Experimental Physics and
Industrial Control System

Hinko Kocevar <[email protected]> · Mon, 23 Aug 2010 12:19:22 +0200

Hi,

On 08/20/10 17:41, Eric Norum wrote:
> On Aug 19, 2010, at 11:37 PM, Hinko Kocevar wrote:
> 
>> Hi,
>>
>> On 08/19/10 21:35, Eric Norum wrote:
>>> What low-level driver are you using?  i.e. what drvAsyn.......Configure command are you using to create the port in question?
>>
>> I'm using drvAsynIPPortConfigure() to configure access to my network
>> device that implements SCPI interface. This is not a hardware GPIB device.
> 
> The devGpib device support above an ASYN IP Port driver does not handle SRQ processing nor unsolicited input of any kind. 

OK then. I think this is my problem, since my device is accessible only
by 'telnet like' protocol, no other interface is possible. I'm not sure
if any SRQs are sent out at all by the device..

> The devGpib device support above the VXI-11 driver driver does handle SRQs.  Does your device provide a VXI-11 interface?  
> 
> An alternative solution might be to switch to streamDevice device support which does provide support for I/O Intr operations.
> 
>  
> Can you provide some more details of the communication protocol that you're using?   How does the device send SRQs?  What I/O Intr operations do you want to implement?
> 

The device has a simple network access (via e.g. telnet) that allows for
sending and receiving the SCPI messages.

Now that you explained a bit what is needed to make I/O Intr work, I
don't think it is possible to get the I/O Intr SRQ.

I basically want to monitor a set of values via EPICS monitor mechanism,
so my initial goal was make them refresh on timely basis.

Thanks for the help!

Best regards,
Hinko

-- 
Hinko Kocevar
Technical support software engineer
Instrumentation Technologies d.d.
Velika pot 22, SI-5250 Solkan - Slovenia
T:+386 5 3352600, F:+386 5 3352601
mailto: [email protected]

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System