庫函式（include）

#ifndef _INCLUDE_H_
#define _INCLUDE_H_

#define u16 unsigned int
#define u8 unsigned char
#define LED 4
#define ULN 5
#define WEI 6
#define DUAN 7


#include <STC15F2K60S2.H>
#include <intrins.h>
#include "smg.h"
#include "jp.h"
#include "iic.h"
#include "enable138.h"
#include "at24c02.h"


extern u16 timer;
extern u8 led;
extern bit door;
extern u16 count;


#endif

iic協議


#include "iic.h"


#define DELAY_TIME 5

#define SlaveAddrW 0xA0
#define SlaveAddrR 0xA1


sbit SDA = P2^1;  /* 資料線 */
sbit SCL = P2^0;  /* 時鐘線 */

void IIC_Delay(unsigned char i)
{
    do{_nop_();}
    while(i--);       
}

void IIC_Start(void)
{
    SDA = 1;
    SCL = 1;
    IIC_Delay(DELAY_TIME);
    SDA = 0;
    IIC_Delay(DELAY_TIME);
    SCL = 0;	
}


void IIC_Stop(void)
{
    SDA = 0;
    SCL = 1;
    IIC_Delay(DELAY_TIME);
    SDA = 1;
    IIC_Delay(DELAY_TIME);
}


void IIC_SendAck(bit ackbit)
{
    SCL = 0;
    SDA = ackbit;  					// 0應答，1非應答
    IIC_Delay(DELAY_TIME);
    SCL = 1;
    IIC_Delay(DELAY_TIME);
    SCL = 0; 
    SDA = 1;
    IIC_Delay(DELAY_TIME);
}


bit IIC_WaitAck(void)
{
    bit ackbit;
	
    SCL  = 1;
    IIC_Delay(DELAY_TIME);
    ackbit = SDA;
    SCL = 0;
    IIC_Delay(DELAY_TIME);
    return ackbit;
}

void IIC_SendByte(unsigned char byt)
{
    unsigned char i;

    for(i=0; i<8; i++)
    {
        SCL  = 0;
        IIC_Delay(DELAY_TIME);
        if(byt & 0x80) SDA  = 1;
        else SDA  = 0;
        IIC_Delay(DELAY_TIME);
        SCL = 1;
        byt <<= 1;
        IIC_Delay(DELAY_TIME);
    }
    SCL  = 0;  
}

unsigned char IIC_RecByte(void)
{
    unsigned char i, da;
    for(i=0; i<8; i++)
    {   
    	SCL = 1;
	IIC_Delay(DELAY_TIME);
	da <<= 1;
	if(SDA) da |= 1;
	SCL = 0;
	IIC_Delay(DELAY_TIME);
    }
    return da;    
}

AT24C02

#include "at24c02.h"

void Delay5ms()		//@12.000MHz
{
	unsigned char i, j;

	i = 59;
	j = 90;
	do
	{
		while (--j);
	} while (--i);
}


void at24c02_write(u8 add, u8 dat)	//add為地址  dat為資料 
{
	EA = 0;
	IIC_Start();
	IIC_SendByte(0xa0);
	IIC_WaitAck();
	IIC_SendByte(add);
	IIC_WaitAck();
	IIC_SendByte(dat);
	IIC_WaitAck();
	IIC_Stop();
	EA = 1;
	Delay5ms();
}
u8 at24c02_read(u8 add) 
{
	u8 dat;
	
	EA = 0;
	IIC_Start();
	IIC_SendByte(0xa0);
	IIC_WaitAck();
	IIC_SendByte(add);
	IIC_WaitAck();
	IIC_Start();
	IIC_SendByte(0xa1);
	IIC_WaitAck();
	dat = IIC_RecByte();
	IIC_SendAck(1);
	EA = 1;
	
	return dat;
}

//寫入多個資料
void at24c02_writestr(u8 start,u8 *pbuff, u8 num) 
{
	while(num)
	{
		at24c02_write(start,*pbuff);
		start++;
		pbuff++;
		num--;
	}
}
//讀出多個資料
void at24c02_readstr(u8 start, u8 *pbuff, u8 num)
{
	while(num)
	{
		*pbuff = at24c02_read(start);
		start++;
		pbuff++;
		num--;
	}

