c语言实现三盏灯的控制

#ifndef __LED_H__
#define __LED_H__

typedef struct
{
	volatile unsigned int MODER;
	volatile unsigned int OTYPER;
	volatile unsigned int OSPEEDER;
	volatile unsigned int PUPDR;
	volatile unsigned int IDR;
	volatile unsigned int ODR;
	volatile unsigned int BSRR;
}gpio_t;

#define GPIOE ((gpio_t*)0x50006000)
#define GPIOF ((gpio_t*)0x50007000)

void led1_init();
void led2_init();
void led3_init();

void led1_ctl(int flag);
void led2_ctl(int flag);
void led3_ctl(int flag);
#endif

 

#include "led.h"
void delay_ms(int ms)
{
	int i,j;
	for(i=0;i<ms;i++)
	{
		for(j=0;j<2000;j++);
	}
}
int main()
{
	*(unsigned int *)0x50000A28 |= (0x3<<4);
	led1_init();
	led2_init();
	led3_init();
    
 
    while(1)
    {
        //LED1亮
        led1_ctl(1);
        led2_ctl(0);
        led3_ctl(0);
        delay_ms(100);
        //LED2亮
        led1_ctl(0);
        led2_ctl(1);
        led3_ctl(0);
        delay_ms(100);

        //LED3亮
        led1_ctl(0);
        led2_ctl(0);
        led3_ctl(1);
        delay_ms(100);
    }

	

	return 0;
}

#include "led.h"

void led1_init()
{
	
	GPIOE->MODER &= (~(0x3<<20));
	GPIOE->MODER |= (0x1<<20);

	GPIOE->OTYPER &= (~(0x1<<10));
	GPIOE->OSPEEDER &= (~(0x3<<20));

	GPIOE->PUPDR &= (~(0x3<<20));
}
void led2_init()
{
	GPIOF->MODER &= (~(0x3<<20));
	GPIOF->MODER |= (0x1<<20);

	GPIOF->OTYPER &= (~(0x1<<10));
	GPIOF->OSPEEDER &= (~(0x3<<20));

	GPIOF->PUPDR &= (~(0x3<<20));
}
void led3_init()
{
	GPIOE->MODER &= (~(0x3<<16));
	GPIOE->MODER |= (0x1<<16);

	GPIOE->OTYPER &= (~(0x1<<8));
	GPIOE->OSPEEDER &= (~(0x3<<16));

	GPIOE->PUPDR &= (~(0x3<<16));
}
//LED1控制
void led1_ctl(int flag)
{
    if(flag==1)
    {
        GPIOE->ODR |= (0x1<<10);
    }
    else if(flag==0)
    {
        GPIOE->ODR &= (~(0x1<<10));
    }
}
//LED2控制
void led2_ctl(int flag)
{
    if(flag==1)
    {
        GPIOF->ODR |= (0x1<<10);
    }
    else if(flag==0)
    {
        GPIOF->ODR &= (~(0x1<<10));
    }
}
//LED3控制
void led3_ctl(int flag)
{
    if(flag==1)
    {
        GPIOE->ODR |= (0x1<<8);
    }
    else if(flag==0)
    {
        GPIOE->ODR &= (~(0x1<<8));
    }
}

实验效果