#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stm32c0xx.h>
#include <stm32c0xx_hal.h>

void USER_GPIOA_Init( void ){
  // Enable GPIOA clock
	RCC->IOPENR	  = RCC->IOPENR   |  ( 0x1UL <<  0U );
  // Configure PA5 as output push pull
  GPIOA->BSRR   =	0x1UL << 21U; // Reset PA5 low to turn off LED
  GPIOA->PUPDR  = GPIOA->PUPDR  & ~( 0x3UL << 10U ); // Clear pull-up/pull-down bits for PA5
  GPIOA->OTYPER = GPIOA->OTYPER & ~( 0x1UL <<  5U ); // Clear output type bit for PA5
  GPIOA->MODER  = GPIOA->MODER  & ~( 0x2UL << 10U ); // Set PA5 as output
  GPIOA->MODER  = GPIOA->MODER  |  ( 0x1UL << 10U ); // Set PA5 as output
}

void USER_GPIOD_Init( void ){
  // Enable GPIOA clock
	RCC->IOPENR	  = RCC->IOPENR   |  ( 0x1UL <<  3U );
  // Configure PA5 as output push pull
  GPIOD->BSRR   =	0x1UL << 16U; // Reset PA5 low to turn off LED
  GPIOD->PUPDR  = GPIOD->PUPDR  & ~( 0x3UL << 0U ); // Clear pull-up/pull-down bits for PA5
  GPIOD->OTYPER = GPIOD->OTYPER & ~( 0x1UL <<  0U ); // Clear output type bit for PA5
  GPIOD->MODER  = GPIOD->MODER  & ~( 0x2UL << 0U ); // Set PA5 as output
  GPIOD->MODER  = GPIOD->MODER  |  ( 0x1UL << 0U ); // Set PA5 as output
}
int main(void)
{
  HAL_Init();
  USER_GPIOA_Init();
  USER_GPIOD_Init();

  while (1)
   {
         GPIOA->ODR ^= (1<<5);
         GPIOD->ODR ^= (1<<0);
         HAL_Delay(500);
         
           
   }
 

  return 0;
}