Janet B. Anderson
325 lines
9.6 KiB
C
325 lines
9.6 KiB
C
/* recWaveform.c */
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/* share/src/rec $Id$ */
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/* recWaveform.c - Record Support Routines for Waveform records */
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/*
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* Original Author: Bob Dalesio
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* Current Author: Marty Kraimer
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* Date: 7-14-89
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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 11-27-89 lrd using one more buffer entry than allocated
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* .02 11-27-89 lrd throttle on monitor requests
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* .03 02-27-90 lrd handle character value links for Joerger
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* digitizer (convert to short array for access
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* .04 03-05-90 lrd add averaging of entire waveforms
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* .05 04-02-90 ba/lrd fix the joerger processing and
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* add get_a_byte macro
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* fix the determination of buff_size
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* .06 04-11-90 lrd make locals static
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* .07 05-02-90 lrd fix mdct so that it would remain 0 on the
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* pass where the monitors are sent
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* .08 05-08-90 ba mdct is never equal to mcnt during record pro-
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* cessing, causing some code never to run. Fix
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* is to check (mdct==mcnt || mdct==0) to indicate
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* first time through an averaging loop.
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* .09 07-26-90 lrd fixed the N-to-1 character waveformion
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* value was not initialized
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* .10 10-11-90 mrk Made changes for new record support
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* .11 11-11-91 jba Moved set and reset of alarm stat and sevr to macros
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* .12 12-18-91 jba Changed E_IO_INTERRUPT to SCAN_IO_EVENT, added dbScan.h
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* .13 02-05-92 jba Changed function arguments from paddr to precord
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* .14 02-28-92 jba Changed get_precision,get_graphic_double,get_control_double
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* .15 02-28-92 jba ANSI C changes
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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 <string.h>
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#include <memLib.h>
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#include <alarm.h>
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#include <dbDefs.h>
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#include <dbAccess.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 <waveformRecord.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();
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static long process();
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#define special NULL
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static long get_value();
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static long cvt_dbaddr();
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static long get_array_info();
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static long put_array_info();
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static long get_units();
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static long get_precision();
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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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#define get_alarm_double NULL
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struct rset waveformRSET={
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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 wfdset { /* waveform 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_wf;/*(0,1)=> success and */
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/*(convert,don't continue)*/
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};
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/*sizes of field types*/
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static int sizeofTypes[] = {0,1,1,2,2,4,4,4,8,2};
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void monitor();
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/*Following from timing system */
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extern unsigned int gts_trigger_counter;
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static long init_record(pwf)
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struct waveformRecord *pwf;
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{
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struct wfdset *pdset;
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long status;
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/* This routine may get called twice. Once by cvt_dbaddr. Once by iocInit*/
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if(pwf->bptr==NULL) {
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if(pwf->nelm<=0) pwf->nelm=1;
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if(pwf->ftvl == 0) {
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pwf->bptr = (char *)calloc(pwf->nelm,MAX_STRING_SIZE);
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} else {
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if(pwf->ftvl<0|| pwf->ftvl>DBF_ENUM) pwf->ftvl=2;
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pwf->bptr = (char *)calloc(pwf->nelm,sizeofTypes[pwf->ftvl]);
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}
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pwf->nord = 0;
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/* must have read_wf function defined */
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if(!(pdset = (struct wfdset *)(pwf->dset))) {
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recGblRecordError(S_dev_noDSET,pwf,"wf: init_record");
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return(S_dev_noDSET);
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}
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if( (pdset->number < 5) || (pdset->read_wf == NULL) ) {
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recGblRecordError(S_dev_missingSup,pwf,"wf: 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)(pwf,process))) return(status);
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}
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}
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return(0);
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}
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static long process(pwf)
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struct waveformRecord *pwf;
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{
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struct wfdset *pdset = (struct wfdset *)(pwf->dset);
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long status;
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if( (pdset==NULL) || (pdset->read_wf==NULL) ) {
