//#define CAYENNE_DEBUG
#define CAYENNE_PRINT Serial  // Comment this out to disable prints and save space
#include <CayenneMQTTEthernet.h>

// Cayenne authentication info. This should be obtained from the Cayenne Dashboard.
char username[] = "";
char password[] = "";
char clientID[] = "";

#define PRESISTOR_VIRTUAL_CHANNEL 0

#define DISTANCE_VIRTUAL_CHANNEL 1

// Defines pins numbers for the HC-SR04 connections.
const int trigPin = 9;
const int echoPin = 10;
const int pResistor = A0;

long duration;
int distanceCm;
int value;
void setup() {
  
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
Serial.begin(9600);
pinMode(pResistor, INPUT);// Set pResistor - A0 pin as an input (optional)

 Cayenne.begin(username, password, clientID);

}

void loop() {
 // Cayenne.loop();
value = analogRead(pResistor);
    Serial.println(value);


digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distanceCm= duration*0.034/2;

      Serial.println(distanceCm);// if distance less than 0.5 meter and more than 0 (0 or less means over range)

delay(100);


if( (distanceCm < 68)&&(distanceCm > 10) && (value < 180))
 {
  Cayenne.virtualWrite(DISTANCE_VIRTUAL_CHANNEL, distanceCm, "prox", "cm");
  Cayenne.virtualWrite(PRESISTOR_VIRTUAL_CHANNEL,value);
} 

}


CAYENNE_OUT(PRESISTOR_VIRTUAL_CHANNEL)
{
   
   value = analogRead(pResistor);
   Serial.println(value);
   

Cayenne.virtualWrite(PRESISTOR_VIRTUAL_CHANNEL,value);
}

// This function is called at intervals to send HC-SR04 sensor data to Cayenne.
CAYENNE_OUT(DISTANCE_VIRTUAL_CHANNEL)
{
 digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distanceCm= duration*0.034/2;

Serial.println(distanceCm);// if distance less than 0.5 meter and more than 0 (0 or less means over range)

delay(100);
  // Send the distance value to Cayenne on proximity widget in centimeter.
  Cayenne.virtualWrite(DISTANCE_VIRTUAL_CHANNEL, distanceCm, "prox", "cm");
}