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altos/telegps: Keep ring of recent GPS positions to detect motion quickly
author
Keith Packard
<keithp@keithp.com>
Fri, 13 Jun 2014 04:54:13 +0000
(21:54 -0700)
committer
Keith Packard
<keithp@keithp.com>
Fri, 13 Jun 2014 04:54:13 +0000
(21:54 -0700)
Instead of comparing only against the last logged value, keep a ring
and start logging as soon as we move away from the furthest one in the ring.
Signed-off-by: Keith Packard <keithp@keithp.com>
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