void setup() {
  Serial.begin(9600);
  while(!Serial){
    ;
  }
  Serial.println("ready");
}
//-------------------------------------------
String text="";
//-------------------------------------------
void loop() {
  while (!textReady){
    parse();
  }
  Serial.println(text);
  textReady = false;
  text = "";
}

//-------------------------------------------
//saves all text until carridge return in "txt" variable
//-------------------------------------------
void parse(){
  while(Serial.available()){
    char tmp = Serial.read();
    if (tmp=='\r'){
      //Serial.println(text);
      textReady = true;
    }
    text += (char)tmp;
  }
}