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authorGwendal Grignou <gwendal@chromium.org>2019-01-28 23:13:53 -0800
committerJustin TerAvest <teravest@chromium.org>2019-02-07 21:44:21 +0000
commitb2ec2a5eb56f9f6bb769ed0200fe11bcc075167d (patch)
treeaf25ca8237d5c0a86134187c2894246c2937fb27 /common/mag_cal.c
parentef77e161fde5263165946c98dfe9e3c9f4e7e13b (diff)
downloadchrome-ec-b2ec2a5eb56f9f6bb769ed0200fe11bcc075167d.tar.gz
common: mag_cal: Add comment in mag_cal
Make it clear the magnetometer calibration code needs input is a specific range. 16LSB/uT. BUG=none TEST=compile BRANCH=none Change-Id: I8dd17e528838ca6b43b93c4649637168a02f4248 Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/c/1444093 Tested-by: Justin TerAvest <teravest@chromium.org> Reviewed-by: Jett Rink <jettrink@chromium.org> Reviewed-by: Karthikeyan Ramasubramanian <kramasub@chromium.org>
Diffstat (limited to 'common/mag_cal.c')
-rw-r--r--common/mag_cal.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/common/mag_cal.c b/common/mag_cal.c
index 1e71059921..db09050007 100644
--- a/common/mag_cal.c
+++ b/common/mag_cal.c
@@ -13,7 +13,7 @@
#include "math_util.h"
#include "util.h"
-/* Data from sensor is in 16th of uT */
+/* Data from sensor is in 16th of uT, 0.0625 uT/LSB */
#define MAG_CAL_RAW_UT 16
#define MAX_EIGEN_RATIO FLOAT_TO_FP(25.0f)