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pwf->pact=TRUE;
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recGblRecordError(S_dev_missingSup,pwf,"read_wf");
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return(S_dev_missingSup);
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}
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/* event throttling */
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if (pwf->scan == SCAN_IO_EVENT){
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if ((pwf->evnt != 0) && (gts_trigger_counter != 0)){
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if ((gts_trigger_counter % pwf->evnt) != 0){
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status=(*pdset->read_wf)(pwf);
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return(0);
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}
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}
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}
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/*pact must not be set true until read_wf completes*/
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status=(*pdset->read_wf)(pwf); /* read the new value */
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pwf->pact = TRUE;
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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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pwf->udf=FALSE;
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tsLocalTime(&pwf->time);
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monitor(pwf);
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/* process the forward scan link record */
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if (pwf->flnk.type==DB_LINK) dbScanPassive(((struct dbAddr *)pwf->flnk.value.db_link.pdbAddr)->precord);
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pwf->pact=FALSE;
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return(0);
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}
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static long get_value(pwf,pvdes)
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struct waveformRecord *pwf;
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struct valueDes *pvdes;
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{
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pvdes->no_elements=pwf->nord;
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pvdes->pvalue = pwf->bptr;
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pvdes->field_type = pwf->ftvl;
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return(0);
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}
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static long cvt_dbaddr(paddr)
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struct dbAddr *paddr;
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{
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struct waveformRecord *pwf=(struct waveformRecord *)paddr->precord;
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/* This may get called before init_record. If so just call it*/
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if(pwf->bptr==NULL) init_record(pwf);
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paddr->pfield = (void *)(pwf->bptr);
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paddr->no_elements = pwf->nelm;
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paddr->field_type = pwf->ftvl;
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if(pwf->ftvl==0) paddr->field_size = MAX_STRING_SIZE;
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else paddr->field_size = sizeofTypes[pwf->ftvl];
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paddr->dbr_field_type = pwf->ftvl;
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return(0);
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}
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static long get_array_info(paddr,no_elements,offset)
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struct dbAddr *paddr;
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long *no_elements;
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long *offset;
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{
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struct waveformRecord *pwf=(struct waveformRecord *)paddr->precord;
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*no_elements = pwf->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(paddr,nNew)
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struct dbAddr *paddr;
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long nNew;
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{
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struct waveformRecord *pwf=(struct waveformRecord *)paddr->precord;
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pwf->nord = nNew;
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if(pwf->nord > pwf->nelm) pwf->nord = pwf->nelm;
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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 waveformRecord *pwf=(struct waveformRecord *)paddr->precord;
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strncpy(units,pwf->egu,sizeof(pwf->egu));
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return(0);
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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 waveformRecord *pwf=(struct waveformRecord *)paddr->precord;
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*precision = pwf->prec;
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if(paddr->pfield==(void *)&pwf->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(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 waveformRecord *pwf=(struct waveformRecord *)paddr->precord;
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if(paddr->pfield==(void *)&pwf->val){
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pgd->upper_disp_limit = pwf->hopr;
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pgd->lower_disp_limit = pwf->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 waveformRecord *pwf=(struct waveformRecord *)paddr->precord;
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if(paddr->pfield==(void *)&pwf->val){
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pcd->upper_ctrl_limit = pwf->hopr;
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pcd->lower_ctrl_limit = pwf->lopr;
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} else recGblGetControlDouble(paddr,pcd);
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return(0);
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}
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static void monitor(pwf)
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struct waveformRecord *pwf;
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{
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unsigned short monitor_mask;
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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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recGblResetSevr(pwf,stat,sevr,nsta,nsev);
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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(pwf,&pwf->stat,DBE_VALUE);
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db_post_events(pwf,&pwf->sevr,DBE_VALUE);
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}
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monitor_mask |= (DBE_LOG|DBE_VALUE);
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if(monitor_mask) db_post_events(pwf,pwf->bptr,monitor_mask);
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return;
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}
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