Thank you for the help, Urs, I am not sure if the problem is due to brown-out. Since without re-install the program, that mote cannot function properly again. However, I will try your suggestion to see if brown-out detection will help to prevent this happen.
I never heard about brown-out detection on mote, could you specify where and which datasheet I should looking for? Thanks Tony On Thu, Jan 22, 2009 at 12:59 AM, Urs Hunkeler <[email protected]> wrote: > Hi Tony, > > When the supply voltage drops below a certain level, the microcontroller > starts to behave in an unpredictable way. Usually, after a reset (without > reprogramming) the microcontroller should be working again. > > If your motes work after a reset (without reprogramming), then maybe you > would want to enable the brown-out detection. The brown-out detection will > reset the mote automatically for you (details see in the data-sheet). This > can be enabled with a programmable fuse (BODEN). This detection will, > however, consume additional energy even in sleep modes. > > Cheers, > Urs > > > > Tony Han wrote: > >> Hi All, >> >> Is there anyone have the following problem on your MICAZ? If your power >> supply is not stable, say, on and off rapidly, you will finally loss the >> functionality on your mote. Only after you reinstall that mote, it can >> start >> work again. >> >> I had this question is because when we use solar panel and car battery as >> an >> out-door power source, after months operation without problem. then the >> power balance decreased until un-sufficient for mote during the night. But >> in the next day, when sun rise, it supposes to work due to increased car >> battery voltage. When we send people to check during the day, power is >> enough, but MICAZ was dead. >> >> Anyone have any idea about it? >> >> Thank you very much >> >> Tony >> >
_______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
