[Tinyos-devel] Re: [Tinyos Core WG] time sync interfaces

[David Gay]

On Dec 18, 2007 5:15 PM, John Griessen <john at ecosensory.com> wrote:
> To be a HIL, the app can't use specific timers, so it will be limited to
> using feedback to correct errors and may have lots of jitter.  It's not going to be
> smoothly nudging the time, since it is the same app for all different hdwe.

A misunderstanding here: a HIL timesync implementation doesn't have to
be portable, it just has to offer the same interface on all platforms.
Most HIL component implementations (e.g. storage, radio, timers) are
platform-specific. In a few cases (e.g. AMSenderC, AMReceiverC) a HIL
component is built on top of another HIL component (in this case
ActiveMessageC).

David