电子密码锁C程序.docx

1、电子密码锁C程序C51电子密码锁#include #include#define LCM_Data P0#define PCOM P1#define uchar unsigned char #define uint unsigned intsbit dula=P26;/数码管段选sbit wela=P27;/数码管位选sbit lcd1602_rs=P35;sbit lcd1602_rw=P36;sbit lcd1602_en=P34;sbit Scl=P21; /24C02串行时钟sbit Sda=P20; /24C02串行数据sbit ALAM = P25; /报警 sbit KEY =

2、P24; /开锁sbit open_led=P22; /开锁指示灯bit operation=0; /操作标志位bit pass=0; /密码正确标志bit ReInputEn=0; /重置输入充许标志 bit s3_keydown=0; /3秒按键标志位bit key_disable=0; /锁定键盘标志unsigned char countt0,second; /t0中断计数器,秒计数器void Delay5Ms(void);unsigned char code a=0xFE,0xFD,0xFB,0xF7; /控盘扫描控制表unsigned char code start_line = p

3、assword: ;unsigned char code name = =Coded Lock=; /显示名称 unsigned char code Correct = correct ; /输入正确 unsigned char code Error = error ; /输入错误unsigned char code codepass = pass ; unsigned char code LockOpen = open ; /OPENunsigned char code SetNew = SetNewWordEnable;unsigned char code Input = input: ;

4、 /INPUTunsigned char code ResetOK = ResetPasswordOK ;unsigned char code initword = Init password.;unsigned char code Er_try = error,try again!;unsigned char code again = input again ;unsigned char InputData6; /输入密码暂存区unsigned char CurrentPassword6=1,3,1,4,2,0; /当前密码值unsigned char TempPassword6;unsig

5、ned char N=0; /密码输入位数记数unsigned char ErrorCont; /错误次数计数unsigned char CorrectCont; /正确输入计数unsigned char ReInputCont; /重新输入计数unsigned char code initpassword6=0,0,0,0,0,0;/=5ms延时=void Delay5Ms(void) unsigned int TempCyc = 5552; while(TempCyc-);/=400ms延时=void Delay400Ms(void) unsigned char TempCycA = 5;

6、 unsigned int TempCycB; while(TempCycA-) TempCycB=7269; while(TempCycB-); /=24C02=void mDelay(uint t) /延时 uchar i; while(t-) for(i=0;i125;i+) ; void Nop(void) /空操作 _nop_(); _nop_(); _nop_(); _nop_();/*起始条件*/void Start(void) Sda=1; Scl=1; Nop(); Sda=0; Nop(); /*停止条件*/void Stop(void) Sda=0; Scl=1; Nop

7、(); Sda=1; Nop();/*应答位*/void Ack(void) Sda=0; Nop(); Scl=1; Nop(); Scl=0;/*反向应答位*/void NoAck(void) Sda=1; Nop(); Scl=1; Nop(); Scl=0; /*发送数据子程序，Data为要求发送的数据*/void Send(uchar Data) uchar BitCounter=8; uchar temp; do temp=Data; Scl=0; Nop(); if(temp&0x80)=0x80) Sda=1; else Sda=0; Scl=1; temp=Data1; Da

8、ta=temp; BitCounter-; while(BitCounter); Scl=0;/*读一字节的数据，并返回该字节值*/uchar Read(void) uchar temp=0; uchar temp1=0; uchar BitCounter=8; Sda=1; do Scl=0; Nop(); Scl=1; Nop(); if(Sda) temp=temp|0x01; else temp=temp&0xfe; if(BitCounter-1) temp1=temp1; temp=temp1; BitCounter-; while(BitCounter); return(temp

9、); void WrToROM(uchar Data,uchar Address,uchar Num) uchar i; uchar *PData; PData=Data; for(i=0;iNum;i+) Start(); Send(0xa0); Ack(); Send(Address+i); Ack(); Send(*(PData+i); Ack(); Stop(); mDelay(20); void RdFromROM(uchar Data,uchar Address,uchar Num) uchar i; uchar *PData; PData=Data; for(i=0;i0;x-)

10、 for(y=110;y0;y-);/-写指令-write_1602com(uchar com)/*液晶写入指令函数* lcd1602_rs=0;/数据/指令选择置为指令 lcd1602_rw=0; /读写选择置为写 P0=com;/送入数据 delay(1); lcd1602_en=1;/拉高使能端，为制造有效的下降沿做准备 delay(1); lcd1602_en=0;/en由高变低，产生下降沿，液晶执行命令/-写数据-write_1602dat(uchar dat)/*液晶写入数据函数* lcd1602_rs=1;/数据/指令选择置为数据 lcd1602_rw=0; /读写选择置为写 P

11、0=dat;/送入数据 delay(1); lcd1602_en=1; /en置高电平，为制造下降沿做准备 delay(1); lcd1602_en=0; /en由高变低，产生下降沿，液晶执行命令/-初始化-void lcd_init(void) write_1602com(0x38);/设置液晶工作模式，意思：16*2行显示，5*7点阵，8位数据 write_1602com(0x0c);/开显示不显示光标 write_1602com(0x06);/整屏不移动，光标自动右移 write_1602com(0x01);/清显示/=将按键值编码为数值=unsigned char coding(uns

