基于51单片机的密码锁设计程序

1、#include 1302.hvoid write_ds1302_byte(uchar dat)uchar i;for(i=0;i1;uchar read_ds1302_byte()uchar i;for(i=0;i1;acc7=t_io;t_clk=1;t_clk=0;return (acc);void write_ds1302_dat(uchar addr,uchar dat)t_en=0;t_clk=0;t_en=1;write_ds1302_byte(addr);write_ds1302_byte(dat);t_clk=1;t_en=0;uchar read_ds1302_data(u

2、char addr)uchar date;t_en=0;t_clk=0;t_en=1;write_ds1302_byte(addr);date=read_ds1302_byte();t_en=0;t_clk=0;return (date);void set_real_time(uchar *pclock)uchar i,addr=0x80; ea=0;write_ds1302_dat(0x8e,0x00);for(i=0;i7;i+)write_ds1302_dat(addr,*pclock);pclock+;addr+=2;/write_ds1302_dat(0x8e,0x80);ea=1;

3、void get_real_time(uchar curtime)uchar j;uchar address=0x81;ea=0;for(j=0;j7;j+) curtimej=read_ds1302_data(address);address+=2; ea=1;#ifndef _1302_h_#define _1302_h_#include #include#define uchar unsigned char#define uint unsigned intsbit t_io=p25;sbit t_clk=p24;sbit t_en=p10;sbit acc0=acc0;sbit acc7

4、=acc7;void write_ds1302_byte(uchar dat);uchar read_ds1302_byte();void write_ds1302_dat(uchar addr,uchar dat);uchar read_ds1302_data(uchar addr);void set_real_time(uchar *pclock);void get_real_time(uchar curtime);#endif #include delay.h #include 1602.h void lcd_busy_wait() /*lcd1602 忙等待*/ lcd_rs_port

5、 = 0; lcd_rw_port = 1; lcd_en_port = 1; lcd_data_port = 0xff; while (lcd_data_port&0x80); lcd_en_port = 0; void write_com(uchar command) /*lcd1602 命令字写入*/ lcd_busy_wait(); lcd_rs_port = 0; lcd_rw_port = 0; lcd_en_port = 0; lcd_data_port = command; lcd_en_port = 1; lcd_en_port = 0; void write_data(uc

6、har dat)lcd_busy_wait();lcd_rs_port=1;lcd_rw_port =0;lcd_en_port=0;p0=dat;lcd_en_port=1;lcd_en_port=0;void wtite_lcd_1602_dat(uchar x_pos,uchar y_pos,uchar dat)x_pos&=0x0f;y_pos&=0x01;if(y_pos=0)x_pos=x_pos+0x80;elsex_pos=x_pos+0x80+0x40;write_com(x_pos);lcd_busy_wait();lcd_rs_port=1;lcd_rw_port=0;l

7、cd_en_port=0;p0=dat;lcd_en_port=1;lcd_en_port=0;void lcd_init() /*lcd1602 初始化*/ lcd_delay(20); write_com(0x38); lcd_delay(100); write_com(0x38); lcd_delay(50); write_com(0x38); lcd_delay(10); write_com(0x08); write_com(0x01); write_com(0x06); write_com(0x0c); lcd_data_port = 0xff; /*释放数据端口*/#ifndef

8、_1602_h_#define _1602_h_#include #include#define uchar unsigned char#define uint unsigned intsbit lcd_rs_port=p35;sbit lcd_rw_port=p36;sbit lcd_en_port=p34;#define lcd_data_port p0void lcd_busy_wait();void write_com(uchar command);void write_data(uchar dat);void wtite_lcd_1602_dat(uchar x_pos,uchar

9、y_pos,uchar dat);void lcd_init();#endif#include 2402.h#include delay.hvoid i2c_start()scl=1;delay1();sda=1;delay1();sda=0;delay1();void i2c_stop()sda=0;delay1();scl=1;delay1();sda=1;delay1();void i2c_ack()uchar i;scl=1;delay1();while(sda=1)&(i250) i+;scl=0;delay1();void i2c_nack()scl=1;delay1();sda=

