Experimental Physics and
Industrial Control System

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

The complete line is:

I assume that I am utilizing the following function:

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

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.

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

---

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

---

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