STC89C52单片机 DAY 4 LED点阵模块

LED点阵模块显示数字0

#include<reg51.h>
#include<intrins.h>
typedef unsigned char u8;
typedef unsigned int u16;

sbit SRCLK=P3^6;
sbit RCLK=P3^5;
sbit SER=P3^6;

u8 ledduan[]={0x00,0x00,0x3e,0x41,0x41,0x41,0x3e};
u8 ledwei[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};

void delay(int i)
{
	while(i--);
}
void Hc595SendByte(u8 dat)
{
	u8 a;
	SRCLK=0;
	RCLK=0;
	for(a=0;a<8;a++)
	{
		SER=dat>>7;  //接收最高位
		dat<<=1;  //左移一位
		SRCLK=1;  //通过上升沿来接收
		_nop_();
		_nop_();
		SRCLK=0;
	}
	RCLK=1;
	_nop_();
	_nop_();
	RCLK=0;
}

int main()
{
	int i;
	while(1)
	{
		P0=0x7f;
		for(i=0;i<8;i++)
		{
			P0=ledwei[i];
			Hc595SendByte(ledduan[i]);
			delay(100);   //延时
			Hc595SendByte(0x00);   //消影
		}
	}
}