密码锁

ID:270029 · 发表于 2018-1-2 17:17

//-----------------------------------------------------------------
//原始程序中相邻两位密码不能相同.
//本压缩包中的HEX由修改后的新程序编译生成,允许输入任意密码.
//-----------------------------------------------------------------
//实训100例中本例内的main函数可用以下代码替换.
//改动的主要是main函数中while循环内的代码.
//-----------------------------------------------------------------
// 主程序
//-----------------------------------------------------------------
void main()
{
uchar i = 0;
uchar IIC_Password[10];
uchar IS_Valid_User = 0;
P0 = 0xFF;
P1 = 0xFF;
P2 = 0xFF;

TMOD = 0x02;                   //T0设置为8位自动重装模式
TH0 = 175;
TL0 = 175;
TR0 = 1;                      //启动T0

DelayMS(10);
LCD_Init();                   //初始化LCD

IIC_24C04_Init();             //初始化24C04

Display_String(Title_Text,0x00); //在第1行显示标题

//24C04的内容已由初始化BIN文件导入
//将24C04中预先写入的密码读入pass
RecString(0xa0, 0 , IIC_Password, 6);
IIC_Password[6] = '\0';

while(1)
{
   P1 = 0xF0;
   if(P1 != 0xF0) KeyNo = Keys_Scan();  //扫描键盘获取键序号KeyNo

   switch ( KeyNo )
   {
         case 0:  case 1: case 2: case 3: case 4:
         case 5:  case 6: case 7: case 8: case 9:

               if ( i<= 5 )          //密码限制在6位以内
               {
                     //如果i为0则执行一次清屏
                     if (i ==0) Display_String("             ",0x40);

                     UserPassword[i] = KeyNo + '0';
                     UserPassword[i+1] = '\0';

                     DSY_BUFFER[i] = '*';
                     DSY_BUFFER[i+1] = '\0';

                     Display_String(DSY_BUFFER,0x40);

                     i++;
                  }
                  break;

         case 10: //按A键开锁
                  if (strcmp(UserPassword,IIC_Password) == 0)
                  {
                     LED_OPEN = 0;  //点亮LED
                     Clear_Password();
                     Display_String("Unlock OK!    ",0x40);
                     IS_Valid_User = 1;
                  }
                  else
                  {
                     LED_OPEN =1; //关闭LED
                     Clear_Password();
                     Display_String("ERROR !       ",0x40);
                     IS_Valid_User = 0;
                  }
                  i = 0;
                  break;

         case 11: //按B键上锁
                  LED_OPEN =1;
                  Clear_Password();
                  Display_String(Title_Text,0x00);
                  Display_String("             ",0x40);
                  i = 0;
                  IS_Valid_User = 0;
                  break;

         case 12: //按C键设置新密码
                  //如果是合法用户则提示输入新密码
                  if ( !IS_Valid_User ) Display_String("No rights !",0x40);
                  else
                  {
                     i = 0;
                     Display_String("New Password: ",0x00);
                     Display_String("             ",0x40);
                  }

                  break;

         case 13: //按D键保存新密码
                  if ( !IS_Valid_User ) Display_String("No rights !",0x40);
                  else
                  {
                     SendString(0xa0, 0 , UserPassword, 6);

                     //重新读入刚写的密码
                     RecString(0xa0, 0 , IIC_Password, 6);
                     IIC_Password[6] = '\0';

                     i = 0;
                     Display_String(Title_Text,0x00);
                     Display_String("Password Saved! ",0x40);
                  }

                  break;

         case 14: //按E键消除所有输入
                  i = 0;
                  Clear_Password();
                  Display_String("             ",0x40);
   }

   Beep();
   DelayMS(100);
   P1= 0xF0;
   while (P1 != 0xF0); //如果有键未释放则等待
   while (P1 == 0xF0); //如果没有再次按下按键则等待
}
}

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