1 /* 2 * Copyright (C) 2012 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 COMPASS_SENSOR_H 18 #define COMPASS_SENSOR_H 19 20 #include <stdint.h> 21 #include <errno.h> 22 #include <sys/cdefs.h> 23 #include <sys/types.h> 24 25 // TODO fixme, need input_event 26 #include <stdint.h> 27 #include <errno.h> 28 #include <sys/cdefs.h> 29 #include <sys/types.h> 30 #include <poll.h> 31 #include <utils/Vector.h> 32 #include <utils/KeyedVector.h> 33 34 #include "sensors.h" 35 #include "SensorBase.h" 36 #include "InputEventReader.h" 37 38 class CompassSensor : public SensorBase { 39 40 public: 41 CompassSensor(); 42 virtual ~CompassSensor(); 43 44 virtual int getFd() const; 45 virtual int enable(int32_t handle, int enabled); 46 virtual int setDelay(int32_t handle, int64_t ns); 47 virtual int getEnable(int32_t handle); 48 virtual int64_t getDelay(int32_t handle); 49 50 // unnecessary for MPL 51 virtual int readEvents(sensors_event_t *data, int count) { return 0; } 52 53 int readSample(long *data, int64_t *timestamp); 54 int providesCalibration() { return 0; } 55 void getOrientationMatrix(signed char *orient); 56 long getSensitivity(); 57 int getAccuracy() { return 0; } 58 void fillList(struct sensor_t *list); 59 int isIntegrated() { return (mI2CBus == COMPASS_BUS_SECONDARY); } 60 61 private: 62 enum CompassBus { 63 COMPASS_BUS_PRIMARY = 0, 64 COMPASS_BUS_SECONDARY = 1 65 } mI2CBus; 66 67 struct sysfs_attrbs { 68 char *compass_enable; 69 char *compass_x_fifo_enable; 70 char *compass_y_fifo_enable; 71 char *compass_z_fifo_enable; 72 char *compass_rate; 73 char *compass_scale; 74 char *compass_orient; 75 } compassSysFs; 76 77 // implementation specific 78 signed char mCompassOrientation[9]; 79 long mCachedCompassData[3]; 80 int compass_fd; 81 int64_t mCompassTimestamp; 82 InputEventCircularReader mCompassInputReader; 83 int64_t mDelay; 84 int mEnable; 85 char *pathP; 86 87 void processCompassEvent(const input_event *event); 88 int inv_init_sysfs_attributes(void); 89 }; 90 91 /*****************************************************************************/ 92 93 #endif // COMPASS_SENSOR_H 94
