电脑
开发板
主要利用二极管的动态扫描，根据电路图，分配I/O整理思路
#include 'reg52.h'//包含头文件，一般情况不需要改动，头文件包含特殊功能寄存器的定义
#define uint unsigned int#define uchar unsigned char
sbit smg=P3^7;uchar count=0,j=0,a=0;uchar code saomiao[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80,}; //共阳极uint code xianshi [18][8]={{0xff,0xff,0xc1,0xbe,0xbe,0xbe,0xc1,0xff}, //0{0xff,0xff,0xff,0xff,0xde,0x80,0xfe,0xff}, //1{0xff,0xff,0xd8,0xba,0xba,0xba,0xc6,0xff}, //2{0xff,0xff,0xdd,0xb6,0xb6,0xb6,0xc9,0xff}, //3{0xff,0xff,0xf3,0xeb,0xdb,0x80,0xfb,0xff}, //4{0xff,0xff,0x8d,0xae,0xae,0xae,0xb1,0xff}, //5{0xff,0xff,0xc1,0xb6,0xb6,0xb6,0xd9,0xff}, //6{0xff,0xff,0xbf,0xbf,0xbf,0xb0,0x8f,0xff}, //7{0xff,0xff,0xc9,0xb6,0xb6,0xb6,0xc9,0xff}, //8{0xff,0xff,0xcd,0xb6,0xb6,0xb6,0xc1,0xff}, //9{0xff,0xff,0x80,0xb7,0xb7,0xcf,0xff,0xff}, //P{0xff,0xff,0x80,0xb7,0xb3,0x8c,0xff,0xff}, //R{0xff,0xff,0x80,0xb6,0xb6,0xb6,0xff,0xff}, //E{0xff,0xff,0xc1,0xbe,0xbe,0x9d,0xff,0xff}, //C{0xff,0xff,0x80,0xf7,0xf7,0x80,0xff,0xff}, //H{0xff,0xff,0xff,0x00,0x00,0xff,0xff,0xff}, //I{0xff,0x80,0xef,0xf7,0xfb,0x80,0xff,0xff}, //N{0x83,0xb7,0xb7,0x00,0xb7,0xb7,0x83,0xff}//中};
/******************************************************************//* 延时函数声明 *//******************************************************************//*void mdelay(uint t){ uchar n; for(;t>0;t--) for(n=0;n<125;n++) {;}}*/void mdelay(uint t){ uchar n; while(t--) { for(n=0;n<123;n++) {;} } }
/******************************************************************//* 主函数 *//******************************************************************/void main(){ uchar i; EA=1;//开总中断开关 TH0=0x3c;//设置初值50ms TL0=0xb0; ET0=1;//打开定时器中断 TR0=1;//启动定时器 TMOD=0x01;//设置定时器0为工作方式1 while(1) { if(a==1) { for(i=0;i<8;i++) { P0=saomiao[i]; //公共端，高电平有效 smg=1; //锁存 smg=0; P0=0xff; P0=xianshi[j][i];//数组显示 mdelay(2); } } else { for(i=0;i<8;i++) { P0=saomiao[i]; //公共端，高电平有效 smg=1; //锁存 smg=0; P0=0xff; P2=xianshi[j][i];//数组显示 mdelay(2); } } }}
/******************************************************************//* 定时器0 *//******************************************************************/void time0() interrupt 1{ TH0=0x3c; TL0=0xb0; count++; if(count==20) { j++; //间隔1s a++; count=0; if(j==18) j=0; if(a==2) a=0; }}
本经验只供参考，如有不足，还请见谅，如果有什么疑问请在下边留言，及时给你解答。。。
电脑