Daniel Agar
4 years ago
2 changed files with 98 additions and 79 deletions
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/****************************************************************************
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* |
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* Copyright (c) 2020 PX4 Development Team. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name PX4 nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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****************************************************************************/ |
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#ifndef WIND_COV_HPP |
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#define WIND_COV_HPP |
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#include <uORB/topics/vehicle_local_position.h> |
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#include <uORB/topics/wind_estimate.h> |
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class MavlinkStreamWindCov : public MavlinkStream |
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{ |
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public: |
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static MavlinkStream *new_instance(Mavlink *mavlink) { return new MavlinkStreamWindCov(mavlink); } |
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static constexpr const char *get_name_static() { return "WIND_COV"; } |
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static constexpr uint16_t get_id_static() { return MAVLINK_MSG_ID_WIND_COV; } |
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const char *get_name() const override { return get_name_static(); } |
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uint16_t get_id() override { return get_id_static(); } |
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unsigned get_size() override |
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{ |
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return _wind_estimate_sub.advertised() ? MAVLINK_MSG_ID_WIND_COV_LEN + MAVLINK_NUM_NON_PAYLOAD_BYTES : 0; |
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} |
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private: |
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explicit MavlinkStreamWindCov(Mavlink *mavlink) : MavlinkStream(mavlink) {} |
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uORB::Subscription _wind_estimate_sub{ORB_ID(wind_estimate)}; |
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uORB::Subscription _local_pos_sub{ORB_ID(vehicle_local_position)}; |
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bool send() override |
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{ |
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wind_estimate_s wind_estimate; |
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if (_wind_estimate_sub.update(&wind_estimate)) { |
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mavlink_wind_cov_t msg{}; |
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msg.time_usec = wind_estimate.timestamp; |
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msg.wind_x = wind_estimate.windspeed_north; |
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msg.wind_y = wind_estimate.windspeed_east; |
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msg.wind_z = 0.0f; |
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msg.var_horiz = wind_estimate.variance_north + wind_estimate.variance_east; |
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msg.var_vert = 0.0f; |
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vehicle_local_position_s lpos{}; |
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_local_pos_sub.copy(&lpos); |
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msg.wind_alt = (lpos.z_valid && lpos.z_global) ? (-lpos.z + lpos.ref_alt) : NAN; |
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msg.horiz_accuracy = 0.0f; |
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msg.vert_accuracy = 0.0f; |
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mavlink_msg_wind_cov_send_struct(_mavlink->get_channel(), &msg); |
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return true; |
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} |
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return false; |
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} |
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}; |
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#endif // WIND_COV
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