用24C04與1602LCD設(shè)計(jì) 單片機(jī)電子密碼鎖程序

ID:482473 · 發(fā)表于 2022-3-27 16:02

//改動(dòng)的主要是main函數(shù)中while循環(huán)內(nèi)的代碼.
//-----------------------------------------------------------------
// 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設(shè)置為8位自動(dòng)重裝模式
TH0 = 175;
TL0 = 175;
TR0 = 1;                      //啟動(dòng)T0

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

IIC_24C04_Init();             //初始化24C04

Display_String(Title_Text,0x00); //在第1行顯示標(biāo)題

//24C04的內(nèi)容已由初始化BIN文件導(dǎo)入
//將24C04中預(yù)先寫(xiě)入的密碼讀入pass
RecString(0xa0, 0 , IIC_Password, 6);
IIC_Password[6] = '\0';

while(1)
{
   P1 = 0xF0;
   if(P1 != 0xF0) KeyNo = Keys_Scan();  //掃描鍵盤(pán)獲取鍵序號(hào)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 )          //密碼限制在6位以?xún)?nèi)
               {
                     //如果i為0則執(zhí)行一次清屏
                     if (i ==0) Display_String("             ",0x40);

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

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

                     Display_String(DSY_BUFFER,0x40);

                     i++;
                  }
                  break;

         case 10: //按A鍵開(kāi)鎖
                  if (strcmp(UserPassword,IIC_Password) == 0)
                  {
                     LED_OPEN = 0;  //點(diǎn)亮LED
                     Clear_Password();
                     Display_String("Unlock OK!    ",0x40);
                     IS_Valid_User = 1;
                  }
                  else
                  {
                     LED_OPEN =1; //關(guān)閉LED
                     Clear_Password();
                     Display_String("ERROR !       ",0x40);
                     IS_Valid_User = 0;
                  }
                  i = 0;
                  break;

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

         case 12: //按C鍵設(shè)置新密碼
                  //如果是合法用戶(hù)則提示輸入新密碼
                  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鍵保存新密碼
                  if ( !IS_Valid_User ) Display_String("No rights !",0x40);
                  else
                  {
                     SendString(0xa0, 0 , UserPassword, 6);

                     //重新讀入剛寫(xiě)的密碼
                     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鍵消除所有輸入
                  i = 0;
                  Clear_Password();
                  Display_String("             ",0x40);
   }

   Beep();
   DelayMS(100);
   P1= 0xF0;
   while (P1 != 0xF0); //如果有鍵未釋放則等待
   while (P1 == 0xF0); //如果沒(méi)有再次按下按鍵則等待
}
}

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用24C04與1602LCD設(shè)計(jì) 單片機(jī)電子密碼鎖程序

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