电子密码锁设计资料

              while(temp!=0x0f)
                {
                  temp=P3;
                  temp=temp & 0x0f;             
                }
              keyoverflag=0;//?????????
            }
        }
      P3=0xff;
      P3_5=0;
      temp=P3;
      temp=temp & 0x0f;
      if (temp!=0x0f)
        {
          for(i=10;i>0;i--)
          for(j=248;j>0;j--);
          temp=P3;
          temp=temp & 0x0f;
          if (temp!=0x0f)
            {
              temp=P3;
              temp=temp & 0x0f;             
              switch(temp)
                {
                  case 0x0e:
                    key=4;
                    break;
                  case 0x0d:
                    key=5;
                    break;
                  case 0x0b:
                    key=6;
                    break;
                  case 0x07:
                    key=11;
                    break;
                }
              temp=P3;
              P1_1=~P1_1;
              if((key>=0) && (key<10))
                {
                  if(keycount<6)
                    {
                      getps[keycount]=key;
                      dispbuf[keycount+2]=19;
                    }
                  keycount++;
                  if(keycount==6)
                    {
                      keycount=6;
                    }
                    else if(keycount>6)
                      {
                        keycount=6;
                        keyoverflag=1;//key overflow                       
                      }
                }
                else if(key==12)//delete key
                  {
                    if(keycount>0)
                      {
                        keycount--;
                        getps[keycount]=0;
                        dispbuf[keycount+2]=16;
                      }
                      else
                        {
                          keyoverflag=1;
                        }

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