NI488.2 C# Device.Notify() Example Does Not Execute Device Notify - Why Doesn't the Device.Notify() callback work with GpibStatusFlags.DeviceServiceRequest?

[dmcomer]

I am working on a driver that required an event raised back whenever a device's SRQ line is asserted. Sounds simple enough, and the Device.Notify() method should fit the bill. However, I am finding that only the Board.Notify() method (using the GpibStatusFlags.ServiceRequest) works, and not the Device.Notify() method (using GpibStatusFlags.DeviceServiceRequest). There are two possibilities that I can think of:

1) The auto serial pool flag is disabled  - can't figure out where the flag is set.

2) This is not supported by the instrument - Not sure why that would be the case.

I don't think it's my software (famous last words), because the example supplied by NI does not work as well. The example can be found at:

C:\Documents and Settings\All Users\Documents\National Instruments\NI-488.2\Languages\DotNET2.0\Notify\cs

for a "standard" NI488.2 installation.

Has anyone successfully used Device.Notify() in a .NET application, preferable C#? Can you offer some words of advice on what may be the problem?

Thanks,

Dave

Software Details:

NI488.2, version 2.52

Microsoft Visual Studio 2005 (FW2)

Hardware details:

Windows XP/SP2

NI488-USB-HS

Keithley 2602

[Chad B]

Dave,

When you say "it doesn't work," what exactly do you mean?  Do you receive an error or warning, or does it just silently fail?