/*
  Measuring Current Using ACS712
*/
#include "math.h"
const int analogIn = A0;
int mVperAmp = 185; // 185 pour 5A, use 100 for 20A Module and 66 for 30A Module
int RawValue= 0;
int ACSoffset = 2500; 
double  mp_offset = 0.040;
double Voltage = 0;
double Amps = 0;

void setup(){ 
 Serial.begin(9600);
 pinMode(A0, INPUT);
}

void loop(){
  
 int i = 0;
 RawValue = 0;
 // Somme du courant alternatif pendant 20 ms ==> 50hz
 // Détermination du max et max pour hauteur de crete
 int vmin = 1024;
 int vmax = 0;
 for (i = 0; i < 20; i++) {
   int value = analogRead(analogIn);
   if (value >= 0) {
   RawValue += value;
   vmax = max(value,vmax);
   vmin = min(value,vmin);
   } else {
     i--;
   }
   delay(1); 
   
 }
// Serial.print("Raw Value = " ); 
// Serial.print(RawValue);
 Serial.print("min = " ); 
 Serial.print(vmin);
 Serial.print(" max = " ); 
 Serial.print(vmax);
 
// Serial.print(" i =" );
// Serial.print(i); 
// RawValue = RawValue / i;
 
 
 // Tension continue
 // Voltage = (RawValue / 1023.0) * 5000; // Gets you mV
 // Amps = ((Voltage - ACSoffset) / mVperAmp);
 
 
 // La valeur maxi * racine carrée de 2 pour obtenir la tension "réelle"
 // La tension efficace pour l'effet Hall étant réduite d'un facteur 0,707
 Voltage = ((vmax - vmin) / 430.0) * 5000;
 
 Amps = max(5.5 * (vmax - vmin) / 473.0 -0.0580, 0.0); // <= pour le bruit
 
 
// Serial.print(" Raw Value = " ); // shows pre-scaled value 
// Serial.print(RawValue); 
 Serial.print("\t mV = "); // shows the voltage measured 
 Serial.print(Voltage,3); // the '3' after voltage allows you to display 3 digits after decimal point
 Serial.print("\t Amps = "); // shows the voltage measured 
 Serial.print(Amps,3); // the '3' after voltage allows you to display 3 digits after decimal point
 Serial.print("\t Watt = "); // shows the voltage measured 
 Serial.print(Amps * 220,3);
 Serial.print("\t WattH = "); // shows the voltage measured 
 Serial.println(Amps * 220 / 1200,3);
 
 
 delay(2500); 
 
}