USB Enumeration

[Sidd]

How do I detect USB enumeration in LabVIEW? I want to detect when a USB device has been plugged in.

[Guruthilak]

check this

Guru

[Mathan]

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Guruthilak wrote:

check this

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Dear Guru,

The link you attached is showing some exception error. HTTP Web Server: Lotus Notes Exception - Entry not found in index.

I hope devcon will do what you want. Search the forum and you will get lot more information. Post back for any kinda queries.

[Guruthilak]

Thanks mathan..

Couple of extra charaters got added to the hyperlink.. See this

Guru

[smercurio_fc]

If you're on Windows you can also use the Windows Message Queue Library.

[Sidd]

Thanks. The devcon utility will work, but it pops up a command prompt window, which is undesirable. The Window message queue library seems a bit complicated.  Actually I want to detect a USB device which enumerates as a COM port. I believe the VISA Find Resource function might work for me.

Anything wrong this this...?

[ADrexelDragon]

When I tried to used this same system the output (find list) gave me the reading "ASRL3::INSTR" I believe this means COM3. Did you have the same outcome? Also, if you open up MAX (Measurement & Automation), you can communicate with your device using VISA interface.

Message Edited by ADrexelDragon on 04-12-2010 02:35 PM

[Sidd]

Yes, for the find list I get an array of serial and parallel ports available on my PC.

[ADrexelDragon]

It looks like you found out which USB port each input is.

[slipstick · Accepted solution]

Sidd,

off the bottom of the command window vi is a boolean to run the window minimized.

Tay