51单片机密码锁代码

原创于 2025-01-24 23:32:54 发布 · 1.6k 阅读

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CC 4.0 BY-SA版权

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#51单片机 #算法 #linux

基于液晶屏外设写的.

main.c

#include <REGX52.H>
#include "LCD1602.h"
#include "MatrixKey.h"
#include "Sleep.h"
long password=1234;
long resNum=0;
int status=0,res=0,k=1500;
long birth=2005;
void main(){
	LCD_Init();
	LCD_ShowString(1,1,"Input Password");
	LCD_ShowString(2,1,"Revise Password");
	while(1){
		int KeyNum=MatrixKey();
		if(KeyNum==11){
			status=1;
			resNum=0;
		}
		else if(KeyNum>=1&&KeyNum<=10&&(status==1||status==2||status==4)){
			resNum=resNum*10+KeyNum%10;
		}else if(KeyNum==12){
			status=2;
			resNum=0;
		}else if(KeyNum==13){
			status=0;
			resNum=0;
		}else if(KeyNum==14){
			if(status==1&&password==resNum){
				status=3;
				resNum=0;
			}else if(status==2&&password==resNum){
				status=4;
				resNum=0;
			}else if(status==3){
				status=0;
			}else if(status==4){
				password=resNum;
				resNum=0;
				status=0;
			}else if(password!=resNum){
				LCD_ShowString(1,1,"                ");
				LCD_ShowString(2,1,"                ");
				LCD_ShowString(1,1,"Wrong Number!");
				resNum=0;
				sleep(1500);
				LCD_ShowString(1,1,"                ");
				LCD_ShowString(2,1,"                ");
			}
		}
		if(res!=status){
			LCD_ShowString(1,1,"                ");
			LCD_ShowString(2,1,"                ");
			res=status;
		}
		if(resNum>=10000){
			LCD_ShowString(1,1,"                ");
			LCD_ShowString(2,1,"                ");
			LCD_ShowString(1,1,"Number is too long!");
			resNum=0;
			sleep(1500);
			LCD_ShowString(1,1,"                ");
			LCD_ShowString(2,1,"                ");
		}
		if(status==0){
			LCD_ShowString(1,1,"Input Password");
			LCD_ShowString(2,1,"Revise Password");
		}else if(status==1){
			LCD_ShowString(1,1,"Input Password");
			LCD_ShowNum(2,1,resNum,4);
		}else if(status==2){
			LCD_ShowString(1,1,"Input Old Password");
			LCD_ShowNum(2,1,resNum,4);
		}else if(status==3){
			LCD_ShowString(1,1,"My Birth");
			LCD_ShowNum(2,1,birth,4);
		}else if(status==4){
			LCD_ShowString(1,1,"Input New Password");
			LCD_ShowNum(2,1,resNum,4);
		}
		KeyNum=0;
	}
}

Matrix.c

#include <REGX52.H>
#include "Sleep.h"
int MatrixKey(){
	int KeyNumber=0,i=0,j=0;
	P1=0xFF;
	P1_3=0;
	if(P1_7==0){sleep(20);while(P1_7==0);sleep(20);KeyNumber=1;}
	if(P1_6==0){sleep(20);while(P1_6==0);sleep(20);KeyNumber=5;}
	if(P1_5==0){sleep(20);while(P1_5==0);sleep(20);KeyNumber=9;}
	if(P1_4==0){sleep(20);while(P1_4==0);sleep(20);KeyNumber=13;}
	P1_3=1;
	P1_2=0;
	if(P1_7==0){sleep(20);while(P1_7==0);sleep(20);KeyNumber=2;}
	if(P1_6==0){sleep(20);while(P1_6==0);sleep(20);KeyNumber=6;}
	if(P1_5==0){sleep(20);while(P1_5==0);sleep(20);KeyNumber=10;}
	if(P1_4==0){sleep(20);while(P1_4==0);sleep(20);KeyNumber=14;}
	P1_2=1;
	P1_1=0;
	if(P1_7==0){sleep(20);while(P1_7==0);sleep(20);KeyNumber=3;}
	if(P1_6==0){sleep(20);while(P1_6==0);sleep(20);KeyNumber=7;}
	if(P1_5==0){sleep(20);while(P1_5==0);sleep(20);KeyNumber=11;}
	if(P1_4==0){sleep(20);while(P1_4==0);sleep(20);KeyNumber=15;}
	P1_1=1;
	P1_0=0;
	if(P1_7==0){sleep(20);while(P1_7==0);sleep(20);KeyNumber=4;}
	if(P1_6==0){sleep(20);while(P1_6==0);sleep(20);KeyNumber=8;}
	if(P1_5==0){sleep(20);while(P1_5==0);sleep(20);KeyNumber=12;}
	if(P1_4==0){sleep(20);while(P1_4==0);sleep(20);KeyNumber=16;}
	P1_0=1;
	return KeyNumber;
}

