#include <hcsr04.h>

Public Member Functions
	HCSR04 (PinName TrigPin, PinName EchoPin)
	Create a HCSR04 object connected to the specified pin.
unsigned int	get_dist_cm (void)
	Return the distance from obstacle in cm.
unsigned int	get_pulse_us (void)
	Return the pulse duration equal to sonic waves travelling to obstacle and back to receiver.
void	start (void)
	Generates the trigger pulse of 10us on the trigger PIN.

Detailed Description

HCSR04 Class(es)

Definition at line 35 of file hcsr04.h.

Constructor & Destructor Documentation

Create a HCSR04 object connected to the specified pin.

Parameters:

pin	i/o pin to connect to

Definition at line 24 of file hcsr04.cpp.

unsigned int get_dist_cm ( void )

Return the distance from obstacle in cm.

Parameters:

distance in cms and returns -1, in case of failure

Definition at line 66 of file hcsr04.cpp.

unsigned int get_pulse_us ( void )

Return the pulse duration equal to sonic waves travelling to obstacle and back to receiver.

Parameters:

pulse duration in microseconds.

Definition at line 70 of file hcsr04.cpp.

void start ( void )

Generates the trigger pulse of 10us on the trigger PIN.

Definition at line 42 of file hcsr04.cpp.