STM32 VL Discovery ile ARM Programlama - GPIO Register Kullanımı

Led Yakma kodları ve videosu;

#include "stm32f10x.h"

void delay(uint32_t time)
{
 time=time*2318;
 while(time)
  time--;
}
int main()
{
 RCC->APB2ENR |= 1<<4;
 GPIOC->CRH   |=0x00000002;

 while(1)
 {
  GPIOC->BSRR= 1<<8;
  delay(1000);
  GPIOC->BRR = 1<<8;
 }
}

Buton kullanma kodlar ve videosu

#include "stm32f10x.h"                  // Device header

_Bool x=0;
int main()
{
 RCC->APB2ENR |= (1 << 2);                /* Enable GPIOA clock            */
 RCC->APB2ENR |= (1 << 4);                /* Enable GPIOC clock            */  
 
 GPIOA->CRL   &= 0x00000000;  // Set to Zero Port A    
 GPIOA->CRL   |= 0x00000008;  // Set as a input PA0    
 
 GPIOC->CRH   = 0x00000022;  //    Set as a output PC8 & PC9
 while (1)
  { 
  x=(GPIOA->IDR & 0x0000001);
  
      if(x) // PA0 ON (Led4) //
      {        
          GPIOC->BSRR  = 1<<8;  //  LED ON PC8
      }
  else
  {
   GPIOC->BRR  = 1<<8;  //  LED OFF PC8
  }
   
 } 
 
}