通过寄存器结构体指针来控制寄存器

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Spikess|

楼主 | 2020-4-24 16:18 | 只看该作者回帖奖励

|倒序浏览 |阅读模式

控制, 寄存器, gp, IO, GPIO

程序编写完过后，没有报错。但是下载到开发版中，灯不亮。看了一下代码，基本和教程上的一样。但是开发板没反应。求助啊！！
找了好久的错，没找到。

#include &quot;stm32f10x.h&quot;

int  main(void)
{
RCC_APB2ENR |= (1<<3);/*GPIO时钟*/
      GPIOB->CRL &= ~ (0x0f<<(4*0));
      GPIOB->CRL |= ((1)<<(4*0));
      GPIOB->ODR &= ~(1<<0);
}
void SystemInit(void)
{

}

#define  PERIPH_BASE ((unsigned int)0x40000000)
#define  APB2PERIPH_BASE PERIPH_BASE+0X10000
#define  AHBPERIPH_BASE PERIPH_BASE+0X20000

#define  RCC_BASE    AHBPERIPH_BASE +0X1000
#define  GPIOB_BASE APB2PERIPH_BASE  +0X0C00

#define  RCC_APB2ENR *(unsigned int*)(RCC_BASE +0X18)

#define  GPIOB_CRL    *(unsigned int*)(GPIOB_BASE +0X00)
#define  GPIOB_CRH    *(unsigned int*)(GPIOB_BASE +0X04)
#define  GPIOB_ODR    *(unsigned int*)(GPIOB_BASE +0X0C)
#define  GPIOB_BSRR    *(unsigned int*)(GPIOB_BASE +0X10)
#define  GPIOB_BRR    *(unsigned int*)(GPIOB_BASE +0X14)

typedef  unsigned  int  uint32_t;
typedef  unsigned  short  uint16_t;

typedef  struct
{ uint32_t  CRL;
uint32_t  CRH;
uint32_t  IDR;
uint32_t  ODR;
uint32_t  BSRR;
uint32_t  BRR;
uint32_t  LCKR;
}  GPIO_TypeDef;

#define GPIOB  ((GPIO_TypeDef*)GPIOB_BASE)

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