8*8LED点阵

实验代码

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

typedef unsigned int u16;
typedef unsigned char u8;
u8 lednum=0x80;

sbit SHCP=P3^6;
sbit SER=P3^4;
sbit STCP=P3^5;


void  HC595SENDBYTE(u8 dat)
{
	u8 a;
	SHCP=1;
	STCP=1;
	for(a=0;a<8;a++)
	{
		SER=dat>>7;
		dat<<=1;
		SHCP=0;
		_nop_();
		_nop_();
		SHCP=1;
	}
	STCP=0;
	_nop_();
	STCP=1;
}



void main()
{
	P0=0X7F;
	while(1)
	{
		HC595SENDBYTE(lednum);
	}
}