Files
PX4-Autopilot/src/drivers/differential_pressure/sdp3x/SDP3X.hpp
T
Beat Küng 3198610f85 src/platforms: move all headers to platforms/common/include/px4_platform_common
and remove the px4_ prefix, except for px4_config.h.

command to update includes:
for k in app.h atomic.h cli.h console_buffer.h defines.h getopt.h i2c.h init.h log.h micro_hal.h module.h module_params.h param.h param_macros.h posix.h sem.h sem.hpp shmem.h shutdown.h tasks.h time.h workqueue.h; do for i in $(grep -rl 'include <px4_'$k src platforms boards); do sed -i 's/#include <px4_'$k'/#include <px4_platform_common\/'$k/ $i; done; done
for in $(grep -rl 'include <px4_config.h' src platforms boards); do sed -i 's/#include <px4_config.h/#include <px4_platform_common\/px4_config.h'/ $i; done

Transitional headers for submodules are added (px4_{defines,log,time}.h)
2019-10-30 11:48:47 +01:00

107 lines
3.5 KiB
C++

/****************************************************************************
*
* Copyright (c) 2017 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.
*
****************************************************************************/
/**
* @file SDP3X.hpp
*
* Driver for Sensirion SDP3X Differential Pressure Sensor
*
* Datasheet: https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/8_Differential_Pressure/Sensirion_Differential_Pressure_Sensors_SDP3x_Digital_Datasheet_V0.8.pdf
*/
#ifndef DRIVERS_SDP3X_AIRSPEED_HPP_
#define DRIVERS_SDP3X_AIRSPEED_HPP_
#include <drivers/airspeed/airspeed.h>
#include <math.h>
#include <mathlib/math/filter/LowPassFilter2p.hpp>
#include <px4_platform_common/getopt.h>
#define I2C_ADDRESS_1_SDP3X 0x21
#define I2C_ADDRESS_2_SDP3X 0x22
#define I2C_ADDRESS_3_SDP3X 0x23
#define SDP3X_SCALE_TEMPERATURE 200.0f
#define SDP3X_RESET_ADDR 0x00
#define SDP3X_RESET_CMD 0x06
#define SDP3X_CONT_MEAS_AVG_MODE 0x3615
#define SDP3X_SCALE_PRESSURE_SDP31 60
#define SDP3X_SCALE_PRESSURE_SDP32 240
#define SDP3X_SCALE_PRESSURE_SDP33 20
#define PATH_SDP3X "/dev/sdp3x"
// Measurement rate is 20Hz
#define SPD3X_MEAS_RATE 100
#define SDP3X_MEAS_DRIVER_FILTER_FREQ 3.0f
#define CONVERSION_INTERVAL (1000000 / SPD3X_MEAS_RATE) /* microseconds */
class SDP3X : public Airspeed
{
public:
SDP3X(int bus, int address = I2C_ADDRESS_1_SDP3X, const char *path = PATH_SDP3X) :
Airspeed(bus, address, CONVERSION_INTERVAL, path)
{
}
private:
/**
* Perform a poll cycle; collect from the previous measurement
* and start a new one.
*/
void Run() override;
int measure() override { return 0; }
int collect() override;
int probe() override;
math::LowPassFilter2p _filter{SPD3X_MEAS_RATE, SDP3X_MEAS_DRIVER_FILTER_FREQ};
bool init_sdp3x();
/**
* Calculate the CRC8 for the sensor payload data
*/
bool crc(const uint8_t data[], unsigned size, uint8_t checksum);
/**
* Write a command in Sensirion specific logic
*/
int write_command(uint16_t command);
uint16_t _scale{0};
};
#endif /* DRIVERS_SDP3X_AIRSPEED_HPP_ */