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>
This unifies all the EC header files to use __CROS_EC_FILENAME_H
as the include guard. Well, except for test/ util/ and extra/
which use __TEST_ __UTIL_ and __EXTRA_ prefixes respectively.
BUG=chromium:496895
BRANCH=none
TEST=make buildall -j
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Change-Id: Iea71b3a08bdec94a11239de810a2b2e152b15029
Reviewed-on: https://chromium-review.googlesource.com/278121
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Add an arch include folder. Implement sqrtf for Cortex-M in math.h.
BUG=chrome-os-partner:7920
TEST=none
Change-Id: Ib7b480b6a0bf7760f014a1f73df54673a9016cb6
Signed-off-by: Vic Yang <victoryang@chromium.org>
