
/**
 * MQTT callback to process received messages
 */
void callback(char* topic, byte* payload, unsigned int length) {

  int strcomparison = strcmp(topic, mqttTopicTemperature);
  if (strcomparison == 0) {
    Serial.println("Matched Temperature Topic");
        if (payload[2] == '.') {
            length = 4;
            }
        for (int i=0;i 0) {
    int inChar = Serial.read();
    if (isDigit(inChar)) {
      // convert the incoming byte to a char
      // and add it to the string:
      inString += (char)inChar;
    }
    // if you get a newline, print the string,
    // then the string's value:
    if (inChar == '\n') {
      Serial.print("Value:");
      Serial.println(inString.toInt());
      Serial.print("String: ");
      Serial.println(inString);
      // clear the string for new input:
      inString = "";
    }
  }
}