蜂鸣器和风扇

#include "feng.h"

//延时函数
void delay_ms(int ms)
{
 int i,j;
 for(i = 0; i < ms;i++)
  for (j = 0; j < 1800; j++);
}

void all_init()
 {
    RCC |=(0x1<<4);
    RCC	|=(0x1<<2);

    //shan
    GPIOE->moder &= (~(0X3<<18));
    GPIOE->moder |= (0X1<<18);
    GPIOE->otyper &=(~(0X1<<9));
    GPIOE->ospeedr &= (~(0X3<<18));
    GPIOE->pupdr &= (~(0X3<<18));
     //ming
    GPIOB->moder &= (~(0X3<<12));
    GPIOB->moder |= (0X1<<12);
    GPIOB->otyper &=(~(0X1<<6));
    GPIOB->ospeedr &= (~(0X3<<12));
    GPIOB->pupdr &= (~(0X3<<12));
 }

void all_do()
{
 
    GPIOE->odr |=(0X1<<9);
    GPIOB->odr &= (~(0X1<<6));
    delay_ms(5000);
    
    GPIOE->odr &=(~(0X1<<9));
    GPIOB->odr |=(0X1<<6);
    delay_ms(5000);

}

#ifndef __FENG_H__
#define __FENG_H__

//定义寄存器组织结构体
typedef struct{
    unsigned int moder;
    unsigned int otyper;
    unsigned int ospeedr;
    unsigned int pupdr;
    unsigned int idr;
    unsigned int odr;
}g;
//定义GPIOE和GPIOB
#define GPIOE ((g *)0X50006000)
#define GPIOB ((g *)0X50003000)
#define RCC (*(volatile unsigned int *)0X50000A28)
void delay_ms(int ms);
void all_init();
void all_do();
#endif

#include "feng.h"
int main()
{
	all_init();
	while(1)
	{
		all_do();
	}
	return 0;
}