I plan to simulate a fairly large number of nodes monitoring an environment
(ideally over 1,000).  During simulation, I would like to be able to change
environmental conditions (e.g., temperature, humidity).

My first thought was to create some simulation-only sensor components
implementing the Read interface.  Ideally, these components could pull or
request environment changes from another application and then apply some
"sensor noise" before providing the readings to the rest of the mote
application.

>From what I could tell, TOSSIM only supports reading of variables -- not
writing.  Therefore, I can't simply just tuck away some "private" variables
in the simulated sensor component.  I'd rather not inject/disseminate
environmental changes over the network, as I was hoping for a more efficient
and transparent solution.

Are there any existing means of doing this? If not, any advice on where to
get started in extending TOSSIM to achieve this?

Thank you,
Jon
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