int muxSig = 4;
int muxFlag3 = 12;
int muxFlag2 = 11;
int muxFlag1 = 10;
int muxFlag0 = 9;

void setup() {
  pinMode(muxSig, OUTPUT);
  pinMode(muxFlag3, OUTPUT);
  pinMode(muxFlag2, OUTPUT);
  pinMode(muxFlag1, OUTPUT);
  pinMode(muxFlag0, OUTPUT);
  Serial.begin(9600);
}
void loop() {
  // Serial.println("inSig");
  // if(Serial.available()){
  //   int inSig = Serial.parseInt();
  //   Serial.println(inSig);
  //   if(inSig == 0){
  //     setSignal(0);
  //   }else{
  //     setSignal(inSig);
  //   }
  //   digitalWrite(muxSig, HIGH);
  //   delay(500);
  //   digitalWrite(muxSig, LOW);
  //   delay(500);
  // }
  // delay(100);
  for(int i = 0; i<16; i++){
    setSignal(0);
    digitalWrite(muxSig, HIGH);
    delay(500);
    digitalWrite(muxSig, LOW);
    delay(500);
  }
}

void setSignal(byte signal){
  Serial.print(bitRead(signal,0));
  Serial.print(bitRead(signal,1));
  Serial.print(bitRead(signal,2));
  Serial.print(bitRead(signal,3));
  digitalWrite(muxFlag0, bitRead(signal,0));
  digitalWrite(muxFlag1, bitRead(signal,1));
  digitalWrite(muxFlag2, bitRead(signal,2));
  digitalWrite(muxFlag3, bitRead(signal,3));
  return;
}