/***********************Copyright(c)**************************
**------------------------------------------------------------
**Created by:    康利平
**Descriptions:  The original version
**Descriptions:  键盘测试程序1
**------------------------------------------------------------*/
#include
#define uchar unsigned char
#define uint unsigned int
sbit P3_4=P3^4;
sbit P3_5=P3^5;
sbit P3_6=P3^6;
sbit P3_7=P3^7;
sbit P1_0=P1^0;
sbit P1_2=P1^2;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,
0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};
uchar code tablebit[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
uchar table1[]={0,16,16,16,16,16,16,16};
uchar temp,key,count1;
uchar keycount;
void delay(uint t)
{
  uchar kk,nn;
  for(kk=0;kk<200;kk++)
     for(nn=0;nn }
void change(uchar *p,uchar count)
{
   while(count>0)
     {
       *(p+count)=*(p+count-1);
        count--;
     }
}
void keyscan()
{
  P3=0xff;
  P3_4=0;
  temp=P3;
  temp=P3&0x0f;
  if(temp!=0x0f)
     {
      delay(50);
      temp=P3;
      temp=temp&0x0f;
      if(temp!=0x0f)
      {
        temp=P3;
        temp=temp&0x0f;
        switch(temp)
         {
           case 0x0e:key=0;break;
           case 0x0d:key=4;break;
           case 0x0b:key=8;break;
           case 0x07:key=12;break;
         }
       if((key>=0)&&(key<16))
         {
           keycount++;
           if(keycount<8)
              {
                change(table1,keycount);
                table1[0]=key;
              }
         }
        else {keycount=8;}
       temp=P3;P1_2=~P1_2;
       temp=temp&0x0f;
       while(temp!=0x0f)
         {
           temp=P3;
           temp=temp&0x0f;
         }
       
      }
     }
   P3=0xff;
  P3_5=0;
  temp=P3;
  temp=P3&0x0f;
  if(temp!=0x0f)
     {
      delay(50);
      temp=P3;
      temp=temp&0x0f;
      if(temp!=0x0f)
      {
        temp=P3;
        temp=temp&0x0f;
        switch(temp)
         {
           case 0x0e:key=1;break;
           case 0x0d:key=5;break;
           case 0x0b:key=9;break;
           case 0x07:key=13;break;
         }
       if((key>=0)&&(key<16))
         {
           keycount++;
           if(keycount<8)
              {
                change(table1,keycount);
                table1[0]=key;
              }
         }
        else {keycount=8;}
       temp=P3;P1_2=~P1_2;
       temp=temp&0x0f;
       while(temp!=0x0f)
         {
           temp=P3;
           temp=temp&0x0f;
         }
       
      }
     }
   P3=0xff;
  P3_6=0;
  temp=P3;
  temp=P3&0x0f;
  if(temp!=0x0f)
     {
      delay(50);
      temp=P3;
      temp=temp&0x0f;
      if(temp!=0x0f)
      {
        temp=P3;
        temp=temp&0x0f;
        switch(temp)
         {
           case 0x0e:key=2;break;
           case 0x0d:key=6;break;
           case 0x0b:key=10;break;
           case 0x07:key=14;break;
         }
       if((key>=0)&&(key<16))
         {
           keycount++;
           if(keycount<8)
              {
                change(table1,keycount);
                table1[0]=key;
              }
         }
        else {keycount=8;}
       temp=P3;P1_2=~P1_2;
       temp=temp&0x0f;
       while(temp!=0x0f)
         {
           temp=P3;
           temp=temp&0x0f;
         }
       
      }
     }
   P3=0xff;
  P3_7=0;
  temp=P3;
  temp=P3&0x0f;
  if(temp!=0x0f)
     {
      delay(50);
      temp=P3;
      temp=temp&0x0f;
      if(temp!=0x0f)
      {
        temp=P3;
        temp=temp&0x0f;
        switch(temp)
         {
           case 0x0e:key=3;break;
           case 0x0d:key=7;break;
           case 0x0b:key=11;break;
           case 0x07:key=15;break;
         }
       if((key>=0)&&(key<16))
         {
           keycount++;
           if(keycount<8)
              {
                change(table1,keycount);
                table1[0]=key;
              }
         }
        else {keycount=8;}
       temp=P3;
       P1_2=~P1_2;
       temp=temp&0x0f;
       while(temp!=0x0f)
         {
           temp=P3;
           temp=temp&0x0f;
         }
       
      }
     }
}
void main()
{
  TMOD=0x01;
  TH0=(65536-6000)/256;
  TL0=(65536-6000)%256;
  ET0=1;
  TR0=1;
  EA=1;
  while(1)
    {
      keyscan();
    }
}
void time0() interrupt 1
{
 TH0=(65536-6000)/256;
 TL0=(65536-6000)%256;
 P2=tablebit[count1];
 P0=table[table1[count1]];
 count1++;
 if(count1==8)
 {count1=0;}
}