10、1;scl=0;delay1();void i2c_write_byte(uchar date)/uchar i,temp;temp=date;for(i=0;i8;i+)/ /temp=temp1;/scl=0; /delay1(); /sda=cy;/delay1();/scl=1;/ /scl=0; /delay1();/sda=1;/delay1();/uchar i2c_read_byte()uchar i,temp=0;scl=0;/delay1();/sda=1; delay1();for(i=0;i8;i+)temp=temp1;scl=1;delay1();temp=temp

11、|sda;scl=0;delay1();return (temp);void write_at2404(uchar addr,uchar dat)i2c_start();i2c_write_byte(0xa0);i2c_ack();i2c_write_byte(addr);i2c_ack();i2c_write_byte(dat);i2c_ack();i2c_stop();delay3(5000);uchar read_at2402(uchar addr)uchar temp;i2c_start();i2c_write_byte(0xa0);i2c_ack();i2c_write_byte(a

12、ddr);i2c_ack();i2c_start();i2c_write_byte(0xa1);i2c_ack();temp=i2c_read_byte();i2c_nack();i2c_stop();return (temp);#ifndef _2402_h_#define _2402_h_#include #include#define uchar unsigned char#define uint unsigned intsbit scl=p21;sbit sda=p20;void i2c_start();void i2c_stop();void i2c_ack();void i2c_n

13、ack();void i2c_write_byte(uchar);uchar i2c_read_byte();/void write_at2404(uchar addr,uchar dat);uchar read_at2402(uchar addr);#endif#includedelay.hvoid delay(uchar x)uchar a,b;for(a=x;a0;a-) for(b=200;b0;b-);void lcd_delay(uchar ms) uchar j; while(ms-) for(j=0;j250;j+) ; void delay1() ; ;void delay3

14、(uint q)uint e; for(e=0;eq;e+);#ifndef _delay_h_#define _delay_h_#include #include#define uchar unsigned char#define uint unsigned intvoid delay(uchar x);void lcd_delay(uchar ms);void delay1();void delay3(uint m);#endif#include display.hvoid display()p0=0;dula=1;dula=0;p0=0x7f;wela=1;wela=0;#ifndef

15、_display_h_#define _display_h_#include #include#define uchar unsigned char#define uint unsigned intsbit dula=p26;sbit wela=p27;void display();#endif#include delay.h/一般放在最前面 这个前后由调用先后决定着#include scan.h#include 1602.h/extern void write_data(uchar dat);/extern void write_com(uchar command);uchar key;uc

16、har temp,count,aa,bb,cc; /*一般将这些变量定义在c文件中 当主函数需要时用extern引用 */bit shu_flag,modify_flag,rst;bit fun_flag; /功能键标志位 没使用bit down_flag,up_flag,open_flag;void keyscan()p1=0xfe;temp=p1;temp=temp&0xf0;if(temp!=0xf0)delay(15);if(temp!=0xf0)temp=p1;switch(temp)case 0xee: key=0;shu_flag=1;write_data(*);count+;i

17、f(count6) count=0;aa=0;bb=0;cc=0;break;case 0xde: key=1;shu_flag=1;write_data(*);count+;if(count6) count=0;aa=0;bb=0;cc=0;break;case 0xbe: key=2;shu_flag=1;write_data(*);count+;if(count6) count=0;aa=0;bb=0;cc=0;break;case 0x7e: key=3;shu_flag=1;write_data(*);count+;if(count6) count=0;aa=0;bb=0;cc=0;

18、break;while(temp!=0xf0)temp=p1;temp=temp&0xf0;/beep=0;delay(500);/beep=1;/write_data(*);count+;while(temp!=0xf0);temp=p1;temp=temp&0xf0; p1=0xfd;temp=p1;temp=temp&0xf0;if(temp!=0xf0)delay(15);if(temp!=0xf0)temp=p1;switch(temp)case 0xed: shu_flag=1;key=4;write_data(*);count+;if(count6) count=0;aa=0;b

