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OpenCellular/include
David Schneider 3d4bb5f649 gru: control LEDs by changing frequency
gru has circuitrythat selects the charge LED color based on the
frequency of the PWM.
By adjusting the PWM frequency instead of just the duty, we gain more
control over the brightness of the charge LED.

BUG=chrome-os-partner:54155
BRANCH=gru
TEST=activate each LED in turn and confirm color and brightness

Change-Id: Ie653125a528595c1ec68aea4d02cb70595a1b151
Signed-off-by: David Schneider <dnschneid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/415517
Reviewed-by: Shawn N <shawnn@chromium.org>
2016-12-05 16:43:18 -08:00
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