Failing to run hello-world example on sky tmote

Question

I'm trying to run the hello-world example in contiki on a sky tmote. I'm using ubuntu and followed this tutorial: http://www.contiki-os.org/start.html#hardware

The first time I executed:

make TARGET=sky hello-world.upload

it worked fine but I got an error when executing:

make TARGET=sky login

../../tools/sky/serialdump-linux -b115200 
make: execvp: ../../tools/sky/serialdump-linux: Permission denied
make: *** [login] Error 127

And now from now on every time I execute

make TARGET=sky hello-world.upload

I get the output from the tutorial (the note)

make z1-reset z1-upload
make[1]: Entering directory `/home/user/contiki/examples/hello-world'
make -k -j 20 z1-reset-sequence
make[2]: Entering directory `/home/user/contiki/examples/hello-world'
Done
make[2]: Leaving directory `/home/user/contiki/examples/hello-world'
make -j 20 z1-upload-sequence
make[2]: Entering directory `/home/user/contiki/examples/hello-world'
Done
make[2]: Leaving directory `/home/user/contiki/examples/hello-world'
make[1]: Leaving directory `/home/user/contiki/examples/hello-world'
rm hello-world.ihex

Before I once tried the instantcontiki with the VMPlayer and when this occured I just had to reconnect the sky mote again via a button in the VMPlayer, but since I'm not using it anymore I don't know what to do.

Also I couldn't figure out how to solve the Error 127 from above.

Greetings, Jan

PS: I'm new to linux

Answer 1

Here is a solution which worked at me:

Find out at which USB is your tmote connected, e.g. USB0 and than just run:

sudo chmod 666 /dev/ttyUSB0

Answer 2

this phrase permission denied indicates that you are not the owner, ie. you are not the root

use sudo su, give your password for the root and repeat the code.

you will not find the error