Re: No monitor refresh

[Hinko Kocevar <hinko.kocevar@i-tech.si>]

Hello Mark,

On 05/11/10 18:10, Mark Rivers wrote:
> Does your asyn driver have code like the following?
> 
>     pasynManager->interruptStart(pInterfaces->int32InterruptPvt,
> &pclientList);
>     pnode = (interruptNode *)ellFirst(pclientList);
>     while (pnode) {
>         asynInt32Interrupt *pInterrupt = (asynInt32Interrupt *)
> pnode->drvPvt;
>         pInterrupt->callback(pInterrupt->userPvt,
>                              pInterrupt->pasynUser,
>                              value);
>         }
>         pnode = (interruptNode *)ellNext(&pnode->node);
>     }
>     pasynManager->interruptEnd(pInterfaces->int32InterruptPvt);
> 
> If not, then you cannot make your record have SCAN=I/O Intr, because the
> driver will not do the required callbacks to device support.

Yes, my driver has similar while() loop to handle the I/O Intr type of
records.

Best regards,
Hinko

> 
> Mark
> 
> 
> -----Original Message-----
> From: tech-talk-bounces@aps.anl.gov
> [mailto:tech-talk-bounces@aps.anl.gov] On Behalf Of Hinko Kocevar
> Sent: Tuesday, May 11, 2010 11:01 AM
> To: Ralph Lange
> Cc: tech-talk@aps.anl.gov
> Subject: Re: No monitor refresh
> 
> Hello Ralph,
> 
> On 05/11/10 16:47, Ralph Lange wrote:
>> Hello Hinko,
>>
>> hm ..... it's an I/O scanned mbbi connected to asyn, and I have no
> asyn
>> experience. (So I'm sort of out-of-the-game at this point.)
> 
> Yes it is a record defined like this:
> 
> record(mbbi, "$(DEVICE)ENV_AGC_MONITOR") {
> 	field(DTYP, "asynInt32")
> 	field(INP, "@asyn($(PORT), 725, 1.0)")
> 	field(SCAN, "I/O Intr")
> 	field(DESC, "AGC")
> 	field(ZRVL, "0")
> 	field(ONVL, "1")
> 	field(ZRST, "MANUAL")
> 	field(ONST, "AUTO")
> 	field(PINI, "YES")
> }
> 
> record(mbbo, "$(DEVICE)ENV_AGC_SP") {
> 	field(DTYP, "asynInt32")
> 	field(OUT, "@asyn($(PORT), 725)")
> 	field(DESC, "AGC")
> 	field(ZRVL, "0")
> 	field(ONVL, "1")
> 	field(ZRST, "MANUAL")
> 	field(ONST, "AUTO")
> 	field(PINI, "YES")
> }
> 
> ENV_AGC_MONITOR is used with camonitor, ENV_AGC_SP is used with
> caget/caput. When I set the value with ENV_AGC_SP, ENV_AGC_MONITOR
> should refresh the value.
> 
>>
>> Nevertheless - some thoughts:
>> Your NOBT is zero, but your mask is correct, probably something that
>> asyn does for you.
>> Looked at the record code: An mbbi should definitely send VAL updates
>> when it processes and the value changed.
> 
> Yes it should, but this does not happen always.
> 
>> Are you sure asyn gets the value you expect it to into the record?
>> (Check by enabling asyn debug.)
> 
> I've checked the status of the low level stuff (kernel driver and
> hardware) and the new value is there..
> 
>> Are you sure the record gets processed by asyn when you expect it to?
>> (Check by setting the trace field.)
> 
> I want it to react as soon as the value in hardware changes - hence the
> I/O scanning. Hmm, maybe I could try some other Periodic scans to see if
> it helps..
> 
> Will try the asyn debug and traces too..
> 
>> When you set up multiple camonitor clients - do they all behave the
> same?
> 
> Yes, they do.
> 
> I've also tried running camonitor on several clients, even locally on
> the IOC server itself (ARM cross compiled), but without any success. It
> seems to me that EPICS TCP transport layer is not reacting to the change
> !?
> 
>> When you do intermediate cagets while your camonitor is not getting
>> updates, what timestamps are these showing?
> 
> They seem to be showing some old timestamp - e.g. few hours back, while
> it should show current date&time stamp.
> 
>> (BTW: You only have two states with raw values 0 and 1 defined - any
>> particular reason for using mbbi as opposed to bi?)
> 
> No particular reason at all.. :)
> 
>>
>> Someone with more asyn background could probably say more....
> 
> 
> Thank you for the valuable pointers!
> 
> Best regards,
> Hinko
> 
> 
>>
>> Good luck!
>> Ralph
>>
>>
>> On Tue 11 May 2010 10:07:12 Hinko Kocevar wrote:
>>> Hello Ralph,
>>>
>>> On 05/11/10 15:21, Ralph Lange wrote:
>>>  
>>>> Hello Hinko,
>>>>
>>>> what EPICS versions are you using for client and IOC?
>>>>     
>>>
>>> IOC and client use 3.14.10 EPICS base version.
>>>
>>>  
>>>> Can you show a dump (dbpr <name>, 4) of the record that you are
>>>> connecting to?
