Hi Carlos, As far as I know, on the IRIS the microcontroller has a dedicated crystal and cannot be run from the CLKM source of the AT86RF230, in fact the CLKM pin is not connected at all. You need to design your platform specifically for that (and for that platform it makes sense to set the TRX_CTRL_0_VALUE).
Miklos On Tue, Mar 10, 2009 at 5:04 PM, 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 > _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
