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<code c> #include <Arduino.h> #include <ittiot.h> #include “EmonLib.h” #include <Ticker.h>

#define ADC_PIN A0

EnergyMonitor emon1; Ticker adcTicker;

bool adcFlag;

uint16_t adcSampleCount;

void setAdcFlag() {

  adcFlag=true;

}

void iot_connected() {

  Serial.println("MQTT connected callback");
  iot.log("IoT current example!");

}

void setup() {

  Serial.begin(115200);
  Serial.println("Booting");
  iot.printConfig(); // print json config to serial
  iot.setup();

  emon1.current(ADC_PIN, iot.cfg->get<double>("stc"));             // Current: input pin, calibration.
  adcSampleCount = iot.cfg->get<uint16_t>("samples");

  adcTicker.attach(0.5, setAdcFlag);

}

void loop() {

iot.handle();

if(adcFlag)
{
    adcFlag = false;
    double val = emon1.calcIrms(adcSampleCount);
    String msg = String(val);
    iot.publishMsg("curr", msg.c_str());
    Serial.println(msg);
}

}

<code>