基于51单片机+12864中文液晶+GSM的智能家居报警系统

一个经典的单片机课程设计。

主要用到的模块和资源有：LCD12864中文液晶模块，at24c02存储器模块用于存用户密码，ds18b20温度传感器模块，ISD1802语音模块用于语音报警，红外接收探头，用于接收红外键盘的信息、矩阵键盘4*4、红外势热，用于检测人体，GSM模块用于发送报警短信或者拨打用户手机等。IO口输入输出、串口发送。

编译环境：Uv4 for c51

主要的文件有：

#ifndef _GLOBAL_
	#define _GLOBAL_
	#include<reg52.h>
	#define uint unsigned int
	#define uchar unsigned char
	
	sbit led=P2^0;
	sbit beep=P2^3;
	sbit Play=P2^4;
	sbit PlayL=P2^5;
	#include "key.h"
	#include "ds18b20.h"
	#include "12864.h"
	#include "at24c02.h"
	#include "app.h"
	#include "gsm.h"
	#include "hongwai.h"
	#include "heat.h"
#endif

1、矩阵扫描程序：（分别扫描行列）

#include "key.h"

#define key P1 
 bit getnew = 0; 
uchar keynum;

code uchar keyout[4] = {0x7f,0xbf,0xdf,0xef}; 
uchar Input_Code(void)
{
	getnew = 0; 
	key_input();
	if(getnew == 1)
	{
		getnew = 0;
		switch (keynum)
		{
			case 1:return 'D';break;
			case 2:return 'C';break;
			case 3:return 'B';break;
			case 4:return 'A';break;
			case 5:return '#';break;
			case 6:return '9';break;
			case 7:return '6';break;
			case 8:return '3';break;
			case 9:return '0';break;
			case 10:return '8';break;
			case 11:return '5';break;
			case 12:return '2';break;
			case 13:return '*';break;
			case 14:return '7';break;
			case 15:return '4';break;
			case 16:return '1';break;
           		default:return keynum;break;
		}
	}
	else return 0;
	
}
static void key_input(void) 
{
	uchar i;
	key = 0X0F;
	if((key|0XF0) != 0XFF)
	{
		delay(10);
		if((key|0XF0) != 0XFF)
		{
			for(i = 0;i < 4;i++)
			{
				key = keyout[i];
				keynum = key;
				while((key|0XF0) != 0XFF);
				switch(keynum|0XF0)
				{
					case 0XF7:
						keynum = (i*4+1);
						getnew = 1;
						return ;break;
					case 0XFB:
						keynum = (i*4+2);
						getnew = 1;
						return ;break;
					case 0XFD:
						keynum = (i*4+3);
						getnew = 1;
						return ;break;
					case 0XFE:
						keynum = (i*4+4);
						getnew = 1;
						return ;break;
				}
			}
		}
	}
}

2、温度传感器读取温度

#include"DS18B20.h"

int temp; 
float temp_get()  
{
  float tt;
  uchar a,b;
  temp_start();
  temp_reset();
  temp_delay(1);
  temp_writebyte(0xcc);  
  temp_writebyte(0xbe); 
  a=temp_readbyte();
  b=temp_readbyte();
  temp=b;
  temp<<=8;
  temp=temp|a;
  tt=temp*0.0625;
  tt=(uint)(tt*10+0.5);
  tt=tt/10;
  return tt;
}


static void temp_delay(uint count)      
{
  uint i;
  while(count)
  {
    i=200;
    while(i>0)
    i--;
    count--;
  }
}
static void temp_reset(void)      
{
  uint i;
  DS=0;
  i=103;
  while(i>0)i--;
  DS=1;
  i=4;
  while(i>0)i--;
}

static bit temp_readbit(void)     
{
   uint i;
   bit dat;
   DS=0;i++; 
   DS=1;i++;i++;
   dat=DS;
   i=8;while(i>0)i--;
   return (dat);
}

static uchar temp_readbyte(void)   
{
  uchar i,j,dat;
  dat=0;
  for(i=1;i<=8;i++)
  {
    j=temp_readbit();
    dat=(j<<7)|(dat>>1);   
  }
  return(dat);
}
static void temp_writebyte(uchar dat)   
{
  uint i;
  uchar j;
  bit testb;
  for(j=1;j<=8;j++)
  {
    testb=dat&0x01;
    dat=dat>>1;
    if(testb)     
    {
      DS=0;
      i++;i++;
      DS=1;
      i=8;while(i>0)i--;
    }
    else
    {
      DS=0;       
      i=8;while(i>0)i--;
      DS=1;
      i++;i++;
    }

