Hi all tinyos users, I am pretty sure that adding -DCC2420_DEF_RFPower=3 in the makefile doesn't really adjust the tx power to the minimum. Sending packet with such tx power should be (and only by this way) in the code as follows: call CC2420Packet.setPower(&msg, 3);
Best regards, Alfred Nooobel 2009/11/11, Alfred NOBEL <[email protected]>: > > Ok > Thank you very much. > > 2009/11/11 Paul Johnson <[email protected]> > > Alfred, >> >> It really depends on what your topology looks like. If the nodes, before >> the change, received messages with an RSS of -45 dBm, and you reduced the >> power level from +0dBm to -15dBm. The RSS would go from -45dBm to -60dBm. >> Depending on your hardware, this can still be within the "white" range of >> transmission where the link quality is excellent. >> >> For reference, with the MICA2 which uses the CC1000 radio, when the >> transmission power is set to "low" (approximately -20dBm), we were able to >> successfully receive packets on average at 38 ft, and in some cases up to 65 >> ft. >> >> -Paul >> >> Alfred NOBEL wrote: >> >> Hi all, >> I would like to adjust the Transmission power of all sent packets. To do, >> I added this line in the makefile: CFLAGS += -DCC2420_DEF_RFPower=3 (low >> transmission power of CC2420 compatible platforms) >> >> However, I think that this command didn't work as expected because links >> connectivity stays excellent. >> >> -- >> Best regards, >> Alfred.Nooobel >> >> >> ------------------------------ >> >> _______________________________________________ >> Tinyos-help mailing >> [email protected]https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >> >> > > > -- > Best regards, > Alfred.Nooobel > > -- Best regards, Alfred.Nooobel
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