Hey, Though i don not know about the solution to your problem, i think you could help me out with FTSP.
I am trying to run FTSP on telosb motes and i use tinyos-2.1.1. From my observation, if 3 nodes are running TestFtsp code say node 1(reference) node 2, 3 , 4 etc. nodes 2, 3 and 4 are in sync and their global times match with each other but the values are nowhere close to that of the node 1 which is supposed to be the reference. How can i now relate the times of nodes 2 and 3 with node 1?? And this seems to be the problem with whoever the reference is(node with smallest id). Like if i remove node 1 and let nodes 2, 3 and 4 carry on, then node 2 becomes the reference whose value is again different from that of 3 and 4. Any idea?? > Hello all, it's first time here. > > I am playing with the TestFtsp application on TinyOS 2.1.1 using MicaZ and > the > 32KHz timer precision, having an average error of around 100 microseconds > in my > experiments (3-4 clock ticks). > > I have learned that FTSP can have precision in the microsecond range, so I > searched the mailing list archives about having that precision in MicaZ > platform. They seems contradictory. Here are some of the results: > > not possible (in TMote) > https://www.millennium.berkeley.edu/pipermail/tinyos-help/2010-January/044090.html > > only 32KHz precision is possible (no HIL component providing T32khz) > http://mail.millennium.berkeley.edu/pipermail/tinyos-help/2009-February/038482.html > > possible with 1.21 microsecond average error after bug fix: > http://mail.millennium.berkeley.edu/pipermail/tinyos-devel/2008-August/003364.html > > ported microsecond FTSP in MicaZ (possible) > http://mail.millennium.berkeley.edu/pipermail/tinyos-help/2008-March/031906.html > > Can I confirm if it is really possible or not to have microsecond > precision of > FTSP in MicaZ? If it's possible, can you help me with the steps on how to > change the TestFtsp application in order to support it? It looks like the > supported is only the TMilli and T32KHz precision. > > Any help would be appreciated. Thank You! > > - RB > > > > _______________________________________________ > Tinyos-help mailing list > [email protected] > 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 -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