  }
}
static void temp_start(void)   
{
  temp_reset();
  temp_delay(1);
  temp_writebyte(0xcc);  
  temp_writebyte(0x44); 
}

//static void temp_readrom() 
//{
//  uchar sn1,sn2;
//  temp_reset();
//  temp_delay(1);
//  temp_writebyte(0x33);
//  sn1=temp_readbyte();
//  sn2=temp_readbyte();
//}

3、12864液晶显示

#include "12864.h"

sbit LCD_RS  =  P3^5;          
sbit LCD_RW  =  P3^6;            
sbit LCD_EN  =  P3^7;          
sbit LCD_PSB =  P2^1;  
#define delay_nop(); {_nop_();_nop_();_nop_();_nop_();};
#define data_port P0

void delay(uint ms)
{      
	uchar i;
	while(ms--)
	{
		for(i=0;i<120;i++);
	}
}
void lcd_init()		
{ 
	 LCD_PSB = 1;         
	 lcd_writecmd(0x34);      
	 delay(5);
	 lcd_writecmd(0x30);      
	 delay(5);
	 lcd_writecmd(0x0C);     
	 delay(5);
	 lcd_writecmd(0x01);      
	 delay(5);
}

void lcd_clean(void)
{
	lcd_writecmd(0x01);      
	delay(5);
}

void lcd_show(uchar x, uchar y,uchar *cn) 
{
	uchar i = 0;
	lcd_pos(x,y);;
    	while(cn[i] != '\0')
       lcd_writedata(cn[i++]);
}



bit lcd_busy()		
 {                          
	bit result;
	LCD_RS = 0;
	LCD_RW = 1;
	LCD_EN = 1;
	delay_nop();
	result = (bit)(P0&0x80);
	LCD_EN = 0;
	return(result); 
 }
 
void lcd_pos(uchar x,uchar y)		
{                          
   uchar  pos;
   if (y==0)
     {y=0x80;}
   else if (y==1)
     {y=0x90;}
   else if (y==2)
     {y=0x88;}
   else if (y==3)
     {y=0x98;}
   pos = x+y ;  
   lcd_writecmd(pos);    
}

void lcd_writecmd(uchar cmd)		
{                          
	while(lcd_busy());
	LCD_RS = 0;
	LCD_RW = 0;
	LCD_EN = 0;
	_nop_();
	_nop_(); 
	data_port = cmd;
	delay_nop();
	LCD_EN = 1;
	delay_nop();
	LCD_EN = 0;  
}
void lcd_writedata(uchar dat)		
{                          
	while(lcd_busy());
	LCD_RS = 1;
	LCD_RW = 0;
	LCD_EN = 0;
	data_port = dat;
	delay_nop();
	LCD_EN = 1;
	delay_nop();
	LCD_EN = 0; 
}

4、红外键盘输入

/*
Óõ½Òý½Å: 3.2
Óõ½ÍâÉè: ¶¨Ê±Æ÷0 ¡¢ÍⲿÖÐ¶Ï 0
Ïȵ÷ÓÃir_init()½øÐгõʼ»¯,ÔÙµ÷ÓÃir_get()µÃµ½ºìÍâ½ÓÊÕµÄÖµ
*/
#include "hongwai.h"

uchar irtime;		/*ÓÃÓÚ¼Æʱ*/
uchar ir_data;	/*ºìÍâ×îºóµÄµ½µÄÖµ*/
uchar ircord[4];	/*´æ·Å½âµÃµÄÂð*/
uchar irdata[33];		/*´æ·ÅºìÍâÂë*/
static bit startflag = 0; 	/*ÊÇ·ñ¿ªÊ¼´¦Àí±ê־λ*/
static bit getnew = 0; 

void HW_Init(void)		/*ºìÍâ³õʼ»¯*/
{
	timer0_init();
	EX0_init();
}
uchar HW_get(void)	/*·µ»ØºìÍâµÃµ½µÄÖµ*/
{	
	if(getnew == 1)
	{
		getnew = 0;
		switch (ir_data)
		{
			case 0x16:return '0';break;
			case 0x0c:return '1';break;
			case 0x18:return '2';break;//2
			case 0x5e:return '3';break;//3
			case 0x08:return '4';break;//4
			case 0x1c:return '5';break;
			case 0x5a:return '6';break;
			case 0x42:return '7';break;
			case 0x52:return '8';break;
			case 0x4a:return '9';break;
			case 0x19:return '*';break;
			case 0x0d:return '#';break;
           		default:return ir_data;break;
		}
	}
	else return 0;
}

