128 lines
3.1 KiB
C
128 lines
3.1 KiB
C
/* devAiSoftRaw.c */
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/* base/src/dev $Id$ */
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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 03-04-92 jba Added special_linconv
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* .03 03-13-92 jba ANSI C changes
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* .04 10-10-92 jba replaced code with recGblGetLinkValue call
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* ...
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*/
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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 "cvtTable.h"
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#include "dbDefs.h"
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#include "dbAccess.h"
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#include "dbEvent.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 "aiRecord.h"
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/* Create the dset for devAiSoftRaw */
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static long init_record();
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static long read_ai();
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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 read_ai;
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DEVSUPFUN special_linconv;
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}devAiSoftRaw={
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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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special_linconv
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};
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static long init_record(aiRecord *pai)
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{
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special_linconv(pai,1);
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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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recGblInitConstantLink(&pai->inp,DBF_LONG,&pai->rval);
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break;
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case (PV_LINK) :
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case (DB_LINK) :
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case (CA_LINK) :
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break;
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default :
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recGblRecordError(S_db_badField,(void *)pai,
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"devAiSoftRaw (init_record) Illegal INP field");
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return(S_db_badField);
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}
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special_linconv(pai,1);
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return(0);
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}
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static long read_ai( aiRecord *pai)
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{
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long status;
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status = dbGetLink(&(pai->inp),DBR_LONG,&(pai->rval),0,0);
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return(0);
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}
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static long special_linconv(aiRecord *pai,int after)
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{
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double eguf,egul,rawf,rawl;
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double eslo,eoff;
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if(!after) return(0);
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if(pai->rawf == pai->rawl) {
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errlogPrintf("%s devAiSoftRaw RAWF == RAWL\n",pai->name);
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return(0);
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}
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eguf = pai->eguf;
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egul = pai->egul;
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rawf = (double)pai->rawf;
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rawl = (double)pai->rawl;
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eslo = (eguf - egul)/(rawf - rawl);
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eoff = (rawf*egul - rawl*eguf)/(rawf - rawl);
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if(pai->eslo != eslo) {
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pai->eslo = eslo;
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db_post_events(pai,&pai->eslo,DBE_VALUE|DBE_LOG);
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}
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if(pai->eoff != eoff) {
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pai->eoff = eoff;
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db_post_events(pai,&pai->eoff,DBE_VALUE|DBE_LOG);
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}
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return(0);
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}
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