BMP280.hpp
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/****************************************************************************
*
* Copyright (c) 2016-2019 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
#include "bmp280.h"
#include <drivers/drv_hrt.h>
#include <px4_platform_common/px4_config.h>
#include <px4_platform_common/i2c_spi_buses.h>
#include <px4_platform_common/px4_work_queue/ScheduledWorkItem.hpp>
#include <lib/drivers/barometer/PX4Barometer.hpp>
#include <lib/perf/perf_counter.h>
class BMP280 : public I2CSPIDriver<BMP280>
{
public:
BMP280(I2CSPIBusOption bus_option, int bus, bmp280::IBMP280 *interface);
virtual ~BMP280();
static I2CSPIDriverBase *instantiate(const BusCLIArguments &cli, const BusInstanceIterator &iterator,
int runtime_instance);
static void print_usage();
int init();
void print_status();
void RunImpl();
private:
void Start();
int measure(); //start measure
int collect(); //get results and publish
PX4Barometer _px4_baro;
bmp280::IBMP280 *_interface;
// set config, recommended settings
static constexpr uint8_t _curr_ctrl{BMP280_CTRL_P16 | BMP280_CTRL_T2};
static constexpr uint32_t _measure_interval{BMP280_MT_INIT + BMP280_MT *(16 - 1 + 2 - 1)};
bool _collect_phase{false};
perf_counter_t _sample_perf;
perf_counter_t _measure_perf;
perf_counter_t _comms_errors;
bmp280::calibration_s *_cal{nullptr}; //stored calibration constants
bmp280::fcalibration_s _fcal{}; //pre processed calibration constants
};