91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/*************************************************************************\
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* Copyright (c) 2002 The University of Chicago, as Operator of Argonne
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* National Laboratory.
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* Copyright (c) 2002 The Regents of the University of California, as
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* Operator of Los Alamos National Laboratory.
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* EPICS BASE Versions 3.13.7
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* and higher are distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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\*************************************************************************/
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/* devAiTestAsyn.c */
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/* base/src/dev $Id$ */
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/* devAiTestAsyn.c - Device Support Routines for testing asynchronous processing*/
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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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#include <stddef.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "alarm.h"
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#include "callback.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 "recGbl.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 "dbCommon.h"
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#include "aiRecord.h"
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#include "epicsExport.h"
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static long init_record(struct aiRecord *pai)
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{
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CALLBACK *pcallback;
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switch (pai->inp.type) {
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case (CONSTANT) :
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pcallback = (CALLBACK *)(calloc(1,sizeof(CALLBACK)));
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pai->dpvt = (void *)pcallback;
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break;
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default :
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recGblRecordError(S_db_badField,(void *)pai,
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"devAiTestAsyn (init_record) Illegal INP field");
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pai->pact=TRUE;
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return(S_db_badField);
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}
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return(0);
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}
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static long read_ai(struct aiRecord *pai)
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{
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CALLBACK *pcallback = (CALLBACK *)pai->dpvt;
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if(pai->pact) {
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pai->val += 0.1; /* Change VAL just to show we've done something. */
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pai->udf = FALSE; /* We modify VAL so we are responsible for UDF too. */
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printf("Completed asynchronous processing: %s\n",pai->name);
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return(2); /* don`t convert*/
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}
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if(pai->disv<=0) return(2);
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printf("Starting asynchronous processing: %s\n",pai->name);
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pai->pact=TRUE;
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callbackRequestProcessCallbackDelayed(pcallback,
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pai->prio,pai,(double)pai->disv);
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return(0);
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}
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/* Create the dset for devAiTestAsyn */
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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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}devAiTestAsyn={
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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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};
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epicsExportAddress(dset,devAiTestAsyn);
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