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-rw-r--r--peripheral/sensors/mraa/SensorsHAL.hpp117
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diff --git a/peripheral/sensors/mraa/SensorsHAL.hpp b/peripheral/sensors/mraa/SensorsHAL.hpp
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-/*
- * Copyright (C) 2015 Intel Corporation
- *
- * 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 SENSORS_HAL_HPP
-#define SENSORS_HAL_HPP
-
-#include <hardware/sensors.h>
-#include <utils/Mutex.h>
-#include "Sensor.hpp"
-#include "SensorUtils.hpp"
-
-/**
- * Maximum number of sensor devices
- */
-#define MAX_DEVICES 20
-
-/**
- * SensorContext represents the HAL entry class
- *
- * The SensorContext class is responsible for initializing
- * a sensors_poll_device_1_t data structure and exposing the
- * sensors.h API methods.
- */
-class SensorContext {
- public:
- /**
- * Sensor poll device
- */
- sensors_poll_device_1_t device;
-
- /**
- * SensorContext constructor
- */
- SensorContext(const hw_module_t* module);
-
- /**
- * SensorContext destructor
- */
- ~SensorContext();
-
- /**
- * Add sensor module by sensor description & sensor factory function
- * @param sensorDesc sensor description
- * @param sensorFactoryFunc sensor factory function
- * @return 0 if success, error otherwise
- */
- static int addSensorModule(struct sensor_t *sensorDesc,
- Sensor * (*sensorFactoryFunc)(int pollFd));
-
- /**
- * Sensors HAL open wrapper function
- * @param module hardware module
- * @param id device identifier
- * @param device where to store the device address
- * @return 0 if success, error otherwise
- */
- static int OpenWrapper(const struct hw_module_t *module,
- const char* id, struct hw_device_t **device);
- /**
- * Sensors HAL get_sensors_list wrapper function
- * @param module sensors module
- * @param list where to store the list of available sensors
- * @return 0 if success, error otherwise
- */
- static int GetSensorsListWrapper(struct sensors_module_t *module,
- struct sensor_t const **list);
- private:
- int activate(int handle, int enabled);
- int setDelay(int handle, int64_t ns);
- int pollEvents(sensors_event_t* data, int count);
- int batch(int handle, int flags, int64_t period_ns, int64_t timeout);
- int flush(int handle);
-
- /*
- * The wrapper pass through to the specific instantiation of
- * the SensorContext.
- */
- static int CloseWrapper(hw_device_t *dev);
- static int ActivateWrapper(sensors_poll_device_t *dev, int handle,
- int enabled);
- static int SetDelayWrapper(sensors_poll_device_t *dev, int handle,
- int64_t ns);
- static int PollEventsWrapper(sensors_poll_device_t *dev,
- sensors_event_t *data, int count);
- static int BatchWrapper(sensors_poll_device_1_t *dev, int handle, int flags,
- int64_t period_ns, int64_t timeout);
- static int FlushWrapper(sensors_poll_device_1_t *dev, int handle);
-
- /* Poll file descriptor */
- int pollFd;
- /* Array of sensors */
- Sensor * sensors[MAX_DEVICES];
-
- /* Array of sensor factory functions */
- static Sensor * (*sensorFactoryFuncs[MAX_DEVICES])(int);
- /* Array of sensor descriptions */
- static struct sensor_t sensorDescs[MAX_DEVICES];
- /* Number of registered sensors */
- static int sensorsNum;
- /* Mutex used to synchronize the Sensor Context */
- static android::Mutex mutex;
-};
-
-#endif // SENSORS_HAL_HPP