密码锁程序.c

基于AT89C51的密码锁

 #include<reg52.h>

 #define uint unsigned int
 #define uchar unsigned char
 #define KEY P3
 #define No_key 20
 #define lcddata P2

 sbit lcden=P1^2;
 sbit lcdrs=P1^0;
 sbit lcdrw=P1^1;
 sbit light=P1^3;
 sbit light1=P1^4;
 sbit sounder=P1^7;

 uchar j;
 uchar aa;

 uchar code table[]="Hello!";
 uchar code table1[]="OK!  ";
 uchar code table2[]="Enter please:";
 uchar code key_table[16]=
 {
   1,2,3,10,
   4,5,6,11,
   7,8,9,12,
   0,13,14,15
  };
 uchar password[]={1,2,3,4,5,6};
 uchar save[6];

 uchar conflag;
 uchar lockflag;
 uchar startflag;
  
 void delay(uint z);
 void wright_com(uchar com);
 void wright_data(uchar date);
 void init();
 void display_OK();

 void delete();

 uchar keyscan();

 void enter_code(uchar t);
 void confirm();

 void succeed_an();
 void fail_an();
 void lockkey();
 void alarm();
 void reset();
 void display_enter();

 void main(void)
 {
   uchar temp;

   init();
   while(1)
   {

   if(lockflag)
    {
	 temp=keyscan();
	 if(temp!=No_key)
	     {
		 aa=0;
		 }
	 }
	 else
	 {
	    temp=keyscan();

		if(temp!=No_key)
		{
		  if(temp==10)
		 {

		  reset();
		  startflag=1;
		  }
		  if(startflag)
		   {
		     enter_code(temp);

			  if(temp==13)
			    {
				  confirm();
				  if(conflag)
				  {
				    succeed_an();
					}
					else
					{
					  fail_an();
					  }
					  }
				if(temp==14)
				{
				delete();
				}
			  }
			     }
		   }
  }
  }

   void display_enter()
   {
     uchar num;
	 wright_com(0x80);
	 for(num=0;num<13;num++)
	   {
	   wright_data(table2[num]);
	   }
	}


	void display_OK()
	{
	    uchar num;
		wright_com(0x80);
		for(num=0;num<13;num++)
		  {
		   	  wright_data(table1[num]);
		 }

	}

	void delete()
	{
	wright_com(0x80+0x40+j);
	wright_data(' ');
	save[--j]=0;
	wright_com(0x80+0x40+j);
	}


	void reset()
	{
	 uchar num;
	 display_enter();
	 wright_com(0x80+0x40);
	 for(num=0;num<6;num++)
	    {
		 save[num]=0;
		 wright_data(' ');
		 }
	 wright_com(0x80+0x40);
	 lockflag=0;
	 conflag=0;
	 j=0;
	 }

	 void succeed_an()
	 {
	  light=0;
	  display_OK();
	  delay(8000);
	  light=1;
	  }


	  void fail_an()
	  {
	     alarm();
		 lockkey();
	  }


	   void alarm()
	   {
        sounder=0;
        delay(2000);
	   }

       void lockkey()
	   {
	   lockflag=1;
	   }

	   void enter_code(uchar t)
	   {
	    if(t>=0&&t<10)
		{  
		if(j==0)
		  {
		    wright_com(0x80+0x40);
			wright_data('*');
			}
			else
			{
			  wright_data('*');
			  }
			  save[j++]=t;
			}
		}



void confirm()
{
uchar k;
for(k=0;k<6;k++)
      {
	if(password[k]!=save[k])
	{
	break;
	}
      }
if(k==6)
   {
    conflag=1;	
   }
}




void timer0() interrupt 1
{
	  TH0=(65536-50000)/256;
       TL0=(65536-50000)%256;
       if(lockflag)
        {
		aa++;
		light1=0;
		if(aa>=60)
		{
		aa=0;
		light1=1;
		lockflag=0;

