On Dec 7, 2004, at 9:39 AM, Jan Beutel wrote:
Hi,
Is there any good reason as to why the fuse bits are set on every upload of
a new program using uisp? I mean, isn't it enough to do this once and then
leave them set as they are?
I remember we had a discussion at some time back about "dead" atmels but
can't recall all the datails. I managed to "revive" dead atmels using an
external signal to reset the correct clock source if things went wrong. But
I guess this is something that happens infrequently to a standard user, or
am I wrong?
Sometimes -- for a wide range of reasons -- the fuse bits become set improperly. This can lead to really weird behavior which is very hard to debug or figure out[1]. Among other things, it leads to lots of cries for help on tinyos-help. Resetting them to the proper values every time removes the problem and saves a lot of people's time.
Phil
[1] E.g., seeing timer skew/missed timers with power management when the wakeup latency fuse is set incorrectly. Some motes work fine, others don't...
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"We shall not cease from exploration And the end of all our exploring Will be to arrive where we started And know the place for the first time."
- T. S. Eliot, 'Little Gidding'
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