1602.c

单片机密码锁c程序

#include <REG51.h>
#include<intrins.h>
#define LCM_Data  P0
#define uchar unsigned char 
#define uint  unsigned int
#define w 6				//定义密码位数
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 = P2^0;		//开锁

sbit open_led=P2^2;		//开锁指示灯

bit  operation=0;		//操作标志位
bit  pass=0;			//密码正确标志
bit  ReInputEn=0;		//重置输入充许标志	
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);

unsigned char code a[]={0xFE,0xFD,0xFB,0xF7}; 											//控盘扫描控制表

unsigned char code start_line[]	= {"password:       "};
unsigned char code name[] 	 	= {"Coded Management"};												//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[]	= {"      true      "};												//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]={1,3,1,4,2,0}; 														//当前密码值
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]={1,2,3,4,5,6};


//=====================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_();
 	_nop_();
 	_nop_();
 	_nop_();
}


/*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;
   		Scl=0;
   		Nop();
   		if((temp&0x80)==0x80)
   		Sda=1;
   		else 
   		Sda=0;
   		Scl=1;
   		temp=Data<<1;
   		Data=temp;
   		BitCounter--;
   	}
   	while(BitCounter);
   	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)
	temp=temp|0x01;
	else
	temp=temp&0xfe;
	if(BitCounter-1)
	{
	temp1=temp<<1;
	temp=temp1;
	}
	BitCounter--;
	}
	while(BitCounter);
	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();
  Stop();
  mDelay(20);
  }
}

void RdFromROM(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();
  Start();
  Send(0xa1);
  Ack();
  *(PData+i)=Read();
  Scl=0;
  NoAck();
  Stop();
  }
}


//==================================================================================================
//=======================================LCD1602====================================================
//==================================================================================================

#define yi 0x80 //LCD第一行的初始位置,因为LCD1602字符地址首位D7恒定为1（100000000=80）
#define er 0x80+0x40 //LCD第二行初始位置（因为第二行第一个字符位置地址是0x40）


//----------------延时函数，后面经常调用----------------------
void delay(uint xms)//延时函数，有参函数
{
	uint x,y;
	for(x=xms;x>0;x--)
	 for(y=110;y>0;y--);
}

//--------------------------写指令---------------------------
write_1602com(uchar com)//****液晶写入指令函数****
{
	lcd1602_rs=0;//数据/指令选择置为指令
	lcd1602_rw=0; //读写选择置为写
	P0=com;//送入数据
	delay(1);
	lcd1602_en=1;//拉高使能端，为制造有效的下降沿做准备
	delay(1);
	lcd1602_en=0;//en由高变低，产生下降沿，液晶执行命令
}

//-------------------------写数据-----------------------------
write_1602dat(uchar dat)//***液晶写入数据函数****
{
	lcd1602_rs=1;//数据/指令选择置为数据
	lcd1602_rw=0; //读写选择置为写
	P0=dat;//送入数据
	delay(1);
	lcd1602_en=1; //en置高电平，为制造下降沿做准备
	delay(1);
	lcd1602_en=0; //en由高变低，产生下降沿，液晶执行命令
}

//-------------------------初始化-------------------------
void lcd_init(void)
{
	write_1602com(0x38);//设置液晶工作模式，意思：16*2行显示，5*7点阵，8位数据
	write_1602com(0x0c);//开显示不显示光标
	write_1602com(0x06);//整屏不移动，光标自动右移
	write_1602com(0x01);//清显示
}
//========================================================================================
//=========================================================================================




//==============将按键值编码为数值=========================
unsigned char coding(unsigned char m)	 
{
	unsigned char k;
	
	switch(m)
	{
		case (0x18): k=1;break;
		case (0x28): k=2;break;
		case (0x48): k=3;break;
		case (0x88): k='A';break;
		case (0x14): k=4;break;
		case (0x24): k=5;break;
		case (0x44): k=6;break;
		case (0x84): k='B';break;
		case (0x12): k=7;break;
		case (0x22): k=8;break;
		case (0x42): k=9;break;
		case (0x82): k='C';break;
		case (0x11): k='*';break;
		case (0x21): k=0;break;
		case (0x41): k='#';break;
		case (0x81): k='D';break;
	}
	return(k);
}


//=====================按键检测并返回按键值===============================
unsigned char keynum(void)
{
 	unsigned char row,col,i;
 	P1=0xf0;
 	if((P1&0xf0)!=0xf0)
 	{
	   	Delay5Ms();
        Delay5Ms();
   		if((P1&0xf0)!=0xf0)
		{
    		row=P1^0xf0;          //确定行线
			i=0;
			P1=a[i];	          //精确定位
			while(i<4)
			{
	 			if((P1&0xf0)!=0xf0)
	  			{
	   				col=~(P1&0xff);	  //确定列线
	   				break;            //已定位后提前退出   
	  			}
				else 
	  			{
	   				i++;
	   				P1=a[i];
	  			}
			}
		}
		else 
		{
			return 0;
		}
	
		while((P1&0xf0)!=0xf0);

		return (row|col);	 		//行线与列线组合后返回
 	}
 	else return 0;	         		//无键按下时返回0
}




//=======================一声提示音，表示有效输入========================
void OneAlam(void)
{
	ALAM=0;
	Delay5Ms();
    ALAM=1;
}

//========================二声提示音，表示操作成功========================
void TwoAlam(void)
{
	ALAM=0;
	Delay5Ms();
    ALAM=1;
    Delay5Ms();
	ALAM=0;
	Delay5Ms();
    ALAM=1;
}

//========================三声提示音,表示错误========================
void ThreeAlam(void)
{
	ALAM=0;
	Delay5Ms();
    ALAM=1;
    Delay5Ms();
	ALAM=0;
	Delay5Ms();
    ALAM=1;
    Delay5Ms();
	ALAM=0;
	Delay5Ms();
    ALAM=1;

}

//=====================显示输入的N个数字，用H代替以便隐藏============================
void DisplayOne(void)
{
//	DisplayOneChar(9+N,1,'*');
	write_1602com(yi+5+N);
	write_1602dat('*');
}

//=======================显示提示输入=========================
void DisplayChar(void)
{
	unsigned char i;
	if(pass==1)
	{
		//DisplayListChar(0,1,LockOpen);
		write_1602com(er);
		for(i=0;i<16;i++)
		{
			write_1602dat(LockOpen[i]);	
		}
	}
	else
	{
		if(N==0)
		{
			//DisplayListChar(0,1,Error);
			write_1602com(er);