// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
/*
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see .
*/
#pragma once
#include
#include
#include "RangeFinder.h"
class AP_RangeFinder_Backend
{
public:
// constructor. This incorporates initialisation as well.
AP_RangeFinder_Backend(RangeFinder &_ranger, uint8_t instance, RangeFinder::RangeFinder_State &_state);
// we declare a virtual destructor so that RangeFinder drivers can
// override with a custom destructor if need be
virtual ~AP_RangeFinder_Backend(void) {}
// update the state structure
virtual void update() = 0;
// return true if we are beyond the power saving range
bool out_of_range(void) const {
return ranger._powersave_range > 0 && ranger.estimated_terrain_height > ranger._powersave_range;
}
protected:
// update status based on distance measurement
void update_status();
// set status and update valid_count
void set_status(RangeFinder::RangeFinder_Status status);
RangeFinder &ranger;
RangeFinder::RangeFinder_State &state;
};