Ok, thank you very much. I'm going to try reception with AVR off.
Regards, Carlos 2009/3/10 Janos Sallai <[email protected]> > The external clock input pin of the MCU is XTAL1, however the iris has > an external crystal hooked up there... This means that the clock > output of the transceiver is not connected to the MCU. > > Regarding power saving: The MCU will go to sleep if there the task > queue is empty and no peripherals that require the MCU to be on are > used. Typically, this is the case when the mote is idle and the > transceiver is receiving. > > Note that the MCU is woken up at least four times per second (when the > 1024Hz 8-bit timer overflows). > > Janos > > On Tue, Mar 10, 2009 at 11:04 AM, Carlos Gil Soriano > <[email protected]> wrote: > > Hi, > > > > > > we have received a small quantity of IRIS motes and then we have started > to > > work with them. > > > > As the ATMEL AT86RF230 datasheet says, it is possible to set the CLKM of > the > > radio up as the clock of the microcontroller. In that case, if the radio > is > > in a reception state and the microcontroller is not running an > application > > is possible to power down the microcontroller but keep on the reception > > state. If a new frame is received, the radio is able to wake up the > > microcontroller. So, a power saving strategy could be implemented. > > > > In order to achive that, it is necessary to program CLKM with a correct > > frecuency (such as 4MHz or 8MHz for IRIS mote). But looking up into the > code > > (HplRF230.h), I have found that TRX_CTRL_0_VALUE is set to 0 instead of > 0x03 > > or 0x04, for instance. With this configuration it is not possible to turn > > off the microcontroller from the radio. > > > > Is it possible to configure that kind of operation? > > > > I also have tried to find out the schematics of IRIS so as to know if > both > > radio and microcontroller share CLKM, but I've found nothing. > > > > Is there any schematic of IRIS platform? > > > > > > Regards, > > Carlos > > > > _______________________________________________ > > Tinyos-help mailing list > > [email protected] > > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > > >
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