实物图：
仿真原理图如下（proteus仿真工程文件可到本帖附件中下载）
矩阵键盘按键说明
1 2 3 确认键
4 5 6 手动关闭锁
7 8 9 修改密码
密码还原 0 删除键 退出键
接电磁锁说明:
本身是不带电磁锁的，买家可以自己外接也可以和我们联系购买。如果要接电磁锁的话，需要外接电磁锁的电源，我们是用的12V的电磁锁，外接了12V的直流电源，照片和视频里面没有拍出来。
请买家自己要理解的是继电器只是相当一个开关，只是开和关，上面是没有电压和电流的，需要自己外接电磁锁的电源。
买多少V的电磁锁就要买多少V的直流电源供电。
单片机源程序如下:
- #include <reg52.h> //调用单片机头文件
- #define uchar unsigned char //无符号字符型 宏定义 变量范围0~255
- #define uint unsigned int //无符号整型 宏定义 变量范围0~65535
- #include "lcd1602.h"
- #include "iic.h"
- uchar value,i; //变量
- uchar flag_lj_en; //边加
- uchar flag_lj_en_value;
- sbit relay = P2^2; //继电器定义
- sbit beep = P3^3; //蜂鸣器定义
- sbit beiguan = P2^3; //背光
- uint flag_time;
- uint flag_guan;
- uchar smg_i;
- uchar dis_smg[7]={0};
- uchar password[7]={6,5,4,3,2,1}; //密码保存
- uchar password_bj[7]={1,2,3,4,5,6}; //密码比较
- uchar code password_r[6] = {1,2,3,1,2,3} ;
- uchar code password_gl[6] = {5,2,0,0,2,5} ;
- uchar password_xg[6]; //密码修改
- uchar flag_password; //密码正确否
- uchar flag_password_cichu1;//密码错误次数
- bit flag_200ms=1; //200ms标志位
- uchar key_can;
- uchar menu_1,menu_i;
- #include "iic.h"
- /***********************1ms延时函数*****************************/
- void delay_1ms(uint q)
- {
- uint i,j;
- for(i=0;i<q;i++)
- for(j=0;j<120;j++);
- }
- void key() //独立按键程序
- {
- static uchar key_new = 0, key_l;
- key_can = 20; //按键值还原
- P1 = 0x0f;
- if((P1 & 0x0f) != 0x0f) //按键按下
- {
- delay_1ms(1); //按键消抖动
- if(((P1 & 0x0f) != 0x0f) && (key_new == 1))
- { //确认是按键按下
- key_new = 0;
- key_l = (P1 | 0xf0); //矩阵键盘扫描
- P1 = key_l;
- switch(P1)
- {
- case 0xee: key_can = 1; break; //得到按键值
- case 0xde: key_can = 4; break; //得到按键值
- case 0xbe: key_can = 7; break; //得到按键值
- case 0x7e: key_can = 10; break; //得到按键值
-
- case 0xed: key_can = 0; break; //得到按键值
- case 0xdd: key_can = 8; break; //得到按键值
- case 0xbd: key_can = 5; break; //得到按键值
- case 0x7d: key_can = 2; break; //得到按键值
-
- case 0xeb: key_can = 3; break; //得到按键值
- case 0xdb: key_can = 6; break; //得到按键值
- case 0xbb: key_can = 9; break; //得到按键值
- case 0x7b: key_can = 11; break; //得到按键值
-
- case 0xe7: key_can = 15; break; //得到按键值
- case 0xd7: key_can = 14; break; //得到按键值
- case 0xb7: key_can = 13; break; //得到按键值
- case 0x77: key_can = 12; break; //得到按键值
- }
- }
- }
- else
- {
- key_new = 1;
- flag_lj_en = 0;
- }
- }
- /*****************密码还原********************/
- void password_return()
- {
-
- if(flag_lj_en == 1)
- {
- flag_lj_en_value ++;
- if(flag_lj_en_value > 13) //按下3秒钟就自动密码还原
- {
- flag_lj_en_value = 0;
- flag_lj_en = 0;
- write_24c02_8(6,0,password_r);
- beep = 0;
- delay_1ms(500);
- beep = 1;
- read_24c02_8(6,0,password);
- }
- }
- }
- /***************把数组清空**********************/
- void clear_shuzu(uchar *p)
- {
- for(i=0;i<7;i++)
- p[i] = 0;
- }
