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8d343c1548
Implement the standard LED control scheme for gru, using a single PWM to set the battery status LED color rather than the traditional GPIOs. BUG=chrome-os-partner:54379 BRANCH=None TEST=Manual on gru. Verify LED is green when charging w/ nearly full battery, off when discharging w/ nearly full battery, amber when charging otherwise. Also verify LED control host commands work as expected: ectool led battery green=1 // green ectool led battery amber=1 // amber ectool led battery red=1 // red ectool led battery red=0 // off Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org> Change-Id: I184e72c552e6d2196aef2724af9292806e0ea8c0 Reviewed-on: https://chromium-review.googlesource.com/352520 Commit-Ready: Shawn N <shawnn@chromium.org> Tested-by: Shawn N <shawnn@chromium.org> Reviewed-by: David Schneider <dnschneid@chromium.org> Reviewed-by: Mary Ruthven <mruthven@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