//  This example code is in the public domain. Gleb Bulygin

//  http://www.arduino.cc/en/Tutorial/Fade

int buttonStatus = 0;
const int buttonPin = 7;
const int ledpin = 8;           // the PWM pin the LED is attached to
int brightness = 0;    // how bright the LED is
int fadeAmount = 2;    // how many points to fade the LED by

// the setup routine runs once when you press reset:
void setup() {
  // declare pin 8 to be an output:
  pinMode(ledpin, OUTPUT);
  pinMode(buttonPin, INPUT);
}

// the loop routine runs over and over again forever:
void loop() {
  buttonStatus = digitalRead(buttonPin);


  if (buttonStatus == LOW) {
    // set the brightness of pin 8:
    analogWrite(ledpin, brightness);
    // change the brightness for next time through the loop:
    brightness = brightness + fadeAmount;

    // reverse the direction of the fading at the ends of the fade:
    if (brightness <= 0 || brightness >= 255) {
      fadeAmount = -fadeAmount;
    }
    // wait for 30 milliseconds to see the dimming effect
    delay(30);
  }
  else {
    digitalWrite(ledpin, HIGH);
    delay (50);
    //turn LED off
    digitalWrite(ledpin, LOW);
    delay (50);
  }
}