ardupilot/libraries/AP_Baro/AP_Baro_BMP085.h

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/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
#pragma once
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#include <AP_HAL/AP_HAL.h>
#include <AP_HAL/I2CDevice.h>
#include <AP_HAL/utility/OwnPtr.h>
#include <Filter/Filter.h>
#include "AP_Baro_Backend.h"
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class AP_Baro_BMP085 : public AP_Baro_Backend
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{
public:
AP_Baro_BMP085(AP_Baro &baro, AP_HAL::OwnPtr<AP_HAL::I2CDevice> dev);
/* AP_Baro public interface: */
void update();
void accumulate(void);
private:
void _cmd_read_pressure();
void _cmd_read_temp();
bool _read_pressure();
void _read_temp();
void _calculate();
bool _data_ready();
AP_HAL::OwnPtr<AP_HAL::I2CDevice> _dev;
AP_HAL::DigitalSource *_eoc;
uint8_t _instance;
bool _has_sample;
// Boards with no EOC pin: use times instead
uint32_t _last_press_read_command_time;
uint32_t _last_temp_read_command_time;
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// State machine
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uint8_t _state;
// Internal calibration registers
int16_t ac1, ac2, ac3, b1, b2, mb, mc, md;
uint16_t ac4, ac5, ac6;
uint32_t _retry_time;
int32_t _raw_pressure;
int32_t _raw_temp;
int32_t _temp;
AverageIntegralFilter<int32_t, int32_t, 10> _pressure_filter;
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};