[Tinyos-help] How to use TimeStamp in tinyOS-1.x or TinyOS-2.x?

[Bernardo Avila Pires]

Synchronizing the nodes might be hard... Couldn't you use hop count and
estimate the average delay as a function of distance? With hop count +
average delay, you can estimate the total delay...
A workaround for this is to have the motes start a oneShot time with
interval of 0xFFFFFFFF ms, then try to turn the motes on at the same time;
But you have to check how desynchronized the nodes get.

2007/11/30, antonio gonga <ask25019fe at hotmail.com>:
>
>
> Hey all,
>
> I'd like to use timeStamp while sending a message.
> The Sender insert the time on which the message was sent, and the Base
> Station also inserts the time when the message is received. On the
> application layer (java Application, the system converts and subtracts these
> values, so that a delay can be calculated.
> Using this strategy it's possible to calculate the delay between two
> sensor. It's important because I want to use it to send messages over 1Km(
> i.e Wide area Wireless Sensor Network) using intermediate node. If some
> data sensitive to delay has to be carried in the packets this could be the
> first step to evaluate the possibility  or impossibility to use WSN
>
> I think there should be a function that enables to insert packet
> timestamps like in RTP.
>
> thanks in advance
>
>
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