基于MCU的数字密码锁设计 第2页

基于MCU的数字密码锁设计 第2页
Ⅸ、源程序代码
#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
sbit P30=P3^0;
sbit spk=P2^1;
sbit led1=P2^6;
sbit led2=P2^7;
sbit jdq=P2^0;
uchar code dispcode[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,
                       0x8c,0x92,0x89,0xf9,0x8e,0x86,0xc8}; //段码值0~9,'p','f','e','n','s','h','i' 

uchar dispbuf[4];  //显示数组
uchar hour,min,sec,sec20;
uchar dispbit,count,keynum,keysec,keysec1;
bit id,flag,buzz,key1,key2,flag1,bit1,bit2;
uchar ps[4]={1,2,3,4};  //初始密码
uchar pw[4];            //密码数组，用于存放输入的密码，用于比较 
uchar keycount;
bit error,right,hibit;
uchar wr,ok,wr1,ok10; //密码锁标志
void disptime()       //显示数组更新
{if(flag)
 {dispbuf[0]=hour/10;
  dispbuf[1]=hour%10;
  dispbuf[2]=min/10;
  dispbuf[3]=min%10;
 }
}
void delayms(int ms)
{ uchar i;
  while(ms--)
  {
    for(i=0;i<250;i++);
    { _nop_();
      _nop_();
      _nop_();
      _nop_();
    }
  }
}
void sound()
{ spk=0;
  delayms(100);
  spk=1;
}
uchar key()        
{ uchar cl,ch,temp;
  P1=0xf0;
  if((P1&0xf0)!=0xf0)
  { delayms(10);
    if((P1&0xf0)!=0xf0)
    { cl=0xfe;
      while(cl&0x10)
      { P1=cl;
 if((P1&0xf0)!=0xf0)
 { ch=(P1&0xf0)|0x0f;
      temp=(~ch)|(~cl);
   while((P1&0xf0)!=0xf0)
   { if(temp==0x18)
         key1=1;
  if(temp==0x84)
   bit1=1;
        P1=0xf0;
      }
      key1=0;bit1=0; 
      if(keysec>2)
       key2=1;
   if(keysec1>2)
    bit2=1;
      keysec=0;keysec1=0;
   return (~ch)|(~cl);
 }
 else
 cl=(cl<<1)|0x01;
      }
     }
  }
  return 0;
}
uchar keyscan()
{ switch(key())
  { case 0x11:sound();return 0;
    case 0x21:sound();return 1;
    case 0x41:sound();return 2;
    case 0x81:sound();return 3;
    case 0x12:sound();return 4;
    case 0x22:sound();return 5;
    case 0x42:sound();return 6;
    case 0x82:sound();return 7;
    case 0x14:sound();return 8;
    case 0x24:sound();return 9;

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