Ejemplo tres_2 para Arduino

char inChar;
String string="";

void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
  inChar=Serial.read();
string.reserve(200);
}

void loop() {
  // put your main code here, to run repeatedly:
if(Serial.available()){
  //string+=inChar;
  //Serial.print(string);
  if(inChar=='*'){
    Serial.print("Lectura: ");
    Serial.print(inChar);
    //string="";
    n=Serial.parseInt();
    if(inChar=='*' &&& n=123){
      }
    }
  }
}