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85 lines
2.9 KiB
85 lines
2.9 KiB
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef COMPASS_SENSOR_H
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#define COMPASS_SENSOR_H
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#include <stdint.h>
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#include <errno.h>
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include "SensorBase.h"
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// TODO: include 3rd-party compass vendor's header file
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// p.s.: before using unified HAL, make sure 3rd-party compass
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// solution's driver/HAL work well by themselves
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#include "AkmSensor.h"
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/*****************************************************************************/
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class CompassSensor : public SensorBase {
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protected:
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public:
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CompassSensor();
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virtual ~CompassSensor();
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// TODO: make sure either 3rd-party compass solution has following virtual
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// functions, or SensorBase.cpp could provide equal functionalities
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virtual int getFd() const;
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virtual int getRawFd() {return 0;};
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virtual int enable(int32_t handle, int enabled);
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virtual int setDelay(int32_t handle, int64_t ns);
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virtual int getEnable(int32_t handle);
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virtual int64_t getDelay(int32_t handle);
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virtual int64_t getMinDelay() { return -1; } // stub
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// TODO: unnecessary for MPL solution (override 3rd-party solution)
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virtual int readEvents(sensors_event_t *data, int count) { return 0; }
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// TODO: following four APIs need further implementation for MPL's
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// reference (look into .cpp for detailed information, also refer to
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// 3rd-party's readEvents() for relevant APIs)
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int readSample(long *data, int64_t *timestamp);
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int readRawSample(float *data, int64_t *timestamp);
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void fillList(struct sensor_t *list);
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void getOrientationMatrix(signed char *orient);
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int getAccuracy();
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virtual void getCompassBias(long *bias) {return;};
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// TODO: if 3rd-party provides calibrated compass data, just return 1
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int providesCalibration() { return 1; }
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// TODO: hard-coded for 3rd-party's sensitivity transformation
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long getSensitivity() { return (1L << 30); }
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/* all 3rd pary solution have compasses on the primary bus, hence they
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have no dependency on the MPU */
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int isIntegrated() { return 0; }
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int checkCoilsReset(void) { return 0; };
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int isYasCompass(void) { return 0; };
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private:
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AkmSensor *mCompassSensor;
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};
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/*****************************************************************************/
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#endif // COMPASS_SENSOR_H
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