Hi Fernando, When you are logged in as your user (without sudo), your user apparently doesn't have access to the serial port. The access to the serial port happens over a virtual file (device file), whose permissions behave the same as for regular files. Instead of changing the serial port's permissions, it is usually a better idea to enable serial port access for the user. You can find out which group has access rights to the serial port with a simple ls command "ls -l /dev/ttyS0". The group is usually either wheel or uucp. The command to add the group to your user might vary depending on the distribution you're using. Try the command "sudo usermod -aG wheel <your username>" to add the group wheel to your user (replace <your username> with your username).
I'm not that familiar with what actually happens when you use sudo. I think it not only changes the user but also some environment variables. Therefore it could be that it changes the PATH environment variable and then uses a different java version (if you have multiple java versions installed). Or it might change some other variables which java then reads to construct its library search path. Anyways, I suggest you give your user the rights to access the serial port. Cheers, Urs [EMAIL PROTECTED] wrote: > Well, when I try to execute "java net.tinyos.sf.SerialForwarder -port 9002 > -comm serial@/dev/ttyS0:mica2 ", the java serial forwarder opens and the > following message appears: > "Could not open /dev/ttyS0: TOSComm JNI library runtime error: open: > Permission denied > serial@/dev/ttyS0:57600 died - restarting". > > And when I try to run the same command with sudo (so I can have > permission), the forwarder do not even start, and this message appear: > "The toscomm JNI library was not found. > Check that your tinyos-tools package is installed and try > rerunning tos-install-jni. > Aborting." > > I do not understand that, and have no idea of what to do, beacause the > application is apparently working, as it starts correctly when I type the > command without 'sudo', but when I try with it, so that it would work > correctly, then it just do not even start > > > Any idea of what to do? > > Thanks, > Fernando. _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
