Troubleshooting
Permission denied
If you try to connect to a mote and receive a permission error, you may need to add yourself to the dialout group. The error may look something like the following:
/home/user/contiki/tools/sky/serialdump-linux -b115200 /dev/ttyUSB0 connecting to /dev/ttyUSB0 (115200) /dev/ttyUSB0: Permission denied make: *** [login] Error 255
To resolve the issue, simply use the following command:
sudo adduser <username> dialout
If that doesnot work If you are getting an error /dev/ttyUSB0 Can't open port Error 1 followed by errors in the make file
Trying the following command which should give the desired output make TARGET=sky sky-motelist (sky can be replaced by the mote which is being used e.g z1)
The desired output ../../tools/sky/motelist-linux Reference Device Description
---------------- ---------------------------------------------
M4A7J5HF /dev/ttyUSB0 Moteiv tmote sky
This means it is a common serial port connection problem with Ubuntu 12.04 LTS.
sudo apt-get remove modemmanager
sudo adduser $USER dialout (or) sudo usermod -a -G dialout $USER // adds the user to the dialout // replace $USER by the username sudo reboot id -Gn And check now if the device is attached to the dialout user group.
ls -l /dev/ttyUSB0 crw-rw---- 1 root dialout 188, 0 Mar 5 19:58 /dev/ttyUSB0
There is no need to mess with dev rules or u permissions
If you get a error saying
make: ../../tools/sky/serialdump-linux: Command not found make: *** [login] Error 127
Try the following question if the answers are true then this procedure for troubleshooting Are you using a 64bit version of Ubuntu? Are you using a Ubuntu 12.04 LTS or newer versions of it?
Now, try few commands like ldd serialdump-linux
The output look similar to the following ldd serialdump-linux
linux-gate.so.1 => (0xf772d000)
libc.so.6 => /lib32/libc.so.6 (0xf75b4000)
/lib/ld-linux.so.2 (0xf772e000)
Then it means that you have to install 32-bit packages. Remember to add i386 architecture or you won't be able to install 32-bit packages: sudo dpkg --add-architecture i386 sudo apt-get update sudo apt-get install ia32-libs
Issue with make login
If you are trying to execute the serial-dump application (contiki/tools/sky/serialdump-linux) and see the message: "No such file or directory", it means that you are running in a 64-bit operating system that does not have proper 32-bit libraries installed. Since serialdump-linux is a pre-compiled 32-bit tool you need to execute the following command to install the necessary libraries:
sudo apt-get install ia32-libs