- /*************定时器0初始化程序***************/
- void time_init()
- {
- EA = 1; //开总中断
- TMOD = 0X01; //定时器0、工作方式1
- ET0 = 1; //开定时器0中断
- TR0 = 1; //允许定时器0定时
- }
- /******************下载程序密码初始化**********************/
- void password_chushifa()
- {
- scl = 0;
- value = read_24c02(10) ;
- if(value != 75)
- {
- value = 75;
- beep = 0;
- write_24c02(10,value);
- delay_1ms(200);
- write_24c02_8(6,0,password_r);
- delay_1ms(200);
- read_24c02_8(6,0,password);
- beep = 1;
- }
- }
- /****************按键功能处理********************/
- void key_with()
- {
- static uchar value;
- if(key_can == 14) //手动关闭密码锁
- relay = 1;
- if(key_can == 10) //用做密码从新回到初始值
- {
- flag_lj_en = 1; //连加使能
- flag_lj_en_value = 0;
- }
- if(menu_1 == 0)
- {
- if(key_can <= 9)
- if(menu_i < 6) //密码输入
- {
- menu_i ++;
- if(menu_i > 6)
- menu_i = 6;
- smg_i = menu_i;
- for(i=6;i>0;i--)
- password_bj[i] = password_bj[i-1];
- password_bj[0] = key_can;
- for(i=0;i<smg_i;i++)
- dis_smg[i] ='*';//0x30 + password_bj[i];
- write_string(2,7,dis_smg);
- lcd1602_guanbiao(1,7 + menu_i + 0x40); //开光标
- }
- if(key_can == 11) //密码删除
- {
- for(i=0;i<menu_i;i++)
- password_bj[i] = password_bj[i+1];
- menu_i --;
- password_bj[menu_i] = ' ';
- dis_smg[menu_i] = ' ';
- write_string(2,7,dis_smg);
- lcd1602_guanbiao(1,7 + menu_i + 0x40); //开光标
- }
- if(key_can == 15) //确认键
- {
- value = 0;
- for(i=0;i<6;i++)
- {
- if(password_bj[i] == password_gl[i]) //判断管理员密码
- {
- value ++;
- if(value >= 6) //密码正确
- {
- write_string(2,0," return ");
- beep = 0;
- delay_1ms(200);
- read_24c02_8(6,0,password);
- beep = 1;
- delay_1ms(2000);
- }
- }
- }
- if(value < 6)
- for(i=0;i<6;i++)
- {
- if(password_bj[i] == password[i])
- {
- flag_password = 1; //密码正确
- relay = 0; //打开密码锁
- for(i=0;i<6;i++)
- dis_smg[i] = 0xbf;
- }
- else
- {
- flag_password = 0;
- flag_password_cichu1 ++;
- write_string(1,0," Password error ");
- write_string(2,0," cishu: ");
- write_sfm2(2,9,flag_password_cichu1);
- delay_1ms(280);
-
- for(i=0;i<6;i++)
- {
- beep = ~beep;
- delay_1ms(200);
- }
- beep = 1;
- delay_1ms(800);
- break; //密码不正确
- }
- }
- clear_shuzu(dis_smg);
- write_string(1,0," Password Lock ");
- write_string(2,0," Input: ");
- lcd1602_guanbiao(1,7+0x40); //开光标
- menu_i = 0;
- }
- }
- }
- /****************修改密码********************/
- void xiugai_password()
- {
- if(key_can == 13) //修改密码
- {
- if((relay == 0) && (menu_1 == 0))
- {
- menu_1 = 1; menu_i = 0;
- clear_shuzu(password_bj); //数据清空
- clear_shuzu(dis_smg);
- write_string(1,0,"Input1: ");
- write_string(2,0,"Input2: ");
- lcd1602_guanbiao(1,7); //开光标
- }
- }
- if(menu_1 == 1) //第一次输入修改的密码
- {
- if(key_can <= 9)
- {
- if(menu_i < 6)
- {
- menu_i ++;
- if(menu_i > 6)
- menu_i = 6;
- smg_i = menu_i;
- for(i=7;i>0;i--)
