Marty Kraimer
95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/*************************************************************************\
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* Copyright (c) 2002 Lawrence Berkeley Laboratory,The Control Systems
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* Group, Systems Engineering Department
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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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/* devSASoft.c */
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/* devSASoft.c - Device Support Routines for soft subArray Records
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*
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* Author: Carl Lionberger
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* Date: 090293
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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 "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 "subArrayRecord.h"
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#include "epicsExport.h"
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static int sizeofTypes[] = {MAX_STRING_SIZE,1,1,2,2,4,4,4,8,2};
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/* Create the dset for devSASoft */
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static long init_record();
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static long read_sa();
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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_sa;
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}devSASoft={
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5,
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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_sa
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};
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epicsExportAddress(dset,devSASoft);
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static long init_record(subArrayRecord *psa)
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{
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/* sa.inp must be a CONSTANT or a PV_LINK or a DB_LINK or a CA_LINK*/
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switch (psa->inp.type) {
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case (CONSTANT) :
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psa->nord = 0;
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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 *)psa,
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"devSASoft (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_sa(subArrayRecord *psa)
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{
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long status,ecount,nRequest;
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if ((psa->indx + psa->nelm) < psa->malm)
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nRequest= psa->indx + psa->nelm;
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else
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nRequest=psa->malm;
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status = dbGetLink(&psa->inp,psa->ftvl,psa->bptr, 0,&nRequest);
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if ((nRequest - psa->indx) > 0)
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{
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if (psa->nelm > (nRequest - psa->indx))
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ecount = nRequest - psa->indx;
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else
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ecount = psa->nelm;
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memcpy(psa->bptr,(char *)psa->bptr + psa->indx * sizeofTypes[psa->ftvl],
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ecount * sizeofTypes[psa->ftvl]);
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}
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psa->nord = nRequest - psa->indx;
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return(0);
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}
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