Hi, I am not aware of the problem of adc data corruption on Micaz.
But I have succesfully used manual (means application layer controlled) radio turn On/Off in my applications. My application made radio On for 200ms every 10 sec for saving power. (as micaz-CC2420 didnt have low power implementation in 1.1.14. And still I think low power micaz-cc2420 is not stabilized in tinyos2.0 also) Any way, if your need matches this, I can give you the code. BTW I used TinyOS1.1.14, which I think is not much diferent from 1.1.15 in terms of Radio. Regards --- Philip Levis <[EMAIL PROTECTED]> wrote: > On Feb 2, 2007, at 8:40 AM, Michael Collett wrote: > > > > > Hi, > > > > Platform: MicaZ > > OS: TinyOS 1.15 (I think, definitely not 2.0) > > Application: Adapted from OscilloscopeRF > > > > I've noticed that during readings of the ADC, > radio activity > > (reception or transmission) can cause the data to > change > > dramatically (probably due to the drain on the > power supply for the > > ADC reference voltage). I've tried calling > ComControl.stop() and > > CommControl.start() either side of taking data, > but the radio > > doesn't seem to start back up again. > > > > Is there a way to suspend the radio during a > measurement to prevent > > the data being affected. I know that I could just > set a lower > > sample rate and then have careful timing to stop > them overlapping, > > but I would like to find a more rigorous way of > solving the problem. > > Geoffrey Werner-Allen (Harvard) noted this issue in > his recent paper > in OSDI on a Volcano deployment. The paper says they > fixed the > problem, so he might have code for this purpose. > > Phil > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > ____________________________________________________________________________________ Sucker-punch spam with award-winning protection. Try the free Yahoo! Mail Beta. http://advision.webevents.yahoo.com/mailbeta/features_spam.html _______________________________________________ Tinyos-help mailing list [email protected] https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
