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PX4-Autopilot/src/modules/sensors/rc_update.h
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/****************************************************************************
*
* Copyright (c) 2016 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.
*
****************************************************************************/
#pragma once
/**
* @file rc_update.h
*
* @author Beat Kueng <beat-kueng@gmx.net>
*/
#include "parameters.h"
#include <drivers/drv_hrt.h>
#include <mathlib/mathlib.h>
#include <mathlib/math/filter/LowPassFilter2p.hpp>
#include <uORB/topics/rc_channels.h>
namespace sensors
{
/**
** class RCUpdate
*
* Handling of RC updates
*/
class RCUpdate
{
public:
/**
* @param parameters parameter values. These do not have to be initialized when constructing this object.
* Only when calling init(), they have to be initialized.
*/
RCUpdate(const Parameters &parameters);
/**
* initialize subscriptions etc.
* @return 0 on success, <0 otherwise
*/
int init();
/**
* deinitialize the object (we cannot use the destructor because it is called on the wrong thread)
*/
void deinit();
/**
* Check for changes in rc_parameter_map
*/
void rc_parameter_map_poll(ParameterHandles &parameter_handles, bool forced = false);
/**
* update the RC functions. Call this when the parameters change.
*/
void update_rc_functions();
/**
* Gather and publish RC input data.
*/
void rc_poll(const ParameterHandles &parameter_handles);
private:
/**
* Get and limit value for specified RC function. Returns NAN if not mapped.
*/
float get_rc_value(uint8_t func, float min_value, float max_value);
/**
* Get switch position for specified function.
*/
switch_pos_t get_rc_sw3pos_position(uint8_t func, float on_th, bool on_inv, float mid_th, bool mid_inv);
switch_pos_t get_rc_sw2pos_position(uint8_t func, float on_th, bool on_inv);
/**
* Update parameters from RC channels if the functionality is activated and the
* input has changed since the last update
*
* @param
*/
void set_params_from_rc(const ParameterHandles &parameter_handles);
int _rc_sub = -1; /**< raw rc channels data subscription */
int _rc_parameter_map_sub = -1; /**< rc parameter map subscription */
orb_advert_t _rc_pub = nullptr; /**< raw r/c control topic */
orb_advert_t _manual_control_pub = nullptr; /**< manual control signal topic */
orb_advert_t _actuator_group_3_pub = nullptr;/**< manual control as actuator topic */
struct rc_channels_s _rc; /**< r/c channel data */
struct rc_parameter_map_s _rc_parameter_map;
float _param_rc_values[rc_parameter_map_s::RC_PARAM_MAP_NCHAN]; /**< parameter values for RC control */
const Parameters &_parameters;
hrt_abstime _last_rc_to_param_map_time = 0;
math::LowPassFilter2p _filter_roll; /**< filters for the main 4 stick inputs */
math::LowPassFilter2p _filter_pitch; /** we want smooth setpoints as inputs to the controllers */
math::LowPassFilter2p _filter_yaw;
math::LowPassFilter2p _filter_throttle;
};
} /* namespace sensors */