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 #include <math.h> 25 26 #include <linux/input.h> 27 28 #include <hardware/hardware.h> 29 #include <hardware/sensors.h> 30 31 __BEGIN_DECLS 32 33 /*****************************************************************************/ 34 35 int init_nusensors(hw_module_t const* module, hw_device_t** device); 36 37 /*****************************************************************************/ 38 39 #define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0])) 40 41 #define ID_A (0) 42 #define ID_M (1) 43 #define ID_O (2) 44 #define ID_T (3) 45 #define ID_P (4) 46 #define ID_L (5) 47 #define ID_B (6) 48 #define ID_G (7) 49 50 /*****************************************************************************/ 51 52 /* 53 * The SENSORS Module 54 */ 55 56 /* the SFH7743 is a binary proximity sensor that triggers around 6 cm on 57 * this hardware */ 58 #define PROXIMITY_THRESHOLD_CM 6.0f 59 60 /*****************************************************************************/ 61 62 #define AKM_DEVICE_NAME "/dev/akm8975_aot" 63 #define ACCELEROMETER_DEVICE_NAME "/dev/kxtf9" 64 #define LIGHTING_DEVICE_NAME "/dev/max9635" 65 #define BAROMETER_DEVICE_NAME "/dev/bmp085" 66 #define GYROSCOPE_DEVICE_NAME "/dev/l3g4200d" 67 68 #define EVENT_TYPE_ACCEL_X REL_X 69 #define EVENT_TYPE_ACCEL_Y REL_Y 70 #define EVENT_TYPE_ACCEL_Z REL_Z 71 72 #define EVENT_TYPE_YAW REL_RX 73 #define EVENT_TYPE_PITCH REL_RY 74 #define EVENT_TYPE_ROLL REL_RZ 75 #define EVENT_TYPE_ORIENT_STATUS REL_HWHEEL 76 77 #define EVENT_TYPE_MAGV_X REL_DIAL 78 #define EVENT_TYPE_MAGV_Y REL_WHEEL 79 #define EVENT_TYPE_MAGV_Z REL_MISC 80 81 #define EVENT_TYPE_LIGHT MSC_RAW 82 #define EVENT_TYPE_PRESSURE ABS_PRESSURE 83 84 #define EVENT_TYPE_GYRO_P REL_RX 85 #define EVENT_TYPE_GYRO_R REL_RY 86 #define EVENT_TYPE_GYRO_Y REL_RZ 87 88 // 1024 LSG = 1G 89 #define LSG (1024.0f) 90 #define MAX_RANGE_A (2*GRAVITY_EARTH) 91 // conversion of acceleration data to SI units (m/s^2) 92 #define CONVERT_A (GRAVITY_EARTH / LSG) 93 #define CONVERT_A_X (CONVERT_A) 94 #define CONVERT_A_Y (CONVERT_A) 95 #define CONVERT_A_Z (CONVERT_A) 96 97 // conversion of magnetic data to uT units 98 #define CONVERT_M (1.0f/16.0f) 99 #define CONVERT_M_X (CONVERT_M) 100 #define CONVERT_M_Y (CONVERT_M) 101 #define CONVERT_M_Z (CONVERT_M) 102 103 #define CONVERT_O (1.0f/64.0f) 104 #define CONVERT_O_Y (CONVERT_O) 105 #define CONVERT_O_P (CONVERT_O) 106 #define CONVERT_O_R (-CONVERT_O) 107 108 // conversion of angular velocity(millidegrees/second) to rad/s 109 #define MAX_RANGE_G (2000.0f * ((float)(M_PI/180.0f))) 110 #define CONVERT_G ((70.0f/1000.0f) * ((float)(M_PI/180.0f))) 111 #define CONVERT_G_P (CONVERT_G) 112 #define CONVERT_G_R (CONVERT_G) 113 #define CONVERT_G_Y (CONVERT_G) 114 115 #define CONVERT_B (1.0f/100.0f) 116 117 #define SENSOR_STATE_MASK (0x7FFF) 118 119 /*****************************************************************************/ 120 121 __END_DECLS 122 123 #endif // ANDROID_SENSORS_H 124
