272 lines
7.2 KiB
C
272 lines
7.2 KiB
C
/*************************************************************************\
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* Copyright (c) 2002 The University of Chicago, as Operator of Argonne
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* National Laboratory.
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* Copyright (c) 2002 The Regents of the University of California, as
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* Operator of Los Alamos National Laboratory.
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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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/* recTimer.c */
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/* base/src/rec $Id$ */
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/* recTimer.c - Record Support Routines for Timer records */
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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: 1-9-89
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*
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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 <lstLib.h>
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#include "dbDefs.h"
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#include "epicsPrint.h"
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#include "alarm.h"
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#include "dbAccess.h"
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#include "dbEvent.h"
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#include "dbFldTypes.h"
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#include "devSup.h"
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#include "errMdef.h"
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#include "recSup.h"
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#include "module_types.h"
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#define GEN_SIZE_OFFSET
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#include "timerRecord.h"
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#undef GEN_SIZE_OFFSET
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/* Create RSET - Record Support Entry Table*/
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#define report NULL
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#define initialize NULL
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static long init_record();
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static long process();
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#define special NULL
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#define get_value NULL
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#define cvt_dbaddr NULL
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#define get_array_info NULL
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#define put_array_info NULL
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#define get_units NULL
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#define get_precision NULL
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#define get_enum_str NULL
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#define get_enum_strs NULL
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#define put_enum_str NULL
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#define get_graphic_double NULL
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#define get_control_double NULL
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#define get_alarm_double NULL
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struct rset timerRSET={
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RSETNUMBER,
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report,
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initialize,
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init_record,
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process,
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special,
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get_value,
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cvt_dbaddr,
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get_array_info,
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put_array_info,
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get_units,
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get_precision,
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get_enum_str,
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get_enum_strs,
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put_enum_str,
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get_graphic_double,
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get_control_double,
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get_alarm_double };
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struct tmdset { /* timer dset */
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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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/* The one remaining definition for still unimplemented DG535 */
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/* so iocInit shuts up */
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struct dset devTmDg535={4,NULL,NULL,NULL,NULL};
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extern int post_event();
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static void monitor();
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static long read_timer();
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static void convert_timer();
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static long write_timer();
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static long init_record(ptimer, pass)
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struct timerRecord *ptimer;
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int pass;
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{
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if (pass==0) return(0);
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/* get the delay initial value if torg is a constant*/
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if (ptimer->torg.type == CONSTANT) {
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recGblInitConstantLink(&ptimer->torg,DBF_FLOAT,&ptimer->trdl);
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}
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/* read to maintain time pulses over a restart */
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return read_timer(ptimer);
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}
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static long process(ptimer)
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struct timerRecord *ptimer;
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{
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long status;
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ptimer->pact=TRUE;
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/* write the new value */
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status = write_timer(ptimer);
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ptimer->udf=FALSE;
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recGblGetTimeStamp(ptimer);
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/* check event list */
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monitor(ptimer);
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/* process the forward scan link record */
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recGblFwdLink(ptimer);
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ptimer->pact=FALSE;
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return status;
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}
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static void monitor(ptimer)
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struct timerRecord *ptimer;
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{
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unsigned short monitor_mask;
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monitor_mask = recGblResetAlarms(ptimer);
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monitor_mask |= (DBE_VALUE | DBE_LOG);
