//Original Code Konrad Peschka 2020 - Tinkercad
//Update - José Manuel Díaz - Fab Academy 2022 
//JOSAMD 1.0 
//SAMD11C

void setup()
{
Serial.begin(9600);
}

void loop()
{
  long distance=0.01723 * readUltrasonicDistance(5, 4); // Pin (Trig,Echo)
  delay(10); 
  Serial.print("Distance(cm)="); //Serial port printing with distance in Cm
  Serial.println (distance);
}

long readUltrasonicDistance(int triggerPin, int echoPin)
{
  pinMode(triggerPin, OUTPUT);  // Clear the trigger
  digitalWrite(triggerPin, LOW);
  delayMicroseconds(2);
  // Sets the trigger pin to HIGH state for 10 microseconds
  digitalWrite(triggerPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(triggerPin, LOW);
  pinMode(echoPin, INPUT);
  // Reads the echo pin, and returns the sound wave travel time in microseconds
  return pulseIn(echoPin, HIGH);
}