ibwait rqs

[stleric]

I have a tnt based pci gpib card and I'm trying to get 'ibwait( dev, rqs )' to work.  The actually call is "ibwait( dev, TIMO | RQS ) and it alway returns because the call times out.  The device generates service requests and the board version, "ibwait( board, TIMO | SRQI )", works fine. When I inspect ibsta I can never find any indication that the RQS bit is ever set. 

So my question is, what am I doing wrong; what am I not doing right?  I precede the ibwait with "ibconfig(  board, IbcAUTOPOLL, 1 )".  So what else am I missing?  BTW, I'm actually using linux-gpib rather than NI488.2 (can't get the NI thing to build on opensuse 11.4).

TIA,

eric

[JÞB]

is there another instrument on the bus with a lower address that has asserted RQS? Polling is sequential and was originally intended to give higher priority to lower address values.

[stleric]

No, there is only the board/controller and one device (an HP3478A DMM, if memory serves).

eric

[Kyle_M]

Eric,

Is it only the ibwait function that isn't working, or is it a communcation issue in general?

Regards,

Kyle Mozdzyn

Applications Engineering

National Instruments

[stleric]

To the extent that I've looked, it's only the specific case of ibwait on rqs (i.e. ibwait( device, RQS ) ).  Ibwait works with TIMO and SRQI flags; ibrsp, ibrd, ibwrt all work.  Just to be clear, my problem is with the linux-gpib software. 

eric

[Kyle_M]

Eric,

If its an issue with linux-gpib software, you may want to shoot their mailing list a problem to see if they can also help you here: http://sourceforge.net/mail/?group_id=42378 

Regards,

Kyle Mozdzyn

Applications Engineering

National Instruments 

[stleric]

First thing I did.  I'll give it another shot though.

[Kyle_M]

Eric, 

Let me know if you hear back from them. Im curious as to whats going on. 

Regards,
Kyle Mozdzyn

Applications Engineering

National Instruments