mjb/altos/src/stm/ao_fast_timer.c, branch fox1-v3-sn10AltOS - the operating system for Altus Metrum products
https://git.ethernal.org/mjb/altos/atom?h=fox1-v3-sn102014-05-09T07:05:39+00:00altos: Simplify quadrature tracking2014-05-09T07:05:39+00:00Keith Packardkeithp@keithp.com2014-05-09T07:05:39+00:00urn:sha1:8d9c79f5c162e07d57d42c6ba5825a3327a911d5
Set the timer to 200Hz for a 5ms debounce interval. Then, simply look
for transitions ending in both bits in the encoder being off, which
indicates the the encoder is resting in a detent. If bit '2' is
turning off, the encoder was rotated clockwise, otherwise the encoder
was rotated counter clockwise.
This is a lot more reliable, although still not perfect.
Signed-off-by: Keith Packard <keithp@keithp.com>
altos: Add fast-timer API. Use for quadrature and button drivers2013-06-10T05:09:13+00:00Keith Packardkeithp@keithp.com2013-06-10T05:09:13+00:00urn:sha1:988924b51980ad43e39bc4785a625ff25eb16449
This splits the fast-timer portion out of the debounce helper code and
shares that with the quadrature driver which now uses it directly.
Signed-off-by: Keith Packard <keithp@keithp.com>