callback.ino

callback.ino

void callback(char* topic, byte* payload, unsigned int length) {

  String receivedtopic = topic;
  String receivedpayload ;
  
  for (int i = 0; i < length; i++) {
    receivedpayload += (char)payload[i];
  }
  
  Serial.print(receivedtopic);
  Serial.print(" => ");
  Serial.println(receivedpayload);  

  if ( receivedtopic == "inside") {
    lcd.setBacklight(HIGH);
    lcd.display();
    lcd.home (); // set cursor to 0,0
    lcd.print ("Inside is: ");
    lcd.setCursor (13, 0);
    lcd.print(receivedpayload);
  }

  if ( receivedtopic == "outside") {
    lcd.setCursor (0, 1);
    lcd.print ("Outside is: ");
    lcd.setCursor (13, 1);
    lcd.print(receivedpayload);
  }
}