Airspeed Class Reference

Inheritance diagram for Airspeed:

Public Member Functions
	Airspeed (int bus, int address, unsigned conversion_interval, const char *path)
virtual int	init ()
virtual int	ioctl (device::file_t *filp, int cmd, unsigned long arg)

Protected Member Functions
virtual int	probe ()
virtual void	cycle ()=0
	Perform a poll cycle; collect from the previous measurement and start a new one.
virtual int	measure ()=0
virtual int	collect ()=0
void	start ()
	Initialise the automatic measurement state machine and start it. More...
void	stop ()
	Stop the automatic measurement state machine.
void	new_report (const differential_pressure_s &report)
	add a new report to the reports queue More...

Static Protected Member Functions
static void	cycle_trampoline (void *arg)
	Static trampoline from the workq context; because we don't have a generic workq wrapper yet. More...

Protected Attributes
work_s	_work
bool	_sensor_ok
int	_measure_ticks
bool	_collect_phase
float	_diff_pres_offset
orb_advert_t	_airspeed_pub
int	_airspeed_orb_class_instance
int	_class_instance
unsigned	_conversion_interval
perf_counter_t	_sample_perf
perf_counter_t	_comms_errors

Member Function Documentation

cycle_trampoline()

void Airspeed::cycle_trampoline ( void *  arg )

staticprotected

Static trampoline from the workq context; because we don't have a generic workq wrapper yet.

Parameters

arg	Instance pointer for the driver that is polling.

new_report()

void Airspeed::new_report ( const differential_pressure_s &  report )

protected

add a new report to the reports queue

Parameters

report

differential_pressure_s report

start()

void Airspeed::start ( void  )

protected

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.

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

• src/lib/drivers/airspeed/airspeed.h
• src/lib/drivers/airspeed/airspeed.cpp