Car Dashboard

#define CAYENNE_PRINT Serial  
#include <CayenneEthernet.h>
#include <SPI.h>
#include <Ethernet.h>
#define trigPin 8
#define echoPin 9


char token[] = "Token";
#define VIRTUAL_PIN V0
void setup()
{
  
  Serial.begin(9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  Cayenne.begin(token);
}

void loop()
{
  Cayenne.run();
}
CAYENNE_OUT(VIRTUAL_PIN)
{
   long duration, distance;
   digitalWrite(trigPin, LOW);
   delayMicroseconds(2);
   digitalWrite(trigPin, HIGH);
   delayMicroseconds(10);
   digitalWrite(trigPin, LOW);

      duration = pulseIn(echoPin, HIGH);

      distance = (duration/2) / 29.1;

   Cayenne.virtualWrite(VIRTUAL_PIN, distance);
}