[Tinyos Core WG] atmega128 timer

Philip Levis pal at cs.stanford.edu
Thu Mar 29 15:23:23 PDT 2007


On Mar 29, 2007, at 3:00 PM, David Gay wrote:

> Ok, I've now checked in a fully(?) working version of the new
> atmega128 timer subsystem, along with some small changes to the HPL
> layer.
>
> For the curious: the code is in tos/chips/atm128/timer/ 
> Atm128AlarmAsync[CP].nc.
>
> David Moss, can you test to see if this version works for you? Thanks!

Awesome.

As an aside, as part of my role in net2 I've ported MultihopLQI to  
TinyOS 2.x. The implementation is still a bit rough (it is not 119  
compliant as it does not maintain per-client state), but that's all  
at the upper layers and should be simple to fix up.

The protocol assumes you have a CC2420, of course.

As part of my role in sim, I'm incorporating improved wireless noise  
simulation into TOSSIM. Using an app that's in contrib, you can  
generate 1KHz noise traces of an environment then recreate similar  
noise behavior in simulation. This makes it so packet loss is no  
longer independent: you see bursts of losses, just like the real  
world. The next step will be incorporating long-term RSSI variations  
to simulate link oscillations.

Phil



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