first commit

voltage_and_current/voltage_and_current.ino

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+// EmonLibrary examples openenergymonitor.org, Licence GNU GPL V3
+
+#include "EmonLib.h"             // Include Emon Library
+EnergyMonitor emon1;             // Create an instance
+EnergyMonitor emon2;             // Create an instance
+
+const int numReadings  = 10;
+const int numIndex     = 2;
+float last_values[numIndex][numReadings -1];
+int readIndex[numIndex];
+long total[numIndex];
+
+void setup()
+{  
+  Serial.begin(9600);
+ //analogReference(EXTERNAL);
+ 
+//  float vcc = readVcc() / 1000.0;
+//  Serial.print(vcc);
+  emon1.voltage(A2, 640 , 2.6);  // Voltage: input pin, calibration, phase_shift
+  emon1.current(A1, 56);       // Current: input pin, calibration.
+  //emon2.voltage(A2, 320, 7);  // Voltage: input pin, calibration, phase_shift
+  emon2.current(A0, 5); 
+
+  for (int i = 0; i<numIndex; i++) {
+    readIndex[i] = 0;
+    for (int j = 0; j<numReadings; j++) {
+      last_values[i][j] = 0;
+    }
+  }
+
+}
+
+int bcl = 0;
+void loop()
+{ 
+  bcl++;
+    // Calculate all. No.of half wavelengths (crossings), time-out
+//  delay(200);
+  emon1.calcVI(20,200);         // Calculate all. No.of half wavelengths (crossings), time-out
+  emon2.calcVI(20,200);  
+
+  //emon1.serialprint();           // Print out all variables (realpower, apparent power, Vrms, Irms, power factor)
+  
+  float puissance_reelle1 = emon1.realPower;   // 1 creation de la variable flottante "puissance reelle" qui existe dans la librairie sous "emon1.realPower"
+ 
+  float verif_voltage    = emon1.Vrms;        // 1 creation de la variable "volts moyen" (mesurable avec un voltmètre pour l'etalonnage)
+  float verif_ampere     = emon1.Irms;        // 1 creation de la variable "Ampères Moyen" (mesurable avec une pince ampèremétrique pour l'etalonnage))
+  float Cos_phi          = emon1.powerFactor;
+
+  //Serial.print("Conso  ");
+
+  if (bcl > 5) {
+//      float vcc = readVcc() / 1000.0;
+//  Serial.print(vcc);
+//  Serial.print(" vcc ");
+  Serial.print(verif_voltage);                  // 1 envoyer vers l'ordinateur la valeur "verif_voltage (Vrms)"
+  Serial.print(" Vc  ");                         // 1 envoyer vers l'ordinateur le caractère "V"
+//  Serial.print(verif_ampere);                   // 1 envoyer vers l'ordinateur la valeur "verif_voltage (Vrms)"                    
+//  Serial.print(" Ac ");                          // 1 envoyer vers l'ordinateur le caractère "A"
+  Serial.print(puissance_reelle1);
+  Serial.print(" Wrc ");
+  Serial.print(emon1.apparentPower);
+  Serial.print(" Wac ");
+  Serial.print(emon1.calcIrms(5440) * 230);
+  Serial.print(" WI ");
+  Serial.print(Cos_phi);                   // 1 envoyer vers l'ordinateur la valeur "verif_voltage (Vrms)"                    
+  Serial.print(" cos ");  
+
+  //Serial.print("Solaire ");
+//  Serial.print(emon2.Vrms);                  // 1 envoyer vers l'ordinateur la valeur "verif_voltage (Vrms)"
+//  Serial.print(" V  ");                         // 1 envoyer vers l'ordinateur le caractère "V"
+//  Serial.print(emon2.Irms);                   // 1 envoyer vers l'ordinateur la valeur "verif_voltage (Vrms)"                    
+//  Serial.print(" A ");                          // 1 envoyer vers l'ordinateur le caractère "A"
+  Serial.print(smooth(1,emon2.realPower));
+  Serial.print(" Wr ");
+  Serial.print(emon2.apparentPower);
+  Serial.print(" Wa ");
+  Serial.print(emon2.powerFactor);                   // 1 envoyer vers l'ordinateur la valeur "verif_voltage (Vrms)"                    
+  Serial.println(" cos ");
+//  Serial.print(emon1.calcIrms(5440) * 230);  // Calculate Irms only
+//  Serial.print(" Wc ");
+//  Serial.print(emon2.calcIrms(5440) * 230);  // Calculate Irms only
+//  Serial.println(" Ws ");
+  }
+  else {
+   //Serial.print("."); 
+   delay(200);
+  }
+  
+}
+
+float smooth(int index, float last_value) { /* function smooth */
+  ////Perform average on sensor last_values
+  float average;
+  // subtract the last reading:
+  total[index] = total[index] - last_values[index][readIndex[index]];
+
+  // read the sensor:
+  last_values[index][readIndex[index]] = last_value;
+  // add value to total:
+  total[index] = total[index] + last_values[index][readIndex[index]];
+  // handle index
+  readIndex[index] = readIndex[index] + 1;
+  if (readIndex[index] >= numReadings) {
+    readIndex[index] = 0;
+  }
+  float tot = 0;
+  for (int j = 0; j< numReadings; j++) {
+//    Serial.print(last_values[index][j]);
+//    Serial.print(" ");
+    tot +=last_values[index][j];
+  }
+
+  //Serial.println("");
+  // calculate the average:
+  average = tot / numReadings; //al[index] / numReadings;
+
+  return average;
+}
+//--------------------------------------------------------------------------------------------------
+// Read current supply voltage
+//--------------------------------------------------------------------------------------------------
+// long readVcc() {
+//   bitClear(PRR, PRADC); ADCSRA |= bit(ADEN); // Enable the ADC
+//   long result;
+//   // Read 1.1V reference against Vcc
+//   #if defined (__AVR_ATtiny24__) || defined(__AVR_ATtiny44__) || defined(__AVR_ATtiny84__)
+//    ADMUX = _BV(MUX5) | _BV(MUX0); // For ATtiny84
+//   #elif defined (__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__)
+//    ADMUX = _BV(MUX3) | _BV(MUX2);
+//   #else
+//    ADMUX = _BV(REFS0) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);  // For ATmega328
+//   #endif
+//   // ADCSRB = 0;
+//   
+//   delay(2); // Wait for Vref to settle
+//   ADCSRA |= _BV(ADSC); // Convert
+//   while (bit_is_set(ADCSRA,ADSC));
+//   result = ADCL;
+//   result |= ADCH<<8;
+//   result = 1126400L / result; // Back-calculate Vcc in mV
+//   // ADCSRA &= ~ bit(ADEN); bitSet(PRR, PRADC); // Disable the ADC to save power
+//   
+//   // analogReference(DEFAULT);
+//    
+//   return result; // Vcc in millivolts
+//}