151 lines
4.1 KiB
C
151 lines
4.1 KiB
C
/* devMz8310.c */
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/* base/src/dev $Id$ */
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/* Device Support Routines for MZ8310 Timer */
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/*
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* Original Author: Matthew C. Needes
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* Date: 9-2-93
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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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*/
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#include <vxWorks.h>
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#include <vme.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 <iv.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 <dbCommon.h>
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#include <fast_lock.h>
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#include <recSup.h>
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#include <devSup.h>
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#include <dbScan.h>
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#include <special.h>
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#include <module_types.h>
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#include <eventRecord.h>
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#include <pulseCounterRecord.h>
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#include <pulseDelayRecord.h>
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#include <pulseTrainRecord.h>
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#include <timerRecord.h>
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#include <drvMz8310.h>
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static long read_timer();
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static long write_timer();
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static void localPostEvent (void *pParam);
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struct tmdset {
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long number;
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DEVSUPFUN dev_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;
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DEVSUPFUN write;
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};
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struct tmdset devTmMizar8310 = { 6, NULL, NULL, NULL, NULL, read_timer, write_timer };
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/*
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* These constants are indexed by the time units field in the timer record.
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* Values are converted to seconds.
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*/
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static double constants[] = {1e3,1e6,1e9,1e12};
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static long read_timer(struct timerRecord *ptimer)
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{
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struct vmeio *pvmeio;
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unsigned source;
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unsigned ptst;
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double time_pulse[2]; /* delay and width */
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double constant;
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/* only supports a one channel VME timer module !!!! */
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pvmeio = (struct vmeio *)(&ptimer->out.value);
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if (mz8310_one_shot_read(
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&ptst, /* pre-trigger state */
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&(time_pulse[0]), /* offset of pulse */
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&(time_pulse[1]), /* width of pulse */
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pvmeio->card, /* card number */
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pvmeio->signal, /* signal number */
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&source) != 0) { /* trigger source */
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return 1;
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}
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/* convert according to time units */
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constant = constants[ptimer->timu];
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/* timing pulse 1 is currently active */
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/* put its parameters into the database so that it will not change */
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/* when the timer record is written */
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ptimer->rdt1 = time_pulse[0] * constant; /* delay to trigger */
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ptimer->rpw1 = time_pulse[1] * constant; /* pulse width */
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return 0;
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}
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static long write_timer(struct timerRecord *ptimer)
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{
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struct vmeio *pvmeio;
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void (*pCB)(void *);
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/* put the value to the ao driver */
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pvmeio = (struct vmeio *)(&ptimer->out.value);
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if (ptimer->tevt) {
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pCB = localPostEvent;
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}
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else {
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pCB = NULL;
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}
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/* put the value to the ao driver */
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return mz8310_one_shot(
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ptimer->ptst, /* pre-trigger state */
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ptimer->t1dl, /* pulse offset */
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ptimer->t1wd, /* pulse width */
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pvmeio->card, /* card number */
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pvmeio->signal, /* signal number */
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ptimer->tsrc, /* trigger source */
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pCB, /* addr of event post routine */
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ptimer); /* event to post on trigger */
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}
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static void localPostEvent (void *pParam)
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{
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struct timerRecord *ptimer = pParam;
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if (ptimer->tevt) {
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post_event (ptimer->tevt);
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}
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}
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