Hi Miklos,

I'm just wondering if you could help me please.

I've tried to implement a similar scenario to the TestFtsp application where 
three TestFtsp motes should send to the base station the local rather than the 
global reception timestamps of messages broadcast by a dedicated beacon mote 
programmed with RadioCountToLeds at periodic intervals (say each 1, 2 and 4 
seconds). I found that the measured intervals (the difference between tni and 
tni+1 where tni and tni+1 represent, for example, local reception timestamps of 
beacon 'i' and beacon 'i+1' according to the local time of mote n) are almost 
the same for the three TestFtsp motes for the same beacons (i.e. raw data of 
the attached table). However, by comparing the measured intervals of the same 
TestFtsp mote (i.e. column data of the attached table) I'll get noticeable 
differences.

In fact, I was expecting the opposite. Could you let me know whether what I got 
is wrong or not? and what is the reason for such results?

BTW, I'm using tinyos 2.x and micaz platform and I'm not going here to test 
whether the TestFtsp motes are synchronized or not.

Thanks in advance for any help.

Omar


Attachment: Result.docx
Description: Result.docx

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