1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ANDROID_SENSORS_H
18#define ANDROID_SENSORS_H
19
20#include <stdint.h>
21#include <errno.h>
22#include <sys/cdefs.h>
23#include <sys/types.h>
24
25#include <linux/input.h>
26
27#include <hardware/hardware.h>
28#include <hardware/sensors.h>
29
30__BEGIN_DECLS
31
32/*****************************************************************************/
33
34#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
35
36#define ID_A  (0)
37#define ID_M  (1)
38#define ID_O  (2)
39
40/*****************************************************************************/
41
42/*
43 * The SENSORS Module
44 */
45
46/*****************************************************************************/
47
48/* For ADXL346 */
49#define EVENT_TYPE_ACCEL_X          ABS_X
50#define EVENT_TYPE_ACCEL_Y          ABS_Y
51#define EVENT_TYPE_ACCEL_Z          ABS_Z
52#define EVENT_TYPE_ACCEL_STATUS     ABS_THROTTLE
53
54/* For AK8975 */
55#define EVENT_TYPE_MAGV_X           ABS_RX
56#define EVENT_TYPE_MAGV_Y           ABS_RY
57#define EVENT_TYPE_MAGV_Z           ABS_RZ
58#define EVENT_TYPE_MAGV_STATUS      ABS_RUDDER
59
60/* Fro AKM Algorithm */
61#define EVENT_TYPE_YAW              ABS_HAT0X
62#define EVENT_TYPE_PITCH            ABS_HAT0Y
63#define EVENT_TYPE_ROLL             ABS_HAT1X
64#define EVENT_TYPE_ORIENT_STATUS    ABS_HAT1Y
65
66
67/* conversion of acceleration data to SI units (m/s^2) */
68/* 720 LSB = 1G */
69#define LSG                         (256.0f)
70#define AKSC_LSG					(720.0f)
71#define CONVERT_A                   (GRAVITY_EARTH / LSG)
72
73/* conversion of magnetic data to uT units */
74#define CONVERT_M                   (0.06f)
75
76/* conversion of orientation data to degree units */
77#define CONVERT_O                   (0.015625f)
78
79#define SENSOR_STATE_MASK           (0x7FFF)
80
81/*****************************************************************************/
82
83__END_DECLS
84
85#endif  // ANDROID_SENSORS_H
86