Is there any function which can detect if one USB port is available to insert to PC

[shawn1]

Is there any function which can detect if one USB port  is available to  insert to PC?  Please help me .

[K C]

Hi,

If you use FTDI devices you can detect them by a name which is programmed into the devices.

Kees

[jwscs]

google came up with an answer

https://forums.ni.com/t5/LabVIEW/Programmatically-read-list-of-Windows-USB-ports/td-p/1013586

which links to

http://forums.ni.com/t5/LabVIEW/Access-device-manager-through-labview/m-p/700022?view=by_date_ascend...

so you would need the tool "devcon.exe"

see https://docs.microsoft.com/en-us/windows-hardware/drivers/devtest/devcon

and run it with the "System Exec.vi"

to get the devcon tool, you would either have to get (and install) the WDK,

or trust this guy http://forums.ni.com/t5/LabVIEW/Device-manager-Disable-the-Secondary-IDE-channel/m-p/793778#M362380

hope that is what you were looking for

[jwscs]

https://superuser.com/questions/1002950/quick-method-to-install-devcon-exe

http://digital.ni.com/public.nsf/allkb/8E19CA81874FFDD786256BE40066C151

[shawn1]

Thanks your reply,  yes, I used FTDI devices, could you help me which function should i use to detect the devices name?

[K C]

Hi,

With the FT_PROG utility from FTDI you can configure your FTDI device. With this you can also give it a custom serial number/name.

One of the FTDI VI's is open device by serial number. With this handle you get from this VI you can retrieve more information like COM port number.

Let me know if you need more information.

Kees

[shawn1]

Thanks for your reply, I am sure your way may works well. But first ,I need to find  this VI(One of the FTDI VI's is open device by serial number),  haha, That will be wonderful if your have this VI......

[shawn1]

Thanks for your reply, I am sure your way may works well. But first ,I need to find  this VI(One of the FTDI VI's is open device by serial number),  HAHA, That will be wonderful if your have this VI......

[K C]

Well I cannot find it myself anymore at the website. But here is the ZIP with the original VI's and the VI's that I made (as drivers) with error handling.

Kees