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 #define ID_L (3) 40 #define ID_P (4) 41 #define ID_GY (5) 42 43 /*****************************************************************************/ 44 45 /* 46 * The SENSORS Module 47 */ 48 49 /* the GP2A is a binary proximity sensor that triggers around 5 cm on 50 * this hardware */ 51 #define PROXIMITY_THRESHOLD_GP2A 5.0f 52 53 /*****************************************************************************/ 54 55 #define AKM_DEVICE_NAME "/dev/akm8973_aot" 56 57 #define EVENT_TYPE_ACCEL_X REL_Y 58 #define EVENT_TYPE_ACCEL_Y REL_X 59 #define EVENT_TYPE_ACCEL_Z REL_Z 60 61 #define EVENT_TYPE_YAW REL_RX 62 #define EVENT_TYPE_PITCH REL_RY 63 #define EVENT_TYPE_ROLL REL_RZ 64 #define EVENT_TYPE_ORIENT_STATUS REL_WHEEL 65 66 /* For AK8973iB */ 67 #define EVENT_TYPE_MAGV_X REL_DIAL 68 #define EVENT_TYPE_MAGV_Y REL_HWHEEL 69 #define EVENT_TYPE_MAGV_Z REL_MISC 70 71 #define EVENT_TYPE_PROXIMITY ABS_DISTANCE 72 #define EVENT_TYPE_LIGHT ABS_MISC 73 74 #define EVENT_TYPE_GYRO_X REL_RY 75 #define EVENT_TYPE_GYRO_Y REL_RX 76 #define EVENT_TYPE_GYRO_Z REL_RZ 77 78 79 // 64 LSB = 1G for KR3DM 80 #define LSB (64.0f) 81 #define NUMOFACCDATA (8.0f) 82 83 // conversion of acceleration data to SI units (m/s^2) 84 #define RANGE_A (2*GRAVITY_EARTH) 85 #define CONVERT_A (GRAVITY_EARTH / LSB / NUMOFACCDATA) 86 #define CONVERT_A_X (CONVERT_A) 87 #define CONVERT_A_Y (CONVERT_A) 88 #define CONVERT_A_Z (CONVERT_A) 89 90 // conversion of magnetic data to uT units 91 #define CONVERT_M (1.0f/16.0f) 92 #define CONVERT_M_X (-CONVERT_M) 93 #define CONVERT_M_Y (-CONVERT_M) 94 #define CONVERT_M_Z (-CONVERT_M) 95 96 /* conversion of orientation data to degree units */ 97 #define CONVERT_O (1.0f/64.0f) 98 #define CONVERT_O_A (CONVERT_O) 99 #define CONVERT_O_P (CONVERT_O) 100 #define CONVERT_O_R (-CONVERT_O) 101 102 // conversion of gyro data to SI units (radian/sec) 103 #define RANGE_GYRO (2000.0f*(float)M_PI/180.0f) 104 #define CONVERT_GYRO ((70.0f / 1000.0f) * ((float)M_PI / 180.0f)) 105 #define CONVERT_GYRO_X (CONVERT_GYRO) 106 #define CONVERT_GYRO_Y (-CONVERT_GYRO) 107 #define CONVERT_GYRO_Z (CONVERT_GYRO) 108 109 #define SENSOR_STATE_MASK (0x7FFF) 110 111 /*****************************************************************************/ 112 113 __END_DECLS 114 115 #endif // ANDROID_SENSORS_H 116