lock.c

单片机实现4×4键盘及8位数码管显示构成的电子密码锁

                } 
              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; 
                        } 
                  } 
                  else if(key==15)//enter key 
                    { 
                      if(keycount!=pslen) 
                        { 
                          errorflag=1; 
                          rightflag=0; 
                          second3=0; 
                        } 
                        else 
                          { 
                            for(i=0;i<keycount;i++) 
                              { 
                                if(getps[i]!=ps[i]) 
                                  { 
                                    i=keycount; 
                                    errorflag=1; 
                                    rightflag=0; 
                                    second3=0; 
                                    goto a3; 
                                  } 
                              } 
                            errorflag=0; 
                            rightflag=1; 
a3:                          i=keycount; 
                          } 
                    } 
              temp=temp & 0x0f;              
              while(temp!=0x0f) 
                { 
                  temp=P3; 
                  temp=temp & 0x0f;              
                } 
              keyoverflag=0;
            } 
        } 
  
      P3=0xff; 
      P3_7=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=0; 
                    break; 
                  case 0x0d: 
                    key=13; 
                    break; 
                  case 0x0b: 
                    key=14; 
                    break; 
                  case 0x07: 
                    key=15; 
                    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; 
                        } 
                  } 
                  else if(key==15)//enter key 
                    { 
                      if(keycount!=pslen) 
                        { 
                          errorflag=1; 
                          rightflag=0; 
                          second3=0; 
                        } 
                        else 
                          { 
                            for(i=0;i<keycount;i++) 
                              { 
                                if(getps[i]!=ps[i]) 
                                  { 
                                    i=keycount; 
                                    errorflag=1; 
                                    rightflag=0; 
                                    second3=0; 
                                    goto a2; 
                                  } 
                              } 
                            errorflag=0; 
                            rightflag=1; 
a2:                          i=keycount; 
                          } 
                    } 
              temp=temp & 0x0f;              
              while(temp!=0x0f) 
                { 
                  temp=P3; 
                  temp=temp & 0x0f;              
                } 
              keyoverflag=0;
            }                          
        } 
      
    } 
} 
void t0(void) interrupt 1 using 0 
{ 
  TH0=(65536-500)/256; 
  TL0=(65536-500)%256; 
  
  flashcount++; 
  if(flashcount==8) 
    { 
      flashcount=0; 
      P0=dispcode[dispbuf[dispcount]]; 
      P2=dispbit[dispcount]; 
      dispcount++; 
      if(dispcount==8) 
        { 
          dispcount=0; 
        } 
    } 
  
  if((errorflag==1) && (rightflag==0)) 
    { 
      bb++; 
      if(bb==800) 
        { 
          bb=0; 
          alarmflag=~alarmflag; 
        } 
      if(alarmflag==1)//sound alarm signal 
        { 
          P1_7=~P1_7; 
        } 
  
      aa++; 
      if(aa==800)//light alarm signal 
        { 
          aa=0; 
          P1_0=~P1_0; 
        } 
      second3++; 
      if(second3==6400) 
        { 
          second3=0; 
          errorflag=0; 
          rightflag=0; 
          alarmflag=0; 
          bb=0; 
          aa=0; 
        }      
    } 
    else if((errorflag==0) && (rightflag==1)) 
      { 
        P1_0=0; 
        cc++; 
        if(cc<1000) 
          { 
            okflag=1; 
          } 
          else if(cc<2000) 
            { 
              okflag=0; 
            } 
            else 
              { 
                errorflag=0; 
                rightflag=0; 
                P1_7=1; 
                cc=0; 
                oka=0; 
                okb=0; 
                okflag=0; 
                P1_0=1; 
              } 
        if(okflag==1) 
          { 
            oka++; 
            if(oka==2) 
              { 
                oka=0; 
                P1_7=~P1_7; 
              } 
          } 
          else 
            { 
              okb++; 
              if(okb==3) 
                { 
                  okb=0; 
                  P1_7=~P1_7; 
                } 
            } 
      } 
  
  if(keyoverflag==1) 
    { 
      P1_7=~P1_7; 
    } 
}