Matrix.h

#ifndef __MATRIXKEY_H__
#define __MATRIXKEY_H__

int MatrixKey();

#endif

Sleep.c

void Delay1ms(void)	//@12.000MHz
{
	unsigned char data i, j;

	i = 2;
	j = 239;
	do
	{
		while (--j);
	} while (--i);
}
void sleep(int x){
	while(x--){
		Delay1ms();
	}
}

Sleep.h

#ifndef __SLEEP_H__
#define __SLEEP_H__

void sleep(int x);

#endif

LCD1602.c

#include <REGX52.H>

//引脚配置：
sbit LCD_RS=P2^6;
sbit LCD_RW=P2^5;
sbit LCD_EN=P2^7;
#define LCD_DataPort P0

//函数定义：
/**
  * @brief  LCD1602延时函数，12MHz调用可延时1ms
  * @param  无
  * @retval 无
  */
void LCD_Delay()
{
	unsigned char i, j;

	i = 2;
	j = 239;
	do
	{
		while (--j);
	} while (--i);
}

/**
  * @brief  LCD1602写命令
  * @param  Command 要写入的命令
  * @retval 无
  */
void LCD_WriteCommand(unsigned char Command)
{
	LCD_RS=0;
	LCD_RW=0;
	LCD_DataPort=Command;
	LCD_EN=1;
	LCD_Delay();
	LCD_EN=0;
	LCD_Delay();
}

/**
  * @brief  LCD1602写数据
  * @param  Data 要写入的数据
  * @retval 无
  */
void LCD_WriteData(unsigned char Data)
{
	LCD_RS=1;
	LCD_RW=0;
	LCD_DataPort=Data;
	LCD_EN=1;
	LCD_Delay();
	LCD_EN=0;
	LCD_Delay();
}

/**
  * @brief  LCD1602设置光标位置
  * @param  Line 行位置，范围：1~2
  * @param  Column 列位置，范围：1~16
  * @retval 无
  */
void LCD_SetCursor(unsigned char Line,unsigned char Column)
{
	if(Line==1)
	{
		LCD_WriteCommand(0x80|(Column-1));
	}
	else if(Line==2)
	{
		LCD_WriteCommand(0x80|(Column-1+0x40));
	}
}

/**
  * @brief  LCD1602初始化函数
  * @param  无
  * @retval 无
  */
void LCD_Init()
{
	LCD_WriteCommand(0x38);//八位数据接口，两行显示，5*7点阵
	LCD_WriteCommand(0x0c);//显示开，光标关，闪烁关
	LCD_WriteCommand(0x06);//数据读写操作后，光标自动加一，画面不动
	LCD_WriteCommand(0x01);//光标复位，清屏
}

/**
  * @brief  在LCD1602指定位置上显示一个字符
  * @param  Line 行位置，范围：1~2
  * @param  Column 列位置，范围：1~16
  * @param  Char 要显示的字符
  * @retval 无
  */
void LCD_ShowChar(unsigned char Line,unsigned char Column,char Char)
{
	LCD_SetCursor(Line,Column);
	LCD_WriteData(Char);
}

