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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef COMPASS_SENSOR_H
#define COMPASS_SENSOR_H
#include <stdint.h>
#include <errno.h>
#include <sys/cdefs.h>
#include <sys/types.h>
#include "SensorBase.h"
// TODO: include 3rd-party compass vendor's header file
// p.s.: before using unified HAL, make sure 3rd-party compass
// solution's driver/HAL work well by themselves
#include "AkmSensor.h"
/*****************************************************************************/
class CompassSensor : public SensorBase {
protected:
public:
CompassSensor();
virtual ~CompassSensor();
// TODO: make sure either 3rd-party compass solution has following virtual
// functions, or SensorBase.cpp could provide equal functionalities
virtual int getFd() const;
virtual int getRawFd() {return 0;};
virtual int enable(int32_t handle, int enabled);
virtual int setDelay(int32_t handle, int64_t ns);
virtual int getEnable(int32_t handle);
virtual int64_t getDelay(int32_t handle);
virtual int64_t getMinDelay() { return -1; } // stub
// TODO: unnecessary for MPL solution (override 3rd-party solution)
virtual int readEvents(sensors_event_t *data, int count) { return 0; }
// TODO: following four APIs need further implementation for MPL's
// reference (look into .cpp for detailed information, also refer to
// 3rd-party's readEvents() for relevant APIs)
int readSample(long *data, int64_t *timestamp);
int readRawSample(float *data, int64_t *timestamp);
void fillList(struct sensor_t *list);
void getOrientationMatrix(signed char *orient);
int getAccuracy();
virtual void getCompassBias(long *bias) {return;};
// TODO: if 3rd-party provides calibrated compass data, just return 1
int providesCalibration() { return 1; }
// TODO: hard-coded for 3rd-party's sensitivity transformation
long getSensitivity() { return (1L << 30); }
/* all 3rd pary solution have compasses on the primary bus, hence they
have no dependency on the MPU */
int isIntegrated() { return 0; }
int checkCoilsReset(void) { return 0; };
int isYasCompass(void) { return 0; };
private:
AkmSensor *mCompassSensor;
};
/*****************************************************************************/
#endif // COMPASS_SENSOR_H
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