#include <LPS22HB.hpp>

Inheritance diagram for LPS22HB:

Collaboration diagram for LPS22HB:

Public Member Functions
	LPS22HB (device::Device interface, const char path)

virtual	~LPS22HB ()

virtual int	init ()

virtual int	ioctl (struct file *filp, int cmd, unsigned long arg)

void	print_info ()
	Diagnostics - print some basic information about the driver. More...

Public Member Functions inherited from cdev::CDev
	CDev (const char *devname)
	Constructor. More...

	CDev (const CDev &)=delete

CDev &	operator= (const CDev &)=delete

	CDev (CDev &&)=delete

CDev &	operator= (CDev &&)=delete

virtual	~CDev ()

virtual int	open (file_t *filep)
	Handle an open of the device. More...

virtual int	close (file_t *filep)
	Handle a close of the device. More...

virtual ssize_t	read (file_t filep, char buffer, size_t buflen)
	Perform a read from the device. More...

virtual ssize_t	write (file_t filep, const char buffer, size_t buflen)
	Perform a write to the device. More...

virtual off_t	seek (file_t *filep, off_t offset, int whence)
	Perform a logical seek operation on the device. More...

virtual int	ioctl (file_t *filep, int cmd, unsigned long arg)
	Perform an ioctl operation on the device. More...

virtual int	poll (file_t filep, px4_pollfd_struct_t fds, bool setup)
	Perform a poll setup/teardown operation. More...

const char *	get_devname () const
	Get the device name. More...

Protected Attributes
device::Device *	_interface

Protected Attributes inherited from cdev::CDev
px4_sem_t	_lock
	lock to protect access to all class members (also for derived classes) More...

Private Member Functions
void	start ()
	Initialise the automatic measurement state machine and start it. More...

void	stop ()
	Stop the automatic measurement state machine. More...

int	reset ()
	Reset the device. More...

void	Run () override
	Perform a poll cycle; collect from the previous measurement and start a new one. More...

int	write_reg (uint8_t reg, uint8_t val)
	Write a register. More...

int	read_reg (uint8_t reg, uint8_t &val)
	Read a register. More...

int	measure ()
	Issue a measurement command. More...

int	collect ()
	Collect the result of the most recent measurement. More...

	LPS22HB (const LPS22HB &)

LPS22HB	operator= (const LPS22HB &)

Private Attributes
unsigned	_measure_interval {0}

bool	_collect_phase {false}

orb_advert_t	_baro_topic {nullptr}

int	_orb_class_instance {-1}

int	_class_instance {-1}

perf_counter_t	_sample_perf

perf_counter_t	_comms_errors

sensor_baro_s	_last_report {}
	used for info() More...

Additional Inherited Members
Protected Member Functions inherited from cdev::CDev
virtual pollevent_t	poll_state (file_t *filep)
	Check the current state of the device for poll events from the perspective of the file. More...

virtual void	poll_notify (pollevent_t events)
	Report new poll events. More...

virtual void	poll_notify_one (px4_pollfd_struct_t *fds, pollevent_t events)
	Internal implementation of poll_notify. More...

virtual int	open_first (file_t *filep)
	Notification of the first open. More...

virtual int	close_last (file_t *filep)
	Notification of the last close. More...

virtual int	register_class_devname (const char *class_devname)
	Register a class device name, automatically adding device class instance suffix if need be. More...

virtual int	unregister_class_devname (const char *class_devname, unsigned class_instance)
	Register a class device name, automatically adding device class instance suffix if need be. More...

void	lock ()
	Take the driver lock. More...

void	unlock ()
	Release the driver lock. More...

int	unregister_driver_and_memory ()
	First, unregisters the driver. More...

Static Protected Attributes inherited from cdev::CDev
static const px4_file_operations_t	fops = {}
	Pointer to the default cdev file operations table; useful for registering clone devices etc. More...

