Hi In order to use lpl with ctp you could modify the ctpforwarding engine and add the lpl information for transmission. I added an interface where you can tell the ctp layer to use a default rx sleep interval for forwarded packets.
roman Ravi Prasad wrote: > Dear Philip, > > Thank you for your reply. > > As you said that CC2420 LPL in Tinyos2.x works with > arbitrary topologies, I tried to use LPL with > collection protocol provided in tinyos2.0.2. I used > the LowPowerListening interface in my top level > application to set the sleep interval of TX and Rx > sides. The application somehow worked with one > transmitter & one receiver. But the lowest current > consumption was 4mA which is very huge. Also the > initial tree formation time is very big. If I use a > sleep interval of more than 3seconds the tree dosent > even forms and nothing works. > > I think as the CollectionTree also uses ActiveMessage > to send/receive data/routing packets, the > sleepinterval setting should be controlled at a single > point from where all packets (i.e routing and data) > flow, that is the ActiveMessage component. > > Can you please comment on the above? > > Also it would be great if you have some suggestion to > use another multihop routing on top of CC2420LPL. > > > Regards > Ravi > --- Philip Levis <[EMAIL PROTECTED]> wrote: > >> Ravi Prasad wrote: >>> Hi all, >>> >>> My need - Low power multihop for CC2420 (with >>> Atmega128 mcu i.e micaz).. >>> >>> >>> Low power CC2420 is being asked so many times in >> this >>> list. I have been working on TinyOS1.x and in that >> low >>> power CC2420 was not really available. >>> >>> Now I have switched to TinyOS2.x and I know that >> there >>> is a LPL implementation of CC2420. But it seems >> that >>> is for a Star network topology & not used in any >>> multihop routing protocol. Am I right?? >>> >> The CC2420 LPL in 2.x works for arbitrary >> topologies. >> >> Phil >> > > > > > ____________________________________________________________________________________ > Choose the right car based on your needs. Check out Yahoo! Autos new Car > Finder tool. > http://autos.yahoo.com/carfinder/ > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help _______________________________________________ Tinyos-help mailing list [email protected] https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
