Hi guys, I have been working on FTSP on telosb platform. I have mail the forum a couple of times. Here are some result. Did any one face the problem? I did some search about the problem I got this
http://mail.millennium.berkeley.edu/pipermail/tinyos-help/2005-August/011661.html Here some results: I am using 5 Ftsp nodes, a node with RadioToCounts and a basestation [Java TS] [NodeID] [Seq num] [Global TS] [is_sync] 1280130120656 2 341 14171 0 1280130120663 3 341 14172 0 1280130120664 1 341 25768 0 1280130120678 5 341 14170 0 1280130120892 2 342 14232 0 1280130120900 1 342 25889 0 1280130120903 5 342 14231 0 1280130121141 2 343 14296 0 1280130121145 5 343 14300 0 1280130121509 1 344 26141 0 Here Node1 is the root and its always nearly twice the other nodes 1280230215107 1 56204 14005991 0 1280230215114 2 56204 6995968 0 1280230215120 4 56204 6995880 0 1280230215354 2 56205 6996094 0 1280230215362 4 56205 6996007 0 1280230215370 1 56205 14006244 0 1280230215604 5 56206 6996201 0 1280230215604 4 56206 6996133 0 1280230215842 1 56207 14006744 0 1280230215846 5 56207 6996326 0 1280230215858 4 56207 6996257 0 1280230216084 1 56208 14006993 0 1280230216092 5 56208 6996450 0 1280230216101 4 56208 6996382 0 1280230216332 2 56209 6996594 0 1280230216338 5 56209 6996574 0 1280230216345 1 56209 14007241 0 1280230216583 5 56210 6996702 0 1280230216593 1 56210 14007495 0 As time proceeds difference also grows, there were some abnomalities too: 1280231911 5 63152 7606328 1 1280231912 5 63153 7606453 1 1280231912 1 63153 15743240 0 1280231912 1 63154 15743484 0 1280231912 3 63154 7607412 1 1280231912 3 63155 7607540 1 1280231912 5 63155 7606703 1 1280231912 3 63156 7607666 1 1280231912 4 63156 7606829 1 1280231912 5 63156 7606829 1 1280231912 4 63157 7606953 1 1280231912 5 63157 7606953 1 1280231912 3 63157 7607790 1 1280231912 4 63158 7607076 1 1280231913 5 63159 7607200 1 1280231913 4 63160 7607326 1 1280231913 2 63160 7607326 1 1280231913 5 63161 7607455 1 1280231913 3 63161 7608291 1 1280231913 4 63161 7607455 1 They are in sync but its indicating its not in sync. The time sync error as determined by the matlab script also increases with time. I ran test for around 3hours and the error steady increase. How can we translate this difference (Global time between nodes) into time (s)? -- Regards, Puneeth NS
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