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db_post_events(pao,&pao->rval,monitor_mask);
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db_post_events(pao,&pao->oval,monitor_mask);
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pao->oraw = pao->rval;
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}
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if(pao->orbv != pao->rbv) {
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monitor_mask |= DBE_VALUE;
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db_post_events(pao,&pao->rbv,monitor_mask);
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pao->orbv = pao->rbv;
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}
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return;
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}
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static void convert(pao)
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struct aoRecord *pao;
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{
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float value;
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/* fetch the desired output if there is a database link */
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if ((pao->dol.type == DB_LINK) && (pao->omsl == CLOSED_LOOP)){
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long nRequest;
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long options;
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short save_pact;
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long status;
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options=0;
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nRequest=1;
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save_pact = pao->pact;
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pao->pact = TRUE;
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status = dbGetLink(&pao->dol.value,DBR_FLOAT,&value,&options,&nRequest);
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pao->pact = save_pact;
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if(status) {
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if(pao->nsev<VALID_ALARM) {
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pao->nsta = LINK_ALARM;
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pao->nsev=VALID_ALARM;
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}
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return;
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}
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if (pao->oif == OUTPUT_INCREMENTAL) value += pao->val;
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} else value = pao->val;
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/* check drive limits */
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if(pao->drvh > pao->drvl) {
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if (value > pao->drvh) value = pao->drvh;
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else if (value < pao->drvl) value = pao->drvl;
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}
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pao->val = value;
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/* now set value equal to desired output value */
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/* apply the output rate of change */
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if (pao->oroc){
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float diff;
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diff = value - pao->oval;
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if (diff < 0){
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if (pao->oroc < -diff) value = pao->oval - pao->oroc;
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}else if (pao->oroc < diff) value = pao->oval + pao->oroc;
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}
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pao->oval = value;
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/* convert */
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if (pao->linr == LINEAR){
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if (pao->eslo == 0) pao->rval = 0;
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else pao->rval = (value - pao->egul) / pao->eslo;
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}else{
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pao->rval = value;
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}
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}
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