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 <[email protected] > <mailto:[email protected]>>: > > 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: [email protected] <mailto:[email protected]> > Web: www.INFICON.com <http://www.INFICON.com> > > ********************************************************************** > NOTICE: - This message including any attachments is intended only for the > use of the > designated recipient(s) named above and may contain confidential > information protected > by law. If you are not the intended recipient, you are hereby notified > that any > disclosure, copying, distribution, or the taking of any action in > reliance on the > contents of this information is strictly prohibited. If you have > received this > transmission in error, please notify the sender immediately by e-mail and > delete the > original message including any attachments. > *********************************************************************** > > > > ------------------------------------------------------------------------------------------ > > *libftdi* - see http://www.intra2net.com/en/developer/libftdi for details. > To unsubscribe send a mail to [email protected] > <mailto:[email protected]> > > -- Nathaël PAJANI - ED3L - Techno-Innov Internet : http://www.ed3l.fr - http://www.techno-innov.fr -- libftdi - see http://www.intra2net.com/en/developer/libftdi for details. To unsubscribe send a mail to [email protected]
