#define led_pin 32
#define button_pin 33

void setup() {
  // put your setup code here, to run once:
  pinMode(led_pin,OUTPUT);
  pinMode(button_pin, INPUT_PULLUP);
  Serial.begin(9600);

}

bool button_up = true;

void loop() {
  // put your main code here, to run repeatedly:
  if(Serial.available()){
    char s = Serial.read();
    if (s == '1'){
      digitalWrite(led_pin,HIGH);
    }else if (s == '0'){
      digitalWrite(led_pin, LOW);
    }
  }

  /**if((digitalRead(button_pin) == LOW) && button_up){
    digitalWrite(led_pin,HIGH);
    Serial.println("down");
    button_up = false;
  }else if((digitalRead(button_pin) == HIGH) && !button_up){
    digitalWrite(led_pin,LOW);
    Serial.println("up");
    button_up = true;
  }
  delay(500);**/
}