I just recently got tinyos up and working on my computer. I have been going
through some of the examples in the test and tutorial directory. I have
been able to use the tool chain and download to my mica2dot just fine.
However I have not been able to get two motes to communicate to each other.
I
I've not used the micadot, and I think you may be using TOS2 so I can't
be of much real help. But make sure you have defined the same radio
channel or frequency for all your motes, defined the maximum power
(the T1 standard for mica2's was close to minimum...), and that the
antennas on your motes