topic Re: Labview AD5933 in Instrument Control (GPIB, Serial, VISA, IVI)

Labview AD5933

brenodee — Tue, 10 Dec 2013 13:35:25 GMT

Hi all, I´m trying to get a communication between Labview and my evaluation board from Analog Devices AD5933 for impedance measurement through USB port. I installed the VISA driver and did all procedure suggested in manual to make my board recognized. I think I had success on it because VISA Interactive Control is able to find and open the resource.

However, unfortunetely I can´t make any write or reading from board but the it´s possible with the driver from windows7.

When I open Measurement & Automation Explorer I can see my my resource installed and inside VISA test panel the usb setting are:

Control Pipe:

Default (0)

Bulk In Pipe:

No pipe

Bulk Out Pipe:

No pipe

In View Attributes I have the following:

Bulk Out Pipe Status ... Invalid Property Value

Bulk In Pipe Status ... Invalid Property Value

Interrupt In Pipe Status ... Invalid Property Value

When I try to wrtie somethig I get:

Unable to start operation because setup is invalid ....

Did anyone face such kind of problem? Is it an USB access problem or impossibility to make connection to the board with this driver from NI?

Thank you!

Re: Labview AD5933

Dennis_Knutson — Tue, 10 Dec 2013 14:51:13 GMT

What driver and manual are you talking about. There are no drivers from NI for this.

Re: Labview AD5933

brenodee — Tue, 10 Dec 2013 16:09:55 GMT

Hi, thanks for your reply.

In fact, It´s not a specific driver from NI to this evaluation board.

I have the board (EVAL - AD5933) plugged in USB and I wanna send some byte to it through USB. After that I´ll do some HMI in Labview.

Then, I used NI VISA driver to recognize my board plugged in USB port in order to send those commads. I´m probably ingeneous of thinking that it is possible. The problems I have now were mentioned before.

egards,

Re: Labview AD5933

Dennis_Knutson — Tue, 10 Dec 2013 16:13:13 GMT

The use of the VISA wizard was probably your first mistake. Why did you use it? Did not the evaluation board come with a USB driver? See if it did and if it creates a virtual com port. Then undo everything you did with the wizard.

Re: Labview AD5933

brenodee — Tue, 10 Dec 2013 16:43:15 GMT

Hi again. I saw some examples using Ni wizard to usb raw communication. That´s the reason I tried. But it´s not working for me.

As you mentioned, I have a software from the Anlog Devices to make communication with the board but I wanna do another HMI using Labview to integrate with my other system.

The driver was installed automaticaly by windows and the board works fine.

Looking at device manager I couldn´t find any virtual COM port. I´m attaching what I have in my system with the board plugged. Can you help me?

Thanks again!

Re: Labview AD5933

Dennis_Knutson — Tue, 10 Dec 2013 16:48:42 GMT

There is no attachment. Look in device manager to see what driver the USB is actually using.

Re: Labview AD5933

brenodee — Tue, 10 Dec 2013 16:57:44 GMT

Hi, sorry about the attachment.

It´s available now. Thank you for your support!

Re: Labview AD5933

Dennis_Knutson — Tue, 10 Dec 2013 17:04:00 GMT

A google search brought up this. It looks like it uses a dll provided by AD.

Re: Labview AD5933

brenodee — Tue, 10 Dec 2013 18:00:08 GMT

I´ve already read something about that. Do you think I have to work with the Labview " Call Library Function Node" . That´s the only way in you point of view?

Thanks for all.

Regards

Re: Labview AD5933

Dennis_Knutson — Tue, 10 Dec 2013 18:11:44 GMT

I think that would be the best way. In order to use the VISA wizard, you would need to get the very low details on the USB protocol. It may be doable but I'm not sure. It would not be easy, in my opinion.

Re: Labview AD5933

brenodee — Wed, 11 Dec 2013 11:00:48 GMT

Hi again, I hope you don´t mind answer another question.

Is there any trick to use a 32 bits dll in LV 64bits?

Thanks again,

Breno

Re: Labview AD5933

agennis — Thu, 16 Nov 2017 15:54:05 GMT

Hi Breno,

Did you find a resolution to your problem? I'm doing the same thing, using LabView with an AD Eval Board and I'm stuck right where you were. I'd appreciate the help.