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author | Thomas Gubler <thomasgubler@gmail.com> | 2015-01-21 14:41:03 +0100 |
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committer | Thomas Gubler <thomasgubler@gmail.com> | 2015-01-21 14:41:03 +0100 |
commit | dcdde8ea88bf57b0432d2b64ed3ce606795c8d00 (patch) | |
tree | 0bf6e997ffe7f7a9cda98c832dbce39601a9242f /src/modules/land_detector/LandDetector.h | |
parent | 3a38b0fe359296aa19ec43ab82743aebeadb335c (diff) | |
parent | e8e4a3b5da058bd2ab8575c095dd74a5484333be (diff) | |
download | px4-firmware-dcdde8ea88bf57b0432d2b64ed3ce606795c8d00.tar.gz px4-firmware-dcdde8ea88bf57b0432d2b64ed3ce606795c8d00.tar.bz2 px4-firmware-dcdde8ea88bf57b0432d2b64ed3ce606795c8d00.zip |
Merge remote-tracking branch 'upstream/master' into ros_messagelayer_merge
Conflicts:
src/modules/attitude_estimator_ekf/attitude_estimator_ekf_main.cpp
src/modules/uORB/topics/vehicle_attitude.h
Diffstat (limited to 'src/modules/land_detector/LandDetector.h')
-rw-r--r-- | src/modules/land_detector/LandDetector.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/modules/land_detector/LandDetector.h b/src/modules/land_detector/LandDetector.h new file mode 100644 index 000000000..09db6e474 --- /dev/null +++ b/src/modules/land_detector/LandDetector.h @@ -0,0 +1,104 @@ +/**************************************************************************** + * + * Copyright (c) 2013-2015 PX4 Development Team. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file LandDetector.h + * Abstract interface for land detector algorithms + * + * @author Johan Jansen <jnsn.johan@gmail.com> + */ + +#ifndef __LAND_DETECTOR_H__ +#define __LAND_DETECTOR_H__ + +#include <uORB/uORB.h> +#include <uORB/topics/vehicle_land_detected.h> + +class LandDetector +{ +public: + + LandDetector(); + virtual ~LandDetector(); + + /** + * @return true if this task is currently running + **/ + inline bool isRunning() const {return _taskIsRunning;} + + /** + * @brief Tells the Land Detector task that it should exit + **/ + void shutdown(); + + /** + * @brief Blocking function that should be called from it's own task thread. This method will + * run the underlying algorithm at the desired update rate and publish if the landing state changes. + **/ + void start(); + +protected: + + /** + * @brief Pure abstract method that must be overriden by sub-classes. This actually runs the underlying algorithm + * @return true if a landing was detected and this should be broadcast to the rest of the system + **/ + virtual bool update() = 0; + + /** + * @brief Pure abstract method that is called by this class once for initializing the uderlying algorithm (memory allocation, + * uORB topic subscription, creating file descriptors, etc.) + **/ + virtual void initialize() = 0; + + /** + * @brief Convinience function for polling uORB subscriptions + * @return true if there was new data and it was successfully copied + **/ + bool orb_update(const struct orb_metadata *meta, int handle, void *buffer); + + static constexpr uint32_t LAND_DETECTOR_UPDATE_RATE = 50; /**< Run algorithm at 50Hz */ + + static constexpr uint64_t LAND_DETECTOR_TRIGGER_TIME = 2000000; /**< usec that landing conditions have to hold + before triggering a land */ + +protected: + orb_advert_t _landDetectedPub; /**< publisher for position in local frame */ + struct vehicle_land_detected_s _landDetected; /**< local vehicle position */ + +private: + bool _taskShouldExit; /**< true if it is requested that this task should exit */ + bool _taskIsRunning; /**< task has reached main loop and is currently running */ +}; + +#endif //__LAND_DETECTOR_H__ |