LED点阵程序

#include <reg52.h>

#define uchar unsigned char

#define uint unsigned int

#define outdat P2

sbit ld=P3^0

sbit lw=P3^1

//数码管显示代码

unsigned char code tab[]={

0x01,0x02,0x03,0x04,0xFF,0xFF,0xFF,0xFF}

void delay1ms(unsigned int count)  //延时1ms

{

unsigned char j

for(count>0count--)

for(j=0j<120j++)

}

void display(unsigned char num)

{

outdat=tab[num]

ld=0ld=1ld=0

outdat=0x01<<num

lw=0lw=1lw=0

delay1ms(2)

}

void main()

{

unsigned char i

while(1)

{

for(i=0i<8i++)

{

display(i)

}

}

}

点阵原理就是一个LED的两端都接IO，当正极为1，负极为0时点亮相应的LED。

下面是8×8的LED点阵程序，参考一下吧

#include<reg51.h>

#define uchar unsigned char

#define uint unsigned int

uchar code TAB[]={

0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,

0x00,0x82,0xFE,0x82,0x80,0xC0,0x00,0x00,

0x00,0x7C,0x82,0x82,0x82,0x7C,0x00,0x00,

0x02,0x0E,0x72,0x80,0x70,0x0E,0x02,0x00,

0x00,0x82,0xFE,0x92,0xBA,0x82,0xC6,0x00,

0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00

}

/*delay(uint t)

{

uint a,b

for(a=0a<ta++)

for(b=0b<110b++)

} */

void main(void)

{

uint i,j,xx

uchar bittemp=0x01

while(1)

{

for(i=0i<40i++)

{

for(xx=0xx<500xx++)

{

bittemp=0x80

for(j=0j<8j++)

{

P2=0x00 //消隐

P0= ~TAB[i+8-j]

P2 = bittemp

bittemp >>= 1

}

}

}

}

}

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