stm32点亮led不亮,求分析程序

ID:833125 · 发表于 2021-1-9 10:21

#define PERIPH_BASE    ((unsigned int)0x40000000)//

#define APB2PERIPH_BASE  (PERIPH_BASE + 0x00010000)

#define GPIOE_BASE    (APB2PERIPH_BASE + 0x0C00)

#define GPIOE_CRL                *(unsigned int*)(GPIOE_BASE+0x00)
#define GPIOE_CRH                *(unsigned int*)(GPIOE_BASE+0x04)
#define GPIOE_IDR                *(unsigned int*)(GPIOE_BASE+0x08)
#define GPIOE_ODR                *(unsigned int*)(GPIOE_BASE+0x0C)
#define GPIOE_BSRR       *(unsigned int*)(GPIOE_BASE+0x10)
#define GPIOE_BRR                *(unsigned int*)(GPIOE_BASE+0x14)
#define GPIOE_LCKR                *(unsigned int*)(GPIOE_BASE+0x18)

#define AHBPERIPH_BASE (PERIPH_BASE + 0x20000)

#define RCC_BASE                (AHBPERIPH_BASE + 0x1000)
#define RCC_APB2ENR       *(unsigned int*)(RCC_BASE+0x18)

#include "stm32f10x.h"
typedef unsigned int u32;

void SystemInit()
{

}

void delay(u32 i)
{
  while(i--);
}

int main()
{

      RCC_APB2ENR|=1<<6;
      GPIOE_CRL&=~(0x0f<<(4*5));
      GPIOE_CRL|=(0x03<<(4*5));
      GPIOE_BSRR=(0x01<<(16+5));
      while(1)
      {
                        GPIOE_BSRR=(0x01<<(16+5));
                        delay(0xffff);
                        GPIOE_BSRR=(0x01<<(5));
                        delay(0xffff);
      }
}