you should not read localtime directly in sendDone() or receive() events. instead, use the PacketTimeStamp interface to access the timestamp directly. see apps/tests/TestFTSP for an example how to wire the interface.
the frequency of sync msgs is controlled by TIMESYNC_RATE environmental variable. it is already set to 3 seconds in the test application, which should synchronize all nodes after 9 seconds... brano On 11/05/10 5:02 PM, "AKHILA S RAO" <akhila...@ece.iisc.ernet.in> wrote: > Okay.. this means wat i am doing is rite.. > I am sending pkts from a node every 100 ms and collecting it at the > basestation. I am accessing the localtime and converting it to global and > this value is sent in the packet. this is done at both sender and > receiver. > > So if the nodes are in sync then i should be able to use the difference in > the time values of sender and receiver for some calculation... > > However, there seems to be some problem and the nodes are not > synchronised...Do u know how frequently the sync msgs are exchanged and > where it can be modified??? > > > >> no, you don't need to start ftsp explicitly. you do, however, need to wire >> the proper SoftwareInit and Boot interfaces in the main application file. >> you can find an example in apps/tests/TestFtsp/Ftsp/TestFtspAppC.nc >> >> brano >> >> >> On 11/05/10 2:04 PM, "Deeksha Rao Sahib" <eced...@ece.iisc.ernet.in> >> wrote: >> >>> Hi, >>> >>> I had a similar question... I have already included the directory and >>> also >>> the TimeSyncC component. Does this ensure that ftsp is running in the >>> background of my application code? I do not have to explicitly begin or >>> activate ftsp rite?? >>> >>>> Hi Wafa, >>>> >>>> You should use the ftsp library from the tos/lib/ftsp directory of the >>>> tinyos-2.x tree. Look at the TestFTSP application to see how to use >>>> it. >>>> >>>> Best, >>>> Miklos >>>> >>>> On Mon, May 10, 2010 at 7:18 PM, wafa jaballah >>>> <wafa.jabal...@gmail.com> >>>> wrote: >>>>> Hi all, >>>>> >>>>> My application needs synchronised nodes in order to have correct >>>>> results. >>>>> To do this, I have to synchronise nodes with a Time Synchronization >>>>> Protocol >>>>> like FTSP. >>>>> How can I integrate FTSP in my application or on any application in >>>>> WSN.? Is >>>>> there a general method to do it? >>>>> >>>>> Best Regards, >>>>> >>>>> -- >>>>> Wafa Ben Jaballah >>>>> >>>>> >>>> _______________________________________________ >>>> Tinyos-help mailing list >>>> Tinyos-help@millennium.berkeley.edu >>>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >>>> >>>> -- >>>> This message has been scanned for viruses and >>>> dangerous content by MailScanner, and is >>>> believed to be clean. >>>> >>> >>> >>> --Deeksha >> >> >> _______________________________________________ >> Tinyos-help mailing list >> Tinyos-help@millennium.berkeley.edu >> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help >> >> -- >> This message has been scanned for viruses and >> dangerous content by MailScanner, and is >> believed to be clean. >> > _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
