0f8876de67
* 3.15: (28 commits) update RELEASE_NOTES add option EPICS_NO_CALLBACK replace CALLBACK -> epicsCallback Update dbTest.c Remove links to wiki-ext Add POD annotations from Wiki to subArrayRecord and menuAlarmStat Rename subArrayRecord.dbd and menuAlarmStat.dbd to .pod Add POD annotations to longoutRecord from Wiki Rename longoutRecord.dbd longoutRecord.dbd.pod Add POD annotations to longinRecord from Wiki Rename longinRecord.dbd longinRecord.dbd.pod Add POD annotations to subRecord from Wiki Rename subRecord.dbd subRecord.dbd.pod Add POD annotations to selRecord from Wiki Rename selRecord.dbd selRecord.dbd.pod Add POD annotations to seqRecord from Wiki Rename seqRecord.dbd seqRecord.dbd.pod Fix menu declaration test too Add redefinition guard to menu-generated typedefs Updates to existing .dbd.pod texts, add event and fanout from wiki ... # Conflicts: # documentation/README.1st # documentation/README.html # modules/database/src/ioc/db/callback.h # modules/database/src/ioc/db/dbNotify.c # modules/database/src/ioc/db/menuAlarmStat.dbd # modules/database/src/ioc/db/menuFtype.dbd # modules/database/src/std/rec/compressRecord.dbd.pod # modules/database/src/std/rec/eventRecord.dbd # modules/database/src/std/rec/fanoutRecord.dbd # modules/database/src/std/rec/longinRecord.dbd # modules/database/src/std/rec/longoutRecord.dbd # modules/database/src/std/rec/selRecord.dbd # modules/database/src/std/rec/seqRecord.dbd # modules/database/src/std/rec/subArrayRecord.dbd # modules/database/src/std/rec/subRecord.dbd # modules/libcom/src/iocsh/menuAlarmStat.dbd.pod # modules/libcom/src/iocsh/menuFtype.dbd.pod # src/ioc/db/menuAlarmStat.dbd # src/ioc/db/menuFtype.dbd Manually fix some move+rename Make additional CALLBACK -> epicsCallback preserve INT64 in menuFtype preserve OLDSIM et al
306 lines
7.6 KiB
Plaintext
306 lines
7.6 KiB
Plaintext
#*************************************************************************
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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 is 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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=title Event Record (event)
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The normal use for this record type is to post an event and/or process a
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forward link. Device support for this record can provide a hardware interrupt
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handler routine for I/O Event-scanned records.
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=head2 Parameter Fields
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The records in this field fall into the following groups of parameters:
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=over
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=item *
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scan parameters
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=item *
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read parameters
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=item *
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event number parameters
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=item *
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simulation mode parameters
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=back
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=recordtype event
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=cut
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recordtype(event) {
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include "dbCommon.dbd"
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=head3 Scan Parameters
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The event record has the standard fields for specifying under what circumstances
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it will be processed. If the SCAN field specifies C<I/O Intr>, then device
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support will provide an interrupt handler, posting an event number when an I/O
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interrupt occurs. These fields are listed in L<Scan Fields>. In addition,
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L<Scanning Specification> explains how the scanning fields work. Note that I/O
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event scanning is only supported for those card types that interrupt.
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=head3 Event Number Parameters
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The VAL field contains the event number read by the device support routines. It
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is this number which is posted. For records that use C<Soft Channel> device
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support, it can be configured before run-time or set via dbPuts.
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=fields VAL
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=cut
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field(VAL,DBF_STRING) {
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prompt("Event Name To Post")
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promptgroup("40 - Input")
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special(SPC_MOD)
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asl(ASL0)
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size(40)
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}
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%#include "dbScan.h"
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field(EPVT, DBF_NOACCESS) {
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prompt("Event private")
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special(SPC_NOMOD)
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interest(4)
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extra("EVENTPVT epvt")
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}
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=head3 Input Specification
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The device support routines use the address in this record to obtain input. For
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records that provide an interrupt handler, the INP field should specify the
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address of the I/O card, and the DTYP field should specify a valid device
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support module. Be aware that the address format differs according to the card
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type used. See L<Address Specification> for information on the format of
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hardware addresses and specifying links.
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For soft records, the INP field can be a constant, a database link, or a channel
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access link. For soft records, the DTYP field should specify C<Soft Channel>.
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=fields INP, DTYP
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=cut
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field(INP,DBF_INLINK) {
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prompt("Input Specification")
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promptgroup("40 - Input")
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interest(1)
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}
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=head3 Operator Display Parameters
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See L<Fields Common to All Record Types> for more on the record name (NAME) and
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description (DESC) fields.
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=fields NAME, DESC
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=head3 Alarm Parameters
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The Event record has the alarm parameters common to all record types. L<Alarm
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Fields> lists other fields related to alarms that are common to all record
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types.
