Gwendal Grignou 828b55a735 common: Add magnetometer online calibration.
Code for hard iron calibration: Every seconds (or faster if enough
samples), find a sphere that fit the compass data.

Based on Android code.

BRANCH=smaug
BUG=chrome-os-partner:39900
TEST=Check hard-iron bias is removed. Works better outside.

Change-Id: Iab479d5113b6560b4f01b0fd87373d2eecdb9b54
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/299583
Reviewed-by: Anton Staaf <robotboy@chromium.org>
2015-10-13 05:28:54 -07:00
2015-05-07 00:00:47 +00:00
2015-08-15 01:32:39 +00:00
2012-05-11 09:11:52 -07:00
2014-04-02 19:58:53 +00:00
2014-05-15 05:20:14 +00:00

For an overview of the Embedded Controller firmware, refer to

http://www.chromium.org/chromium-os/2014-firmware-summit
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