FlightTaskFailsafe.cpp
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/****************************************************************************
*
* Copyright (c) 2018 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 FlightTaskFailsafe.cpp
*/
#include "FlightTaskFailsafe.hpp"
bool FlightTaskFailsafe::activate(const vehicle_local_position_setpoint_s &last_setpoint)
{
bool ret = FlightTask::activate(last_setpoint);
_position_setpoint = _position;
_velocity_setpoint.zero();
_acceleration_setpoint = matrix::Vector3f(0.f, 0.f, .3f);
_yaw_setpoint = _yaw;
_yawspeed_setpoint = 0.f;
return ret;
}
bool FlightTaskFailsafe::update()
{
bool ret = FlightTask::update();
if (PX4_ISFINITE(_position(0)) && PX4_ISFINITE(_position(1))) {
// stay at current position setpoint
_velocity_setpoint(0) = _velocity_setpoint(1) = 0.f;
_acceleration_setpoint(0) = _acceleration_setpoint(1) = 0.f;
} else if (PX4_ISFINITE(_velocity(0)) && PX4_ISFINITE(_velocity(1))) {
// don't move along xy
_position_setpoint(0) = _position_setpoint(1) = NAN;
_acceleration_setpoint(0) = _acceleration_setpoint(1) = NAN;
}
if (PX4_ISFINITE(_position(2))) {
// stay at current altitude setpoint
_velocity_setpoint(2) = 0.f;
_acceleration_setpoint(2) = NAN;
} else if (PX4_ISFINITE(_velocity(2))) {
// land with landspeed
_velocity_setpoint(2) = _param_mpc_land_speed.get();
_position_setpoint(2) = NAN;
_acceleration_setpoint(2) = NAN;
}
return ret;
}