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8X8点阵原理及驱动_黑暗幽灵_新浪博客

8X8点阵的实际外观图如下：

一共64个发光点构成，上下两排引脚，每排8个，一共16个

点阵侧面有文字的那面对准自己，

（图 1）

8X8点阵的显示原理：

8X8点阵共由64个发光二极管组成，且每个发光二极管是

（图 2）

8*8点阵实际的引脚（图一）的不是一排阳极，一排阴极，（就像键盘一样不是abcd按顺序排的）所以焊接有点麻烦，8×8LED点阵引脚图如下：

1,2,3,4,5,6,7,8是行（阳极）

a,b,c,d,e,f,g,h是列（阴极）//此处说的都是行阳型8*8点阵，行阴的略

外面的1~16就是实际的管脚，见图一

74HC595是一个串入并出的芯片，通过一个for(i=0;i<8;i++)来存储数据。
具体来说就是{dy}个时钟信号来到时低位的数据向高位挪动一位，
在这个程序中是SH_CP 信号，当SH_CP是一个上跳沿时，
传入的形参Data与0x80相与，得到的数为1,则通过SDATA置1,否通过置为0,
并存储在74HC595的相应位置（{zd1}位即Q0那）上，
DS内部也自动左移一位数据
然后dat向左移一位，使次高位变为{zg}位与0x80相与，
并存储。通过8次后，就可以得到数据，并存储在Q0~Q7中了，
这时ST_CP一个上跳沿，数据即送出去了.

显示0~59

C语言代码：

#include<AT89X52.h>

#define uchar unsigned char
#define uint unsigned int

void Ser_IN(uchar Data)
{
   uchar i;
   for(i=0;i<8;i++)
   {
   SH_CP=0;     //先置为低
DS=Data&0x80;//取数据的{zg}位
Data<<=1;   //讲数据的次高位移到{zg}位，为下一次取数据做准备
SH_CP=1;   // 再置为高，产生移位时钟上升沿，储存器里的数据移位，数据输入
   }
}

