OK I found TEP 111 http://www.tinyos.net/tinyos-2.x/doc/html/tep111.html
which does a nice job of explaining why we "need" so many levels
of data obfuscation, but doesn't actually show what the final
structs are and what's the difference. I presume the 2420 headers
must be identical because they are part of 802.11.14 (I think...).
It's hard to imagine that the low level radio code would need (much)
massaging in order to make T1&2 compatible for a one-off system.

Since I'm not now nor ever have been a T2'er, could someone post
or point to the two structs for me?

thanks
MS

Eric Decker wrote:
> 
> 
> 2008/9/7 Renee Azhen <[EMAIL PROTECTED] 
> <mailto:[EMAIL PROTECTED]>>
> 
>     yep, Eric, I want to communicate by radio.
>     In T2, the message format_t is named msaage_t, and in T1, it is
>     named TOS_msg, and it is almost different.  So each nodes in
>     different T# can't analyze other type radio message as expected.
> 
> 
> Not sure what you mean by "almost different".  Slightly different?
> 
>      
>     Can we revise the code in the mac-lay  of T2 to receive and analysze
>     radio message send by T1 node?
> 
> 
> It is possible.   It would have to be done at a fairly low level in the 
> stack.  My gut feeling is you'd be biting
> off a lot.  Asking for lots of problems.
> 
> What problem are you trying to solve?  In other words what are you 
> trying to do with the node that
> is communicating using the T1 stack?
>  
> 
>     Can we move on by some other method to resolve this problem, then
>     let them communicate between different platform. Or definitely no way?
> 
> 
> A different approach would be to build a T1-T2 gateway.  A node that has 
> two radios or possibly one radio
> attached to two stacks.  But this too seems like more trouble then it is 
> worth.
>  
> 
>      
>     thanks
>     zhijian
>     */Eric Decker <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>/* 写道:
> 
>         Communicate in what way?  Using the radio?
> 
>         It is my understanding that there is a small difference between
>         the packet format in
>         T2 vs. T1.  I would recommend looking at message_t for the
>         communications medium
>         used for T2.  I don't remember what the packet structure is
>         called in T1 but that is
>         what you want to compare against.
> 
>         That is where I would start.
> 
>         eric
> 
> 
>         2008/9/6 Renee Azhen <[EMAIL PROTECTED]
>         <mailto:[EMAIL PROTECTED]>>
> 
>             hi, all,
>             Most of my nodes are programed with tinyos 2.0, but there is
>             a message sender is programed with tinyos 1.x.
>              
>             It is possble to let the nodes with tinyos 2.0 receive the
>             msg sent by tinyos 1.x??
>             thanks
>             zhijian
>             
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> 
>         -- 
>         Eric B. Decker
>         Senior (over 50 :-) Researcher
>         Autonomous Systems Lab
>         Jack Baskin School of Engineering
>         UCSC
> 
> 
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> 
> 
> 
> -- 
> Eric B. Decker
> Senior (over 50 :-) Researcher
> Autonomous Systems Lab
> Jack Baskin School of Engineering
> UCSC
> 
> 
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