On 9/20/14, 9:01 PM, Russell Senior wrote: > If you need to do the symlink, you can do it from a shell with: > > ln -s /dev/ttyACM0 /dev/ttyUSB0
Don't do that (except as a last resort!) The idea is sound, but I believe contemporary Linux handles the /dev directory largely automagically, so symlinks like that will confuse things. I use minicom for all my serial-port-talking needs on Linux, and it works equally well with devices that show up as /dev/ttyACMx and /dev/ttyUSBx. All I have to do is change the name of the port in the minicom preferences. I haven't used Java/rxtx for a while, but it's virtually certain that there's a similar config setting there, and that you can get it to talk to the device just by changing the name as necessary. If you regularly have to switch between devices that show up as /dev/ttyUSBx and /dev/ttyACMx, you might find it easier to configure rxtx to look for the serial device in your home directory (or somewhere OUTSIDE /dev) and then just switch between USB and ACM using Russ's symlink idea. I just think you'll have better luck overall if you avoid making symlinks in /dev while logged in as root. Regards, -- Mersenne Law LLP · www.mersenne.com · +1-503-679-1671 - Small Business, Startup and Intellectual Property Law - 9600 S.W. Oak Street · Suite 500 · Tigard, Oregon 97223
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