12.25

led.c

#include "led.h"
void all_led_init()
{
    RCC_GPIO |= (0X3<<4);//时钟使能
    GPIOE_MODER &=(~(0X3<<20));//设置PE10输出
    GPIOE_MODER |= (0X1<<20);
    //设置PE10为推挽输出
    GPIOE_OTYPER &=(~(0x1<<10));
    //PE10为低速输出
    GPIOE_OSPEEDR &= (~(0x3<<20));
    //设置无上拉下拉
    GPIOE_PUPDR &= (~(0x3<<20));
 
    //LED2
    GPIOF_MODER &=(~(0X3<<20));//设置Pf10输出
    GPIOF_MODER |= (0X1<<20);
    //设置Pf10为推挽输出
    GPIOF_OTYPER &=(~(0x1<<10));
    //Pf10为低速输出
    GPIOF_OSPEEDR &= (~(0x3<<20));
    //设置无上拉下拉
    GPIOF_PUPDR &= (~(0x3<<20));
 
    //LED3
    GPIOE_MODER &=(~(0X3<<16));//设置PE8输出
    GPIOE_MODER |= (0X1<<16);
    //设置PE8为推挽输出
    GPIOE_OTYPER &=(~(0x1<<8));
    //PE8为低速输出
    GPIOE_OSPEEDR &= (~(0x3<16));
    //设置无上拉下拉
    GPIOE_PUPDR &= (~(0x3<<16));
}
void led1_on()
{
    GPIOE_ODR |= (0x1<<10);
}
 
void led1_off()
{
    GPIOE_ODR &= (~(0x1<<10));
}
void led2_on()
{
    GPIOF_ODR |= (0x1<<10);
}
 
void led2_off()
{
    GPIOF_ODR &= (~(0x1<<10));
}
void led3_on()
{
    GPIOE_ODR |= (0x1<<8);
}
 
void led3_off()
{
    GPIOE_ODR &= (~(0x1<<8));
}

led.h

#ifndef __LED_H_
#define __LED_H_

#define RCC_GPIO     (*(unsigned int *)0x50000a28)
#define GPIOE_MODER     (*(unsigned int *)0x50006000)
#define GPIOF_MODER     (*(unsigned int *)0x50007000)
#define GPIOE_OTYPER     (*(unsigned int *)0x50006004)
#define GPIOF_OTYPER     (*(unsigned int *)0x50007004)
#define GPIOF_OSPEEDR     (*(unsigned int *)0x50007008)
#define GPIOE_OSPEEDR     (*(unsigned int *)0x50006008)
#define GPIOF_PUPDR      (*(unsigned int *)0x5000700C)
#define GPIOE_PUPDR     (*(unsigned int *)0x5000600C)
#define GPIOE_ODR     (*(unsigned int *)0x50007014)
#define GPIOF_ODR     (*(unsigned int *)0x50006014)

void led1_on();
void led2_on();
void led3_on();
void led1_off();
void led2_off();
void led3_off();
 void delay(int ms);
 void all_led_init();
#endif

uart4.h

#ifndef __UART4_H_
#define __UART4_H_
#include "stm32mp1xx_rcc.h"
#include "stm32mp1xx_gpio.h"
#include"stm32mp1xx_uart.h"
void uart4_config();
void putchar(char a);
char getchar();
int cmp(char  *s1,char *s2);
void puts(char *s);
void gets(char *s);
#endif

#include"uart4.h"

#include "led.h"





int main()

{

	char st[100];



	all_led_init();

	uart4_config();



	

	while(1)

	{

		gets(st);

		puts(st);

		if(cmp(st,"open")==0)

		{

				led1_on();

				led2_on();

				led3_on();

		}

		if(cmp(st,"close")==0)

		{

				led1_off();

				led2_off();

				led3_off();

		}

	}

	

	return 0;

	

	

}

main.c