基于89C52单片机的64点阵设计

本设计主题为LED点阵，运用动态扫描的方式通过单片机控制8*8LED点阵显示不同的图案。

一、本设计仿真电路图如下：布线布局如图：因Proteus软件中uln2803芯片设置与实际不符，所以未进行电脑仿真。

二、实验代码如下：#include <reg52.h>#include <intrins.h>#define uchar unsigned char#define uint unsigned intuchar code tab_a[] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80};uchar code tab_xin[] = {0x00, 0x66, 0xff, 0xff, 0xff, 0x7e, 0x3c, 0x18};//心形矩阵阳极数据uchar code tab_xiao[] = {0x66, 0x99, 0x24, 0x18};//笑矩阵阳极数据uchar code tab_ku[]= {0x7e, 0x24, 0x24, 0x24, 0x18, 0x24};//哭矩阵阳极数据void time(uchar);void the_first ();void the_second ();void the_third();void the_forth();void the_fifth();/**************主函数（P1控制阴极-与tab_b匹配,p2控制阳极-与tab_a匹配）********************/uint sum = 0, num, i;void main(){while (1){TMOD = 0x01;TH0=(65536-5000)/256;TL0=(65536-5000)%256;EA = 1; //开总中断ET0 = 1; //开定时器0中断TR0 = 1; //启动定时器0the_first();time(50);the_second();time(50);the_third();time(50);the_forth();time(50);the_fifth();}/**************主函数（P1控制阴极-与tab_b匹配,p0控制阳极-与tab_a匹配）********************//******************外围灯亮子程序*********************/void the_first(){uchar temp;num = 3;while (num){time(50);P0 = 0xff;P1 = 0xff;time(50);P0 = 0x00;P1 = 0x00;num--;}/***************第一行**************/temp = tab_a[7];P1 = tab_a[0];while (temp != tab_a[0]){P0 = temp;temp = _cror_(temp, 1);time(50);}/***************第一行**************//***************第一列**************/temp = tab_a[0];while (temp != tab_a[7]){P1 = temp;P0 = tab_a[0];temp = _crol_(temp, 1);time(50);}/***************第一列**************//***************第八行**************/temp = tab_a[0];P1 = tab_a[7];while (temp != tab_a[7])P0 = temp;temp = _crol_(temp, 1);time(50);}/***************第八行**************//***************第八列**************/temp = tab_a[7];while (temp != tab_a[0]){P1 = temp;P0 = tab_a[7];temp = _cror_(temp, 1);time(50);}/***************第八列**************/P1 = 0x00;P0 = 0x00;}/******************外围灯亮子程序*********************//******************灯柱左右移动子程序*****************/void the_second (){for(num = 0; num < 1; num++) //FROM left to right 3 time { for(i=0;i<8;i++) { P1=tab_a[i]; P0=0xff; time(50);}} for(num = 0; num < 1; num++) //FROM right to left 3 time { for(i=0;i<8;i++) { P1=tab_a[7-i]; P0=0xff; time(50);}} for(num = 0; num < 1; num++) //FROM top to bottom 3 time { for(i=0;i<8;i++) { P1=0xff; P0=tab_a[7-i]; time(50);}} for(num = 0; num < 1; num++) //FROM bottom to top 3 time { for(i=0;i<8;i++) { P1=0xff; P0=tab_a[i]; time(50);}} P1 = 0x00;P0 = 0x00;}/******************灯柱左右移动子程序*****************//****************** 显示心形*****************/void the_third(){while (i != 25){if(8 == num) num = 0;switch(num){case 0: P0 = tab_xin[0]; break;case 1: P0 = tab_xin[1]; break;case 2: P0 = tab_xin[2]; break;case 3: P0 = tab_xin[3]; break;case 4: P0 = tab_xin[4]; break;case 5: P0 = tab_xin[5]; break;case 6: P0 = tab_xin[6]; break;case 7: P0 = tab_xin[7]; break;default: break;}P1 = tab_a[num];num++;time(50);P0 = 0x00;P1 = 0x00;i++;}i = 1000;num = 0;while(i){P1 = 0x00;switch(num){case 0: P0 = tab_xin[0]; break;case 1: P0 = tab_xin[1]; break;case 2: P0 = tab_xin[2]; break;case 3: P0 = tab_xin[3]; break;case 4: P0 = tab_xin[4]; break;case 5: P0 = tab_xin[5]; break;case 6: P0 = tab_xin[6]; break;case 7: P0 = tab_xin[7]; break;default: break;}P1 = tab_a[num];time(1);P0 = 0x00;P1 = 0x00;if(num == 8) num = 0;}}/****************** 显示心形*****************//****************** 笑*****************/void the_forth(){i = 1000;num = 0;while(i){P1 = 0x00;switch(num){case 0: P0 = tab_xiao[0]; P1 = tab_a[1]; break;case 1: P0 = tab_xiao[1]; P1 = tab_a[2]; break;case 2: P0 = tab_xiao[2]; P1 = tab_a[5]; break;case 3: P0 = tab_xiao[3]; P1 = tab_a[6]; break;default: break;}time(1);num++;P0 = 0x00;P1 = 0x00;i--;if(num == 4) num = 0;}}/****************** 笑*****************//****************** 哭*****************/void the_fifth(){i = 1000;num = 0;while(i){P1 = 0x00;switch(num){case 1: P0 = tab_ku[1]; P1 = tab_a[2]; break;case 2: P0 = tab_ku[2]; P1 = tab_a[3]; break;case 3: P0 = tab_ku[3]; P1 = tab_a[4]; break;case 4: P0 = tab_ku[4]; P1 = tab_a[6]; break;case 5: P0 = tab_ku[5]; P1 = tab_a[7]; break;default: break;}time(1);num++;P0 = 0x00;P1 = 0x00;i--;if(num == 5) num = 0;}}/****************** 哭*****************//****************** 中断程序*****************/void interrupt_1 () interrupt 1{TH0=(65536-5000)/256;TL0=(65536-5000)%256;sum++;}/****************** 中断程序*****************//****************** 计时子程序*****************/void time(uchar t){while(t){if(sum == 1){sum = 0;t--;}}}/****************** 计时子程序*****************/三、实物效果如下图所示：（因点阵无法在单层版上实现布线，所以采用万能版焊接然后用杜邦线连起来）第11页共4页。