Matt Needes
141 lines
3.4 KiB
C
141 lines
3.4 KiB
C
/* devAoVmiVme4100.c.c */
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/* base/src/dev $Id$ */
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/* Device Support Routines for VMI4100 analog output*/
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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: 6-1-90
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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 of alarm stat and sevr to macros
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* .02 03-13-92 jba ANSI C changes
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* .03 05-11-92 mrk Remove read at init (device does not support)
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* .04 02-08-94 mrk Prevent error message storms
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* ...
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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 <string.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 <recSup.h>
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#include <devSup.h>
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#include <special.h>
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#include <module_types.h>
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#include <aoRecord.h>
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/* The following must match the definition in choiceGbl.ascii */
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#define LINEAR 1
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/* Create the dset for devAoAoVmiVme4100 */
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static long init_record();
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static long write_ao();
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static long special_linconv();
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struct {
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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;
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DEVSUPFUN get_ioint_info;
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DEVSUPFUN write_ao;
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DEVSUPFUN special_linconv;
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}devAoVmiVme4100={
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6,
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NULL,
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NULL,
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init_record,
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NULL,
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write_ao,
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special_linconv};
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static long init_record(pao)
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struct aoRecord *pao;
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{
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/* ao.out must be an VME_IO */
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switch (pao->out.type) {
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case (VME_IO) :
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break;
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default :
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recGblRecordError(S_db_badField,(void *)pao,
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"devAoVmiVme4100 (init_record) Illegal OUT field");
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return(S_db_badField);
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}
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/* set linear conversion slope*/
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pao->eslo = (pao->eguf -pao->egul)/4095.0;
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/* It is not possible to read current value of card */
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/* Tell recSup not to convert */
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return(2);
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}
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static long write_ao(pao)
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struct aoRecord *pao;
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{
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struct vmeio *pvmeio;
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int status;
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unsigned short value,rbvalue;
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pvmeio = (struct vmeio *)&(pao->out.value);
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value = pao->rval;
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status = vmi4100_driver(pvmeio->card,pvmeio->signal,&value,&rbvalue);
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if(status==0 || status==-2) pao->rbv = rbvalue;
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if(status==-1) {
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status = 0;
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if(recGblSetSevr(pao,WRITE_ALARM,INVALID_ALARM) && errVerbose
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&& (pao->stat!=WRITE_ALARM || pao->sevr!=INVALID_ALARM))
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recGblRecordError(-1,(void *)pao,"vmi4100_driver Error");
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}else if(status==-2) {
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status=0;
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recGblSetSevr(pao,HW_LIMIT_ALARM,INVALID_ALARM);
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}
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return(status);
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}
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static long special_linconv(pao,after)
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struct aoRecord *pao;
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int after;
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{
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if(!after) return(0);
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/* set linear conversion slope*/
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pao->eslo = (pao->eguf -pao->egul)/4095.0;
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return(0);
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}
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