139 lines
3.2 KiB
C
139 lines
3.2 KiB
C
/* share/src/dev $Id$ */
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/*
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Author: John Winans
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* Date: 11/23/92
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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 92-11-24 jrw Added some doc and the NORD parm to
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* the driver call.
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* ...
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*
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* NOTES:
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* We ignore the RARM field in the record. The DVX system is ALWAYS
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* self-rearming.
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*
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* We also ignore/do not use the following fields:
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* RATE, PTSS, and BUSY.
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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 <dbScan.h>
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#include <module_types.h>
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#include <waveformRecord.h>
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static long init_record();
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static long get_ioint_info();
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static long read_wf();
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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_wf;
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DEVSUPFUN special_linconv;
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} devWfDvx2502={
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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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get_ioint_info,
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read_wf,
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NULL};
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/*
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* Init the record by checking the type of I/O device selected,
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* waveform data type, and then read in a waveform by calling the driver.
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*/
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static long init_record(pwf)
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struct waveformRecord *pwf;
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{
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unsigned short value;
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long status;
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/* wf.inp must be an VME_IO */
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if (pwf->inp.type != VME_IO)
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{
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recGblRecordError(S_db_badField,(void *)pwf,
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"devWfDvx2502 (init_record) Illegal INP field");
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return(S_db_badField);
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}
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/* waveform type MUST be short */
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if (pwf->ftvl != DBF_USHORT)
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{
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recGblRecordError(S_db_badField, (void *)pwf,
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"devWfDvx2502 (init_record) waveform data type must be unsigned short");
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return(S_db_badField);
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}
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/* call driver to do initial read */
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read_wf(pwf);
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return(0);
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}
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/*
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* Provide access to the IOSCANPVT structure associated with the DVX card
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* number that we are reading data from.
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*/
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static long get_ioint_info(int cmd, struct waveformRecord *pwf,IOSCANPVT *ppvt)
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{
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dvx_getioscanpvt(pwf->inp.value.vmeio.card,ppvt);
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return(0);
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}
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/*
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* process a waveform record by having the dvx driver fill in the last scanned
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* inputs into the waveform record.
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*/
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static long read_wf(pwf)
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struct waveformRecord *pwf;
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{
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unsigned short value;
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struct vmeio *pvmeio;
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long status;
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pvmeio = (struct vmeio *)&(pwf->inp.value);
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if ((status=dvxReadWf(pvmeio->card, 0, pwf->nelm, pwf->bptr, &(pwf->nord))) == 0)
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return(0);
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/* driver returned an error code for some reason */
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recGblSetSevr(pwf, READ_ALARM, INVALID_ALARM);
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return(2);
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}
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