- password_bj[i] = password_bj[i-1];
- password_bj[0] = key_can;
- for(i=0;i<menu_i;i++)
- dis_smg[i] ='*';
- write_string(1,7,dis_smg);
- lcd1602_guanbiao(1,7 + menu_i); //开光标
- }
- }
- if(key_can == 11) //删除键
- {
- for(i=0;i<menu_i;i++)
- password_bj[i] = password_bj[i+1];
- menu_i --;
- password_bj[menu_i] = ' ';
- dis_smg[menu_i] = ' ';
- write_string(1,7,dis_smg);
- lcd1602_guanbiao(1,7 + menu_i); //开光标
- }
- if(key_can == 15) //确定键
- {
- clear_shuzu(password_xg);
- clear_shuzu(dis_smg);
- lcd1602_guanbiao(1,8 + 0x40); //开光标
- menu_1 = 2;
- menu_i = 0;
- key_can = 20;
- }
- }
- if(menu_1 == 2) //第二次输入修改的密码
- {
- if(key_can <= 9)
- {
- if(menu_i < 6)
- {
- menu_i ++;
- if(menu_i > 6)
- menu_i = 6;
- for(i=5;i>0;i--)
- password_xg[i] = password_xg[i-1];
- password_xg[0] = key_can;
- for(i=0;i<menu_i;i++)
- dis_smg[i] ='*';//0x30 + password_xg[i];
- write_string(2,7,dis_smg);
- lcd1602_guanbiao(1,7 + menu_i + 0x40); //开光标
- }
- }
- if(key_can == 11) //删除键
- {
- for(i=0;i<menu_i;i++)
- password_xg[i] = password_xg[i+1];
- password_xg[menu_i] = ' ';
- dis_smg[menu_i] = ' ';
- write_string(2,7,dis_smg);
- lcd1602_guanbiao(1,7 + menu_i + 0x40); //开光标
- }
- if(key_can == 15) //确定键
- {
- for(i=0;i<6;i++)
- {
- if(password_bj[i] == password_xg[i])
- {
- flag_password = 1; //两次输入的密码一样
- }
- else
- {
- flag_password = 0;
- write_string(1,0," Password Error ");
- write_string(2,0," reenter ");
- delay_1ms(300);
- for(i=0;i<6;i++)
- {
- beep = ~beep; //提示三声
- delay_1ms(300);
- }
- beep = 1;
- delay_1ms(1000);
- break; //密码不正确
- }
- }
- if(flag_password == 1) //两次输入的密码一样的
- {
- for(i=0;i<6;i++)
- {
- write_string(1,0," Password ");
- write_string(2,0," Succeed ");
- password[i] = password_bj[i]; //保存密码
- }
- write_24c02_8(6,0,password);
- delay_1ms(300);
- beep = 0;
- delay_1ms(2000);
- beep = 1;
- }
- clear_shuzu(password_xg);
- clear_shuzu(dis_smg);
- write_string(1,0," Password Lock ");
- write_string(2,0," Input: ");
- lcd1602_guanbiao(1,7+0x40); //开光标
- menu_1 = 0;
- menu_i = 0;
- }
- }
- }
- /******************主程序**********************/
- void main()
- {
- static uint value ;
- password_chushifa();
- time_init(); //定时器初始化
- read_24c02_8(6,0,password);
- init_1602();
- beiguan = 0;
- while(1)
- {
- if(flag_password_cichu1 < 3) //错误三次按键不能用了
- {
- key(); //按键函数
- if(key_can < 20)
- {
- if(beiguan == 0)
- {
- if(menu_1 == 0)
- key_with(); //按键处理函数
- xiugai_password(); //修改密码
- }
- else
- beiguan = 0;
- flag_time = 0;
- }
- }
- if(flag_200ms == 1)
- {
- flag_200ms = 0;
- if(beiguan == 0) //延时关闭锁20秒关闭背光
- {
- ……………………
- …………限于本文篇幅 余下代码请从51黑下载附件…………
仿真程序等资料,密码123123:
单片机电子密码锁 1602.7z
(2.12 MB, 下载次数: 360)
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