矩阵键盘输入

幕布链接
https://www.mubucm.com/doc/CAXAv_OT2a
参考《零基础学51单片机（C语言版）》

16键矩阵键盘行列扫描方式输入及显示
#include<reg51.h>
sbit DuanSuo=P2^2;
sbit WeiSuo =P2^3;
#define WDM P0
#define KeyP1 P1
unsigned char code DMtable[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
unsigned char code WMtable[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char TData[8];
void DelayUs(unsigned char tu);
void DelayMs(unsigned char tm);
void Display(unsigned char ShiWei,unsigned char WeiShu);
void T0Int_S(void);
unsigned char KeyS(void);
unsigned char KeyZ(void);
void main (void)
{
unsigned char num,i,j;
T0Int_S();
while(1)
{
  num=KeyZ();
        if(num!=0xff)
        {
   if(i<8)
         {
    TData=DMtable[num];
         }
  i++;
  if(i==9)         
         {
    for(j=0;j<8;j++)
    {
     TData[j]=0;
                }
    i=0;
         }
  }
}       
}       
void Display(unsigned char ShiWei,unsigned char WeiShu)
{
static unsigned char i;
WDM=WMtable[i+ShiWei];
WeiSuo=1;
WeiSuo=0;
WDM=TData;
DuanSuo=1;
DuanSuo=0;
i++;
if(i==WeiSuo)
{
  i=0;
}
}
void T0Int_S(void)
{
TMOD=0x01;
Th0=0;
Tl0=0;
EA =1;
ET0=1;
TR0=1;
}
void T0Int_Z(void) interrupt 1
{
TH0=(65536-2000)/256;
TL0=(65536-2000)%256;
Display(0,8);
}
unsigned char KeyS(void)
{
unsigned char KeyM;
KeyP1=0xf0;
if(KeyP1!=0xf0)
{
  DelayMs(10);
  if(KeyP1!=0xf0)
        {
   KeyP1=0xfe;
   if(KeyP1!=0xfe)
   {
    KeyM=KeyP1;
    DelayMs(10);
    while(KeyP1!=0xfe);
                return KeyM;
         }
  KeyP1=0xfd;
   if(KeyP1!=0xfd￡&#169;         
         {
                KeyM=KeyP1;
    DelayMs(10);
    while(KeyP1!=0xfd);
                return KeyM;
         }
        KeyP1=0xfb;
         if(KeyP1!=0xfb￡&#169;         
         {
                KeyM=KeyP1;
    DelayMs(10);
    while(KeyP1!=0xfb);
                return KeyM;
         }
  KeyP1=0xf7;
   if(KeyP1!=0xf7￡&#169;         
         {
                KeyM=KeyP1;
    DelayMs(10);
    while(KeyP1!=0xf7);
                return KeyM;
         }
  }
}
return 0xff;
}
unsigned char KeyZ(void)
{
switch(KeyS())
{
  case 0x7e:return 0;break;          
  case 0x7d:return 1;break;
  case 0x7b:return 2;break;
  case 0x77:return 3;break;
  case 0xbe:return 4;break;
  case 0xbd:return 5;break;
  case 0xbb:return 6;break;
  case 0xb7:return 7;break;
  case 0xde:return 8;break;
  case 0xdd:return 9;break;
  case 0xdb:return 10;break;
  case 0xd7:return 11;break;
  case 0xee:return 12;break;
  case 0xed:return 13; break;
  case 0xeb:return 14; break;
  case 0xe7:return 15; break;
  default:return 0xff;break;
}
}

程序不管用啊

房一鹏 发表于 2022-1-16 21:24
程序不管用啊

xd我的代码是练着玩的【doge】
没有烧录。，。