Alex Tereschenko 8af6843566 PWM: added workaround for Edison's problem with 0% duty ...

As described in issue #91, on Edison setting 0% duty doesn't
disable the PWM on a pin completely.

Therefore we add a couple of Edison-specific _pre functions
and an internal PWM state variable, which we use to toggle PWM
enabled/disabled based on what duty is set for the pin.

Closes #91.

Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

2016-06-16 14:12:33 +01:00

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