Hi all
I made a kernel patch to get static usb-serial numbering according to physical
connection
port for Alcatel-lucent, because they needed an way to identify which of the
(up to) 64
devices was related to which tty, without config of rules or other
identification process
of the devices.
I never had time to commit the code to the kernel though I had their
acknowledgment for
this (and it is GPL code anyway :), but I can make it available.
You will find in the patches how to identify a specific USB port and how to
change the USB
numbering shcheme (on simply add a message in syslog which allows easy
identification of
which port holds which device.
Let me know if you are interrested.
As I'm working as a freelance, if you need support to integrate it in your
specific
application I can propose my services for this.
Thanks.
+++
On 31/08/2015 20:52, E.S. Rosenberg wrote:
> I don't know if you can get the port number easily (or if it will be
> meaningful), but in a
> project I worked on we used the chips' serial number to differentiate between
> multiple
> chips present.
>
> You can find the code here:
> https://github.com/OpenLightingProject/ola/blob/master/plugins/ftdidmx/FtdiWidget.cpp
>
> We used ftdi_usb_get_strings() - see line 143.
>
> HTH,
> Eli
>
> 2015-08-31 17:58 GMT+03:00 <Bryan.Richmond@xxxxxxxxxxx
> <mailto:Bryan.Richmond@xxxxxxxxxxx>>:
>
> I'm trying to figure out a way to find out which usb port a device is
> connected to. I
> have mulitiple of the same type of FT2232H chips hooked up.
> libusb has this command libusb_get_port_numbers. but it takes a
> libusb_device as an
> argument.
>
> I tried to use libusb_get_device((&ftdic)->usb_dev), but this gave me a
> segfault.
>
> Any help would be extremely appreciated.
>
>
> Bryan T. Richmond
> Software Engineer
> Environmental Sensors
>
> INFICON, Inc
> 2 Technology Place
> East Syracuse, NY 13057-9714
>
> Phone: (315) 434-2559 <tel:%28315%29%20434-2559>
> Fax: (315) 437-3803 <tel:%28315%29%20437-3803>
>
> E-Mail: bryan.richmond@xxxxxxxxxxx <mailto:bryan.richmond@xxxxxxxxxxx>
> Web: www.INFICON.com <http://www.INFICON.com>
>
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