//8888 EmonLibrary examples openenergymonitor.org, Licence GNU GPL V3
#include <LiquidCrystal_I2C.h>
#include "EmonLib.h"                   // Include Emon Library
int lcdColumns = 32;
int lcdRows = 2;
LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows);  

EnergyMonitor emon1;                   // Create an instance

void setup() {  
  lcd.init();                     
  lcd.backlight();
  lcd.cursor_off();
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("AC Power Meter");
  delay(1000);
  emon1.voltage(A3,366, 3.6);
  emon1.current(A6, 1.15999);            // Current: input pin, calibration.
  lcd.clear();
}

void loop() {
  lcd.setCursor(0,0);
  lcd.print("Sequence: I+V,");
  lcd.setCursor(0,1);
  lcd.print("Power(RMS),");
  lcd.setCursor(16,0);
  lcd.print("PowerFactor,");
  delay(2000);

  emon1.calcVI(20, 4000); 
  double Vrms = emon1.Vrms;
  if(Vrms<10){Vrms=0;};
  double Irms = emon1.calcIrms(4000);  // Calculate Irms only
  double Phase = emon1.powerFactor;
  if(Vrms<10 || Irms<0.009){Phase = 0;};
  double apparentpower=(Irms*Vrms);

  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Vrms:");
  lcd.setCursor(6,0);
  lcd.print(Vrms);
  lcd.setCursor(14,0);
  lcd.print("V");
	
  lcd.setCursor(0,1);
  lcd.print("Irms:");
  lcd.setCursor(6,1);
  lcd.print(Irms);
  lcd.setCursor(11,1);
  lcd.print("A");
  delay(2000);
  lcd.clear();


  lcd.setCursor(0,0);
  lcd.print("Power:");
  lcd.setCursor(7,0);
  lcd.print(apparentpower);
  lcd.setCursor(13, 0);
  lcd.print(" W");

 
  lcd.setCursor(0,1);
  lcd.print("Pfactor:");
  lcd.setCursor(9,1);
  lcd.print(Phase);
  delay(2000);
  lcd.clear();

}