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Robo devices have a power button LED. For these devices the desried power button LED behavior is: S0 -> always on S3 -> charging, then 500 mSec off, 3 seconds on S3 -> not charging, always off S5 -> always off Because the hook tick runs at 200 msec, using 600 msec for the off period when blinking in S3. BUG=b:64015212 BRANCH=None TEST=Manual This LED is not connected on EVT, so added a wire on GPIO02 and used a scope. Verifed that in S0 the signal level is low, and in S3 that it control signal toggles 600 mSec high/3 sec low. Verifed than in S5 control signal is high. Change-Id: I72438a009a507fcddaae5a673bf3bc83988f2dd5 Signed-off-by: Scott Collyer <scollyer@google.com> Reviewed-on: https://chromium-review.googlesource.com/717183 Commit-Ready: Scott Collyer <scollyer@chromium.org> Tested-by: Scott Collyer <scollyer@chromium.org> Reviewed-by: Patrick Georgi <pgeorgi@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly