ping.h File Reference

distance measurement for ping sensor More...

Go to the source code of this file.

Functions
void	ping_init ()
	initializes ping sensor More...
void	send_pulse ()
	sends a pulse to the ping sensor More...
int	ping_read ()
	reads the response pulse from the ping sensor More...
double	time2dist (int time)
	convert a sonar pulse width time to a distance More...
void	clock_timer_init3 (void)
	initializes a clock timer More...
void	TIMER3B_Handler (void)
	handles interrupts More...

Detailed Description

distance measurement for ping sensor

Author

Steven, Kynara, Saba, Bailey, Brett, Austin

Date

4/24/18

Definition in file ping.h.

Function Documentation

clock_timer_init3()

void clock_timer_init3

(

void

)

initializes a clock timer

sets up the interrupt timer

Definition at line 123 of file ping.c.

ping_init()

void ping_init

(

)

initializes ping sensor

initializes registers and ports for the ping sensor

Definition at line 55 of file ping.c.

ping_read()

int ping_read

(

)

reads the response pulse from the ping sensor

start and read the ping sensor once, return distance in cm

Definition at line 85 of file ping.c.

send_pulse()

void send_pulse

(

)

sends a pulse to the ping sensor

sends a pulse to activate the ping sensor set pin to output, set high for 5us, set low, set to input

Definition at line 69 of file ping.c.

time2dist()

double time2dist

(

int

time

)

convert a sonar pulse width time to a distance

convert pulse width to cm

Parameters

time	is length of pulse from ping sensor time it took to send and receive a sonar pulse

Definition at line 112 of file ping.c.

TIMER3B_Handler()

void TIMER3B_Handler

(

void

)

handles interrupts

detects rising and falling edges of the sensor pin

Definition at line 32 of file ping.c.