I was measuring at the wrong points. I was using batteries to power the mote, with the switch in the off position then using a multimeter and measuring the current flow from the positive terminal and the center pin on the switch. By moving the switch to the center the correct reading was obtained.
Thanks for your help and patience. Charles On Thu, Jan 29, 2009 at 12:08 PM, Janos Sallai <[email protected]>wrote: > Charles, > > Here's my srec file from apps/Null/build/iris. > > Janos > > > On Thu, Jan 29, 2009 at 11:06 AM, Janos Sallai <[email protected] > > wrote: > >> Charles, >> >> I just measured the iris power consumption, and it appears to be about >> 30uA when the mote sleeps. >> >> I modified apps/Null/NullAppC.nc as follows: >> >> configuration NullAppC{} >> implementation { >> components MainC, NullC; >> #ifdef PLATFORM_IRIS >> components ActiveMessageC; >> #endif >> >> MainC.Boot <- NullC; >> } >> >> (I'm getting 2mA if ActiveMessageC is not compiled in. This is how much >> the RF230 draws when it's on but not receiving or transmitting.) >> >> This is with the most up-to-date sources from the CVS, though I measured >> the same low current draw half a year ago, as well. >> >> For the measurement, I used a lab power supply set to 3V and a high >> precision multimeter (HP34401A) serially connected to the mote. >> >> I can send you my binary to test if the problem is with your measurement >> setup. >> >> Janos >> >> >> On Thu, Jan 29, 2009 at 8:29 AM, Charles Elliott < >> [email protected]> wrote: >> >>> Hi Miklos >>> >>> Without using ActiveMessageC the current was 4.5mA, using ActiveMessageC >>> the current was 2.8mA >>> >>> Charles >>> >>> On Thu, Jan 29, 2009 at 3:47 AM, Miklos Maroti <[email protected] >>> > wrote: >>> >>>> Hi Charles, >>>> >>>> Does it make any difference if you have the ActiveMessage included or >>>> not? How much does it draw without the ActiveMessage? >>>> >>>> Miklos >>>> >>>> On Wed, Jan 28, 2009 at 9:02 PM, Charles Elliott >>>> <[email protected]> wrote: >>>> > Hi Janos >>>> > >>>> > I tried taking out those lines an was still getting 3mA draw. >>>> > >>>> > I've switched to the Null application adding the flowing line to >>>> > NullAppC.nc: >>>> > "47 components ActiveMessageC;" >>>> > >>>> > No other changes were made and there is still 3mA of current flowing. >>>> > >>>> > Charles >>>> > >>>> > On Fri, Jan 23, 2009 at 5:15 PM, Janos Sallai < >>>> [email protected]> >>>> > wrote: >>>> >> >>>> >> Charles: >>>> >> >>>> >> As I wrote in my previous mail, to make sure that the RF230 radio is >>>> >> turned off after bootup, just add "components ActiveMessageC;" to any >>>> of >>>> >> your configuration files. You don't need to wire anything. On bootup, >>>> the >>>> >> RF230 stack will automatically take the radio to deep sleep. Of >>>> course, if >>>> >> your app starts using the radio, it will turn on... >>>> >> >>>> >> In your code (TestSchedulerC.nc), you _explicitly_ start the radio: >>>> >> >>>> >> 129: if (call RadioControl.start() != SUCCESS) >>>> >> 130: call Leds.led0Toggle(); >>>> >> >>>> >> That's why the mote is drawing 3mA. >>>> >> >>>> >> As a sidenote, if you want to use low power listening (disabled by >>>> default >>>> >> on all platforms), you have to add -DLOW_POWER_LISTENING to PFLAGS in >>>> your >>>> >> makefile. >>>> >> >>>> >> Janos >>>> >> >>>> >> >>>> >> On Fri, Jan 23, 2009 at 3:57 PM, Charles Elliott >>>> >> <[email protected]> wrote: >>>> >>> >>>> >>> Thanks for the ideas but we are still seeing ~3mA when running the >>>> >>> application. >>>> >>> I've attached the source and makefile to this email. >>>> >>> Thanks >>>> >>> Charles >>>> >>> >>>> >>> On