19、b=0;cc=0;break; /aa，bb，cc定时器中使用case 0xdd: shu_flag=1;key=5;write_data(*); /每次按键清零count+;if(count6) count=0;aa=0;bb=0;cc=0;break; /保证在按键器件不会自动返回case 0xbd: shu_flag=1;key=6;write_data(*); /count+;if(count6) count=0;aa=0;bb=0;cc=0;break;case 0x7d: shu_flag=1;key=7;write_data(*);count+;if(count6) count=

20、0;aa=0;bb=0;cc=0;break;while(temp!=0xf0)temp=p1;temp=temp&0xf0;/beep=0;delay(500);/ 松手检测 屏蔽蜂鸣器 噪音污染/beep=1;/write_data(*);count+;p1=0xfb;temp=p1;temp=temp&0xf0;if(temp!=0xf0)delay(15);if(temp!=0xf0)temp=p1;switch(temp) /fun_flag 功能键标志位case 0xeb: key=8; shu_flag=1;write_data(*);count+;if(count6) coun

21、t=0;aa=0;bb=0;cc=0;break;case 0xdb: key=9; shu_flag=1;write_data(*);count+;if(count6) count=0;aa=0;bb=0;cc=0;break;case 0xbb: modify_flag=1;fun_flag=1;aa=0;bb=0;cc=0;break; /修改键case 0x7b: rst=1;fun_flag=1;aa=0;bb=0;cc=0;break; /返回键while(temp!=0xf0)temp=p1;temp=temp&0xf0;/beep=0;delay(500);/beep=1;p1

22、=0xf7;temp=p1;temp=temp&0xf0;if(temp!=0xf0)delay(15);if(temp!=0xf0)temp=p1;switch(temp)/清除键case 0xe7: /key=12;shu_flag=1;break;aa=0;bb=0;cc=0;switch(count)case 1: write_com(0x80+0x40+5);write_data( );write_com(0x80+0x40+5);break;case 2: write_com(0x80+0x40+6);write_data( );write_com(0x80+0x40+6);bre

23、ak;case 3: write_com(0x80+0x40+7);write_data( );write_com(0x80+0x40+7);break;case 4: write_com(0x80+0x40+8);write_data( );write_com(0x80+0x40+8);break;case 5: write_com(0x80+0x40+9);write_data( );write_com(0x80+0x40+9);break;case 6: write_com(0x80+0x40+0x0a);write_data( );write_com(0x80+0x40+0x0a);b

24、reak;case 0xd7: key=13;up_flag=1;fun_flag=1;aa=0;bb=0;cc=0;break; /开门键case 0xb7: key=14;down_flag=1;fun_flag=1;aa=0;bb=0;cc=0;break;case 0x77: key=13;open_flag=1;fun_flag=1;aa=0;bb=0;cc=0;break;while(temp!=0xf0)temp=p1;temp=temp&0xf0;/beep=0;delay(500);/beep=1;if(count0) count-;break; /清除数字#ifndef _

25、scan_h_#define _scan_h_#include #include#define uchar unsigned char#define uint unsigned intvoid keyscan();#endif/* 名称：电子密码锁 时间：2014年8月2日 16:33:48 write by:kengkeng today is valentines day 程序功能： 1 ：开机1302显示时间，按下key15：开门键 进入输入密码界面 2 ：输入密码 输入错误超过三次 电子锁锁死 倒计时60s之后重新设置 蜂鸣器快速响 3 ：输入正确 进入菜单页面 两个选择 key13：开

26、门 key10：修改密码 4 ：修改已输入密码 可由key12键清除 重新输入 5 ：选择key13开门 打开继电器 显示倒计时15s开门 蜂鸣器慢响 提示15s内开门 否则15后关门 关闭继电器 并自动返回时间页面 6 ：选择key10修改密码 共两次 两次密码一致时设置成功 否则会一直提示输入密码 7 ：修改的密码存入2402中 上电读出 8 ：修改密码 无限循环 直到输入正确为止 可以使用key11：返回键 返回 9 ：在10s内无任何按键按下时 自动返回时间页面 可重新进入 10：在20s内无任何按键按下时 进入掉电模式 外部中断唤醒 键盘列表： 00 01 02 03 04 05 0

