topic Re: VME interrupt in LabView in LabVIEW

VME interrupt in LabView

Pilar — Mon, 04 Apr 2005 08:53:00 GMT

Hello,

I have a VME card generating VME interrupts. With certain routines I'm able to read and write from that card in LabView. I would need to know when those interrupts happen in LabView. Anybody could help me?

Many thanks!
Pilar

Re: VME interrupt in LabView

Lycangeek — Mon, 04 Apr 2005 14:12:25 GMT

Use the Event structures in VISA. You can check out the example VI "VXI/VME Interrupt Event Handler".

Re: VME interrupt in LabView

Pilar — Mon, 04 Apr 2005 14:15:59 GMT

Thanks for your answer!
Wouldn't be more appropiate the example Detect Interrupts.vi? I don't have that one. Could you send it to me?

Pilar
casado@ifae.es

Re: VME interrupt in LabView

Lycangeek — Mon, 04 Apr 2005 14:28:34 GMT

That depends on what version of LV you are running. I just opened up my copy of LV 7.1 and took a look at the examples in the browser, but if you have an older copy, the examples could be different - depends on what features were supported when. So, what version of LV and VISA are you using?

Re: VME interrupt in LabView

Pilar — Mon, 04 Apr 2005 14:36:56 GMT

I'm using LV 7.0 and NI-VISA 2.6.1

Pilar
casado@ifae.es

Re: VME interrupt in LabView

Lycangeek — Mon, 04 Apr 2005 14:46:57 GMT

You should have the example already - it is part of the distribution. Take a look in examples\instr\visa.llb.

You also might want to upgrade to the latest version of VISA (I am running 3.2). You can download it at http://digital.ni.com/softlib.nsf/websearch/F20288844692F8D086256EE6006983D8?opendocument (for Windows).

Message Edited by Lycangeek on 04-04-2005 09:48 AM

Re: VME interrupt in LabView

Pilar — Mon, 04 Apr 2005 15:09:31 GMT

I found the directory but don't have Detect Interrupts.vi. Could you send me this vi?
Concerning the VISA version, it is not easy to do the upgrade because my computer does not
have ethernet connection. It is strange that I got this VISA version with and brand new
VME-MXI-2 card.

Many thanks for your help!
Pilar
casado@ifae.es

Re: VME interrupt in LabView

Lycangeek — Mon, 04 Apr 2005 15:56:08 GMT

It isn't Detect Interrupts.vi but VXI/VME Interrupt Event Handler.vi, however, just in case, here it is.

The version of VISA you received depends on when the CD was created for that system, so it isn't surprising that it would be an older version. It also isn't necessary to upgrade in order to get it working, just thought I would give you the upgrade link if you were interested.

Re: VME interrupt in LabView

Pilar — Tue, 05 Apr 2005 10:31:28 GMT

I'm trying to generate interrupts with my CAEN V513 module, but the whole thing is not working. The time expires and no interrupt is received. I don't know at which level the problem is. Apart from LabView is there another mechanism (i.e. a VISA session) to detect the VME interrupts?

Re: VME interrupt in LabView

Lycangeek — Tue, 05 Apr 2005 13:55:38 GMT

Trying running VIC.exe in your NI-VXI software package. If I remember correctly it should have a bus monitor and show you the state of the VME interrupt lines.

Re: VME interrupt in LabView

Pilar — Tue, 05 Apr 2005 14:41:40 GMT

I found VIC.exe. I tried in the interrupt section to see my interrupts but don't succeed. I select Default Controller, then Go but nothing happens when I generate the interrupt with my VME module (if I'm doing it, don't know). Should I look at a different section or do other selections?

Re: VME interrupt in LabView

Lycangeek — Tue, 05 Apr 2005 19:06:44 GMT

Unfortunately I am operating off of memory right now - I don't have any equipment around me.

I would recommend reading through the manuals regarding configuring the VME devices in MAX (I am assuming you are on Windows). I believe you can also assert an interrupt manually with the VME-MXI-2 so you can do that to make sure that your monitor is showing the correct state.

BTW - What version of NI-VXI did you get with it? Also, what is on the other end of the VME-MXI-2? Are you using a PCI-MXI-2 or is this a chassis extender? If so, what is the Slot0 controller?

Re: VME interrupt in LabView

Pilar — Wed, 06 Apr 2005 06:57:25 GMT

O.K. I'll take a look at the manuals in order to try to generate an interrupt with the VME-MXI-2.

My NI-VXI version is 3.3.0. At the end of the VME-MXI-2 there is a PCI-MXI-2 installed in the computer. The slot 0 controller is the VME-MXI-2 (that's my understanding).

Re: VME interrupt in LabView

Shawn B. — Wed, 06 Apr 2005 18:27:44 GMT

Pilar,

When you added your VME device in the Measurement and Automation Explorer (MAX) did you add an Interrupt Level for your device? It is possible if you forgot to add an Interrupt Level resource for your device. I would go through the create new VME device wizard again in MAX and double check all of your settings.

Shawn B.
National Instruments

Re: VME interrupt in LabView

Pilar — Thu, 21 Apr 2005 08:14:15 GMT

Hi Shawn,

Sorry, I was in a conference last week and couldn't reply you.
I went to MAX and try to investigate the configuration of my VME device. In the configuration tree I found my VME device (VXI::256::INSTR(V513)), I went to properties and found General, VME and Resources. There is nothing related to the VME interrupt in these sections. Could you please help me to find the part for the VME interrupt level?

Many thanks, Pilar

Re: VME interrupt

02222782709 — Fri, 13 Feb 2009 08:36:21 GMT

hello.....

i want to know how interrupt can be handle in vme......

i am using v2718 and the labrary provided by caen.

speciffically i want to know how ISR is writen.

If some one had used this controller may have idea of function provided by caen such as CAENVME_IRQWAIT ,CAENVME_IRQENABLE,CAENVME_IRQCHECK and so on.....

In this thing irq wait function is able to detect the interrupt but this function is written in mail function,which eats by cpu timing.

The only thing i want to know is how can i write ISR with out any help from Main function.