51单片机+8279 3*8键盘输入程序数码管向前滚动输入0~f Proteus仿真

ID:767266 · 发表于 2020-6-15 15:59

3*8 键盘输入 led数码管向前滚动输入 0~f C51 单片机 protues仿真+代码

压缩包里有 protues仿真工程和keil 代码
仿真原理图如下（proteus仿真工程文件可到本帖附件中下载）

单片机源程序如下:

#include<reg51.h>
#include<absacc.h>
#define COM8279 XBYTE[0x7fff] //这个是命令口。是CS
#define DAT8279 XBYTE[0x7eff] //这个是数据口。是A0
#define uchar unsigned char
uchar code table[]={0x3F,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00,0x40};//0-F,-
uchar idata keybuffer[6]={16,16,16,16,16,16}; // 临时放需要显示的数字的地方
sbit clflag=ACC^7;
uchar key;
uchar Keyflag;
uchar run_once=1;
uchar flag_display;
uchar p;
void delay(uchar x) //延时子程序
{
uchar i;
for(i=0;i<x;i++);
}
void Display() //显示函数
{
uchar i;
COM8279=0X90;
for(i=0;i<6;i++)
{
COM8279=i+0x80;
DAT8279=table[keybuffer[i]];
delay(10);
}
}
void Disp(d) //显示函数，
{
COM8279=0X90;
COM8279=0x80;
DAT8279=table[d];
delay(10);
}
void Key_0(void) interrupt 0 using 1 //键盘按键使用外部中断0
{
uchar ch;
COM8279=0x40;
ch=DAT8279;
ch&=0x3f;
key=ch;
flag_display=1;
if(key==0)
{
if(run_once==1)
{
run_once=0;
return;
}
}
if(key!=0x00&&key!=0x01&&key!=0x02&&key!=0x03&&key!=0x04&&key!=0x05&&key!=0x06&&key!=0x07&&key!=0x08
&&key!=0x09&&key!=0x0a&&key!=0x0b&&key!=0x0c&&key!=0x0d&&key!=0x0e&&key!=0x0f)
{
key=17;
}
if(p>6)
{
p = 0;
}
keybuffer[5]=keybuffer[4];
keybuffer[4]=keybuffer[3];
keybuffer[3]=keybuffer[2];
keybuffer[2]=keybuffer[1];
keybuffer[1]= keybuffer[0];
keybuffer[0]=key;
Keyflag=1;
p++;
}
void KeyTest(uchar keyh) //键盘按键处理及通道选择程序
{
if(key!=0x00&&key!=0x01&&key!=0x02&&key!=0x03&&key!=0x04&&key!=0x05&&key!=0x06&&key!=0x07&&key!=0x08
&&key!=0x09&&key!=0x0a&&key!=0x0b&&key!=0x0c&&key!=0x0d&&key!=0x0e&&key!=0x0f)
{
Disp(0x10);
}
switch (keyh)
{
case 0x00:{//按键0
Disp(key);
break;}
case 0x01:{//按键1
Disp(key);
break;}
case 0x02:{//按键2
Disp(key);
break;}
case 0x03:{//按键3
Disp(key);
break;}
case 0x04:{//按键4
Disp(key);
break;}
case 0x05:{//按键5
Disp(key);
break;}
case 0x06:{//按键6
Disp(key);
break;}
case 0x07:{//按键7
Disp(key);
break;}
case 0x08:{//按键0
Disp(key);
break;}
case 0x09:{//按键1
Disp(key);
break;}
case 0x0a:{//按键5
Disp(key);
break;}
case 0x0b:{//按键6
Disp(key);
break;}
case 0x0c:{//按键7
Disp(key);
case 0x0d:{//按键0
Disp(key);
break;}
case 0x0e:{//按键1
Disp(key);
break;}
case 0x0f:{//按键1
Disp(key);
break;}
default:
break; }
}
}
void main(void)
……………………
…………限于本文篇幅余下代码请从51黑下载附件…………