27、6 07 08 09 修改 返回 清除 开锁 切换 开门 修改 modify_flag 返回rst 清除key12 /切换down_flag/ 开锁up_flag 开门open_flag /切换的功能跟返回大致相同 */#include#include #include delay.h /delay.h最好放在最前面#include scan.h #include 1302.h#include 2402.h#include 1602.h#include display.h#define uchar unsigned char #define uint unsigned intextern uc

28、har key;extern uchar temp,count,aa,bb,cc;/*一般将这些变量定义在c文件中extern声明 不是定义当主函数需要时用extern引用 */extern bit shu_flag,modify_flag,rst;extern bit fun_flag; /功能键标志位 没使用extern bit down_flag,up_flag,open_flag;uchar data lcd1602_line1= 2014/08/02 000;uchar data lcd1602_line2= 10:42:50 ;uchar data time_data_buff7=

29、0x50,0x42,0x10,0x02,0x08,0x06,0x14;uchar code weeks3=sun,mon,tue,wed,thu,fri,sat,sun; /二维数组 八行三列bit mod_flag,rst_flag;uchar code num_to_char = 0123456789abcdef; uchar k,s,w;bit return_flag=0;/切换时间页面标志位bit sleep_flag;/进入掉电模式标志位uchar m,l;bit k_flag=0;bit b_flag=0;/倒计时标志位bit flag10;/保护标志位bit flag3,flag

30、4,flag2,flag1;/*数字标志位 修改密码标志位 返还标志位 1 2 3 4 保护数据标志位，防重复写入*/sbit beep=p23;/sbit sda=p20; /io口定义/sbit scl=p21;uchar code table=enter password:; uchar code table1=error!try again:; uchar code table2=welcome to china;uchar code table4=set password: ;uchar code table5=input again: ;uchar code table6= fuc

31、k you! ;uchar code table7= get out! ;uchar code table8= set succed ;uchar code table9=be patient.;uchar code table10= count down.;uchar code table12=please select ;uchar code table13=key10:for modify;uchar code table14=key13:for open ;uchar code table15=open the door;void t0_init()tmod=0x11;th0=(655

32、36-46080)/256;/ 由于晶振为11.0592,故所记次数应为46080，计时器每隔50000微秒发起一次中断。tl0=(65536-46080)%256;/46080的来历，为50000*11.0592/12 50msth1=(65536-46080)/256;tl1=(65536-46080)%256;ea=1;et0=1;/ 定时器进入中断倒计时和进入睡眠et1=1;tr1=1;ex0=1;/外部中断用来唤醒睡眠 ex1=1;void main(void)uchar a6,b6,p7,i,num;uchar table36;/=1,1,1,1,1,1; /*可将值赋予数组tab

33、le3【】 可作变量使用*/ /uchar aa,bb,cc,dd,ee,ff;lcd_init();t0_init();/write_at2404(10,0x00); /*初始化 之后屏蔽掉*/write_at2404(11,0x00); /否则每次上电密码都是000000/write_at2404(12,0x00);/write_at2404(13,0x00);/write_at2404(14,0x00);/write_at2404(15,0x00);table30=read_at2402(10);table31=read_at2402(11);table32=read_at2402(12

34、);table33=read_at2402(13);table34=read_at2402(14);table35=read_at2402(15);display();set_real_time(time_data_buff);/设置时间 等效于set_real_time(&time_data_buff【0】)while(1)while(1)down_flag=0;return_flag=0; while(sleep_flag=1)et0=0;et1=0;pcon=0x02;while(sleep_flag); /0000 0010/keyscan(); /数组p【7】等效于curtime7

35、get_real_time(p);/读出时间 等效于get_real_time(&p【0】);lcd1602_line13 = num_to_charp6/0x10;lcd1602_line14 = num_to_charp6%0x10; /*年*/lcd1602_line16 = num_to_charp4/0x10;lcd1602_line17 = num_to_charp4%0x10; /*月*/lcd1602_line19 = num_to_charp3/0x10;lcd1602_line110 = num_to_charp3%0x10; /*日*/for(i=0;i3;i+) lcd