/*ÄÚ²¿º¯Êý*/
static void timer0_init(void)		/*¶¨Ê±Æ÷0³õʼ»¯*/
{
	TMOD|=0x02;/*¶¨Ê±Æ÷0¹¤×÷·½Ê½2£¬TH0ÊÇÖØ×°Öµ£¬TL0ÊdzõÖµ*/
	TH0=0x00;/*ÖØÔØÖµ*/
	TL0=0x00; /*³õʼ»¯Öµ*/
	ET0=1;/*¿ªÖжÏ*/
	TR0=1;
}

static void EX0_init(void)		/*ÍⲿÖжÏ0³õʼ»¯*/
{
	IT0 = 1;/*Ö¸¶¨ÍⲿÖжÏ0ϽµÑØ´¥·¢£¬INT0 (P3.2)*/
	EX0 = 1;/*ʹÄÜÍⲿÖжÏ*/
	EA = 1;/*¿ª×ÜÖжÏ*/
}

static void ircordpro(void)		/*ºìÍâÂëÖµ´¦Àíº¯Êý*/
{ 
 	uchar i, j, k;
	uchar value;
	 k=1;
	 for(i=0;i<4;i++) /*´¦ÀíÒ»¶ÎºìÍâÂë4¸ö×Ö½Ú*/
	{
		for(j=1;j<=8;j++) /*´¦Àí1¸ö×Ö½Ú8λ*/
		{
			/*´óÓÚijֵΪ1£¬Õâ¸öºÍ¾§ÕñÓоø¶Ô¹Øϵ£¬ÕâÀïʹÓÃ12M¼ÆË㣬´ËÖµ¿ÉÒÔÓÐÒ»¶¨Îó²î*/
			if(irdata[k]>7)value|=0x80;
			if(j<8)value>>=1;
			k++;
		}
		ircord[i]=value;
		value=0;     
	} 
	 if(ircord[2] == ~ircord[3])
	 {
		 ir_data = ircord[2];
		 getnew = 1;
	 }
}

/*Öжϴ¦Àíº¯Êý*/
void tim0_isr (void) interrupt 1 using 1
{
	irtime++;	/*ÓÃÓÚ¼ÆÊý2¸öϽµÑØÖ®¼äµÄʱ¼ä*/
}
void EX0_ISR (void) interrupt 0	/*ÍⲿÖжÏ0·þÎñº¯Êý*/
{
	static uchar  i;             /*½ÓÊÕºìÍâÐźŴ¦Àí*/
	if(startflag)                         
	{
		if(irtime<63&&irtime>=33)i=0;		/*Òýµ¼Âë TC9012µÄÍ·Â룬9ms+4.5ms*/
		irdata[i]=irtime;		/*´æ´¢Ã¿¸öµçƽµÄ³ÖÐøʱ¼ä£¬ÓÃÓÚÒÔºóÅжÏÊÇ0»¹ÊÇ1*/
		irtime=0;
		i++;
		if(i==33)
		{
			i=0;
			ircordpro();		/*ºìÍâÂëÖµ´¦Àí*/
		}
	}
	else
	{
		irtime=0;
		startflag=1;
	}
}

5、GSM发送短信

#include "gsm.h"


/*********************************************************** 
º¯ÊýÃû³Æ£ºPrint_Char 
º¯Êý¹¦ÄÜ£º·¢Ë͵¥¸ö×Ö·û     
          Èë¿Ú²ÎÊý:ch      ³ö¿Ú²ÎÊý£ºÎÞ 
***********************************************************/
void Print_Char(uchar ch)//·¢Ë͵¥¸ö×Ö·û
{
	SBUF=ch; //ËÍÈ뻺³åÇø
	while(!TI); //µÈ´ý·¢ËÍÍê±Ï
	TI=0; //Èí¼þÇåÁã
}

/*********************************************************** 
º¯ÊýÃû³Æ£ºPrint_Str 
º¯Êý¹¦ÄÜ£º·¢ËÍ×Ö·û´®     
          Èë¿Ú²ÎÊý:*str    ³ö¿Ú²ÎÊý£ºÎÞ 
***********************************************************/
void Print_Str(uchar *str1)//·¢ËÍ×Ö·û´®
{

		unsigned char i = 0;
		while(str1[i] != '\0')
		{
		   SBUF = str1[i];
		   while(!TI);     // µÈÌØÊý¾Ý´«ËÍ
		   TI = 0;      // Çå³ýÊý¾Ý´«ËͱêÖ¾
		   i++;      // ÏÂÒ»¸ö×Ö·û
		}

