1 /* 2 * Copyright (C) 2014 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 virtual int64_t getMinDelay() { return -1; } // stub 50 51 // unnecessary for MPL 52 virtual int readEvents(sensors_event_t *data, int count) { return 0; } 53 54 int turnOffCompassFifo(void); 55 int turnOnCompassFifo(void); 56 int readSample(long *data, int64_t *timestamp); 57 int providesCalibration() { return 0; } 58 void getOrientationMatrix(signed char *orient); 59 long getSensitivity(); 60 int getAccuracy() { return 0; } 61 void fillList(struct sensor_t *list); 62 int isIntegrated() { return (1); } 63 int isYasCompass(void) { return (0); } 64 int checkCoilsReset(void) { return(-1); } 65 66 private: 67 char sensor_name[200]; 68 enum CompassBus { 69 COMPASS_BUS_PRIMARY = 0, 70 COMPASS_BUS_SECONDARY = 1 71 } mI2CBus; 72 73 struct sysfs_attrbs { 74 char *compass_enable; 75 char *compass_fifo_enable; 76 char *compass_x_fifo_enable; 77 char *compass_y_fifo_enable; 78 char *compass_z_fifo_enable; 79 char *compass_rate; 80 char *compass_scale; 81 char *compass_orient; 82 } compassSysFs; 83 84 // implementation specific 85 signed char mCompassOrientation[9]; 86 long mCachedCompassData[3]; 87 int compass_fd; 88 int64_t mCompassTimestamp; 89 InputEventCircularReader mCompassInputReader; 90 int64_t mDelay; 91 int mEnable; 92 char *pathP; 93 94 void processCompassEvent(const input_event *event); 95 int inv_init_sysfs_attributes(void); 96 }; 97 98 /*****************************************************************************/ 99 100 #endif // COMPASS_SENSOR_H 101
