Hi Daniel, Thank you.
I looked into the timer issue as you suggested. But I found out that the PowerCycle component is already using Timer0 in Async mode ( through HplAtm128Timer0AsyncP.nc). Please correct me if I am wrong. I am using tinyOS2.0.2. Which version you are using? Can you please recheck whether the PowerCycle is using timer0 or Timer1. Regards Ravi -- Daniel Widyanto <[EMAIL PROTECTED]> wrote: > > Dear Ravi, > > I've also done some test for CTP currrent > consumption using micaz. > I have the same result as you are. It took around 30 > min for a node > to join a network, and the minimum current > consumption is around > 5-6mA (not shown in my graph). > > My test result (along with the firmware that I used) > is in : > http://gamedevel.wordpress.com/2007/08/06/micaz-platform-current-consumption-with-tinyos-2x-multiple-hop-radio-and-power-management/ > > A bit misuse of my personal blog. But I want to know > whether others > has the same experience with T2.0.1 > > I think the 5-6mA represents IDLE sleeping mode, > which is caused > by the Timer1. The Timer1 is used to cycle the > radio. Thus, according > to getPowerState() in McuSleepC.nc in > tos/chips/atm128, if Timer1 > overflow interrupt is activated the sleep mode > should be IDLE. > > So, if we move the power cycle from Timer1 to Timer0 > ASYNC, > I think we can use POWER_SAVE idle mode (around 8uA > according > to the datasheet). > > Am I correct ? > > Regards, > > -daniel > > -------- Original Message -------- > > From: Ravi Prasad <[EMAIL PROTECTED]> > > Sent: Monday, August 06, 2007 9:28 AM > > To: [EMAIL PROTECTED] > > Subject: Re: [Tinyos-help] Again!!!! Low-power > CC2420 multihop in TinyOS2.x question???? > > > > Hi Roman, > > > > Thanks for your suggestions. > > > > The modifications you stated will help reduce > power > > consumption. > > > > But again looking into your suggestions what I did > > should give a low power consumption (=~ 200uA to > > 300uA) in general case. Because if I do not use > > rxSleep for packets forwarded directly to root, it > > will help reduce power consumption ONLY in nodes > at > > single hop distance from root. Also for > accumulating > > packets and sending in a burst will help in case > of > > medium to high network traffic. But I tested with > very > > low network traffic. > > > > Please correct me if I am wrong. > > > > The last suggestion to modify offsets and windows > is > > not very clear to me. I am looking into it. But it > > would be great if you can elaborate a bit. > > > > Also I am very keen to know the exact power > > consumption you acheived by using LPL in Tmotes. > > > > Because it is very weird that in micaz i get 4mA > sleep > > current and in Tmote it is 200-300uA. ATmega128 > has > > higher sleep current as compared to Msp430. We can > > also assume that micaz board is more power hungry > then > > telos. But the difference should not be more than > few > > 10uA. > > > > > > Regards > > Ravi > > > > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > ____________________________________________________________________________________ Boardwalk for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games. http://get.games.yahoo.com/proddesc?gamekey=monopolyherenow _______________________________________________ Tinyos-help mailing list [email protected] https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
