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