[Tinyos-host-mote-wg] [Tinyos-2.0wg] RandomC vs RandomLfsrC

[Philip Levis]

I'm updating cc2420/CSMARadioC.nc and cc1000/CSMARadioC.nc to use  
RandomC rather than RandomLfsrC. Using RandomLfsrC is clearly  
problematic, as it introduces an unnecessary dependency (naming my  
implementation rather than service). If it looks like the radio  
stacks need the cheaper random number generator (Barbara reports that  
the CC1000 definitely doesn't), then we should incorporate this idea  
into the Random interface, rather than binding implementations (e.g,  
have a "random16Fast" command for a cheap but sub-optimal rgen).

I'll test that the CC1000 stack continues to work with this change  
(and dgay's updates). Can't test the CC2420. For initial testing  
purposes on the CC2420, I'd recommend using an app-specific component  
override for RandomC to wire to RandomLfsrC.

Phil

-------

"We shall not cease from exploration
And the end of all our exploring
Will be to arrive where we started
And know the place for the first time."

- T. S. Eliot,  'Little Gidding'

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