How to communicate with my Digital Mixer via USB in LabVIEW?

[Takeshi Ooi]

Hi, all!

I need some help for LabVIEW. Anyone who know that, please teach me, thanks.

I have a Digital Mixer and I need to test about its button functions with LabVIEW via USB.

When I plug the USB cable into the USB port, the window install its driver automaticly.

Can LabVIEW communicate with my Digital Mixer? And how? Got any example? If got, please send it to me.

For your info, I am using Window XP and LabVIEW 8.2.

[Albert.Geven]

And which mixer do you use, and where is the info about the communication except that it is over USB

[Takeshi Ooi]

Hi! Thanks for reply.

Actually I am working on to simplified the testing method for AKAI product.

I want to develop a LabVIEW application to test the product LED button On/Off, button function, and also the knob function.

All of these is to simplified the quality testing.

For the product, please refer to the below link.

http://www.akaipro.com/apc40

And, the main communication device is the USB port.

[Albert.Geven]

Hi

I see what you mean. The driver for the mixerfunctionality loads indeed when plugged in.

And now you should be able to communicate with the mixer via the software API that also will be used by the normal software.

It can be activeX or a dll (hopefully with headerfile) that you can call.

On the link you gave no real software or driver was available. It probably only is on the cd deliverd with the instrument.

[Takeshi Ooi]

Hi! Thank again for your info.

I am still learning LabVIEW. So, I am confusing with the VISA, activeX and etc.

Do you have any example that suitable for me to study to complete my project?

About the method to communicate with my mixer.

Thanks.

[S.AHMAD]

Hi Takeshi,

There are several example to communicate using Labview with USB.You can find iexample  VI in Labview find example finder.You click on help>Select find example> and click search tab in find example winodw.......

Please see the attached screen shoot of  Labview example finder.

regards.

S.Ahmad.

[Dennis_Knutson]

I'm not sure those examples will help at all. I doubt that using USB RAW is the way to go.

I had a quick look at the product's web page and it says that it is 'class compliant' and does not need any drivers installed. That implies that the driver is part of windows. What I don't know is which USB class that this would be. You might ask the vendor or check the windows device manager. Checking www.usb.org might also help. Once you find out the class, you should then be able to determine which windows dll it uses. You'll probably then need to check other forums (i.e. MSDN) for examples on how to call the dll and what functions are available. You may get lucky but my guess is that if you find some example code, it will not be in LabVIEW. Most likely c/c++. If you do find some examples in other languages, you might want to post that code. someone may be able to help translate it into LabVIEW and the Call Library Function Node.

[Albert.Geven]

If you have a dll with good definitions LabVIEW itself can build the interface (tools/import/shared library)  but you still need a good description of the functions.

[Dennis_Knutson]

It looks like there is a audio class with support for mixers.