51单片机AT89S52 LCD 24C02密码锁代码

ID:674637 · 发表于 2022-5-14 01:32

51单片机密码锁

单片机源程序如下:

//包含头文件
#include <REG51.h>
#include<intrins.h>
//宏定义
#define LCM_Data P0 //将P0口定义为LCM_Data
#define uchar unsigned char
#define uint unsigned int
//1602的控制脚
sbit lcd1602_rs=P2^5;
sbit lcd1602_rw=P2^6;
sbit lcd1602_en=P2^7;
sbit Scl=P3^4; //24C02串行时钟
sbit Sda=P3^5; //24C02串行数据
sbit ALAM = P2^1; //报警
sbit KEY = P3^6; //开锁
bit pass=0; //密码正确标志
bit ReInputEn=0; //重置输入允许标志
bit s3_keydown=0; //3秒按键标志位
bit key_disable=0; //锁定键盘标志
unsigned char countt0,second; //t0中断计数器,秒计数器
void Delay5Ms(void); //声明延时函数
unsigned char code a[]={0xFE,0xFD,0xFB,0xF7}; //控盘扫描控制表
//液晶显示数据数组
unsigned char code start_line[] = {"password: "};
unsigned char code name[] = {"===Coded Lock==="}; //显示名称
unsigned char code Correct[] = {" correct "}; //输入正确
unsigned char code Error[] = {" error "}; //输入错误
unsigned char code codepass[] = {" pass "};
unsigned char code LockOpen[] = {" open "}; //OPEN
unsigned char code SetNew[] = {"SetNewWordEnable"};
unsigned char code Input[] = {"input: "}; //INPUT
unsigned char code ResetOK[] = {"ResetPasswordOK "};
unsigned char code initword[] = {"Init password..."};
unsigned char code Er_try[] = {"error,try again!"};
unsigned char code again[] = {"input again "};
unsigned char InputData[6]; //输入密码暂存区
unsigned char CurrentPassword[6]={0,0,0,0,0,0}; //读取EEPROM密码暂存数组
unsigned char TempPassword[6];
unsigned char N=0; //密码输入位数记数
unsigned char ErrorCont; //错误次数计数
unsigned char CorrectCont; //正确输入计数
unsigned char ReInputCont; //重新输入计数
unsigned char code initpassword[6]={0,0,0,0,0,0}; //输入管理员密码后将密码初始为000000
unsigned char code adminpassword[6]={1,3,1,4,2,0}; //输入管理员密码后将密码初始为000000
//=====================5ms延时==============================
void Delay5Ms(void)
{
unsigned int TempCyc = 5552;
while(TempCyc--);
}
//===================400ms延时==============================
void Delay400Ms(void)
{
unsigned char TempCycA = 5;
unsigned int TempCycB;
while(TempCycA--)
{
TempCycB=7269;
while(TempCycB--);
}
}
//=============================================================================================
//================================24C02========================================================
//=============================================================================================
void mDelay(uint t) //延时
{
uchar i;
while(t--)
{
for(i=0;i<125;i++)
{;}
}
}
void Nop(void) //空操作
{
_nop_(); //仅作延时用一条语句大约1us
_nop_();
_nop_();
_nop_();
}
/*****24c02程序参照24c02时序图*****/
/*起始条件*/
void Start(void)
{
Sda=1;
Scl=1;
Nop();
Sda=0;
Nop();
}
/*停止条件*/
void Stop(void)
{
Sda=0;
Scl=1;
Nop();
Sda=1;
Nop();
}
/*应答位*/
void Ack(void)
{
Sda=0;
Nop();
Scl=1;
Nop();
Scl=0;
}
/*反向应答位*/
void NoAck(void)
{
Sda=1;
Nop();
Scl=1;
Nop();
Scl=0;
}
/*发送数据子程序，Data为要求发送的数据*/
void Send(uchar Data)
{
uchar BitCounter=8;
uchar temp;
do
{
temp=Data; //将待发送数据暂存temp
Scl=0;
Nop();
if((temp&0x80)==0x80) //将读到的数据&0x80
Sda=1;
else
Sda=0;
Scl=1;
temp=Data<<1; //数据左移
Data=temp; //数据左移后重新赋值Data
BitCounter--; //该变量减到0时，数据也就传送完成了
}
while(BitCounter); //判断是否传送完成
Scl=0;
}
/*读一字节的数据，并返回该字节值*/
uchar Read(void)
{
uchar temp=0;
uchar temp1=0;
uchar BitCounter=8;
Sda=1;
do
{
Scl=0;
Nop();
Scl=1;
Nop();
if(Sda) //数据位是否为1
temp=temp|0x01; //为1 temp的最低位为1（|0x01，就是将最低位变为1）
else //如果为0
temp=temp&0xfe; //temp最低位为0（&0xfe（11111110）最低位就是0）
if(BitCounter-1) //BitCounter减1后是否为真
{
temp1=temp<<1; //temp左移
temp=temp1;
}
BitCounter--; //BitCounter减到0时，数据就接收完了
}
while(BitCounter); //判断是否接收完成
return(temp);
}
void WrToROM(uchar Data[],uchar Address,uchar Num)
{
uchar i;
uchar *PData;
PData=Data;
for(i=0;i<Num;i++)
{
Start();
Send(0xa0);
Ack();
Send(Address+i);
Ack();
Send(*(PData+i));
Ack();
……………………
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Keil代码与Proteus7.5仿真下载:

密码锁（AT89S52 LCD 24C02).zip (127.98 KB, 下载次数: 31)

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