Hi Ying, Short answer: out of the box, no.
Longer answer: the internal RC oscillator is not stable enough to give you microsecond accuracy. Thus, you have to rely on the 32kHz crystal. This will give you an accuracy of about 30us. I think in the latest CVS tree, there is a version of FTSP that uses the T32khz as a time source. If you really need microsecond accuracy, then you will have to add an external 8MHz (or 4MHz) crystal to the TMote. I have done it before, but it involves some PCB design for an extension board. Cheers, Thomas -- Thomas Schmid Post Doctoral Researcher Center for Embedded Networked Sensing University of California, Los Angeles "The most renewable energy we have is our own potential, and our own passion." - Bertrand Piccard On Tue, Jan 12, 2010 at 1:30 AM, ying chen <[email protected]> wrote: > Hi, > > > > I am testing FTSP on Tmotes. I started from TestFtsp, which can provide > millisecond accuracy. But my own experiment needs microsecond precision. Can > FTSP provide it on tmotes? > > Thanks, > > Ying > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
