学习GPIOB_BSRR 流水,话不多说来代码

只看该作者 · 2019-11-1 14:24

//外设 peripheral

/*总线基址*/
#define PERIPH_BASE    ((unsigned int)0x40000000)
/*APB2基址*/
#define APB2PERIPH_BASE       (PERIPH_BASE+0x10000)
/*APB基址*/
#define AHBPERIPH_BASE (PERIPH_BASE+0x20000)

/*GPIO配置地址*/
#define GPIOB_BASE       (APB2PERIPH_BASE+0x0C00)
#define RCC_BASE       (AHBPERIPH_BASE+0x1000)

/*定义寄存器*/
#define RCC_APB2ENR             *(unsigned int*)(RCC_BASE+0x18)

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

#include&quot;stm32f10x.h&quot;

void delay(unsigned int j)
{
      while(j--);
}

int main()
{

      //设置RCC时钟
      RCC_APB2ENR |= ((1)<<3);

      //配置GPIO-PB0输出
      GPIOB_CRL |= ((1)<<(4*0));

      //配置GPIO-PB1输出
      GPIOB_CRL |= ((1)<<(4*1));

      //配置GPIO-PB5输出
      GPIOB_CRL |= ((1)<<(4*5));


      while(1)
      {

      /*GPIOB_ODR &= ~(1<<0);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      GPIOB_ODR |= (1<<0);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);

  GPIOB_ODR &= ~(1<<1);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      GPIOB_ODR |= (1<<1);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);


      GPIOB_ODR &= ~(1<<5);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      GPIOB_ODR |= (1<<5);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);*/


      //复位+置位寄存器操作
      GPIOB_BSRR |= (1<<0);
  GPIOB_BSRR |= (1<<1);
      GPIOB_BSRR |= (1<<5);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      GPIOB_BSRR |= (1<<16);
      GPIOB_BSRR |= (1<<1);
      GPIOB_BSRR |= (1<<5);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);


      GPIOB_BSRR |= (1<<0);
  GPIOB_BSRR |= (1<<1);
      GPIOB_BSRR |= (1<<5);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      GPIOB_BSRR |= (1<<0);
      GPIOB_BSRR |= (1<<17);
      GPIOB_BSRR |= (1<<5);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);


      GPIOB_BSRR |= (1<<0);
  GPIOB_BSRR |= (1<<1);
      GPIOB_BSRR |= (1<<5);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      GPIOB_BSRR |= (1<<0);
      GPIOB_BSRR |= (1<<1);
      GPIOB_BSRR |= (1<<21);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      delay(0xffff);
      }

}

void SystemInit()
{

}

学习GPIOB_BSRR 流水,话不多说来代码

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