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=head3 Simulation Mode Parameters
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The following fields are used to operate the event record in the simulation
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mode. See L<Fields Common to Many Record Types> for more information on these
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fields.
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=fields SIOL, SVAL, SIML, SIMM, SIMS
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=cut
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field(SIOL,DBF_INLINK) {
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prompt("Sim Input Specifctn")
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promptgroup("90 - Simulate")
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interest(1)
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}
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field(SVAL,DBF_STRING) {
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prompt("Simulation Value")
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size(40)
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}
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field(SIML,DBF_INLINK) {
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prompt("Sim Mode Location")
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promptgroup("90 - Simulate")
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interest(1)
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}
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field(SIMM,DBF_MENU) {
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prompt("Simulation Mode")
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special(SPC_MOD)
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interest(1)
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menu(menuYesNo)
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}
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field(SIMS,DBF_MENU) {
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prompt("Sim mode Alarm Svrty")
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promptgroup("90 - Simulate")
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interest(2)
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menu(menuAlarmSevr)
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}
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field(OLDSIMM,DBF_MENU) {
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prompt("Prev. Simulation Mode")
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special(SPC_NOMOD)
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interest(4)
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menu(menuSimm)
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}
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field(SSCN,DBF_MENU) {
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prompt("Sim. Mode Scan")
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promptgroup("90 - Simulate")
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interest(1)
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menu(menuScan)
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initial("65535")
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}
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field(SDLY,DBF_DOUBLE) {
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prompt("Sim. Mode Async Delay")
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promptgroup("90 - Simulate")
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interest(2)
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initial("-1.0")
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}
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%#include "callback.h"
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field(SIMPVT,DBF_NOACCESS) {
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prompt("Sim. Mode Private")
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special(SPC_NOMOD)
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interest(4)
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extra("epicsCallback *simpvt")
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}
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=head2 Record Support
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=head3 Record Support Routines
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=head4 init_record
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This routine initializes SIMM with the value of SIML if SIML type is a CONSTANT
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link or creates a channel access link if SIML type is PV_LINK. SVAL is likewise
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initialized if SIOL is CONSTANT or PV_LINK.
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If device support includes C<init_record()>, it is called.
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=head4 process
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See next section.
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=head3 Record Processing
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Routine process implements the following algorithm:
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=over
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=item 1.
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readValue is called. See L<Input Records> for more information.
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=item 2.
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If PACT has been changed to TRUE, the device support read routine has started
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but has not completed reading a new input value. In this case, the processing
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routine merely returns, leaving PACT TRUE.
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=item 3.
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If VAL E<gt> 0, post event number VAL.
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=item 4.
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Check to see if monitors should be invoked. Alarm monitors are invoked if the
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alarm status or severity has chanet to 0.
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=item 5.
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Scan forward link if necessary, set PACT FALSE, and return.
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=back
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=head2 Device Support
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=head3 Fields of Interest To Device Support
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Each record must have an associated set of device support routines. The device
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support routines are primarily interested in the following fields:
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=fields PACT, DPVT, UDF, NSEV, NSTA, INP, PRIO
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=head3 Device Support Routines
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Device support consists of the following routines:
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=head4 long report(int level)
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This optional routine is called by the IOC command C<dbior> and is passed the
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report level that was requested by the user.
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It should print a report on the state of the device support to stdout.
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The C<level> parameter may be used to output increasingly more detailed
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information at higher levels, or to select different types of information with
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different levels.
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Level zero should print no more than a small summary.
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=head4 long init(int after)
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This optional routine is called twice at IOC initialization time.
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The first call happens before any of the C<init_record()> calls are made, with
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the integer parameter C<after> set to 0.
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The second call happens after all of the C<init_record()> calls have been made,
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with C<after> set to 1.
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=head4 init_record
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init_record(precord)
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This routine is optional. If provided, it is called by the record support
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C<init_record()> routine.
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=head4 get_ioint_info
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get_ioint_info(int cmd, struct dbCommon *precord, IOSCANPVT *ppvt)
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This routine is called by the ioEventScan system each time the record is added
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or deleted from an I/O event scan list. cmd has the value (0,1) if the record is
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being (added to, deleted from) an I/O event list. It must be provided for any
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device type that can use the ioEvent scanner.
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=head4 read_event
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read_event(precord)
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This routine returns the following values:
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=over
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=item *
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0: Success.
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=item *
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Other: Error.
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=back
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=head3 Device Support For Soft Records
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The C<Soft Channel> device support module is available. The INP link type must
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be either CONSTANT, DB_LINK, or CA_LINK.
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If the INP link type is CONSTANT, then the constant value is stored into VAL by
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C<init_record()>, and UDF is set to FALSE. If the INP link type is PV_LINK, then
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dbCaAddInlink is called by C<init_record()>.
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C<read_event> calls recGblGetLinkValue to read the current value of VAL. See
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L<Input Records> for details on soft input.
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=cut
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}
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