Hi Jan, Thank you so much for the reply - apparently the current draws are correct. It's not dropping because of some asynchronous command calls that I was making. Once I fixed that, the current draw drops to a fairly low level when I'm not sampling. I would be more attentive to the compilation warnings next time.
Cheers! On Mon, Apr 22, 2013 at 6:51 PM, Jan Hauer <[email protected]> wrote: > Hi Andres, > > 0.5 mA sounds like maybe the reference voltage generator is > responsible for the current draw (see datasheet). This would be > strange, because if you are using (only) an Msp430Adc12ClientAutoDMAC > then the reference voltage generator should never be active, in fact > the component Msp430RefVoltArbiterP shouldn't even be part of you > application. Can you check this via "make telosb verbose"? Otherwise > there might be a problem with resetting the pins - for a quick test: > can you disable the "ADC12_P6PIN_AUTO_CONFIGURE" macro in > Msp430Adc12.h and retry (the ADC readings will be wrong, but maybe > this gives some hint about the extra current consumption). > > Jan > > On Tue, Apr 16, 2013 at 9:04 AM, Andres Mabini <[email protected]> > wrote: > > Hi all, > > > > I hope that you could help or advice me on this. > > > > I have an app which uses the Msp430Adc12ClientAutoDMAC as the ADC > client(I > > am using TelosB). I take ADC samples for a second, release the resource, > > wait for 30 seconds, and then repeat the process all over again. All > works > > fine except that my measurements indicate that the mote consistently > draws > > .5 mA, even during the 30 second interval. Is there a way to further > > minimize this? > > > > In another experiment that I ran(there is no DMA component in the app > used), > > when the radio is turned off between sends, the current draw drops all > the > > way down to 0.1mA(or lower, the datalogger already says 0). Can the same > > level of current draw be achieved when using the ADC? > > > > Much thanks. > > > > > > _______________________________________________ > > Tinyos-help mailing list > > [email protected] > > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >
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