ardupilot/libraries/AP_Airspeed/AP_Airspeed_I2C.h

53 lines
1.4 KiB
C++

/// -*- 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 <http://www.gnu.org/licenses/>.
*/
/*
backend driver for airspeed from I2C
*/
#ifndef __AP_AIRSPEED_I2C_H__
#define __AP_AIRSPEED_I2C_H__
#include <AP_HAL/AP_HAL.h>
#include "AP_Airspeed_Backend.h"
class AP_Airspeed_I2C : public AP_Airspeed_Backend
{
public:
// probe and initialise the sensor
bool init(void);
// return the current differential_pressure in Pascal
bool get_differential_pressure(float &pressure);
// return the current temperature in degrees C, if available
bool get_temperature(float &temperature);
private:
void _measure(void);
void _collect(void);
void _timer(void);
float _temperature;
float _pressure;
uint32_t _last_sample_time_ms;
uint32_t _measurement_started_ms;
};
#endif // __AP_AIRSPEED_I2C_H__