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| author | Gwendal Grignou <gwendal@chromium.org> | 2015-09-11 12:02:26 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2015-10-13 05:28:54 -0700 |
| commit | 828b55a7358ad5ec8bc27552bfb280eb173dd453 (patch) | |
| tree | b9430d2bf624ee2b6976eed211696b50ae56decb /include/math_util.h | |
| parent | 0647f66f81de880af603a7fb70f57159519782ac (diff) | |
| download | chrome-ec-828b55a7358ad5ec8bc27552bfb280eb173dd453.tar.gz | |
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>
Diffstat (limited to 'include/math_util.h')
| -rw-r--r-- | include/math_util.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/math_util.h b/include/math_util.h index 0dd11c230b..385c044c6f 100644 --- a/include/math_util.h +++ b/include/math_util.h @@ -99,9 +99,9 @@ typedef fp_t matrix_3x3_t[3][3]; /* Integer vector */ typedef int vector_3_t[3]; -/* For vector_3_t, define which coordinates are in which location. */ +/* For vectors, define which coordinates are in which location. */ enum { - X, Y, Z + X, Y, Z, W }; /* * Return absolute value of x. Note that as a macro expansion, this may have |