void Par_OUT(void)
{
ST_CP=0; //先置为低
ST_CP=1; //再置为高，产生时钟上升沿，上升沿时，数据并行输出
}

uchar code tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; //列
uchar code tabdigit[60][8]={ //字模取模方向阴码逆向逐列式
{0x00,0x3E,0x41,0x41,0x3E,0x00,0x00,0x00},
{0x00,0x42,0x7F,0x40,0x00,0x00,0x00,0x00},
{0x00,0x62,0x51,0x49,0x46,0x00,0x00,0x00},
{0x00,0x22,0x49,0x49,0x36,0x00,0x00,0x00},
{0x00,0x38,0x26,0x7F,0x20,0x00,0x00,0x00},
{0x00,0x4F,0x49,0x49,0x31,0x00,0x00,0x00},
{0x00,0x3E,0x49,0x49,0x32,0x00,0x00,0x00},
{0x00,0x03,0x71,0x09,0x07,0x00,0x00,0x00},
{0x00,0x36,0x49,0x49,0x36,0x00,0x00,0x00},
{0x00,0x26,0x49,0x49,0x3E,0x00,0x00,0x00},
{0x02,0xFF,0x00,0x00,0xFF,0x81,0xFF,0x00},
{0x02,0xFF,0x00,0x02,0xFF,0x00,0x00,0x00},
{0x02,0xFF,0x00,0xF3,0x91,0x99,0xCF,0x00},
{0x02,0xFF,0x00,0x42,0x89,0x89,0x89,0x76},
{0x02,0xFF,0x00,0x1C,0x13,0x10,0xFF,0x10},
{0x02,0xFF,0x00,0x4F,0x89,0x89,0x89,0x71},
{0x02,0xFF,0x00,0x7C,0x92,0x91,0x91,0x60},
{0x02,0xFF,0x00,0x01,0xF9,0x05,0x03,0x00},
{0x02,0xFF,0x00,0x76,0x89,0x89,0x89,0x76},
{0x02,0xFF,0x00,0x4E,0x91,0x91,0x91,0x7E},
{0xE2,0x91,0x89,0x86,0x00,0xFF,0x81,0xFF},
{0xE2,0x91,0x89,0x86,0x00,0x02,0xFF,0x00},
{0x79,0x49,0x4F,0x00,0x7A,0x4A,0x4E,0x00},
{0x79,0x49,0x4F,0x00,0x49,0x49,0x49,0x36},
{0x79,0x49,0x4F,0x00,0x1E,0x10,0xFF,0x10},
{0x79,0x49,0x4F,0x00,0x4E,0x4A,0x7A,0x00},
{0x79,0x49,0x4F,0x00,0xFE,0x92,0x92,0x60},
{0x79,0x49,0x4F,0x00,0x79,0x05,0x03,0x00},
{0x79,0x49,0x4F,0x00,0x76,0x89,0x89,0x76},
{0x79,0x49,0x4F,0x00,0x4E,0x91,0x91,0x7E},
{0x42,0x89,0x89,0x76,0x00,0xFE,0x82,0xFE},
{0x42,0x89,0x89,0x76,0x00,0x02,0xFF,0x00},
{0x42,0x89,0x89,0x76,0x00,0xF9,0x89,0x8F},
{0x42,0x89,0x89,0x76,0x00,0x89,0x89,0xFF},
{0x42,0x89,0x89,0x76,0x00,0x0F,0x08,0xFF},
{0x42,0x89,0x89,0x76,0x00,0x9E,0x92,0xF2},
{0x42,0x89,0x89,0x76,0x00,0xFF,0x89,0xF9},
{0x42,0x89,0x89,0x76,0x01,0x01,0xFD,0x03},
{0x42,0x89,0x89,0x76,0x00,0xFF,0x89,0xFF},
{0x42,0x89,0x89,0x76,0x00,0xCF,0x89,0xFF},
{0x1F,0x10,0xFF,0x00,0x7E,0x81,0x81,0x7E},
{0x1F,0x10,0xFF,0x00,0x02,0xFF,0x00,0x00},
{0x1F,0x10,0xFF,0x00,0xE2,0x91,0x89,0xC6},
{0x1F,0x10,0xFF,0x00,0x42,0x89,0x89,0x76},
{0x1F,0x10,0xFF,0x00,0x1E,0x10,0xFF,0x10},
{0x1F,0x10,0xFF,0x00,0x8F,0x89,0x89,0xF9},
{0x1F,0x10,0xFF,0x00,0xFF,0x89,0x89,0xF9},
{0x1F,0x10,0xFF,0x00,0x03,0xF9,0x05,0x03},
{0x0F,0x08,0xFF,0x00,0x76,0x89,0x89,0x76},
{0x1F,0x10,0xFF,0x00,0x4E,0x91,0x91,0x7E},
{0x4F,0x49,0x79,0x00,0x3E,0x41,0x41,0x3E},
{0x4F,0x49,0x79,0x00,0x00,0x02,0x7F,0x00},
{0x4F,0x49,0x79,0x00,0x62,0x51,0x49,0x46},
{0x4F,0x49,0x79,0x00,0x42,0x89,0x89,0x76},
{0x4F,0x49,0x79,0x00,0x1E,0x10,0x7E,0x10},
{0x4F,0x49,0x79,0x00,0x4F,0x49,0x79,0x00},
{0x4F,0x49,0x79,0x00,0x7F,0x49,0x79,0x00},
{0x4F,0x49,0x79,0x00,0x01,0x7D,0x03,0x01},
{0x4F,0x49,0x79,0x00,0x76,0x89,0x89,0x76},
{0x4F,0x49,0x79,0x00,0x0E,0x91,0x91,0x7E},
};

void t0(void) interrupt 1
{
TH0=(65536-1000)/256;
TL0=(65536-1000)%256;
Ser_IN(tab[a]);   //8X8点阵列扫描
Ser_IN(tabdigit[b][a]);//送行扫描数据
Par_OUT();     //显示
a++;
if(a==8)
{
a=0;
}
timecount++;
if(timecount==1000)
{
timecount=0;
b++;
if(b==60)
{
   b=0;
}
}
}

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