On Thu, Jul 31, 2008 at 4:05 AM, De-MonHell <[EMAIL PROTECTED]> wrote: > > hi all. > > THE EXAMPLE: > i have 4 motes: 0,1,3,4 (these are their TOS_NODE_ID) > Inside them i have basically the same application that use a single collection > with AREA_ID as colllection id BUT: > node 0 and 1 have a enum inside them like this: > AREA_ID=0 > node 3 and 4 have > AREA_ID=1 > > (for every node: i change the AREA_ID, i recompile and finally i deploy) > > Node 0 and 2 will act as root of the collection service.
node 2? You have five motes? > Node 1 and 3 will measure the ambient temperature and send it the the leader > of their respective area (using the collection sender) > so node 1 will send its data to node 0 and > node 4 to node 3 I think there is a typo here - is node 3 your root? > > This is (my) exptected behavior. > > THE PROBLEM: > but this case sometimes work and sometimes not. both "temperature" nodes sent > their data (connecting them to the pc i can see their printf ) > node 0 and 2 indeed, sometimes both thei receive the data, sometimes only one > of the two. > > INFO > i'm using the tinyos 2 from CVS > 4 tmotesky motes > i attach the files of the application > > ANSWER?! > am i missing something about the collection protocol? > what can i check to understand what is failing? > why sometimes work and sometimes not? The argument you pass to CollectionSenderC during its instantiation is protocol id, the dispatch id of the protocol or application running on top of CTP. So, you are not forming two separate/disjoint trees. If you want two disjoint trees, you should run one instance of CTP in one part of the network and another instance of CTP in another part of the network. To do this, you can run CTP on two different AM types. Otherwise, you will have multiple roots in the same network and the packets will go to any or all of the roots depending on the dynamics or topology. - om_p _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
