/* Blink LED when the button is pressed 
 * ------------------------ 
 */ 
 
int ledPin = 13; // choose the pin for the LED 
int inPin = 7;   // choose the input pin 
                 // (for a pushbutton) 
int val = 0;     // variable for reading the pin status 
void setup() { 
  pinMode(ledPin, OUTPUT);  // declare LED as output 
  pinMode(inPin, INPUT);    // declare pushbutton as input 
} 
void loop(){ 
  val = digitalRead(inPin);     // read input value 
  // check if the input is HIGH (button released) 
  if (val == HIGH) {            
    digitalWrite(ledPin, HIGH);  // turn LED ON 
  } else { 
    // blink the LED  
    digitalWrite(ledPin, HIGH); 
    delay(200); 
    digitalWrite(ledPin, LOW); 
    delay(200); 
  } 
}