hc_sr04.cpp File Reference

Driver for the hc_sr04 sonar range finders . More...

#include <px4_config.h>
#include <px4_workqueue.h>
#include <drivers/device/device.h>
#include <px4_defines.h>
#include <containers/Array.hpp>
#include <sys/types.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>
#include <semaphore.h>
#include <string.h>
#include <fcntl.h>
#include <poll.h>
#include <errno.h>
#include <stdio.h>
#include <math.h>
#include <unistd.h>
#include <perf/perf_counter.h>
#include <systemlib/err.h>
#include <drivers/drv_hrt.h>
#include <drivers/drv_range_finder.h>
#include <drivers/device/ringbuffer.h>
#include <uORB/uORB.h>
#include <uORB/topics/distance_sensor.h>

Classes
class	HC_SR04

Namespaces
	hc_sr04
	Local functions in support of the shell command.

Macros
#define	SR04_MAX_RANGEFINDERS   6
#define	SR04_ID_BASE   0x10
#define	SR04_DEVICE_PATH   "/dev/hc_sr04"
#define	SR04_MIN_DISTANCE   (0.10f)
#define	SR04_MAX_DISTANCE   (4.00f)
#define	SR04_CONVERSION_INTERVAL   100000 /* 100ms for one sonar */

Functions
__EXPORT int	hc_sr04_main (int argc, char *argv[])
void	hc_sr04::start ()
	Start the driver. More...
void	hc_sr04::stop ()
	Stop the driver.
void	hc_sr04::test ()
	Perform some basic functional tests on the driver; make sure we can collect data from the sensor in polled and automatic modes.
void	hc_sr04::reset ()
	Reset the driver.
void	hc_sr04::info ()
	Print a little info about the driver.

Variables
HC_SR04 *	hc_sr04::g_dev

Detailed Description

Driver for the hc_sr04 sonar range finders .