lock.c

4×4键盘及8位数码管显示构成的电子密码锁

			 #include <AT89X52.H> 
  
unsigned char ps[]={1,2,3,4,5}; 
  
unsigned char code dispbit[]={0xfe,0xfd,0xfb,0xf7, 
                              0xef,0xdf,0xbf,0x7f}; 
unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66, 
                               0x6d,0x7d,0x07,0x7f,0x6f, 
                               0x77,0x7c,0x39,0x5e,0x79,0x71, 
                               0x00,0x40,0x73,0xff}; 
unsigned char dispbuf[8]={18,16,16,16,16,16,16,16}; 
unsigned char dispcount; 
unsigned char flashcount; 
unsigned char temp; 
unsigned char key; 
unsigned char keycount; 
unsigned char pslen=5; 
unsigned char getps[6]; 
bit keyoverflag; 
bit errorflag; 
bit rightflag; 
unsigned int second3; 
unsigned int aa,bb; 
unsigned int cc; 
bit okflag; 
bit alarmflag; 
bit hibitflag; 
unsigned char oka,okb; 
  
  
void main(void) 
{ 
  unsigned char i,j; 
  
  TMOD=0x01; 
  TH0=(65536-500)/256; 
  TL0=(65536-500)%256; 
  TR0=1; 
  ET0=1; 
  EA=1; 
  
  while(1) 
    { 
      P3=0xff; 
      P3_4=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=7; 
                    break; 
                  case 0x0d: 
                    key=8; 
                    break; 
                  case 0x0b: 
                    key=9; 
                    break; 
                  case 0x07: 
                    key=10; 
                    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]) 	  //密码错误
                                  { 
                                    i=keycount; 
                                    errorflag=1; 
                                    rightflag=0; 
                                    second3=0; 
                                    goto a; 
                                  } 
                              } 
                            errorflag=0; 
                            rightflag=1; 
a:                          i=keycount; 
                          } 
                    } 
              temp=temp & 0x0f;              
              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; 
                        } 
                  } 
                  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 a4; 
                                  } 
                              } 
                            errorflag=0; 
                            rightflag=1; 
a4:                          i=keycount; 
                          } 
                    } 
              temp=temp & 0x0f;              
              while(temp!=0x0f) 
                { 
                  temp=P3; 
                  temp=temp & 0x0f;              
                } 
              keyoverflag=0;
            } 
        } 
  
      P3=0xff; 
      P3_6=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=1; 
                    break; 
                  case 0x0d: 
                    key=2; 
                    break; 
                  case 0x0b: 
                    key=3; 
                    break; 
                  case 0x07: 
                    key=12; 
                    break;