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db_post_events(ptimer,&ptimer->val,monitor_mask);
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db_post_events(ptimer,&ptimer->t1wd,monitor_mask);
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db_post_events(ptimer,&ptimer->t1ld,monitor_mask);
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db_post_events(ptimer,&ptimer->t1td,monitor_mask);
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return;
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}
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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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/*
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* CONVERT_TIMER
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*
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*/
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static void convert_timer(ptimer)
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struct timerRecord *ptimer;
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{
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double constant;
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/* check the tdisble bit */
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if (ptimer->tdis == 1){
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ptimer->t1dl = ptimer->t1wd = 0;
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ptimer->t2dl = ptimer->t2wd = 0;
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ptimer->t3dl = ptimer->t3wd = 0;
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ptimer->t4dl = ptimer->t4wd = 0;
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ptimer->t5dl = ptimer->t5wd = 0;
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return;
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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 */
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ptimer->t1dl = (ptimer->dut1 + ptimer->trdl) / constant; /* delay */
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ptimer->t1wd = ptimer->opw1 / constant; /* width */
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ptimer->t1ld = ptimer->dut1 + ptimer->trdl; /* leading edge delay */
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ptimer->t1td = ptimer->t1ld + ptimer->opw1; /* trailing edge delay */
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/* timing pulse 2 */
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ptimer->t2dl = (ptimer->dut2 + ptimer->trdl) / constant; /* delay */
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ptimer->t2wd = ptimer->opw2 / constant; /* width */
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ptimer->t2ld = ptimer->dut2 + ptimer->trdl; /* leading edge delay */
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ptimer->t2td = ptimer->t2ld + ptimer->opw2; /* trailing edge delay */
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/* timing pulse 3 */
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ptimer->t3dl = (ptimer->dut3 + ptimer->trdl) / constant; /* delay */
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ptimer->t3wd = ptimer->opw3 / constant; /* width */
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ptimer->t3ld = ptimer->dut3 + ptimer->trdl; /* leading edge delay */
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ptimer->t3td = ptimer->t3ld + ptimer->opw3; /* trailing edge delay */
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/* timing pulse 4 */
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ptimer->t4dl = (ptimer->dut4 + ptimer->trdl) / constant; /* delay */
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ptimer->t4wd = ptimer->opw4 / constant; /* width */
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ptimer->t4ld = ptimer->dut4 + ptimer->trdl; /* leading edge delay */
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ptimer->t4td = ptimer->t4ld + ptimer->opw4; /* trailing edge delay */
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/* timing pulse 5 */
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ptimer->t5dl = (ptimer->dut5 + ptimer->trdl) / constant; /* delay */
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ptimer->t5wd = ptimer->opw5 / constant; /* width */
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ptimer->t5ld = ptimer->dut5 + ptimer->trdl; /* leading edge delay */
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ptimer->t5td = ptimer->t5ld + ptimer->opw5; /* trailing edge delay */
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}
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static long read_timer(struct timerRecord *ptimer)
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{
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struct tmdset *pdset;
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/* initiate the write */
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if (ptimer->out.type != VME_IO) {
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recGblRecordError(S_dev_badOutType,(void *)ptimer,"read_timer");
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return S_dev_badOutType;
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}
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pdset = (struct tmdset *) ptimer->dset;
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if (pdset == NULL) {
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recGblRecordError(S_dev_noDSET,(void *)pdset, "timer: process");
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return S_dev_noDSET;
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}
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/* call device support */
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(pdset->read)(ptimer);
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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 tmdset *pdset;
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long status;
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/* get the delay from trigger source */
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if (ptimer->torg.type == DB_LINK) {
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status=dbGetLink(&(ptimer->torg),DBR_FLOAT,&(ptimer->trdl),0,0);
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if (!RTN_SUCCESS(status)) return status;
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}
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if (ptimer->out.type != VME_IO) {
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recGblSetSevr(ptimer,WRITE_ALARM,INVALID_ALARM);
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return 0;
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}
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/* should we maintain through a reboot */
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if (ptimer->main && ptimer->rdt1 && ptimer->rpw1) {
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ptimer->dut1 = ptimer->rdt1 - ptimer->trdl;
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ptimer->opw1 = ptimer->rpw1;
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ptimer->main = 0; /* only kept on the first write */
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}
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/* convert the value */
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convert_timer(ptimer);
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pdset = (struct tmdset *) ptimer->dset;
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if (pdset == NULL) {
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recGblRecordError(S_dev_noDSET,(void *)pdset, "timer: process");
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return S_dev_noDSET;
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}
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/* call device support */
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if ((pdset->write)(ptimer) != OK) {
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recGblSetSevr(ptimer,WRITE_ALARM,INVALID_ALARM);
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return 0;
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}
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return 0;
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}
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