左上角led点亮代码

#include "reg52.h"
#include "intrins.h"

#define WELA P0
typedef unsigned char u8;
typedef unsigned int u16;

sbit SRCLK=P3^6;
sbit RCLK595=P3^5;
sbit SER=P3^4;

u8 ledDuan[]={0x00,0x00,0x3e,0x41,0x41,0x41,0x3e,0x00};
void hc595Send(u8 dat)
{
	u8 a;
	SRCLK=0;
	RCLK595=0;
	for(a=0;a<8;a++)
	{
		SER=dat>>7;
		dat <<=1;
		SRCLK=1;
		_nop_();
		_nop_();
		SRCLK=0;
	}
	RCLK595=1;
	_nop_();
	_nop_();
	RCLK595=0;
}
	
void delayus(u16 i)
{
	while(i--);
}

void main()
{
	hc595Send(0x80);
	WELA=0x7f;
	while(1);
}

动态显示数字0

#include "reg52.h"
#include "intrins.h"

#define WELA P0
typedef unsigned char u8;
typedef unsigned int u16;

sbit SRCLK=P3^6;
sbit RCLK595=P3^5;
sbit SER=P3^4;

u8 ledDuan[]={0x00,0x00,0x3e,0x41,0x41,0x41,0x3e,0x00};
u8 ledWei[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
void hc595Send(u8 dat)
{
	u8 a;
	SRCLK=0;
	RCLK595=0;
	for(a=0;a<8;a++)
	{
		SER=dat>>7;
		dat <<=1;
		SRCLK=1;
		_nop_();
		_nop_();
		SRCLK=0;
	}
	RCLK595=1;
	_nop_();
	_nop_();
	RCLK595=0;
}
	
void delayus(u16 i)
{
	while(i--);
}

void main()
{
	u8 a;
	while(1)
	{
		for(a=0;a<8;a++)
		{
			WELA=ledWei[a];
			hc595Send(ledDuan[a]);
			delayus(10);
			hc595Send(0x00);  //消影
		}
	}
}

版权声明：本文为CSDN博主「acktomas」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/acktomas/article/details/104167683