Tinkerbot 3.4: Reading the value of a switch to control an LED

Tinkerbot 3.4

const int LIMIT_SWITCH_PIN = 12;
const int LED_PIN = 13;

void setup() {
  pinMode(LIMIT_SWITCH_PIN, INPUT);
  digitalWrite(LIMIT_SWITCH_PIN,HIGH);
  
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  int switch_value = digitalRead(LIMIT_SWITCH_PIN);
  if (switch_value == HIGH) {
    digitalWrite(LED_PIN, HIGH);
  } else {
    digitalWrite(LED_PIN, HIGH);
    delay(100);
    digitalWrite(LED_PIN, LOW);
    delay(100);
  }
}