密码锁+1602液晶显示C程序.docx

1、密码锁+1602液晶显示C程序#include#define uint unsigned int#define uchar unsigned charvoid key_scan();uchar count0,count1,count3,num,n=0,temp,a,j,count4;uchar mima8; /初始密码存储区uchar tab_key50; /输入密码存储区uchar code table=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71;bit enterflag;

2、/确认键按下与否的标志bit mimaflag; /密码正确与否的标志bit xiugaiflag; /修改密码标志 bit enter1flag; /修改密码确认键标志 sbit red=P37;sbit bell=P36;sbit rs=P20; sbit rw=P21;sbit lcden=P22;sbit scl=P34;sbit sda=P35;uchar code table1=input the passco;uchar code table2=de: -;uchar code table3=*;uchar code table4=right (_) ;uchar code ta

3、ble5=first error!;uchar code table6=second error!;uchar code table7=third error see ;uchar code table8=u tomorrow (_);uchar code table9=define the passc;uchar code table10=ode: -;uchar code table11=code is new;/*键盘消抖函数*void delay1() ; void delay2(uchar x) uchar a,b; for(a=x;a0;a-) for(b=100;b0;b-);

4、void delay(uint z) uint x,y; for(x=z;x0;x-) for(y=110;y0;y-);/*e2room的初始化*void start() /开始信号 sda=1; delay1(); scl=1; delay1(); sda=0; delay1();void stop() /停止 sda=0; delay1(); scl=1; delay1(); sda=1; delay1();/*应答信号*void respond() uchar i; scl=1; delay1(); while(sda=1)&(i250)i+; scl=0; delay1();/*写字

5、节操作函数*void write_byte(uchar date) uchar i,temp; temp=date; for(i=0;i8;i+) temp=temp1; /保持最高位，左移到进位CY scl=0; delay1(); sda=CY; delay1(); scl=1; delay1(); scl=0; delay1(); sda=1;/总线释放 delay1();/*读字节操作函数*uchar read_byte() uchar i,k; scl=0; delay1(); sda=1; delay1(); for(i=0;i8;i+) scl=1; delay1(); k=(k

6、1)|sda; /或运算，放到最低位 scl=0; delay1(); return k;/*写地址函数*void write_add(uchar address,uchar date) start(); write_byte(0xa0); respond(); write_byte(address); respond(); write_byte(date); respond(); stop();/*读地址函数*uchar read_add(uchar address) uchar date; start(); write_byte(0xa0); respond(); write_byte(a

7、ddress); respond(); start(); write_byte(0xa1); respond(); date=read_byte(); stop(); return date;/*LCD1602的初始化*void write_com(uchar com) rs=0; lcden=0; P0=com; delay(5); lcden=1; delay(5); lcden=0; void write_date(uchar date) rs=1; lcden=0; P0=date; delay(5); lcden=1; delay(5); lcden=0; /*密码比较函数*bit

8、mimacmp() bit flag; uchar i; for(i=0;i8;i+) if(mimai=tab_keyi) flag=1; else flag=0; i=8; return(flag); /返回flag/*LCD显示函数开始*void lcd_display()uchar i=0;write_com(0x80+0x40+8);for(i=0;in;i+)write_date(table30);/*键盘功能分配函数群开始*/* 0 * 1 *2 * 3* /* 4* 5* 6 *7 */*8* 9* 确认（A） *无效（B）/*取消（C）*修改密码键（D）*确认修改键（E）*无

9、效（F）void key_manage1()tab_keyn=0;n+;if(xiugaiflag=1)mimacount4=0;count4+;void key_manage2()tab_keyn=1;n+;if(xiugaiflag=1)mimacount4=1;count4+;void key_manage3()tab_keyn=2;n+;if(xiugaiflag=1)mimacount4=2;count4+;void key_manage4()tab_keyn=3;n+;if(xiugaiflag=1)mimacount4=3;count4+;void key_manage5()ta

10、b_keyn=4;n+;if(xiugaiflag=1)mimacount4=4;count4+;void key_manage6()tab_keyn=5;n+;if(xiugaiflag=1)mimacount4=5;count4+;void key_manage7()tab_keyn=6;n+;if(xiugaiflag=1)mimacount4=6;count4+;void key_manage8()tab_keyn=7;n+;if(xiugaiflag=1)mimacount4=7;count4+;void key_manage9()tab_keyn=8;n+;if(xiugaifla

11、g=1)mimacount4=8;count4+;void key_manage10()tab_keyn=9;n+;if(xiugaiflag=1)mimacount4=9;count4+;/*确认键* void key_manage11() enterflag=1; /确认键按下 if(n=8) /只有输入8个密码后按确认才做比较 mimaflag=mimacmp(); else mimaflag=0; if(enterflag=1) enterflag=0; n=0; /用FFFFFFFF清除已经输入的密码 for(count3=0;count38;count3+) delay(5); t

