How to find COM port for a specific USB device

[Ranjeet_Singh]

Hi dave,

              when you connect your USB and you have insalled the usb to serial driver for that USB then it will automatically read in device manger. Here is the simple VI I wrote long back.

Let me know if you want some help

[Joncombat]

I am using CVI, not labview.  Is there a way to search windows for the USB serial number and obtain the comport address programatically?

[Dennis_Knutson]

If you are using cvi, then post to that board.

[abeaver]

Sorry for once again resurrecting an old thread but I came across this looking for an answer.

To find COM port numbers of FTDI Chips see my post here:

http://forums.ni.com/t5/LabVIEW/Finding-FTDI-Chip-COM-Port-Numbers/td-p/3123726

[thanhlq]

Hello Matthew,

I am having visual c++ code that enumerate all USB devices and I have attached a usb-to-serial but I cannot get the com port (com4)..

I have the usb hub/port, do you know a way to get com port from hub/port from Windows Driver kit or something else that work with visual c++ (win32)?

Thanks so much,

[paul_cardinale]

Try this.

[paul_cardinale]

Oops. Forgot all the subVIs.  Here's the whole package.

[WCannon]

If your FTDI serial-converter device reports a serial number, then Windows will always assign it to the same COM port (if that COM port is available).  If it does not report a serial number, then Windows will assign whatever COM port number is convenient.

[dineshmeena]

 sir, 

pls send a 2013 version of this code

[paul_cardinale]

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@dineshmeena wrote:

 sir, 

pls send a 2013 version of this code

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You wrote "sir", but you don't indicate which "sir" you are referring to.  Are you referring to me?

You wrote "this code", but you don't mention which code.  Are you referring to "Find Specific USB Com Port.llb"?