36、1602_line1i+13=weeksp5&0x07i; /*星期*/lcd1602_line24 = num_to_charp2/0x10; lcd1602_line25 = num_to_charp2%0x10; /*时*/lcd1602_line27 = num_to_charp1/0x10;lcd1602_line28 = num_to_charp1%0x10; /*分*/lcd1602_line210 = num_to_charp0/0x10;lcd1602_line211 = num_to_charp0%0x10; /*秒*/for(i=0;i16;i+) wtite_lcd_1

37、602_dat(i,0,lcd1602_line1i); for(i=0;i16;i+) wtite_lcd_1602_dat(i,1,lcd1602_line2i);if(open_flag) break; /按下开门键 跳出while（1）读时间循环/*无论是修改密码还是开门 之后都要对其成功之前或者失败之前的标志位清零 否则导致二次扫描时不显示*/while(1) /进入while（1）设置密码 循环open_flag=0; /清零/count=0;/keyscan();if(!flag3) /防止扫描重复写入flag3write_com(0x01);write_com(0x0f);wr

38、ite_com(0x80); /静态显示 定位光标 闪烁for(i=0;i15;i+)write_data(tablei);write_com(0xc5);flag3=1; /必须使用标志位保护起来 否则连续扫描闪烁 导致光标暗淡if(num=2) /输入密码错误次数 大于三次锁死 倒计时 /这是个if else 语句if(shu_flag) /数字标志位 必须是数字才能采集switch(count) /按键次数 用之前最好将count进行处理case 1:acount-1=key;break;case 2:acount-1=key;break;case 3:acount-1=key;brea

39、k;case 4:acount-1=key;break;case 5:acount-1=key;break;case 6:acount-1=key;break;shu_flag=0;if(count=6) /按键六次之后 进行比较if(a0=table30)&(a1=table31)&(a2=table32)&(a3=table33)&(a4=table34)&(a5=table35)if(!flag4) /开锁保护标志位write_com(0x01);write_com(0x80);for(i=0;i16;i+)write_data(table2i);/ 开锁成功 写入welcomewrit

40、e_com(0x80+0x40);for(i=0;i16;i+)/selectwrite_data(table12i);write_com(0x0c); / 0000 1100modify_flag=0;/修改密码标志位 只有开锁之后才能修改密码flag4=1;/flag3=0;/*追加*/rst=0;delay(500);delay(500);delay(500);delay(500); /*你和我*/delay(500);delay(500);delay(500);delay(500); /*手牵手*/delay(500);delay(500);delay(500);delay(500);

41、 /*肩并肩*/delay(500);delay(500);delay(500);delay(500); /*嘴对嘴*/if(!flag10) /开锁保护标志位write_com(0x01);write_com(0x80);for(i=0;i16;i+)write_data(table13i);/for modifywrite_com(0x80+0x40);for(i=0;i16;i+)/ selectwrite_data(table14i);/for open write_com(0x0c); / 0000 1100modify_flag=0;/修改密码标志位 只有开锁之后才能修改密码up_

42、flag=0;flag10=1;/flag3=0;/*追加*/rst=0;/break; /*追加*/ /定时返回while(!rst) /程序停在这里 不断扫描 是否进入修改密码 /还是进入开锁 up_flag标志位keyscan();/键盘扫描 对修改和打开标志位判断if(modify_flag) break; /如果是修改 则跳出whileif(up_flag) /如果是打开 先处理 再跳出循环 再返回 write_com(0x01);write_com(0x80);for(i=0;i13;i+) /open the doorwrite_data(table15i);delay(2);write_com(0xc0);/for(i=0;i13;i+)/write_data( );/tr0=1;while(!b_flag)/定时标志位/beep=0; /代替继电器打开状态write_com(0xc1);write_data(num_to_chars/10);write_com(0xc2);write_data(num_to_chars%10);/beep=1;b_flag=0;tr0=0;/*此处开启tr0计时 然后开