Detailed Description

Definition at line 84 of file LPS22HB.hpp.

Constructor & Destructor Documentation

◆ LPS22HB() [1/2]

LPS22HB::LPS22HB	(	device::Device *	interface,
		const char *	path
	)

Definition at line 45 of file LPS22HB.cpp.

References _interface, DRV_BARO_DEVTYPE_LPS22HB, and device::Device::set_device_type().

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◆ ~LPS22HB()

LPS22HB::~LPS22HB ( )

virtual

Definition at line 56 of file LPS22HB.cpp.

References _class_instance, _comms_errors, _interface, _sample_perf, BARO_BASE_DEVICE_PATH, perf_free(), stop(), and cdev::CDev::unregister_class_devname().

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◆ LPS22HB() [2/2]

LPS22HB::LPS22HB ( const LPS22HB & )

private

Member Function Documentation

◆ collect()

int LPS22HB::collect ( )

private

Collect the result of the most recent measurement.

Definition at line 248 of file LPS22HB.cpp.

References _baro_topic, _comms_errors, _interface, _last_report, _orb_class_instance, _sample_perf, sensor_baro_s::device_id, sensor_baro_s::error_count, device::Device::external(), device::Device::get_device_id(), hrt_absolute_time(), OK, orb_advertise_multi(), ORB_ID, ORB_PRIO_HIGH, ORB_PRIO_MAX, orb_publish(), P, perf_begin(), perf_count(), perf_end(), perf_event_count(), PRESS_OUT_H, PRESS_OUT_L, PRESS_OUT_XL, sensor_baro_s::pressure, device::Device::read(), STATUS, TEMP_OUT_H, TEMP_OUT_L, sensor_baro_s::temperature, and sensor_baro_s::timestamp.

Referenced by Run().

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◆ init()

int LPS22HB::init ( )

virtual

Reimplemented from cdev::CDev.

Definition at line 73 of file LPS22HB.cpp.

References _class_instance, _measure_interval, BARO_BASE_DEVICE_PATH, ToneAlarmInterface::init(), LPS22HB_CONVERSION_INTERVAL, OK, cdev::CDev::register_class_devname(), reset(), and start().

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◆ ioctl()

int LPS22HB::ioctl	(	struct file *	filp,
		int	cmd,
		unsigned long	arg
	)

virtual

Definition at line 100 of file LPS22HB.cpp.

References _interface, _measure_interval, device::Device::ioctl(), LPS22HB_CONVERSION_INTERVAL, OK, reset(), SENSOR_POLLRATE_DEFAULT, SENSORIOCRESET, SENSORIOCSPOLLRATE, and start().

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◆ measure()

int LPS22HB::measure ( )

private

Issue a measurement command.

Returns: OK if the measurement command was successful.

Definition at line 235 of file LPS22HB.cpp.

References _comms_errors, CTRL_REG2, IF_ADD_INC, OK, ONE_SHOT, perf_count(), and write_reg().

Referenced by Run().

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◆ operator=()

LPS22HB LPS22HB::operator= ( const LPS22HB & )

private

◆ print_info()

void LPS22HB::print_info ( )

Diagnostics - print some basic information about the driver.

Definition at line 327 of file LPS22HB.cpp.

References _comms_errors, _last_report, _measure_interval, _sample_perf, and perf_print_counter().

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◆ read_reg()

int LPS22HB::read_reg	(	uint8_t	reg,
		uint8_t &	val
	)

private

Read a register.

Parameters

reg	The register to read.
val	The value read.

Returns: OK on read success.

Definition at line 318 of file LPS22HB.cpp.

References _interface, and device::Device::read().

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◆ reset()

int LPS22HB::reset ( )

private

Reset the device.

Definition at line 184 of file LPS22HB.cpp.

References BOOT, CTRL_REG2, SWRESET, and write_reg().

Referenced by init(), and ioctl().