}


 
/*********************************************************** 
º¯ÊýÃû³Æ£ºIni_UART 
º¯Êý¹¦ÄÜ£º´®¿Ú³õʼ»¯¡¢¶¨Ê±Æ÷³õʼ»¯     
          Èë¿Ú²ÎÊý:ÎÞ     ³ö¿Ú²ÎÊý£ºÎÞ 
***********************************************************/ 
void Init_UART(void)//´®¿Ú³õʼ»¯¡¢¶¨Ê±Æ÷³õʼ»¯
{
		TMOD=0x20;
		TH1=0xfa;
		TL1=0xfa;     //UART²¨ÌØÂÊÉèÖÃ:9600 
		TR1=1;
		SM0=0;
		SM1=1;
		REN=1;
		EA=1;
		PCON=0x80;
}
 


void Send_Message(void)
{		
	lcd_clean();
	lcd_show(0,0,"    °²È«¾¯¸æ");
	lcd_show(0,1,"±¨¾¯¶ÌÐÅ·¢ËÍÖÐ..");
	
	Print_Str("AT+CNMI=2,1");
	Print_Str("\r\n");

	delay(200);
	Print_Str("AT+CMGF=1");
	Print_Str("\r\n");
	delay(200);

	Print_Str("AT+CMGS=\"1111111111\"");//phone number
	Print_Str("\r\n");
	delay(1000);
	Print_Str("Smart House System: Warning, your house is under danger! ");
	Print_Char(0x1a);    //·¢ËͶÌÐÅ  
	delay(10);
	lcd_show(0,2,"    ÒÑ·¢ËÍ");
	delay(2000);
	lcd_clean();
}
//	Print_Str("AT+CPMS=\"SM\"");
//	delay(1000);

6、AT24C02存储器芯片（IIC接口）

#include "at24c02.h"

sbit sda=P2^7;                         
sbit scl=P2^6;


void nop()
{
	_nop_();
	_nop_();
}

//void delay1(unsigned int m)
//{	
//	unsigned int n;
//  	for(n=0;n<m;n++);
//}

void AT24C02_Init()  
{
	scl=1;
	nop();
	sda=1;
	nop();
}

void start()       
{
	sda=1;
	nop();
	scl=1;
	nop();
	sda=0;
	nop();
	scl=0;
	nop();
}

void stop()        
{
	sda=0;
	nop();
	scl=1;
	nop();
	sda=1;
	nop();
}

void writebyte(unsigned char j)  
{
	unsigned char i,temp;
   	temp=j;
   	for (i=0;i<8;i++)
   {
	   temp=temp<<1;
	   scl=0;
	   nop();
	   sda=CY;		
	   nop();
	   scl=1;		
	   nop();
   }
   scl=0;
   nop();
   sda=1;
   nop();
}

unsigned char readbyte()   
{
   unsigned char i,j,k=0;
   scl=0; nop(); sda=1;
   for (i=0;i<8;i++)
   {  
		nop(); scl=1; nop();
      	if(sda==1) 
		j=1;
      	else
		j=0;
      	k=(k<<1)|j;
	  	scl=0;
	}
   	nop();
	return(k);
}

void clock()         
{
   unsigned char i=0;
   scl=1;
   nop();
   while((sda==1)&&(i<255))
   	  i++;
   scl=0;
   nop();
}


uchar read24c02( uchar address)
{
   unsigned char i;
   start();
   writebyte(0xa0);
   clock();
   writebyte(address);
   clock();
   start();
   writebyte(0xa1);
   clock();
   i=readbyte();
   stop();
   delay(10);
   return(i);
}


//void write24c02(unsigned char address,unsigned char info)
//{
//   start();
//   writebyte(0xa0);
//   clock();
//   writebyte(address);
//   clock();
//   writebyte(info);
//   clock();
//   stop();
//   delay(500); 
//}

主要业务逻辑函数app.c

#include "app.h"
uchar CodeInput[5]=0;		//keyborad input
uchar CodeRead[5];			//at24c02 read
//uint ErrorTime = 0;			//input wrong code
uint Lock_STA=1;

/*ϵͳ¹¤×÷½çÃæ*/
void Main_Menu(void)
{
	lcd_show(0,0,"ÖÇÄܼҾӱ¨¾¯ÏµÍ³");
	if(Lock_STA){
		lcd_show(0,1,"    ¹¤×÷ÖÐ..");
		lcd_show(0,2,"°´ÈÎÒâ¼üÊäÈëÃÜÂë: ");
	}
}

