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-/****************************************************************************
- *
- * Copyright (C) 2012-2013 PX4 Development Team. All rights reserved.
- * Author: Lorenz Meier <lm@inf.ethz.ch>
- *
- * 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 airspeed.h
- * Airspeed estimation declarations
- *
- * @author Lorenz Meier <lm@inf.ethz.ch>
- *
- */
-
-#ifndef AIRSPEED_H_
-#define AIRSPEED_H_
-
-#include "math.h"
-#include "conversions.h"
-
- __BEGIN_DECLS
-
- /**
- * Calculate indicated airspeed.
- *
- * Note that the indicated airspeed is not the true airspeed because it
- * lacks the air density compensation. Use the calc_true_airspeed functions to get
- * the true airspeed.
- *
- * @param total_pressure pressure inside the pitot/prandtl tube
- * @param static_pressure pressure at the side of the tube/airplane
- * @return indicated airspeed in m/s
- */
- __EXPORT float calc_indicated_airspeed(float differential_pressure);
-
- /**
- * Calculate true airspeed from indicated airspeed.
- *
- * Note that the true airspeed is NOT the groundspeed, because of the effects of wind
- *
- * @param speed_indicated current indicated airspeed
- * @param pressure_ambient pressure at the side of the tube/airplane
- * @param temperature_celsius air temperature in degrees celcius
- * @return true airspeed in m/s
- */
- __EXPORT float calc_true_airspeed_from_indicated(float speed_indicated, float pressure_ambient, float temperature_celsius);
-
- /**
- * Directly calculate true airspeed
- *
- * Note that the true airspeed is NOT the groundspeed, because of the effects of wind
- *
- * @param total_pressure pressure inside the pitot/prandtl tube
- * @param static_pressure pressure at the side of the tube/airplane
- * @param temperature_celsius air temperature in degrees celcius
- * @return true airspeed in m/s
- */
- __EXPORT float calc_true_airspeed(float total_pressure, float static_pressure, float temperature_celsius);
-
-__END_DECLS
-
-#endif