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3*4矩阵键盘简单lcd1602密码锁控制

智凡单片机2019-06-1751单片机51970

不好意思啊兄弟只能先把你写到这里了跟真实的密码锁功能上相差甚远

不过应该满足了你的要求

还有之前你要求的3*3键盘只有9个数字但是0~9是十个数字所以键盘我改成了4*3的

上电后显示000

3*4矩阵键盘简单密码锁控制
确认按下小灯亮

//2013/6/16 待完善
//3*4矩阵键盘简单密码锁控制

//使用上电默认显示000
// uchar D[ ]={1,1,1}; //设定密码
//74HC573做驱动

#include <reg51.h>
#define   uchar  unsigned  char
#define   uint  unsigned  int
#define  date  P1
sbit  wei=P3^0;
sbit  duan=P3^1;
sbit  h1=P1^0;
sbit  h2=P1^1;
sbit  h3=P1^2;
sbit  h4=P1^3;    //行信号
uchar  keynum;
uchar num;
uchar D[ ]={1,1,1};      //设定密码
uchar  code  table[]={0xc0,0xf9,0xa4,
       0x0b0,0x99,0x92,
       0x82,0xf8,0x80,0x90, //0~9段码
       0XFF,0XFF}; //确认键/取消键关闭显示
void  delay()
{
   uchar  i,j;
   for(j=10;j>0;j--)
     for(i=33;i>0;i--);
}
void  delayms(uint x)
{
   uchar  i;
     for(i=x;i>0;i--)
  delay();
}

void  initshuma()
{
     wei=1;
  P0=0x07;
  wei=0;
     duan=1;
     P0=table[0];
  duan=0;
}

void  keyscan_time0() interrupt 1       //几十个ms扫描一次键盘
{

  TR0=0;
  date=0X0F;
  if((date&0x0F)!=0x0F)
  delayms(10);
  if((date&0x0F)!=0x0F)
  {

    date=0x3f; //1
    if(h1==0)
    {
    while(h1==0);
     keynum=0;
     num++;
    }

    if(h2==0)
    {
    while(h2==0);
    keynum=3;
    num++;
    }
    if(h3==0)
    {
    while(h3==0);
    keynum=6;
    num++;
    }
    if(h4==0)
    {
    while(h4==0);
    keynum=9;
    num++;
    }

    date=0x5f; //2
    if(h1==0)
    {
    while(h1==0);
    keynum=1;
    num++;
    }
    if(h2==0)
    {
    while(h2==0);
    keynum=4;
    num++;
    }
    if(h3==0)
    {
    while(h3==0);
    keynum=7;
    num++;
    }
    if(h4==0)
    {
    while(h4==0);
    keynum=10;
    num++;
    }

    date=0x6F; //3
    if(h1==0)
    {
     while(h1==0);

      keynum=2;
      num++;

    }
    if(h2==0)
     {
     while(h2==0);
     keynum=5;
     num++;
     }
    if(h3==0)
    {
    while(h3==0);
    keynum=8;
    num++;
    }

    if(h4==0)
    {
    while(h4==0);
    keynum=11;
    num++;
    }
    if(num>5)
    num=1;

     switch(num)
  {
   case 1: wei=1;
     P0=0x01;
     wei=0;
     break;

   case 2: wei=1;
     P0=0x02;
     wei=0;
     break;

   case 3: wei=1;
     P0=0x04;
     wei=0;
     break;
   default: break;
   }
   duan=1;
   P0=table[keynum];
   duan=0;

}
TR0=1;
TH0=(65536-100)/256;
TL0=(65536-100)%6;

}
void  main()
{

     EA=1;
  ET0=1;
  TMOD=0x01;
  TH0=(65536-100)/256;
  TL0=(65536-100)%6;
  TR0=1;
  keynum=0xff;              //初始化键值
  initshuma();
  while(1)
  {


    while(!((num==1)&(keynum==D[0])));
     while(!((num==2)&(keynum==D[1])));
         while(!((num==3)&(keynum==D[2]))); //与设定密码比较是否相同
             while(!(keynum==10));    //确认键
       P2=0XFE;
       while(!(keynum==11));    //取消键
       P2=0XFF;

   }
}