Hi Lance,

I'm not sure what your question is. What kind of mesh networking 
protocol are you using? Some protocols are described in the tutorials:
http://docs.tinyos.net/index.php/TinyOS_Tutorials#Network_Protocols

You seem to use (or want to use) something similar to the Collection 
protocol:
http://docs.tinyos.net/index.php/Network_Protocols#Collection

To count the hops, you could add a hop count variable in your message 
and initialize it to 0 on the sending node. Then you intercept messages 
(with the Intercept interface) and increment this counter before 
forwarding the message.

Do you have a working data collection program? If so, all you need to do 
is to add the functionality to count the number of hops of messages.

Cheers,
Urs


On 10/17/10 7:34 AM, (¯`•._.•Lance•._.•´¯) wrote:
> hi all,
>           I am currently working on a wsn ( Micaz)  project.I encountered
> some issues .The issue is that i want to forward message( hop count that i
> received from the target in the mesh network ) back to the base station but
> in between there will be some relay nodes. . Is there anyone can  advice me
> what should i do in order to solve this problem. Some programming guide as
> well .
>
> Thanks for your time  and appriciate it.
>
> Regards,
> lance
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