//#include pgmspace.h
#define BOARD_LED 13
const int TasterPin = 12;

// declarations
int a = 1000;
volatile int i =30;

void setup()   // Einmalige Ausführung => Initialisierungen...
{
    pinMode(BOARD_LED, OUTPUT);  // 
    pinMode(TasterPin, INPUT);  // 
}

void loop()
{
    while(digitalRead(TasterPin)==0)
    {
    digitalWrite(BOARD_LED, HIGH); //Output Bitwise High
    a=1000;
    delay(a);                //Wait...
    digitalWrite(BOARD_LED, LOW); //Output Bitwise High
    i=1000;
    delay(i);                //Wait...
    }
    digitalWrite(BOARD_LED, HIGH); //Output Bitwise High
}