Hi Jawad, On Tuesday 08 October 2013 06:43:18 Jawad Hassan wrote: > We're trying to access the USB serial port using rxtx on a java application > on Yocto. The problem is that we're unable to list out any ports on the > Nitrogen Lite board, we think this could be a permissions issue, if anyone > has been able to do this or any resources that can help us in getting this > done.
It's hard to say for sure without further details, but assuming the device nodes actually exist in /dev and it's a typical device permissions issue there are two options: 1) Look at the /dev/ttyUSB* device nodes that exist and see if there is already a group assigned with write access; if so you just need to ensure the user you are running as is a member of that group. 2) Create a udev rule to set the device permissions correctly. This would be a matter of creating a recipe to install an extra file to /etc/udev/rules.d that assigned the desired permissions. There are lots of HOWTOs out there on the web for this, e.g.: http://sourceforge.net/apps/mediawiki/gizmod/index.php?title=HOWTO_-_Setting_Input_Device_Permissions_-_Creating_a_udev_Rule Cheers, Paul -- Paul Eggleton Intel Open Source Technology Centre _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto