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单片机课程设计——LED8×8点阵实验.pdf 13页
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单片机课程设计——LED8×8点阵实验.pdf
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单片机原理及应用课程设计
——LED 8×8 点阵的设计
作 者：王雨轩 指导老师：张金花
摘 要：本设计主要是利用可编程并行 I/O接口芯片 点阵共需要64
个发光二极管组成，当接高电平的时候则相应的二极管就亮。字模中每一点使用一
个二进制位(Bit)表示，如果是1，则说明此处有点，若是0，则说明没有。这样，
一个8×8 点阵的汉字总共需要8×8/8=8 个字节表示。
Abstract: This design mainly is to use programmable parallel I/O interface chip
dot matrix of total need 64 light-emitting diodes. When meet high level has corresponding
diode is bright. Type in every Point of the use of a binary (Bit). If it is 1, then here is a little
point. If it is 0, then here is no point. In this way, an 8×8 dot matrix Chinese characters, it
will be altogether 8×8/8=8 bytes.
关键字：单片机 8255 发光二极管 点阵
宿迁学院机电工程系2011 级自动化2 班◆王雨轩
说明书总页数：13 页
LED 8×8 点阵的设计 3
一、课题要求与内容 3
（一）课题要求 3
（二）课题内容 3
（三）使用设备 3
二、系统总体方案设计 4
（一）系统流程图 4
三、系统硬件设计 5
（一）设计原理图 5
（二）主机连线说明 5
（三）硬件调试 5
四、系统软件设计 6
（一）程序清单 6
（二）软件调试 8
（三）字码表 9
五、结束语 12
六、参考文献 13
宿迁学院机电工程系2011 级自动化2 班◆王雨轩
LED 8×8 点阵的设计
随着电子科技的飞速发展，电子技术正在逐渐改善着人们的学习、生活、工
LDE 显示器件种类繁多，从简单的耽搁LED 到LED 光柱显示，字符显示再到大
面积的平板显示，应有尽有。LED 之所以收到广泛重视与迅速发展，是与它具有的
有点分不开的，这些优点概括起来是：工作电压低，功耗小，小型化，易与集成电
路匹配，驱动简单，寿命长，耐冲击，性能稳定。
通过课程设计使学生更进一步掌握单片机原理及应用课程的有关知识，提高应
用单片机解决问题的能力，加深对单片机应用的理解。通过查阅资料，结合所学知
识进行软、硬件的设计，使学生初步掌握应用单片机解决问题的步骤及方法。为以
后学生结合专业从事单片机应用设计奠定基础。
一、课题要求与内容
（一）课题要求
1、熟悉8255 的功能，了解点阵显示的原理及控制方法；
2、学会使用LED 点阵，通过编程显示不同字符；
3、认真预习本节实验内容，可尝试自行编写程序，做好实验准备工作，填写实
正在加载中，请稍后...单片机驱动8*8LED点阵c程序
> 单片机驱动8*8LED点阵c程序
单片机驱动8*8LED点阵c程序
#include typedef unsigned char uint8;typedef unsigned int uint16;本文引用地址：sbit acon=P1^0; //38译码器sbit bcon=P1^1;sbit ccon=P1^2;sbit en=P1^7; //译码器使能uint8 j=0,k=0;uint16 i=0;code uint8 ledcode[]={ 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, // 0xFF,0xC3,0xE7,0xE7,0xE7,0xE7,0xC3,0xFF, // I 0xFF,0x99,0x66,0x7E,0xBD,0xDB,0xE7,0xFF, // 心 0xFF,0x99,0x99,0x99,0x99,0x99,0xC3,0xFF, // U 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF }; // 哄老婆用void timer1_init(){TMOD|=0x10;TMOD&=0TH1=0 //1msTL1=0x66;TR1=1; //定时器1开启}void inter_init(){ET1=1; //定时器1中断开启EA=1; //总中断开启}void frush(){switch(j){case 0:acon=0;bcon=0;ccon=0; //扫描LED点阵case 1:acon=1;bcon=0;ccon=0;case 2:acon=0;bcon=1;ccon=0;case 3:acon=1;bcon=1;ccon=0;case 4:acon=0;bcon=0;ccon=1;case 5:acon=1;bcon=0;ccon=1;case 6:acon=0;bcon=1;ccon=1;case 7:acon=1;bcon=1;ccon=1;}P2=ledcode[k+j]; //逐行输出if(j==7)j=0;j++;}main(){en=1;P2=0timer1_init();inter_init();while(1);}void timer1_interrupt() interrupt 3{TH1=0TL1=0x66;i++;frush();if(i==500){i=0;if(k==32)k=0;k++;}}仿真图：
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微信公众号一51单片机8&8LED点阵显示数字与字符
#include "AT89X52.H"
unsigned char&code
tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char code digittab[][8]={
{0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF},//"
{0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF},//"
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF},//"_",0*/
{0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF},//"_",0*/
{0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF},//"_",0*/
{0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF},//"_",0*/
{0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFF},//"_",0*/
{0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF},//"_",0*/
{0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF},//"_",0*/
{0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF},//"_",0*/
{0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01},//"|",0*/
{0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x02},//"|",0*/
{0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x04},//"|",0*/
{0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08},//"|",0*/
{0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10},//"|",0*/
{0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20},//"|",0*/
{0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40},//"|",0*/
{0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80},//"|",0*/
{0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF},//" ",0*/
{0x00,0x00,0x00,0x18,0x18,0x00,0x00,0x00},//"未命名文件",0*/
{0x00,0x00,0x3C,0x24,0x24,0x3C,0x00,0x00},//"未命名文件",0*/
{0x00,0x7E,0x42,0x42,0x42,0x42,0x7E,0x00},//"未命名文件",0*/
{0xFF,0x81,0x81,0x81,0x81,0x81,0x81,0xFF},//"未命名文件",0*/
{0x00,0x00,0x00,0x18,0x18,0x00,0x00,0x00},
{0x00,0x00,0x24,0x18,0x18,0x24,0x00,0x00},
{0x00,0x42,0x24,0x18,0x18,0x24,0x42,0x00},
{0x81,0x42,0x24,0x18,0x18,0x24,0x42,0x81},
{0x00,0x00,0x00,0x18,0x18,0x00,0x00,0x00},
{0x00,0x00,0x24,0x18,0x18,0x24,0x00,0x00},
{0x00,0x10,0x24,0x1A,0x58,0x24,0x08,0x00},
{0x08,0x10,0x24,0x9A,0x59,0x24,0x08,0x10},
{0x0C,0x10,0xA4,0x9A,0x59,0x25,0x08,0x30},
{0x0E,0x90,0xA4,0x9A,0x59,0x25,0x09,0x70},
{0x8F,0x90,0xA4,0x9A,0x59,0x25,0x09,0xF1},
{0x0C,0x12,0x12,0x12,0x12,0x12,0x0C,0x00},
{0x04,0x06,0x04,0x04,0x04,0x04,0x0E,0x00},
{0x0C,0x12,0x10,0x08,0x04,0x02,0x1E,0x00},
{0x0C,0x12,0x10,0x0C,0x10,0x12,0x0C,0x00},
{0x08,0x0C,0x0C,0x0A,0x0A,0x1E,0x08,0x00},
{0x1E,0x02,0x02,0x0E,0x10,0x10,0x0E,0x00},
{0x0C,0x12,0x02,0x0E,0x12,0x12,0x0C,0x00},
{0x1E,0x12,0x10,0x08,0x04,0x04,0x04,0x00},
{0x0C,0x12,0x12,0x0C,0x12,0x12,0x0C,0x00},
{0x0C,0x12,0x12,0x1C,0x10,0x12,0x0C,0x00},
{0x0C,0x12,0x12,0x12,0x1E,0x12,0x12,0x00},
{0x0E,0x12,0x12,0x0E,0x12,0x12,0x0E,0x00},
{0x0C,0x12,0x02,0x02,0x02,0x12,0x0C,0x00},
{0x0E,0x12,0x12,0x12,0x12,0x12,0x0E,0x00},
{0x1E,0x02,0x02,0x0E,0x02,0x02,0x1E,0x00},
{0x1E,0x02,0x02,0x0E,0x02,0x02,0x02,0x00},
{0x0C,0x12,0x02,0x1A,0x12,0x12,0x0C,0x00},
{0x12,0x12,0x12,0x1E,0x12,0x12,0x12,0x00},
{0x0E,0x04,0x04,0x04,0x04,0x04,0x0E,0x00},
{0x10,0x10,0x10,0x10,0x12,0x12,0x0C,0x00},
{0x12,0x12,0x0A,0x06,0x0A,0x12,0x12,0x00},
{0x02,0x02,0x02,0x02,0x02,0x02,0x1E,0x00},
{0x12,0x1E,0x1E,0x12,0x12,0x12,0x12,0x00},
{0x12,0x16,0x16,0x1A,0x1A,0x12,0x12,0x00},
{0x1E,0x12,0x12,0x12,0x12,0x12,0x1E,0x00},
{0x0E,0x12,0x12,0x0E,0x02,0x02,0x02,0x00},
{0x0C,0x12,0x12,0x12,0x16,0x1A,0x1C,0x00},
{0x0E,0x12,0x12,0x0E,0x06,0x0A,0x12,0x00},
{0x0C,0x12,0x02,0x0C,0x10,0x12,0x0C,0x00},
{0x1E,0x04,0x04,0x04,0x04,0x04,0x04,0x00},
{0x12,0x12,0x12,0x12,0x12,0x12,0x0C,0x00},
{0x12,0x12,0x12,0x12,0x0C,0x0C,0x0C,0x00},
{0x12,0x12,0x12,0x12,0x1E,0x1E,0x12,0x00},
{0x12,0x12,0x0C,0x0C,0x0C,0x12,0x12,0x00},
{0x11,0x11,0x0A,0x04,0x04,0x04,0x04,0x00},
{0x1E,0x10,0x08,0x0C,0x04,0x02,0x1E,0x00},
unsigned int
unsigned char
unsigned char
void main(void)
TMOD=0x01;
TH0=()/256;
void t0(void) interrupt 1 using 0
TH0=()/256;
P1=0XFF; //消除显示重影问题
P0=~digittab[cntb][cnta];
P1=~(0x01&&cnta);
if(cnta==8)
timecount++;
if(timecount==200)
timecount=0;
if(cntb==70)
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