12、ab_keycount3=0x0f; TR1=1; /打开计数器1 count1=0; /定时器1由50MS累计到1S所用的计数器 if(mimaflag=1) a=0; write_com(0x01); write_com(0x80); for(count3=0;count316;count3+) write_date(table4count3); /密码正确，显示RIGHT，绿灯亮 delay(5); else n=0; red=0; bell=0; a+; if(a=1) for(count3=0;count38;count3+) /ffffffff清除密码 delay(5); tab_

13、keycount3=0x0f; write_com(0x01); write_com(0x80); for(count3=0;count316;count3+) write_date(table5count3); /密码错误，显示 first error，红灯亮 delay(5); TR1=1; if(a=2) for(count3=0;count38;count3+) /ffffffff清除密码 delay(5); tab_keycount3=0x0f; write_com(0x01); write_com(0x80); for(count3=0;count316;count3+) writ

14、e_date(table6count3); /密码错误，显示SECOND ERROR，红灯亮 delay(5); TR1=1; if(a=3) for(count3=0;count38;count3+) /ffffffff清除密码 delay(5); tab_keycount3=0x0f; write_com(0x01); write_com(0x80); for(count3=0;count316;count3+) write_date(table7count3); /密码错误，显示third error see，红灯亮 delay(5); write_com(0x80+0x40); for

15、(count3=0;count316;count3+) write_date(table8count3);/密码错误，显示 U TOMORROW ,红灯亮 delay(5); TR1=0; void key_manage12()tab_keyn=11;n+; /密码计数清零/*取消键* void key_manage13()n=0; /密码计数清零write_com(0x80); /指针所指位置for(count3=0;count316;count3+) write_date(table1count3); /第一行显示INPUT THE PASSPORD: delay(5);write_com

16、(0x80+0x40);for(count3=0;count316;count3+) write_date(table2count3); /开机显示- delay(5); tab_keycount3=0x0f; /用FFFFFFFF清楚已经输入的密码/*修改密码键*void key_manage14() uchar aa=0; n=0; xiugaiflag=1; write_com(0x01); write_com(0x80);for(count3=0;count316;count3+) write_date(table9count3); /显示define the password del

17、ay(5); tab_keycount3=0x0f; /用FFFFFFFF清楚已经输入的密码 write_com(0x80+0x40);for(count3=0;count316;count3+) write_date(table10count3); /显示- delay(5);TR0=1;/*修改密码键的确认键*void key_manage15()n=0;enter1flag=1;if(enter1flag=1) enter1flag=0; count4=0; for(count3=0;count316;count3+) tab_keycount3=0x0f; /用FFFFFFFF清楚已经

18、输入的密码 write_com(0x01); write_com(0x80); for(count3=0;count316;count3+) write_date(table11count3); delay(100); TR1=1; count1=0;void key_manage16()tab_keyn=15;n+;/*定时器1的50MS,共延时1秒*void time_1() interrupt 3 TH1=(65536-50000)/256; TL1=(65536-50000)%256; if(count120) count1+; else /计时到1S TR1=0; count1=0;

19、 mimaflag=0; red=1; bell=1; /显示FFFFFFFF write_com(0x01); write_com(0x80); for(count3=0;count316;count3+) write_date(table1count3); /显示INPUT THE PASSCODE delay(5); write_com(0x80+0x40); for(count3=0;count316;count3+) write_date(table2count3); /开机显示FFFFFFFF delay(5); /*定时0*void time_0() interrupt 1 TH

20、0=(65536-50000)/256; TL0=(65536-50000)%256;if(count48) key_scan();else TR0=0; count4=0;/初始化函数void init() uchar i; lcden=0; write_com(0x38); /打开显示模式设置 write_com(0x0c); /打开显示，光标等等设置未零 write_com(0x06); /当读或写一个字符后地址指针加一，且光标加一，当写一个字符后整频显示左移， write_com(0x01); /清零指令 write_com(0x80); /指针所指位置 /定时器初始化 TMOD=0x

21、11; /T0,T1工作方式1 TH0=(65536-2000)/256; TL0=(65536-2000)%256; /T0初始化2MS TH1=(65536-50000)/256; TL1=(65536-50000)%256; /T1初始化50MS TR1=0; ET1=1; EA=1; TR0=0; ET0=1; count0=0; /初始没有密码输入，故为零 enterflag=0; /没有确认键按下 mimaflag=0; /密码正确与否键先置零 red=1; /红灯不亮/*密码存入EPROM中* sda=1; delay(5); scl=1; delay(5); for(i=0;i8;i+) write_add(i,8); delay2(100); for(i=0;i8;i+) mimai=read_add(i); delay(5); void main() rw=0; init(); write_