/*
    Dieses Programm verwendet
    - die LED am Pin 13
*/

void fv_blinken(unsigned int ui_LED_an, unsigned int ui_LED_aus);

#define KURZ 500
#define LANG 2*KURZ
#define GROSSEPAUSE 2*LANG

void setup()
{
  // initialize digital pin 13 as an output.
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop()
{
  fv_blinken(KURZ, KURZ);  //3x kurz
  fv_blinken(LANG, KURZ);  //3x lang
  fv_blinken(KURZ, KURZ);  //3x kurz
  delay(GROSSEPAUSE);            // Grosse Pause
}

void fv_blinken(unsigned int ui_LED_an, unsigned int ui_LED_aus)
{
  for (byte by_i = 0; by_i <= 2; by_i++)
  {
    digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
    delay(ui_LED_an);                  // wait
    digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
    delay(ui_LED_aus);                 // wait
  }
}