#define ULTRASONIC_TRIGGER_PIN 15
#define ULTRASONIC_ECHO_PIN 13


void setup_ultrasonic(){
    pinMode(ULTRASONIC_TRIGGER_PIN, OUTPUT);
    pinMode(ULTRASONIC_ECHO_PIN, INPUT);
}

void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
 setup_ultrasonic();
}
int wizgear_ultrasonic_value(){
  digitalWrite(ULTRASONIC_TRIGGER_PIN, LOW); // Clears the trigPin
  delayMicroseconds(2);
  digitalWrite(ULTRASONIC_TRIGGER_PIN, HIGH); // Sets the trigPin on HIGH state for 10 micro seconds
  delayMicroseconds(10);
  digitalWrite(ULTRASONIC_TRIGGER_PIN, LOW);
  int dur = pulseIn(ULTRASONIC_ECHO_PIN, HIGH); // Reads the echoPin, returns the sound wave travel time in microseconds
  int dist = (int) dur*0.034/2; // Calculating the distance
  return dist;
}

void loop() {
  // put your main code here, to run repeatedly:
setup_ultrasonic();
int ultrasonicvalue = wizgear_ultrasonic_value();
Serial.print("Ultrasonic Value=");
Serial.println(ultrasonicvalue);
delay(1000);
}