#include <Arduino.h>

int LED = 2;
int BTN = 4;
int led;

void setup() {
  pinMode(LED, OUTPUT);
  pinMode(BTN, INPUT);
  led = 1;
  Serial.begin(9600);
  Serial.println("Hello, I'm in a terminal!");
  Serial.println();
}

void loop() {
  if (Serial.available() > 0) {
    char input = Serial.read();
    Serial.println(input);
    if (input == 255) {
      led = 1;
    } else if (input == 0) {
      led = 0;
    }
  }
  /*
  if (digitalRead(BTN)) {
    led = 1;
    //Serial.println("HIGH");
  }
  else {
    led = 0;
    //Serial.println("LOW");
  }
  */
  if (led) {
    digitalWrite(LED, HIGH); 
  }
  else{
    digitalWrite(LED, LOW);
  }
  
}