Dear Members, - Objective: in Moteiv(now Sentilla)'s Delta, try to change the period between listens from 2 seconds to 4 seconds - Source: recent Boomerang from TinyOS CVS (in tinyos-1.x/contrib/boomerang) - Patches applied: http://sing.stanford.edu/klueska/tos_wiki_files/NetSyncM.nc - Configuration changes: added "NETSYNC_PERIOD_LOG2=17" to Makefile - Symptoms: . On each run, some nodes keep sending data with no loss, but some nodes only get a little bit of data in sporadically. . If I change the code(in CC2420SyncSaneP.nc) so that an LED is turned on while the RF chip is turned on, you can see that the nodes that fail to send in data are exactly 2 seconds out of sync with the sink node(a.k.a base station). Sync is perfectly fine when NETSYNC_PERIOD_LOG2=16 (the default that gives a 2 second period): actually tested with 25-node configuration that forces multi-hop. 4-second period doesn't work even when everything is single-hop.
Thank you very much for your valuable time. Timothy
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