#include <REGX52.H>
#include "Delay.h"
#include "LCD1602.h"
#include "MatrixKey.h"
unsigned char KeyNum;
unsigned int Password,Count;
void main()
{
LCD_Init();
LCD_ShowString(1,1,"Password:");
while(1)
{
KeyNum=MatrixKey();
if(KeyNum)
{
if(KeyNum<=10) //如果S1~S10按鍵按下，輸入密碼
{
if(Count<4) //如果輸入次數(shù)小于4
{
Password*=10; //密碼左移一位
Password+=KeyNum%10; //獲取一位密碼
Count++; //計次加一
}
LCD_ShowNum(2,1,Password,4); //更新顯示
}
if(KeyNum==11) //如果S11按鍵按下，確認
{
if(Password==2345) //如果密碼等于正確密碼
{
LCD_ShowString(1,14,"OK "); //顯示OK
Password=0; //密碼清零
Count=0; //計次清零
LCD_ShowNum(2,1,Password,4); //更新顯示
}
else //否則
{
LCD_ShowString(1,14,"ERR"); //顯示ERR
Password=0; //密碼清零
Count=0; //計次清零
LCD_ShowNum(2,1,Password,4); //更新顯示
}
}
if(KeyNum==12) //如果S12按鍵按下，取消
{
Password=0; //密碼清零
Count=0; //計次清零
LCD_ShowNum(2,1,Password,4); //更新顯示
}
}
}
}
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