/**
  * @brief  在LCD1602指定位置开始显示所给字符串
  * @param  Line 起始行位置，范围：1~2
  * @param  Column 起始列位置，范围：1~16
  * @param  String 要显示的字符串
  * @retval 无
  */
void LCD_ShowString(unsigned char Line,unsigned char Column,char *String)
{
	unsigned char i;
	LCD_SetCursor(Line,Column);
	for(i=0;String[i]!='\0';i++)
	{
		LCD_WriteData(String[i]);
	}
}

/**
  * @brief  返回值=X的Y次方
  */
int LCD_Pow(int X,int Y)
{
	unsigned char i;
	int Result=1;
	for(i=0;i<Y;i++)
	{
		Result*=X;
	}
	return Result;
}

/**
  * @brief  在LCD1602指定位置开始显示所给数字
  * @param  Line 起始行位置，范围：1~2
  * @param  Column 起始列位置，范围：1~16
  * @param  Number 要显示的数字，范围：0~65535
  * @param  Length 要显示数字的长度，范围：1~5
  * @retval 无
  */
void LCD_ShowNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length)
{
	unsigned char i;
	LCD_SetCursor(Line,Column);
	for(i=Length;i>0;i--)
	{
		LCD_WriteData(Number/LCD_Pow(10,i-1)%10+'0');
	}
}

/**
  * @brief  在LCD1602指定位置开始以有符号十进制显示所给数字
  * @param  Line 起始行位置，范围：1~2
  * @param  Column 起始列位置，范围：1~16
  * @param  Number 要显示的数字，范围：-32768~32767
  * @param  Length 要显示数字的长度，范围：1~5
  * @retval 无
  */
void LCD_ShowSignedNum(unsigned char Line,unsigned char Column,int Number,unsigned char Length)
{
	unsigned char i;
	unsigned int Number1;
	LCD_SetCursor(Line,Column);
	if(Number>=0)
	{
		LCD_WriteData('+');
		Number1=Number;
	}
	else
	{
		LCD_WriteData('-');
		Number1=-Number;
	}
	for(i=Length;i>0;i--)
	{
		LCD_WriteData(Number1/LCD_Pow(10,i-1)%10+'0');
	}
}

/**
  * @brief  在LCD1602指定位置开始以十六进制显示所给数字
  * @param  Line 起始行位置，范围：1~2
  * @param  Column 起始列位置，范围：1~16
  * @param  Number 要显示的数字，范围：0~0xFFFF
  * @param  Length 要显示数字的长度，范围：1~4
  * @retval 无
  */
void LCD_ShowHexNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length)
{
	unsigned char i,SingleNumber;
	LCD_SetCursor(Line,Column);
	for(i=Length;i>0;i--)
	{
		SingleNumber=Number/LCD_Pow(16,i-1)%16;
		if(SingleNumber<10)
		{
			LCD_WriteData(SingleNumber+'0');
		}
		else
		{
			LCD_WriteData(SingleNumber-10+'A');
		}
	}
}

/**
  * @brief  在LCD1602指定位置开始以二进制显示所给数字
  * @param  Line 起始行位置，范围：1~2
  * @param  Column 起始列位置，范围：1~16
  * @param  Number 要显示的数字，范围：0~1111 1111 1111 1111
  * @param  Length 要显示数字的长度，范围：1~16
  * @retval 无
  */
void LCD_ShowBinNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length)
{
	unsigned char i;
	LCD_SetCursor(Line,Column);
	for(i=Length;i>0;i--)
	{
		LCD_WriteData(Number/LCD_Pow(2,i-1)%2+'0');
	}
}

LCD1602.h

#ifndef __LCD1602_H__
#define __LCD1602_H__

//用户调用函数：
void LCD_Init();
void LCD_ShowChar(unsigned char Line,unsigned char Column,char Char);
void LCD_ShowString(unsigned char Line,unsigned char Column,char *String);
void LCD_ShowNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length);
void LCD_ShowSignedNum(unsigned char Line,unsigned char Column,int Number,unsigned char Length);
void LCD_ShowHexNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length);
void LCD_ShowBinNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length);

#endif