Joe, Does It means that the minimum energy consumed for a transmition/reception is the power consumption of the tmote (about 60mW) multiplied by 3-10msec? Then, The worst case is 0.6 mJoules!! Uau Missatge de Joe Polastre <[EMAIL PROTECTED]>:
> What do you mean that your motes should respond immediately to a > message? What kind of response are you looking for? > > The microcontroller automatically enters sleep state when no tasks are > pending. It takes about 1-6us for the microcontroller to wake. > > The radio is on continuously unless you set a schedule using SP in > Boomerang or explicitly turn the radio on or off. > > If you are asking "why does it take 3-10ms to transmit a message in > response to a received message", the answer is due to 3 things: (1) > the switching time of the radio, (2) the CSMA backoff period, and (3) > the processing overhead of receiving the packet, creating a new > packet, and putting it into the radio's transmit buffer. > > If this does not answer your question, please clarify exactly what you > are doing and expecting in detail. > > -Joe > > On 7/19/06, giovanni gamba <[EMAIL PROTECTED]> wrote: > > I, i'm working on Tmote Sky and i have a question on power saving state. > > When the mote is not active, does it go in a power saving state by > default? > > My question has a precise aim... when my motes receive a message they > > should response immediately, but i see a delay of several (3-10) ms. > > Is this normal? I see something on papers from Moteiv and i see that > the > > radio has to wake up and this takes few ms. > > I do not formally put my motes in power down mode... (i mean, i don't > use > > commands or modules for this). > > > > I would like to know if this behaviour is correct. > > Thank you very much > > > > _______________________________________________ > > Tinyos-help mailing list > > Tinyos-help@Millennium.Berkeley.EDU > > https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > > > > > _______________________________________________ > Tinyos-help mailing list > Tinyos-help@Millennium.Berkeley.EDU > https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > ------------------------------------------------- This mail sent through IMP: http://horde.org/imp/ _______________________________________________ Tinyos-help mailing list Tinyos-help@Millennium.Berkeley.EDU https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
