341 lines
9.5 KiB
C
341 lines
9.5 KiB
C
/* recTimer.c */
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/* share/src/rec $Id$ */
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/* recTimer.c - Record Support Routines for Timer records
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*
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* Author: Bob Dalesio
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* Date: 1-9-89
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*
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* Control System Software for the GTA Project
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*
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* Copyright 1988, 1989, the Regents of the University of California.
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*
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* This software was produced under a U.S. Government contract
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* (W-7405-ENG-36) at the Los Alamos National Laboratory, which is
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* operated by the University of California for the U.S. Department
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* of Energy.
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*
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* Developed by the Controls and Automation Group (AT-8)
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* Accelerator Technology Division
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* Los Alamos National Laboratory
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*
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* Direct inqueries to:
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* Bob Dalesio, AT-8, Mail Stop H820
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* Los Alamos National Laboratory
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* Los Alamos, New Mexico 87545
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* Phone: (505) 667-3414
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* E-mail: dalesio@luke.lanl.gov
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*
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* Modification Log:
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* -----------------
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* .01 01-20-89 lrd fix vx includes
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* .02 02-06-89 lrd add event post capability
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* .03 03-29-89 lrd make hardware errors MAJOR
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* remove hw severity spec from database
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* .04 04-07-89 lrd service monitors
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* .05 05-03-89 lrd removed process mask from arg list
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* .06 05-03-89 lrd modified to read the timing on startup
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* .07 05-03-89 lrd read trigger delay from trigger origin record
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* .08 07-03-89 lrd add processing a forward link
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* .09 08-15-89 lrd add post events for timing pulse 1 fields
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* .10 10-15-90 mrk extensible record and device support
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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 <alarm.h>
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#include <dbAccess.h>
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#include <dbDefs.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 <link.h>
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#include <recSup.h>
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#include <timerRecord.h>
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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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long init_record();
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long process();
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#define special NULL
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#define get_precision NULL
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long get_value();
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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_enum_str NULL
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#define get_units 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_enum_strs 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_precision,
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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_enum_str,
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get_units,
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get_graphic_double,
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get_control_double,
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get_enum_strs };
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/* because the driver does all the work just declare device support here*/
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struct dset devTmMizar8310={4,NULL,NULL,NULL,NULL};
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struct dset devTmDg535={4,NULL,NULL,NULL,NULL};
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struct dset devTmVxiAt5={4,NULL,NULL,NULL,NULL};
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extern int post_event();
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void monitor();
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void read_timer();
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void convert_timer();
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void write_timer();
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static long init_record(ptimer)
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struct timerRecord *ptimer;
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{
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/* read to maintain time pulses over a restart */
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read_timer(ptimer);
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return(0);
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}
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static long get_value(ptimer,pvdes)
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struct timerRecord *ptimer;
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struct valueDes *pvdes;
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{
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pvdes->field_type = DBF_SHORT;
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pvdes->no_elements=1;
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(short *)(pvdes->pvalue) = &ptimer->val;
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return(0);
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}
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static long process(paddr)
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struct dbAddr *paddr;
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{
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struct timerRecord *ptimer=(struct timerRecord *)(paddr->precord);
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ptimer->pact=TRUE;
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/* write the new value */
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write_timer(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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if (ptimer->flnk.type==DB_LINK) dbScanPassive(ptimer->flnk.value.db_link.pdbAddr);
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ptimer->pact=FALSE;
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return(0);
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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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short stat,sevr,nsta,nsev;
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/* get previous stat and sevr and new stat and sevr*/
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stat=ptimer->stat;
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sevr=ptimer->sevr;
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nsta=ptimer->nsta;
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nsev=ptimer->nsev;
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/*set current stat and sevr*/
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ptimer->stat = nsta;
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ptimer->sevr = nsev;
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ptimer->nsta = 0;
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ptimer->nsev = 0;
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/* anyone waiting for an event on this record */
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if (ptimer->mlis.count == 0) return;
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/* Flags which events to fire on the value field */
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monitor_mask = 0;
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/* alarm condition changed this scan */
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if (stat!=nsta || sevr!=nsev){
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/* post events for alarm condition change*/
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monitor_mask = DBE_ALARM;
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/* post stat and sevr fields */
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db_post_events(ptimer,&ptimer->stat,DBE_VALUE);
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db_post_events(ptimer,&ptimer->sevr,DBE_VALUE);
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}
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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[] = {1000,1000000,1000000000,1000000000000};
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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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/*
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* WRITE_TIMER
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*
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* convert the value and write it
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*/
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static void write_timer(ptimer)
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struct timerRecord *ptimer;
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{
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struct vmeio *pvmeio;
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long status,options,nRequest;
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/* get the delay from trigger source */
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if (ptimer->torg.type == DB_LINK) {
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options=0;
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nRequest=1;
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status = dbGetLink(&(ptimer->torg.value.db_link),ptimer,DBR_FLOAT,
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&(ptimer->trdl),&options,&nRequest);
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if(status!=0) return;
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}
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if (ptimer->out.type != VME_IO) {
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if(ptimer->nsev<MAJOR_ALARM) {
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ptimer->nsta = WRITE_ALARM;
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ptimer->nsev = MAJOR_ALARM;
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}
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return;
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}
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pvmeio = (struct vmeio *)(&ptimer->out.value);
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/* convert the value */
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convert_timer(ptimer);
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/* put the value to the ao driver */
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if (time_driver((int)pvmeio->card, /* card number */
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(int)pvmeio->signal, /* signal number */
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(int)ptimer->dtyp, /* card type */
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(int)ptimer->tsrc, /* trigger source */
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(int)ptimer->ptst, /* pre-trigger state */
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&ptimer->t1dl, /* delay/width array */
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1, /* number of pulses */
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((ptimer->tevt == 0)?0:post_event), /* addr of event post routine */
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(int)ptimer->tevt) /* event to post on trigger */
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!= 0){
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if (ptimer->nsev<MAJOR_ALARM) {
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ptimer->nsta = WRITE_ALARM;
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ptimer->nsev = MAJOR_ALARM;
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}
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}
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return;
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}
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/*
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* READ_TIMER
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*
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* read the current timer pulses and convert them to engineering units
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*/
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static void read_timer(ptimer)
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struct timerRecord *ptimer;
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{
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struct vmeio *pvmeio;
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int source;
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int ptst;
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int no_pulses;
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double time_pulse[2]; /* delay and width */
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double constant;
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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,ptimer,"read_timer");
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return;
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}
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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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/* put the value to the ao driver */
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if (time_driver_read((int)pvmeio->card, /* card number */
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(int)pvmeio->signal, /* signal number */
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(int)ptimer->dtyp, /* card type */
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&source, /* trigger source */
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&ptst, /* pre-trigger state */
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&time_pulse[0], /* delay/width */
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&no_pulses, /* number pulses found */
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1) < 0) return;
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if (no_pulses == 0) return;
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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->dut1 = time_pulse[0] * constant; /* delay to trigger */
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ptimer->opw1 = time_pulse[1] * constant; /* pulse width */
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ptimer->ptst = ptst; /* pre-trigger state */
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ptimer->tsrc = source; /* clock source */
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return;
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}
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