}

主程式

#include "include.h"

u16 timer = 0;
u8 led = 0xff;
u8 nkey;
bit door = 0; //01??? 11???
u16 count = 0;

void Timer0Init(void)		
{
	AUXR &= 0x7F;		
	TMOD &= 0xF0;		
	TL0 = 0x30;		
	TH0 = 0xF8;		
	TF0 = 0;		
	TR0 = 1;		
	ET0 = 1;		
	EA = 1;				//打開總開關
}


void allint() //初始化
{
	P0 = 0xff; //led全熄滅
	enable(LED);
	P0 = 0x00; //繼電器，蜂鳴器關閉
	enable(ULN);
	P0 = 0x00;	
	enable(WEI);
	P0 = 0xff;
	enable(DUAN);
}

void led_run() //led顯示
{
	P0 = led;
	enable(LED);
}


void main()
{
	Timer0Init();
	allint();
	at24c02_writestr(0x00,mima,6);    //將密碼寫入EEROM
	buff_change(32,32,32,32,32,32,32,32); //將數碼管熄滅
	while(1)
	{
		nkey = jp_buff();   //判斷鍵值
		_nop_();
		_nop_();
		if (nkey != 0) //存在按下 nkey不為0
			jp_choose(nkey);  //進行選擇
		
		if (scan)  //輸入密碼時的顯示
		{
			if (nnum == 0)
			{
				buff_change(36,32,32,32,32,32,32,32);
			}
			else if(nnum == 1)
			{
				buff_change(36,32,32,32,32,32,32,nmima[0]);
			}
			else if (nnum == 2)
			{
				buff_change(36,32,32,32,32,32,nmima[0],nmima[1]);
			}
			else if (nnum == 3)
			{
				buff_change(36,32,32,32,32,nmima[0],nmima[1],nmima[2]);
			}
			else if (nnum == 4)
			{
				buff_change(36,32,32,32,nmima[0],nmima[1],nmima[2],nmima[3]);
			}
			else if (nnum == 5)
			{
				buff_change(36,32,32,nmima[0],nmima[1],nmima[2],nmima[3],nmima[4]);
			}
			else if (nnum == 6 && tf == 2)
			{
				scan = 0;
				buff_change(36,32,nmima[0],nmima[1],nmima[2],nmima[3],nmima[4],nmima[5]);
				nnum = 0;
				
			}
		}
		else if (mscan)  // 修改密碼時的顯示
		{
			if (nnum == 0)
			{
				buff_change(12,32,32,32,32,32,32,32);
			}
			if(nnum == 1)
			{
				buff_change(12,32,32,32,32,32,32,nmima[0]);
			}
			else if (nnum == 2)
			{
				buff_change(12,32,32,32,32,32,nmima[0],nmima[1]);
			}
			else if (nnum == 3)
			{
				buff_change(12,32,32,32,32,nmima[0],nmima[1],nmima[2]);
			}
			else if (nnum == 4)
			{
				buff_change(12,32,32,32,nmima[0],nmima[1],nmima[2],nmima[3]);
			}
			else if (nnum == 5)
			{
				buff_change(12,32,32,nmima[0],nmima[1],nmima[2],nmima[3],nmima[4]);
			}
			else if (nnum == 6 )
			{
				
				buff_change(12,32,nmima[0],nmima[1],nmima[2],nmima[3],nmima[4],nmima[5]);
			}
		}
	}
}

void Tint0() interrupt 1 //2ms
{

	smg_display();
	led_run();
	if(timer++ == 500)  // 1s
	{
		timer = 0;
		if (count++ == 5)  // 5s
		{
			count = 0;	
			if (door == 0) // 門關 進入初始化狀態
			{
				led = 0xff;
				buff_change(32,32,32,32,32,32,32,32);
			}
			else if (door && notdo) // 門開啟狀態下 5秒沒有操作
			{
				door = 0;
				mscan = 0;
				P0 = 0x00;
				enable(ULN);
				buff_change(32,32,32,32,32,32,32,32);
			}
		}
	}
}

ENABLE138代碼

庫檔案就簡單地宣告

#include "enable138.h"


void enable(u8 x)
{
	P2&= 0x1f;
	P2|=(x << 5);
	_nop_();
	_nop_();
	P2&= 0x1f;
}

矩陣鍵盤

包括鍵值操作

#include "jp.h"

u8 KEY_UP=1;
u16 tf = 0; //0?′?D?? 1 ?? 2 ′í
u16 nnum = 0;
bit notdo = 1; //0 óD°′?ü2ù×÷￡?1??óD
bit mscan = 0; // 0 DT???′???ˉ￡? 1 DT?????ˉ
bit scan = 0; // 0?′ê?è?￡?1ê?è?


u8 mima[6]= {8,8,8,8,8,8};
u8 nmima[6] = {0};

void Delay7ms()		//@12.000MHz
{
	unsigned char i, j;

	i = 82;
	j = 179;
	do
	{
		while (--j);
	} while (--i);
}

//額外操作
void tf_true()
{
	P0 = 0x10;
	enable(ULN);
	door = 1; 
	notdo = 1;
	scan = 0;
	nnum = 0;
	buff_change(0,32,32,32,0,34,14,35); // open
}

void mima_buff() 
{
	u16 i;
	timer = 0;
	count = 0;
	
