On Tuesday 26 June 2007 04:40:30 am sara Khad wrote: > Hi, > I am wondering if anyone can tell the difference between BaseStartion > and BaseStaionCC2420???
These comments only apply to the cc2420 radio. The regular base station code will work with other radios, which may act differently than described here. The cc2420 radio, by default, is configured so that it only sends "up" to the radio software those received packets that either match the mote's address or the network's broadcast address. The BaseStationCC2420 code includes a custom CC2420ControlP.nc which turns off this functionality. Otherwise, if you compare the contents of the two base station directories (tos2.0.1), they are functionally equivalent. Both apps provide effectively equivalent mechanisms to ensure that the cc2420 does not send acknowledgements. > When I run baseStationCC2420, it receives all the packets within the > radio even if the message does not suppose to go to the baseStation? > what is going on? I do no understand what is the purpose of that? It depends upon the application. Perhaps the base station acts as a packet forwarder. Perhaps it acts as a packet capture tool for diagnostics. Perhaps a network's routing layer uses 'snooped' packets to update its neigbor table. >From an energy standpoint, if you only want the base station to see packets addressed to it, it's better to let the cc2420 do address decoding as done in the standard base station. _______________________________________________ Tinyos-help mailing list [email protected] https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