Wed, Jan 21, 2009 at 3:38 PM, Janos Sallai >>>> >>> <[email protected]> wrote: >>>> >>>> >>>> >>>> Charles, >>>> >>>> >>>> >>>> Just add "components ActiveMessageC;" to any of your configuration >>>> >>>> files. You don't need to wire anything. On bootup, the RF230 stack >>>> will >>>> >>>> automatically take the radio to deep sleep. Of course, if your app >>>> starts >>>> >>>> using the radio, it will turn on... >>>> >>>> >>>> >>>> Janos >>>> >>>> >>>> >>>> On Wed, Jan 21, 2009 at 2:13 PM, Charles Elliott >>>> >>>> <[email protected]> wrote: >>>> >>>>> >>>> >>>>> Thanks for the quick reply Miklos. >>>> >>>>> Using the program from \tinyos-2.x\apps\tests\rf230\RF230Test as a >>>> >>>>> guide we added in RF230LayerC and RF230ActiveMessageC to the >>>> wiring file. >>>> >>>>> To TestSchedulerC we added RadioState.turnOff() command and all of >>>> the other >>>> >>>>> required wiring and include statements. >>>> >>>>> After making these changes the motes drew 1mA less than before. >>>> >>>>> What are we missing? >>>> >>>>> Thanks >>>> >>>>> Charles >>>> >>>>> On Tue, Jan 20, 2009 at 12:17 PM, Miklos Maroti >>>> >>>>> <[email protected]> wrote: >>>> >>>>>> >>>> >>>>>> I think you need to include the RF230LayerC component to have to >>>> radio >>>> >>>>>> chip initialized and to move it into low power state. Miklos >>>> >>>>>> >>>> >>>>>> On Tue, Jan 20, 2009 at 11:11 AM, Charles Elliott >>>> >>>>>> <[email protected]> wrote: >>>> >>>>>> > Any help for the following question: >>>> >>>>>> > >>>> >>>>>> > "I have a question about the minimum power consumption in Iris >>>> >>>>>> > module and >>>> >>>>>> > telosb module when both of them are in sleep state and all of >>>> their >>>> >>>>>> > external >>>> >>>>>> > devices are inactive. According to my measurement, the current >>>> >>>>>> > consumed is >>>> >>>>>> > only 7uA by telosb, but is 5mA by Iirs, which is quite high and >>>> is >>>> >>>>>> > contradict with the specification given by Crossbow. >>>> >>>>>> > >>>> >>>>>> > >>>> >>>>>> > >>>> >>>>>> > I did experiments on these two kinds of motes using the program >>>> >>>>>> > TestSchedulerC. It is a program under the tinyos2-x/apps/tests >>>> >>>>>> > directory. In >>>> >>>>>> > the program, after the mote is booted, it posts three tasks to >>>> >>>>>> > toggle the >>>> >>>>>> > three led in the mote. According to the component wiring >>>> >>>>>> > relationship, when >>>> >>>>>> > the task queue is empty, the scheduler will finally invoke >>>> mcuSleepC >>>> >>>>>> > module >>>> >>>>>> > to get the microcontroller into low power state. I installed >>>> the >>>> >>>>>> > program on >>>> >>>>>> > both Iris and telosb, and used a multi-meter to measure the >>>> >>>>>> > electricity >>>> >>>>>> > current. >>>> >>>>>> > >>>> >>>>>> > >>>> >>>>>> > >>>> >>>>>> > Can anyone give me some suggestions? Any help will be greatly >>>> >>>>>> > appreciated! >>>> >>>>>> > >>>> >>>>>> > >>>> >>>>>> > >>>> >>>>>> > Jinfu Zheng" >>>> >>>>>> > >>>> >>>>>> > We are using the current tinyos source tree from the CVS >>>> >>>>>> > >>>> >>>>>> > Thanks >>>> >>>>>> > Charles >>>> >>>>>> > >>>> >>>>>> > _______________________________________________ >>>> >>>>>> > Tinyos-help mailing list >>>> >>>>>> > [email protected] >>>> >>>>>> > >>>> >>>>>> > >>>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >>>> >>>>>> > >>>> >>>>> >>>> >>>>> >>>> >>>>> _______________________________________________ >>>> >>>>> Tinyos-help mailing list >>>> >>>>> [email protected] >>>> >>>>> >>>> >>>>> >>>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >>>> >>>> >>>> >>> >>>> >> >>>> > >>>> > >>>> >>> >>> >> >
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