Re: get asyn hostInfo

[Mark Rivers via Tech-talk <tech-talk at aps.anl.gov>]

pasynOption->getOption(asynOptionPvt, pasynUserOctet_, "hostInfo", hostbuff, 100 );

It looks like you are not checking the status return of that call.  What does it return?  Please print out the return value.

You are printing the error message:

std::cout << pasynUserOctet_->errorMessage << std::endl;

regardless of the return value of that function.  That could be a stale error message.

Mark

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From: Douglas Araujo <douglas.araujo at ess.eu>
Sent: Thursday, April 4, 2024 7:16 AM
To: Mark Rivers <rivers at cars.uchicago.edu>
Cc: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: Re: get asyn hostInfo

 

Oh, my apologies! I omitted part of the line...

The complete line is:

pasynOption->getOption(asynOptionPvt, pasynUserOctet_, "hostInfo", hostbuff, 100 );

(gdb) p pasynOption

$6 = (asynOption *) 0x7ffff624fcd0 <drvAsynIPPortAsynCommon>

I assume that I am utilizing the following function:

https://github.com/epics-modules/asyn/blob/a94a78987a99b1c36bbd641a67341069dc5d627e/asyn/drvAsynSerial/drvAsynIPPort.c#L888

Douglas

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From: Mark Rivers <rivers at cars.uchicago.edu>
Sent: Thursday, April 4, 2024 3:51:19 PM
To: Douglas Araujo
Cc: tech-talk at aps.anl.gov
Subject: Re: get asyn hostInfo

 

Hi Douglas,

In this line of code: 

•  getOption(asynOptionPvt, pasynUserOctet_, "hostInfo", hostbuff, 100 );

where is the getOption() function defined? Is that a function you wrote?  Because in asynRecord the code is this:

 pasynRecPvt->pasynOption->getOption(pasynRecPvt->asynOptionPvt, pasynUser,

Mark

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From: Douglas Araujo <douglas.araujo at ess.eu>
Sent: Thursday, April 4, 2024 6:15 AM
To: Mark Rivers <rivers at cars.uchicago.edu>
Cc: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: Re: get asyn hostInfo

 

Sure, perhaps I haven't made myself clear, but the code I included in the question is indeed mine. Now, I'm providing the specific block for clarity.

RMMRegisterAccess::RMMRegisterAccess(const std::string& address_info) {

  connect(address_info);
   ...
  asynInterface *pasynInterface;
  pasynInterface = pasynManager->findInterface(pasynUserOctet_, asynCommonType, 1);
  void *asynOptionPvt;
  asynOption *pasynOption;
  pasynOption = (asynOption *) pasynInterface->pinterface;
  asynOptionPvt = pasynInterface->drvPvt;
 
  char hostbuff[100];
  getOption(asynOptionPvt, pasynUserOctet_, "hostInfo", hostbuff, 100 );
  std::cout << pasynUserOctet_->errorMessage << std::endl;

}

asynStatus RMMRegisterAccess::connect(const std::string& address_info) {
  // where address_info is the portName defined in the drvAsynIPPortConfigure

  return pasynOctetSyncIO->connect(address_info.c_str(), 0, &pasynUserOctet_, NULL); 

}

Douglas

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From: Mark Rivers <rivers at cars.uchicago.edu>
Sent: Thursday, April 4, 2024 2:59:14 PM
To: Douglas Araujo
Cc: tech-talk at aps.anl.gov
Subject: Re: get asyn hostInfo

 

Can you share your code?

Sent from my iPhone

On Apr 4, 2024, at 8:50 AM, Douglas Araujo <douglas.araujo at ess.eu> wrote:



Yes, I have confirmed that the value in theHOSTINFO asyn record field is correct:

$ pvget asyn:Test.HOSTINFO

asyn:Test.HOSTINFO <undefined>              "192.168.50.2:65535 UDP"

I also assumed that this should work, but for some reason, I am receiving the error: 192.168.50.2:65535 UDP: Link already open!
So, I am wondering if the instance of pasynOption that I created is receiving the same pasynInterface value that was defined with drvAsynIPPortConfigure and is also being used in the asyn record code.

Douglas

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From: Mark Rivers <rivers at cars.uchicago.edu>
Sent: Thursday, April 4, 2024 2:02:03 PM
To: tech-talk at aps.anl.gov; Douglas Araujo
Subject: Re: get asyn hostInfo

 

If you open the asynRecord OPI screen asynIPPortSetup does it correctly display the current IP host information in the widget labeled "Host info:"?  If so, then using the same code as in the asynRecord should work?

Mark

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From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Douglas Araujo via Tech-talk <tech-talk at aps.anl.gov>
Sent: Thursday, April 4, 2024 2:48 AM
To: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: get asyn hostInfo

 

Hi all, 

Does anyone know how to read the hostInfo value that is passed into the  drvAsynIPPortConfigure function ?

Basically, I have this in my startup script:
epicsEnvSet("IPADDR", "192.168.50.2")
epicsEnvSet("IPPORT", "65535")
drvAsynIPPortConfigure("L0", "$(IPADDR):$(IPPORT) UDP", 0, 0, 1)


And in my c++ code:
status = pasynOctetSyncIO->connect(address_info.c_str(), 0, &pasynUserOctet_, NULL); // where address_info is the portName

So, I tried following the steps inside asynRecord.c:

asynInterface *pasynInterface;
pasynInterface = pasynManager->findInterface(pasynUserOctet_, asynCommonType, 1);
void *asynOptionPvt;
asynOption *pasynOption;
pasynOption = (asynOption *) pasynInterface->pinterface;
asynOptionPvt = pasynInterface->drvPvt;
char hostbuff[100];
getOption(asynOptionPvt, pasynUserOctet_, "hostInfo", hostbuff, 100 );
std::cout << pasynUserOctet_->errorMessage << std::endl;

But I received the message error:
192.168.50.2:65535 UDP: Link already open!

Thanks in advance.

--
Douglas Araujo