USB Device ID

USB Device ID

[Charles Harris]

Hi Alan and all
Noticed conversation as below on earlier post.

I would like to know if this code could be used in a similar case.

Linux Mint 21.3   Using LibreCalc

With USB RFID tag readers, (2 or more reader)  most enter direct into open focus spreadsheet.  However with no device number.   Have same pid and vid.

As the read from USB tag goes to the spreadsheet, can the device number  eg 004 and the bus number eg 004 be appended to the data read into the spreadsheet.  This would enable spreadsheet identify each reader and its location, to manipulate the tag reads by the  location etc.

If so, how do I go about setting up?

Your comments and advice would be much appreciated.

Charles Harris

Re: USB Device ID

[Greg KH]

On Tue, May 14, 2024 at 01:10:10PM +1200, Charles Harris wrote:
> Hi Alan and all
> Noticed conversation as below on earlier post.
> 
> I would like to know if this code could be used in a similar case.
> 
> Linux Mint 21.3   Using LibreCalc
> 
> With USB RFID tag readers, (2 or more reader)  most enter direct into open focus spreadsheet.  However with no device number.   Have same pid and vid.
> 
> As the read from USB tag goes to the spreadsheet, can the device number  eg 004 and the bus number eg 004 be appended to the data read into the spreadsheet.  This would enable spreadsheet identify each reader and its location, to manipulate the tag reads by the  location etc.
> 
> If so, how do I go about setting up?

Not directly from the kernel, no, you need to write a userspace program
to do this somehow, sorry.

good luck!

greg k-h