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Please change the title of your post to represent what you are trying to achieve.
>> Por favor cambia el título de su puesto para representar lo que usted está tratando de lograr

​Paul (Moderator}

Sorry, Its my first post on the forum and the target of this post its just for introduce myself. Im trying to integrate emonlib on a ESP module but I opened a new post for this purpose. This title is ok? if you suggest me other title I'll change, no problem. 

Sorry for the inconvenience, Regards! :P

What about 'integrating emoncms into ESP modules'?
Then if someone else has a similar interest, they will find it easier to search, find and contribute to your post.

Paul

This are the two functions that I need to modify to get it working over an ESP. I'll work on it.

 

double EnergyMonitor::calcIrms(unsigned int Number_of_Samples)
{
 
   #if defined emonTxV3
   int SupplyVoltage=3300;
   #else
   int SupplyVoltage = readVcc();
   #endif

 
  for (unsigned int n = 0; n < Number_of_Samples; n++)
  {
    sampleI = analogRead(inPinI);

    // Digital low pass filter extracts the 2.5 V or 1.65 V dc offset,
   //  then subtract this - signal is now centered on 0 counts.
    offsetI = (offsetI + (sampleI-offsetI)/1024);
   filteredI = sampleI - offsetI;

    // Root-mean-square method current
    // 1) square current values
    sqI = filteredI * filteredI;
    // 2) sum
    sumI += sqI;
  }

  double I_RATIO = ICAL *((SupplyVoltage/1000.0) / (ADC_COUNTS));
  Irms = I_RATIO * sqrt(sumI / Number_of_Samples);

  //Reset accumulators
  sumI = 0;
//--------------------------------------------------------------------------------------       
 
  return Irms;
}

long EnergyMonitor::readVcc() {
  long result;
 
  //not used on emonTx V3 - as Vcc is always 3.3V - eliminates bandgap error and need for calibration http://harizanov.com/2013/09/thoughts-on-avr-adc-accuracy/

  #if defined(__AVR_ATmega168__) || defined(__AVR_ATmega328__) || defined (__AVR_ATmega328P__)
  ADMUX = _BV(REFS0) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1); 
  #elif defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__) || defined(__AVR_AT90USB1286__)
  ADMUX = _BV(REFS0) | _BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);
  ADCSRB &= ~_BV(MUX5);   // Without this the function always returns -1 on the ATmega2560 http://openenergymonitor.org/emon/node/2253#comment-11432
  #elif defined (__AVR_ATtiny24__) || defined(__AVR_ATtiny44__) || defined(__AVR_ATtiny84__)
  ADMUX = _BV(MUX5) | _BV(MUX0);
  #elif defined (__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__)
  ADMUX = _BV(MUX3) | _BV(MUX2);
   
  #endif

  #if defined(__AVR__)
  delay(2);                                        // Wait for Vref to settle
  ADCSRA |= _BV(ADSC);                             // Convert
  while (bit_is_set(ADCSRA,ADSC));
  result = ADCL;
  result |= ADCH<<8;
  result = READVCC_CALIBRATION_CONST / result;  //1100mV*1024 ADC steps http://openenergymonitor.org/emon/node/1186
  return result;
 #elif defined(__arm__)
  return (3300);                                  //Arduino Due
 #else
  return (3300);                                  //Guess that other un-supported architectures will be running a 3.3V!
 #endif
}

in video is my AC monitor with Wifi chip esp 8266
https://www.youtube.com/watch?v=yTG6C0ULMuc

you can see it more clearly here
https://www.youtube.com/watch?v=hPhFvFyTp6w

Can you share the code and the wiring with the Esp? are you using an arduino? I want to read directly from the Esp ADC pin (0-1v) I use actually on Arduino with a 220ohm burden resistor and I calibrate via software using 10 instead the 111.1 from the example on the library.

Regards