//#define CAYENNE_DEBUG         // Uncomment to show debug messages
#define CAYENNE_PRINT Serial  // Comment this out to disable prints and save space
#include <CayenneEthernet.h>

#include <Wire.h>
#include <Adafruit_INA219.h>
Adafruit_INA219 ina219;

float shuntvoltage = 0;
float busvoltage = 0;
float current_mA = 0;
float current_A = 0;
float loadvoltage = 0;
float power_W = 0;


// Cayenne authentication token. This should be obtained from the Cayenne Dashboard.
char token[] = "token";

void setup()
{
  Serial.begin(9600);
  Cayenne.begin(token);
  uint32_t currentFrequency;
  ina219.begin();
}

void loop()
{
  Cayenne.run();
  
  shuntvoltage = ina219.getShuntVoltage_mV();
  busvoltage = ina219.getBusVoltage_V();
  current_mA = ina219.getCurrent_mA();
  loadvoltage = busvoltage + (shuntvoltage / 1000);
  current_A = current_mA / 1000;
  power_W = current_A * loadvoltage; 
}


CAYENNE_OUT(V0)
{
  Cayenne.virtualWrite(V0, loadvoltage);
}
CAYENNE_OUT(V1)
{
  Cayenne.virtualWrite(V1, current_A);
}
CAYENNE_OUT(V2)
{
  Cayenne.virtualWrite(V2, power_W);
}