/*
  Blink

  Turns an LED on for one second, then off for one second, repeatedly.

  Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
  
  it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
  the correct LED pin independent of which board is used.
  If you want to know what pin the on-board LED is connected to on your Arduino
  model, check the Technical Specs of your board at:
  https://www.arduino.cc/en/Main/Products

  modified 8 May 2014
  by Scott Fitzgerald
  modified 2 Sep 2016
  by Arturo Guadalupi
  modified 8 Sep 2016
  by Colby Newman

  This example code is in the public domain.

  https://www.arduino.cc/en/Tutorial/BuiltInExamples/Blink
*/
/*
//CODE FOR ECHO
void setup() {
 // Serial.swap(1);
   Serial.begin(9600);
}

#define max_buffer 25

void loop() {
   static char chr;
   static char buffer[max_buffer] = {0};
   static int index;
   if (Serial.available()) {
      chr = Serial.read();
      Serial.print("hello.D21E.echo: you typed \"");
      buffer[index++] = chr;
      if (index == (max_buffer-1))
         index = 0;
      Serial.print(buffer);
      Serial.println("\"");
    }
}



//CODE FOR LIGHT TO FLICKER
const int ledPin=2;
void setup(){
  pinMode(ledPin, OUTPUT);
  
}
void loop(){
  digitalWrite(ledPin, HIGH);
  delay(1000); 
  digitalWrite(ledPin, LOW);
  delay(1000); 

}

*/

//CODE FOR BUTTON TO TURN ON LIGHT
const int BUTTON =3;
const int LED = 2;
int BUTTONstate = 0;

void setup()
{
  /*put it as input, so that it can read the state of the button*/
  pinMode(BUTTON, INPUT_PULLUP);
  pinMode(LED, OUTPUT);
  Serial.begin(9600);
}

void loop()
{
  
  //read the buttonstae
//  BUTTONstate = digitalRead(BUTTON);

  if (digitalRead(BUTTON) ==LOW)
  {
    Serial.println("LOW");
//    BUTTONstate!=0
    digitalWrite(LED, HIGH);
    //Serial.printf("hello");
  } 
  else{
    digitalWrite(LED, LOW);
    Serial.println("HIGH");
  }
}