ardupilot/libraries/AP_Airspeed/AP_Airspeed_analog.h

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/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
#pragma once
#include <AP_HAL/AP_HAL.h>
#include <AP_Param/AP_Param.h>
#include "AP_Airspeed_Backend.h"
class AP_Airspeed_Analog : public AP_Airspeed_Backend
{
public:
AP_Airspeed_Analog(const AP_Int8 &pin)
: _source(NULL)
, _pin(pin)
, _last_pin(-1)
{ }
// probe and initialise the sensor
bool init(void);
// return the current differential_pressure in Pascal
bool get_differential_pressure(float &pressure);
// temperature not available via analog backend
bool get_temperature(float &temperature) { return false; }
private:
AP_HAL::AnalogSource *_source;
const AP_Int8 &_pin;
int8_t _last_pin;
};