esp12

var wifi = require("Wifi");
wifi.connect("kura_gateway", {password:"iotsecurity"}, function(ap){ console.log("connected:", ap); });

console.log(wifi.getIP());
wifi.save();


var config = {
  frequency:1000,
  samplefrequency:200
};

var payload = {
  rate: 0,
};

var options={
 host: "198.41.30.241",
 username: "username",
 password: "password"
};

var mqtt = require("MQTT").connect(options);

mqtt.on('connected', function() {
  console.log("connected to broker");
});

setInterval(function() {
  payload.rate=analogRead(D5);
  console.log(payload);
  mqtt.publish('HEARTRATE', JSON.stringify(payload));
}, config.frequency);