Matt Needes
123 lines
2.7 KiB
C
123 lines
2.7 KiB
C
/* devAiSoft.c */
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/* base/src/dev $Id$ */
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/* devAiSoft.c - Device Support Routines for soft Analog Input 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: 3/6/91
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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 of alarm stat and sevr to macros
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* .02 03-13-92 jba ANSI C changes
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* .11 10-10-92 jba replaced code with recGblGetLinkValue call
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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 <cvtTable.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 <link.h>
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#include <aiRecord.h>
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/* Added for Channel Access Links */
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long dbCaAddInlink();
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long dbCaGetLink();
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/* Create the dset for devAiSoft */
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static long init_record();
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static long read_ai();
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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 read_ai;
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DEVSUPFUN special_linconv;
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}devAiSoft={
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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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read_ai,
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NULL };
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static long init_record(pai)
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struct aiRecord *pai;
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{
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long status;
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/* ai.inp must be a CONSTANT or a PV_LINK or a DB_LINK or a CA_LINK*/
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switch (pai->inp.type) {
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case (CONSTANT) :
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pai->val = pai->inp.value.value;
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pai->udf = FALSE;
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break;
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case (PV_LINK) :
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case (DB_LINK) :
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status = recGblInitFastInLink(&(pai->inp), (struct dbCommon *) pai,
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DBR_DOUBLE, "VAL");
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if (status)
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return(status);
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break;
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default :
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recGblRecordError(S_db_badField, (void *)pai,
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"devAiSoft (init_record) Illegal INP field");
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return(S_db_badField);
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}
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/* Make sure record processing routine does not perform any conversion*/
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pai->linr = 0;
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return(0);
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}
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static long read_ai(pai)
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struct aiRecord *pai;
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{
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long status;
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status = recGblGetFastLink(&(pai->inp), (void *) pai, &(pai->val));
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if (RTN_SUCCESS(status))
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pai->udf = FALSE;
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return(2); /*don't convert*/
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}
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