>>>>     
>>>
>>> Sure, here it is:
>>> epics> dbpr LIBERA01:ENV:ENV_AGC_MONITOR 4
>>> ACKS: NO_ALARM      ACKT: YES           ASG:                ASP:
>>> 0x00000000
>>> BKPT: 0x00          COSV: NO_ALARM      DESC: AGC           DISA: 0
>>>
>>> DISP: 0             DISS: NO_ALARM      DISV: 1             DPVT:
>>> 0x50c72c00
>>> DSET: 0x7c620840    DTYP: asynInt32     EIST:               EISV:
>>> NO_ALARM
>>> EIVL: 0x0           ELST:               ELSV: NO_ALARM      ELVL: 0x0
>>>
>>> EVNT: 0             FFST:               FFSV: NO_ALARM      FFVL: 0x0
>>>
>>> FLNK:CONSTANT 0     FRST:               FRSV: NO_ALARM      FRVL: 0x0
>>>
>>> FTST:               FTSV: NO_ALARM      FTVL: 0x0           FVST:
>>>
>>> FVSV: NO_ALARM      FVVL: 0x0           INP:INST_IO @asyn(ENV, 725,
> 1.0)
>>>
>>> LALM: 1             LCNT: 0             LSET: 0xe8752e00    MASK:
>>> 4294967295
>>> MLIS: 0x38d0320060d0320003000000        MLOK: 0x28700b00    MLST: 1
>>>
>>> NAME: LIBERA01:ENV:ENV_AGC_MONITOR      NIST:               NISV:
>>> NO_ALARM
>>> NIVL: 0x0           NOBT: 0             NSEV: NO_ALARM      NSTA:
>>> NO_ALARM
>>> ONST: AUTO          ONSV: NO_ALARM      ONVL: 0x1           ORAW: 1
>>>
>>> PACT: 0             PHAS: 0             PINI: YES           PPN:
>>> 0x00000000
>>> PPNR: 0x00000000    PRIO: LOW           PROC: 0             PUTF: 0
>>>
>>> RDES: 0xa8a10300    RPRO: 0             RSET: 0x34b70a40    RVAL: 1
>>>
>>> SCAN: I/O Intr      SDEF: 1             SDIS:CONSTANT       SEVR:
>>> NO_ALARM
>>> SHFT: 0             SIML:CONSTANT       SIMM: NO            SIMS:
>>> NO_ALARM
>>> SIOL:CONSTANT       SPVT: 0x388a2f00    STAT: NO_ALARM      SVAL: 0
>>>
>>> SVST:               SVSV: NO_ALARM      SVVL: 0x0           SXST:
>>>
>>> SXSV: NO_ALARM      SXVL: 0x0           TEST:               TESV:
>>> NO_ALARM
>>> TEVL: 0x0           THST:               THSV: NO_ALARM      THVL: 0x0
>>>
>>> TIME: 2010-05-11 11:18:40.100440000     TPRO: 0             TSE: 0
>>>
>>> TSEL:CONSTANT       TTST:               TTSV: NO_ALARM      TTVL: 0x0
>>>
>>> TVST:               TVSV: NO_ALARM      TVVL: 0x0           TWST:
>>>
>>> TWSV: NO_ALARM      TWVL: 0x0           UDF: 0              UNSV:
>>> NO_ALARM
>>> VAL: 1              ZRST: MANUAL        ZRSV: NO_ALARM      ZRVL: 0x0
>>>
>>>
>>>  
>>>> What field of that record are you connecting to?
>>>>     
>>>
>>> I did no specify any field - so it is VAL, I guess by default.
>>>
>>> Thank you!
>>>
>>> Regards,
>>> Hinko
>>>
>>>  
>>>> Regards,
>>>> Ralph
>>>>
>>>>
>>>> On Tue 11 May 2010 6:26:48 Hinko Kocevar wrote:
>>>>    
>>>>> Hi all,
>>>>>
>>>>> I'm experiencing some strange behavior when using camonitor against
> an
>>>>> EPICS IOC.
>>>>>
>>>>> For some reason a CA_PROTO_EVENT_ADD response from IOC to CA client
>>>>> does
>>>>> not arrive, or arrives several minutes later after the PV value has
>>>>> changed. Note that first CA_PROTO_EVENT_ADD response is seen
> always,
>>>>> only latter CA_PROTO_EVENT_ADD responses do not arrive (or arrive
>>>>> late)?!
>>>>> This behavior is not seen always - sometimes the IOC would promptly
>>>>> respond with CA_PROTO_EVENT_ADD response when needed.
>>>>>
>>>>> I can see the CA_PROTO_ECHO requests/responses fine on the same
>>>>> camonitor channel link, only CA_PROTO_EVENT_ADD response is not
> seen.
>>>>>
>>>>> Inspecting the IOC I can see that the value did change (on lower
>>>>> levels)
>>>>> and caput response is also valid - updated with new value.
>>>>>
>>>>> I've ruled out the network problems, since the issue is raised even
>>>>> when
>>>>> using cross-over cable to communicate with the IOC. Actually even I
>>>>> update the value in the IOC shell, the camonitor is not refreshed!!
>>>>>
>>>>>
>>>>>
>>>>> Has someone experienced something similar?
>>>>> Are there some conditions that need to fulfilled in order for IOC
> to
>>>>> send a subsequent CA_PROTO_EVENT_ADD response(s)?
>>>>>
>>>>>
>>>>>
>>>>> TIA & HAND,
>>>>> Hinko
>>>>>       
>>>
>>>
>>>   
> 
> 


-- 
Hinko Kocevar
Technical support software engineer
Instrumentation Technologies
Velika pot 22, SI-5250 Solkan - Slovenia
T:+386 5 3352600, F:+386 5 3352601
mailto: hinko.kocevar@i-tech.si

http://www.i-tech.si - When your users demand stability

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