#define ECHO_PIN 2 // deklarasi pin echo 
#define TRIG_PIN 15 // deklarasi pin trigger

void setup() {
  Serial.begin(115200);
  pinMode(TRIG_PIN, OUTPUT); //trigger pin output
  pinMode(ECHO_PIN, INPUT); //echo pin input
}

/*float readDistanceCM() {
  digitalWrite(TRIG_PIN, LOW); // perintah cara kerja sensor ultrasonik
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH); // perintah cara kerja sensor ultrasonik
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW); // perintah cara kerja sensor ultrasonik
  int duration = pulseIn(ECHO_PIN, HIGH); // deklarasi untuk bagian durasi
  return duration * 0.034 / 2; //rumus konversi sensor ultrasonik
}*/

void loop() {
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  int duration = pulseIn(ECHO_PIN, HIGH);*/
  return duration * 0.034 / 2;

  Serial.print("Jarak: ");
  Serial.println(distance);

  delay(100);
}