void Delay(vu32 nCount) {
  for(; nCount != 0; nCount--);
  }
/*----------------------------------------------------------*\
 | MIAN ENTRY                                               |
\*----------------------------------------------------------*/
int main (void) {
  stm32_Init ();                                  // STM32 setup
  for(;;) {
    GPIOB->ODR &= ~LED;                           // switch on LED
 Delay(2000000);
    GPIOB->ODR |=  LED;                           // switch off LED
 Delay(2000000);
    }
  }