126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
/* 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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* 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 01-08-92 jba Added cast in call to wdStart to avoid compile warning msg
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* .02 02-05-92 jba Changed function arguments from paddr to precord
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* .03 03-13-92 jba ANSI C changes
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* .04 04-10-92 jba pact now used to test for asyn processing, not return value
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* .04 04-05-94 mrk ANSI changes to callback routines
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* ...
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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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/* Create the dset for devAiTestAsyn */
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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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}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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static long init_record(pai)
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struct aiRecord *pai;
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{
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CALLBACK *pcallback;
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/* ai.inp must be a CONSTANT*/
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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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if(recGblInitConstantLink(&pai->inp,DBF_DOUBLE,&pai->val))
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pai->udf = FALSE;
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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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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(pai)
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struct aiRecord *pai;
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{
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CALLBACK *pcallback = (CALLBACK *)pai->dpvt;
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/* ai.inp must be a CONSTANT*/
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switch (pai->inp.type) {
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case (CONSTANT) :
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if(pai->pact) {
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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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} else {
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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(
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pcallback,pai->prio,pai,(double)pai->disv);
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return(0);
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}
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default :
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if(recGblSetSevr(pai,SOFT_ALARM,INVALID_ALARM)){
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if(pai->stat!=SOFT_ALARM) {
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recGblRecordError(S_db_badField,(void *)pai,
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"devAiTestAsyn (read_ai) Illegal INP field");
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}
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}
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}
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return(0);
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}
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