With TOSSIM/T2 (at least the version in TinyOS 2.0.2/2.0.2 CVS), at least 20 noise traces must be added before a noise model can be reliably generated.
Failure to add at least 20 noise readings (the noise history size) will result in a SEGFAULT or an inconsistent (read: broken) noise model. Even if the simulator doesn't crash, many sample programs may simply "not work" if the motes can not communicate. (Unlike the wiki example, the motes may simply never receive data from each other.) The TOSSIM wiki/tutorial does not seem to make this point clear and the sample Meyer noise source posted seems to indicate that a smaller sample size is allowed. Explicitly stating (in big bold letters) the requirements of generating a noise model could reduce problems encountered using TOSSIM/T2. Paul _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