	}
	}
}

/******初始化*******/
void init()
{
	uchar num;
	TMOD=1;
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	ET0=1;
	EA=1;
	TR0=1;



	/*****1602初始化******/
	lcdrw=0;
		lcden=0;
		wright_com(0x38);
		wright_com(0x0c);

		wright_com(0x01);
		wright_com(0x80);
		for(num=0;num<9;num++)
			{
			wright_data(table[num]);
			delay(1);

			}
		}


        /*****1602xieruzhiling*****/
		void wright_com(uchar com)
		{
			lcdrs=0;
		lcddata=com;
		delay(1);
		lcden=1;
		delay(1);
		lcden=0;

		}



		/***1602xierushuju***/
		void wright_data(uchar date)
		{
			lcdrs=1;
		lcddata=date;
		delay(1);
		lcden=1;
		delay(1);
		lcden=0;
		}

		/****yanshihanshu ****/
		void delay(uint z)
		{
			uint x,y;
			for(x=z;x>0;x--)
				for(y=110;y>0;y--);
		}
        /****4*4juzhnejianpansaomiaohanshu****/

		uchar keyscan()
  		{
			    uchar temp,num=No_key;
			KEY=0xfe;
			temp=KEY;
			temp=temp&0xf0;
			while(temp!=0xf0)
			{

			delay(5);
			temp=KEY;
			temp=temp&0xf0;
			while(temp!=0xf0)
			{

			temp=KEY;
			switch(temp)
			{
			case 0xee:num=1;
			 break;
			case 0xde:num=2;
			 break;
            case 0xbe:num=3;
			  break;
			case 0x7e:num=10;
			  break;
			}
		while(temp!=0xf0)
		{
		 temp=KEY;
		 temp=temp&0xf0;
		}

	   }
	  }



	  /****saomiaodierhang****/
	  KEY=0xfd;
	  temp=KEY;
	  temp=temp&0xf0;
	  while(temp!=0xf0)
	   {
	    delay(5);
		temp=KEY;
		temp=temp&0xf0;
		while(temp!=0xf0)
		{

		 temp=KEY;
		switch(temp)
		{
		 case 0xed:num=4;
			 break;
		 case 0xdd:num=5;
			 break;


		 case 0xbd:num=6;
			  break;
		 case 0x7d:num=11;
			  break;
		 }
		 while(temp!=0xf0)
		 {
		  temp=KEY;
		  temp=temp&0xf0;
		  }
		 }
	    }


  /****saomiaodisanhang****/

		KEY=0xfb;
		temp=KEY;
		temp=temp&0xf0;
		while(temp!=0xf0)
		{
                 delay(5);
		 temp=KEY;
                 temp=temp&0xf0;
	  while(temp!=0xf0)
	      {
	  
		temp=KEY;
		switch(temp)
		{
		 case 0xeb:num=7;
			 break;
		 case 0xdb:num=8;
			 break;
                 case 0xbb:num=9;
			  break;
		 case 0x7b:num=12;
			  break;
		 }
		 while(temp!=0xf0)
		 {
		  temp=KEY;
		  temp=temp&0xf0;
		  }
		 }
	    }
  /****saomiaodisihang****/
		KEY=0xf7;
		temp=KEY;
		temp=temp&0xf0;
		while(temp!=0xf0)
		{
                 delay(5);
		 temp=KEY;
                 temp=temp&0xf0;
	  while(temp!=0xf0)
	      {
	  
		temp=KEY;
		switch(temp)
		{
		 case 0xe7:num=0;
			 break;
		 case 0xd7:num=13;
			 break;
                 case 0xb7:num=14;
			  break;
		 case 0x77:num=15;
			  break;
		 }
		 while(temp!=0xf0)
		 {
		  temp=KEY;
		  temp=temp&0xf0;
		  }
		 }
	    }

         return num;
    }