ARM, RISC-V контроллеры

int main(void)
{
  uint32_t u32High = 0x00000001;
  uint32_t u32Low  = 0x00010000;
	
	
 SET_BIT(RCC->IOPENR,RCC_IOPENR_GPIOAEN); // разрешим GPIOA
 MODIFY_REG(GPIOA->MODER, GPIO_MODER_MODE0_1,GPIO_MODER_MODE0_0); // PIN A0 на выход
	
 while(1)
 {
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low; 
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low; 
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low; 
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low; 
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low;
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low; 
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low; 
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low; 
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low; 
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low;	
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low; 
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low; 
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low; 
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low; 
   GPIOA->BSRR = u32High;
   GPIOA->BSRR = u32Low;
 }
}