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Debouncing per-pin means we don't lose transitions, which makes
counting a lot more precise.
Signed-off-by: Keith Packard <keithp@keithp.com>
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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>
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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>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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With this, a single task can wait for any button or quadrature input
device.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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Mostly works now, should work reliably with a bit of input filtering.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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