var logger = require('winston');

module.exports.start = function(channel){
  logger.info("Starting External temperature module");
  setInterval(function () {
    var temperature = readSensor();
    channel.emit('temperature_external', { temperature: temperature });
  }, 1000);

}

function readSensor() {
  // Read Sensor data
  // give random data for testing
  var high = 25;
  var low = 23;
  var temp =  Math.random() * (high - low) + low
  return temp
}