Well, I wanted to set my RF power, based on my received signal strength, so I would save a little of energy. But I am really confused on how to do so.
First of all, I do not know the unit of some things. For example, how do I interpret the strength_or_preamble field of a incoming packet? I realized, after some experiments, that its value would go lower as I get closer to the base station. Does it have a measurement unit? Secondly, what is the unit of the value passed as parameter to setRFPower? (from CC1000Control) Here are some formulas I found: "VRSSI = Vbatt × ADC _ Counts 1024 RSSI (dBm ) = -51.3 × VRSSI - 49.2 for 433 and 315 MHz Motes RSSI ( dBm) = -50.0 × VRSSI - 45.5 for 915 MHz Motes" (These formulas are for mica2) Anyone could help me on converting my received signal strength into a number that can be used as parameter for the command setRFPower? I am currently using mica2 nodes, 915MHz. Thanks in advance, Fernando. _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