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◆ Run()

void LPS22HB::Run ( )

overrideprivate

Perform a poll cycle; collect from the previous measurement and start a new one.

This is the heart of the measurement state machine. This function alternately starts a measurement, or collects the data from the previous measurement.

When the interval between measurements is greater than the minimum measurement interval, a gap is inserted between collection and measurement to provide the most recent measurement possible at the next interval.

Definition at line 194 of file LPS22HB.cpp.

References _collect_phase, _measure_interval, collect(), LPS22HB_CONVERSION_INTERVAL, measure(), OK, and start().

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◆ start()

void LPS22HB::start ( )

private

Initialise the automatic measurement state machine and start it.

Note: This function is called at open and error time. It might make sense to make it more aggressive about resetting the bus in case of errors.

Definition at line 168 of file LPS22HB.cpp.

References _collect_phase.

Referenced by init(), ioctl(), and Run().

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◆ stop()

void LPS22HB::stop ( )

private

Stop the automatic measurement state machine.

Definition at line 178 of file LPS22HB.cpp.

Referenced by ~LPS22HB().

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◆ write_reg()

int LPS22HB::write_reg	(	uint8_t	reg,
		uint8_t	val
	)

private

Write a register.

Parameters

reg	The register to write.
val	The value to write.

Returns: OK on write success.

Definition at line 311 of file LPS22HB.cpp.

References _interface, and device::Device::write().

Referenced by measure(), and reset().

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Member Data Documentation

◆ _baro_topic

orb_advert_t LPS22HB::_baro_topic {nullptr}

private

Definition at line 107 of file LPS22HB.hpp.

Referenced by collect().

◆ _class_instance

int LPS22HB::_class_instance {-1}

private

Definition at line 110 of file LPS22HB.hpp.

Referenced by init(), and ~LPS22HB().

◆ _collect_phase

bool LPS22HB::_collect_phase {false}

private

Definition at line 105 of file LPS22HB.hpp.

Referenced by Run(), and start().

◆ _comms_errors

perf_counter_t LPS22HB::_comms_errors

private

Definition at line 113 of file LPS22HB.hpp.

Referenced by collect(), measure(), print_info(), and ~LPS22HB().

◆ _interface

device::Device* LPS22HB::_interface

protected

Definition at line 100 of file LPS22HB.hpp.

Referenced by collect(), ioctl(), LPS22HB(), read_reg(), write_reg(), and ~LPS22HB().

◆ _last_report

sensor_baro_s LPS22HB::_last_report {}

private

used for info()

Definition at line 115 of file LPS22HB.hpp.

Referenced by collect(), and print_info().

◆ _measure_interval

unsigned LPS22HB::_measure_interval {0}

private

Definition at line 103 of file LPS22HB.hpp.

Referenced by init(), ioctl(), print_info(), and Run().

◆ _orb_class_instance

int LPS22HB::_orb_class_instance {-1}

private

Definition at line 109 of file LPS22HB.hpp.

Referenced by collect().

◆ _sample_perf

perf_counter_t LPS22HB::_sample_perf

private

Definition at line 112 of file LPS22HB.hpp.

Referenced by collect(), print_info(), and ~LPS22HB().

The documentation for this class was generated from the following files:

src/drivers/barometer/lps22hb/LPS22HB.hpp
src/drivers/barometer/lps22hb/LPS22HB.cpp

Public Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ LPS22HB() [1/2]

◆ ~LPS22HB()

◆ LPS22HB() [2/2]

Member Function Documentation

◆ collect()

◆ init()

◆ ioctl()

◆ measure()

◆ operator=()

◆ print_info()

◆ read_reg()

◆ reset()

◆ Run()

◆ start()

◆ stop()

◆ write_reg()

Member Data Documentation

◆ _baro_topic

◆ _class_instance

◆ _collect_phase

◆ _comms_errors

◆ _interface

◆ _last_report

◆ _measure_interval

◆ _orb_class_instance

◆ _sample_perf