On Sun, Dec 8, 2013 at 3:21 PM, John Wilson <kc4...@gmail.com> wrote: > That's partially true. You have the identifier of the device AND the > physical port you plug it into.
Sorry, but the prolific and USB CDC devices do not have an identifier unique to the device, unlike the FTDI where every device has a unique serial number. Maybe you can identify by the device type, but that doesn't help if you have more than one. The location of the device in the USB tree can usually be extracted under linux (udev rules), but relying on that is a huge pain for a laptop where the physical arrangement is fluid. I just brought a CentOS 6 server online that has a 16 port USB/RS232 adapter connected. I stumbled across a new subdirectory structure in /dev/serial/by-id that lists each device with its serial number in the name. There's also /dev/serial/by-path - this is equivalent to using the USB path as you suggested (it's a longer name but you get it for free, without mucking around with udev rules). -Jason kg4wsv _______________________________________________ Xastir mailing list Xastir@lists.xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