/*Óû§Ö÷½çÃæ*/
void Wel_Menu()
{	
	uchar key_temp='0';
	uint cnt=0;
	Lock_STA=0;				//ÄܽøÈ뻶ӭҳÃ棬֤Ã÷ÒѾ­½âËø
	
		lcd_clean();
		lcd_show(0,0,"    ÌøתÖÐ..");
		delay(800);
	lcd_clean();
	lcd_show(1,0,"Welcome Home");
		lcd_show(0,1,"ζȣº");
		lcd_show(4,1,"¡æ");
//	lcd_show(0,1,"°´* ¼üÍ˳ö");
//	lcd_show(0,2,"°´D ¼ü·¢ËͶÌÐÅ");
	while(1){
		if(cnt%100 == 0)		/*ÿ1 ÃëË¢Ò»´ÎζÈ*/
		{	
			cnt=0;
			Get_Temperture();
	
		}
		cnt++;
		delay(10);
		lcd_show(0,2,"°´* ¼üÖØÐÂÉÏËø");
		if(Input_Code()=='*') {Lock_STA=1;break;}
//		key_temp=Input_Code();//||HW_get();
//		switch(key_temp){
//			case '1': ;break;					//code Adjust
//			case '*': Lock_STA=1;return;break;					//lock again
//			case '#': ;break;					
//			case 'A': ;break;
//			default: break;
//		}
	}
	lcd_show(3,3,"ÒÑËø¶¨");
	delay(500);
}
/*¶ÁȡζȲ¢ÏÔʾ*/
void Get_Temperture()
{
			uchar temp_num = 0;		/*ÓÃÓÚ´¢´æζÈÖµ*/
			uchar tempstr[3] = 0;		/*ÓÃÓÚ´¢´æζÈÖµ×Ö·û´®*/
			temp_num = temp_get();
			tempstr[0] = (temp_num/10)+'0';
			tempstr[1] = (temp_num%10)+'0';
			tempstr[2] = '\0';
			lcd_show(3,1,tempstr);
}
/*ÊäÈëÃÜÂ룬ÒÔ#ºÅ¼ü½áÊø*/
void Code_Input()
{
	uchar key_temp='0',tempcode[2]=0;
	uint cnt=0,count=0;
	while(key_temp!='#'){
		if(((key_temp=Input_Code())!=0)||((key_temp=HW_get())!=0)){				
			tempcode[0]=key_temp;
			tempcode[1]='\0';
			lcd_show(cnt,3,tempcode);
			CodeInput[cnt]=key_temp;
			cnt++;
			if(cnt>=8)cnt=0;
			led=~led;
		}
	}
	cnt--;
	CodeInput[cnt]='\0';
//	lcd_show(4,3,CodeInput);
}

//void Code_Init()
//{	
//	uint cnt_24=0;
//	for(cnt_24=0;cnt_24<4;cnt_24++){		//дÈë³õʼÃÜÂë
//		write24c02(cnt_24+16,'1');
//	}
//}

void Read_Code()
{

	uint cnt_24,count=0;
	for(cnt_24=0;cnt_24<4;cnt_24++){		//´Ó´æ´¢Æ÷¶ÁÃÜÂë
		CodeRead[count]=read24c02(cnt_24+16);
		count++;
	}
	CodeRead[count]='\0';
//	lcd_show(0,3,CodeRead);
}

//Input Code Accepted, return 1;
int  Code_Judge()
{//CodeRead:´Ó´æ´¢Æ÷¶Áµ½µÄÃÜÂë
 //CodeInput:´Ó¼üÅÌÊäÈëµÄÃÜÂë
	uint i;
	Read_Code();
	for(i=0;i<sizeof(CodeRead);i++){
		if(CodeInput[i]==CodeRead[i])		
			continue;
		else break;
	}
	if(i>=sizeof(CodeRead))	return 1;
	else	return 0;
}

void USER_Ammited()
{
	uint ErrorCnt=0;
	while(1)
	{
		lcd_clean();
		Main_Menu();			//main menu 
		Code_Input();			//key in code
	
		if(Code_Judge()){				//ÃÜÂëÑéÖ¤	
			break;	
		}			
		else{
				ErrorCnt++;
				if(ErrorCnt>=3) 
					{Vol_Display();Send_Message();return;}		//ÃÜÂëÊäÈë´ÎÊý³¬¹ý3´Î£¬·¢Ëͱ¨¾¯¶ÌÐÅ
				lcd_show(0,2,"ÃÜÂë´íÎó£¬ÇëÖØÊÔ");
				beep = 0;
				delay(2000);
				beep = ~beep;
		}
	}	
	Wel_Menu();					//enter welcome menu
}

void Vol_Display()
{
	Play=1;
	Play=0;
	Play=0;
}

void Heat_Warning()
{//
	uchar temp_num = 0;			
	temp_num = temp_get();
	if(temp_num=='50'||temp_num=='51'||temp_num=='52')
		Send_Message();
}