点亮点阵以及点阵的图像显示

点亮左上角点阵

#include <reg52.h>

void main(void)
{
	P0 = 0xFE;
	P1 = 0xE0;
	while (1);
}

点亮第一排点阵

#include <reg52.h>

void main(void)
{
	P0 = 0x00;
	P1 = 0xE0;
	while (1);
}

利用中断点亮所有点阵

#include <reg52.h>

unsigned char code LedChar[] = 
{
	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7	
};

void main(void)
{
	TMOD = 0x10;//定时器1设置为模式1

	TH1 = 0xFC;//设置定时器1的初值，0.001s
	TL1 = 0x67;

	EA = 1;//中断总使能
	ET1 = 1;//定时器1使能

	TR1 = 1;//打开定时器1

	while (1);//等待中断
}

/* 定时器1的中断函数 */
void interrupt_(void) interrupt 3
{
	static i = 0;

	TH1 = 0xFC;//重新赋初值，0.001s
	TL1 = 0x67;

	if (i > 7)
		i = 0;

	P1 = LedChar[i];
	P0 = 0x00;
	i++;
}

利用数模工具以及中断点亮心形图案

#include <reg52.h>

unsigned char code LedChar[] = 
{
	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7	
};

unsigned char code image[] = 
{
	0xFF, 0x99, 0x00, 0x00, 0x00, 0x81, 0xC3, 0xE7
};

void main(void)
{
	TMOD = 0x10;//定时器1设置为模式1

	TH1 = 0xFC;//设置定时器1的初值，0.001s
	TL1 = 0x67;

	EA = 1;//中断总使能
	ET1 = 1;//定时器1使能

	TR1 = 1;//打开定时器1

	while (1);//等待中断
}

/* 定时器1的中断函数 */
void interrupt_(void) interrupt 3
{
	static i = 0;

	TH1 = 0xFC;//重新赋初值，0.001s
	TL1 = 0x67;

	if (i > 7)
		i = 0;

	P1 = LedChar[i];
	P0 = image[i];
	i++;
}