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https://github.com/Telecominfraproject/OpenCellular.git
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671613ec4a
Add math_util, as matrix and vectors are used in this file. BRANCH=none BUG=none TEST=compile when caller does not include math_util. Change-Id: Ic8f6ada4f24a0f9d3c91dbf14bea98546089a08f Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/373039 Reviewed-by: Randall Spangler <rspangler@chromium.org>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Header for motion_lid.h */
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#ifndef __CROS_EC_MOTION_LID_H
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#define __CROS_EC_MOTION_LID_H
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#include "host_command.h"
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#include "math_util.h"
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/**
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* This structure defines all of the data needed to specify the orientation
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* of the base and lid accelerometers in order to calculate the lid angle.
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*/
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struct accel_orientation {
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/* Rotation matrix to rotate positive 90 degrees around the hinge. */
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matrix_3x3_t rot_hinge_90;
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/*
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* Rotation matrix to rotate 180 degrees around the hinge. The value
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* here should be rot_hinge_90 ^ 2.
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*/
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matrix_3x3_t rot_hinge_180;
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/* Vector pointing along hinge axis. */
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vector_3_t hinge_axis;
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};
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/* Link global structure for orientation. This must be defined in board.c. */
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extern const struct accel_orientation acc_orient;
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/**
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* Get last calculated lid angle. Note, the lid angle calculated by the EC
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* is un-calibrated and is an approximate angle.
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*
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* @return lid angle in degrees in range [0, 360], or LID_ANGLE_UNRELIABLE
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* if the lid angle can't be determined.
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*/
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int motion_lid_get_angle(void);
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int host_cmd_motion_lid(struct host_cmd_handler_args *args);
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void motion_lid_calc(void);
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#endif /* __CROS_EC_MOTION_LID_H */
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