	//判斷對錯
	for (i = 0;i<6;i++)
	{
		if(mima[i]!= nmima[i])
		{
			tf = 2;
			break;
		}
		else
		{
			tf =1;
		}
	}
	
	if(tf == 1)
	{
		tf_true();
	}
	else if (tf == 2)
	{
		led = 0xfe;
	}	
}

//輸入存盤，只計入前6位
void nmima_scan(u8 key1)
{
	nmima[nnum] = key1;
	nnum++;
	if (nnum == 6)
		mima_buff();
}


//密碼修改 只計入前6位
void mima_scan(u8 key1)
{
	nmima[nnum] = key1;
	nnum++;
	if (nnum == 6)
	{
		door = 1;
		timer = 0;
		count = 0;
	}
}

void jp_choose(u8 keys)
{
	switch(keys)
	{
		case 1: 	//s7
		case 2: 	//s11
		case 3: 	//s15
		case 4: 	//s19
		case 5: 	//s6
		case 6: 	//s10
		case 7: 	//s14
		case 8: 	//s18
		case 9: 	//s5
		case 10: 	//s9
				if (scan)
					nmima_scan(keys - 1); 
				else if (mscan)
					mima_scan(keys - 1);
					break;
		case 14: 	//s8
			nnum = 0;
			break;
		case 15: 	//s12
			
			timer =0;
			count = 0;
			if(mscan && nnum >= 6) //確認修改的密碼
			{
				mscan = 0;
				buff_change(12,32,32,32,32,32,32,32);
				scan = 0;
				nnum = 0;
				at24c02_writestr(0x00,nmima,6);//將密碼寫入EEROM
				at24c02_readstr(0x00, mima,6);//讀取密碼存入密碼陣列
			}
			else if (door == 1) //進入修改模式 前提 門開
			{
				nnum = 0;
				mscan = 1;
				scan = 0;
			}
			break;
		case 16: 	//s16
			//進入輸入密碼模式
			scan = 1;
			door =0;
			mscan =0;
			P0 = 0x00;
			enable(ULN);
			break;
		default: 
			break;
	}
}

u8 jp_buff()
{
	u8 keyvalue= 0;//1~16
	u8 cache=0;
	u8 Hang=0;
	u8 Lie=0;
	
	
   P3&=0xc0;
   P3|=0x0f;
   P42=0;
   P44=0;

   if(((P3&0x0f)!=0x0f)&&(KEY_UP))
   {
		Delay7ms();
		P3&=0xc0;
	    P3|=0x0f;
	    P42=0;
	    P44=0;
		if(((P3&0x0f)!=0x0f)&&(KEY_UP))
		{
			KEY_UP=0;
			notdo = 0;
			cache=P3&0x0f;
			switch(cache)
			{
				case 0x0e:Hang=1; break;
				case 0x0d:Hang=2; break;
				case 0x0b:Hang=3; break;
				case 0x07:Hang=4; break;
			}
			P3&=0xf0;
			P3|=0x30;	
			P42=1;
			P44=1;

			if(P44==0) Lie=1;
			else if(P42==0)	Lie=2;
			else if(P35==0)	Lie=3;
			else if(P34==0)	Lie=4;

			keyvalue=Hang*4+Lie - 4;			
		}
   }
	P3&=0xc0;//bit5 bit4?′??
   	P3|=0x0f;//bit3~bit0????
   	P42=0;
   	P44=0;
	if(((P3&0x0f)==0x0f)&&(!KEY_UP))
	{
	 	KEY_UP=1;
		if (door)
			notdo = 1;
	}	
	return keyvalue;
}

數碼管顯示

#include "smg.h"


u8 code smgDU[37] ={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E,
//	                   0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F
					0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10,0x08,0x03,0x46,0x21,0x06,0x0E,
//	                0.   1.   2.   3.   4.   5.   6.   7.   8.   9.   A.   B.   C.   D.   E.   F.
					0xff,0xbf,0x8c,0xc8,0xf7};	
//                   ?e    -	p	n	  _
u8 smgWE[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};//????

static u16 num =0;
u16 smgbuff[8] = {32};

void buff_change(u16 d1,d2,d3,d4,d5,d6,d7,d8)//顯示內容轉換
{
	smgbuff[0] = d1;
	smgbuff[1] = d2;
	smgbuff[2] = d3;
	smgbuff[3] = d4;
	smgbuff[4] = d5;
	smgbuff[5] = d6;
	smgbuff[6] = d7;
	smgbuff[7] = d8;

}

void smg_display() //將數碼管顯示
{
	P0 = 0xff;
	enable(DUAN);
	P0 = smgWE[num];
	enable(WEI);
	P0 = smgDU[smgbuff[num]];
	enable(DUAN);
	
	num++;
	num &= 7;
}

部分變數為全域變數如 timer,count,notdo,scan,mscan,led,door,KEY_UP,mima[6],nmima[6],nnum.
因為在庫檔案中宣告，嫌代碼太多沒有放上，同時庫檔案中的部分函式宣告同理，請自己宣告，不懂可參考我的模板.
謝謝，

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