Hi,

When you're logging in as root, do you source your setup.bash file to get
the correct ROS configuration?

You could also just run:
sudo chmod 777 /dev/rtc

And then you'd be able to access the /dev/rtc as normal user.

Cheers,

Ugo

On Tue, Jun 7, 2011 at 5:21 PM, Ashwin V Kamath <ashwin24udp@gmail.com>wrote:

> i am trying to run the following tutorial
> :http://winnie.kuis.kyoto-u.ac.jp/HARK/wiki.cgi?page=HARK-ROS+Tutorial+2<http://winnie.kuis.kyoto-u.ac.jp/HARK/wiki.cgi?page=HARK-ROS+Tutorial+2>
>
> but i get the following error and the program stops abruptly:
>
>
> [ INFO] [1307457046.525074887]: Connected to master at [localhost:11311]
> ROS node : HARK_MASTER_NODE generated...
> /dev/rtc: Permission denied
> Cannot open /dev/rtc
> ioctl: Bad file descriptor
> node_RosAddHarkIntClient_1 constructor end...
> node_RosAddHarkIntClient_1 initialized...
> node_RosAddHarkIntServer_1 initialized...
> ROS initialized...
> Segmentation fault
>
> since i was having issues with permissions i tried using sudo and ran the
> file in terminal,but i get the following error;
>
> ROS_ROOT is not set!  Using default rosconsole configuration values
> UINodeRepository::Scan()
> Scanning def /usr/lib/flowdesigner/toolbox
> done loading def files
> loading XML document from memory
> done!
> Building network  :MAIN
> [FATAL] [1307457375.864763327]: ROS_MASTER_URI is not defined in the
> environment. Either type the following or (preferrably) add this to your
> ~/.bashrc file in order set up your local machine as a ROS master:
>
> export ROS_MASTER_URI=http://localhost:11311
>
> then, type 'roscore' in another shell to actually launch the master
> program.
> [FATAL] [1307457375.864837707]: BREAKPOINT HIT
>         file =
> /tmp/buildd/ros-cturtle-ros-1.2.6/debian/ros-cturtle-ros/opt/ros/cturtle/ros/core/roscpp/src/libros/master.cpp
>
>         line=70
>
> Trace/breakpoint trap
>
> i exported the ROS_MASTER_URI variable in the .bashrc file and started
> roscore in a new terminal.but the result is same.i still get the same
> error.Can some one please tell me how to resolve this issue.
>
> _______________________________________________
> ros-users mailing list
> ros-users@code.ros.org
> https://code.ros.org/mailman/listinfo/ros-users
>
>


-- 
Ugo Cupcic | Shadow Robot Company | ugo@shadowrobot.com
Software Engineer | 251 Liverpool Road |
need a Hand? | London N1 1LX | +44 20 7700 2487
http://www.shadowrobot.com/hand/ @shadowrobot