12、igned char m) unsigned char k; switch(m) case (0xee): k=1;break; case (0xde): k=2;break; case (0xbe): k=3;break; case (0x7e): k=A;break; case (0xed): k=4;break; case (0xdd): k=5;break; case (0xbd): k=6;break; case (0x7d): k=B;break; case (0xeb): k=7;break; case (0xdb): k=8;break; case (0xbb): k=9;br

13、eak; case (0x7b): k=C;break; case (0xe7): k=*;break; case (0xd7): k=0;break; case (0xb7): k=#;break; case (0x77): k=D;break; return(k);/=按键检测并返回按键值=unsigned char keynum(void) unsigned char row,col,keynum; PCOM=0xf0; if(PCOM&0xf0)!=0xf0) Delay5Ms(); /Delay5Ms(); if(PCOM&0xf0)!=0xf0) row=PCOM&0xf0; /确

14、定行线 keynum=row|0x0f; PCOM=keynum; col=PCOM&0x0f; keynum=row+col; while(PCOM&0xf0)!=0xf0) PCOM=0xf0; return keynum; else return 0; else return 0; /无键按下时返回0/=一声提示音，表示有效输入=void OneAlam(void) ALAM=0; Delay5Ms(); ALAM=1;/=二声提示音，表示操作成功=void TwoAlam(void) ALAM=0; Delay5Ms(); ALAM=1; Delay5Ms(); ALAM=0; Del

15、ay5Ms(); ALAM=1;/=三声提示音,表示错误=void ThreeAlam(void) ALAM=0; Delay5Ms(); ALAM=1; Delay5Ms(); ALAM=0; Delay5Ms(); ALAM=1; Delay5Ms(); ALAM=0; Delay5Ms(); ALAM=1;/=显示提示输入=void DisplayChar(void) unsigned char i; if(pass=1) write_1602com(er); for(i=0;i16;i+) write_1602dat(LockOpeni); else if(N=0) write_160

16、2com(er); for(i=0;i16;i+) write_1602dat(Errori); else write_1602com(er); for(i=0;i16;i+) write_1602dat(start_linei); /=重置密码=void ResetPassword(void) unsigned char i; unsigned char j; if(pass=0) /函数 Ensure(void)中第一次输入正确密码就会将PASS置1 pass=0; DisplayChar(); ThreeAlam(); else if(ReInputEn=1) /在键确认函数 Ensur

17、e(void)中两次输入正确密码就会将ReInputEn置1 if(N=6) ReInputCont+; if(ReInputCont=2) for(i=0;i6;) if(TempPasswordi=InputDatai) /将两次输入的新密码作对比 i+; else write_1602com(er); for(j=0;j16;j+) write_1602dat(Errorj); ThreeAlam(); /错误提示 pass=0; ReInputEn=0; /关闭重置功能， ReInputCont=0; DisplayChar(); break; if(i=6) write_1602co

18、m(er); for(j=0;j16;j+) write_1602dat(ResetOKj); /显示密码更新OK TwoAlam(); /操作成功提示 WrToROM(TempPassword,0,6); /将新密码写入24C02存储 ReInputEn=0; ReInputCont=0; CorrectCont=0; else / if(ReInputCont!=2) OneAlam(); write_1602com(er); for(j=0;j16;j+) write_1602dat(againj); /显示再次输入一次 for(i=0;i6;i+) TempPasswordi=Inpu

19、tDatai; /将第一次输入的数据暂存起来 N=0; /输入数据位数计数器清零 /=输入密码错误超过三过，报警并锁死键盘=void Alam_KeyUnable(void) P1=0x00; ALAM=ALAM; Delay5Ms(); /=取消所有操作=void Cancel(void) unsigned char i; unsigned char j; write_1602com(er); for(j=0;j16;j+) write_1602dat(start_linej); TwoAlam(); /提示音 for(i=0;i6;i+) InputDatai=0; KEY=1; /关闭锁

20、 ALAM=1; /报警关 operation=0; /操作标志位清零 pass=0; /密码正确标志清零 ReInputEn=0; /重置输入充许标志清零 ErrorCont=0; /密码错误输入次数清零 CorrectCont=0; /密码正确输入次数清零 ReInputCont=0; /重置密码输入次数清零 open_led=1; s3_keydown=0; key_disable=0; N=0; /输入位数计数器清零/=确认键，并通过相应标志位执行相应功能=void Ensure(void) unsigned char i,j; RdFromROM(CurrentPassword,0,

21、6); /从24C02里读出存储密码 if(N=6) /N的值由main函数确定 if(ReInputEn=0) /重置密码功能未开启 for(i=0;i6;) if(CurrentPasswordi=InputDatai) i+; else / if(CurrentPasswordi!=InputDatai) ErrorCont+; if(ErrorCont=3) /错误输入计数达三次时，报警并锁定键盘 write_1602com(er); for(i=0;i16;i+) write_1602dat(Errori); do Alam_KeyUnable(); /输入密码错误超过三次，报警并锁死键盘 while(1); / if(ErrorCont=3) else / if(ErrorCont!=3) TR0=1; /开启定时 key_disable=1; /锁定键盘 pass=0; break; /else_1 if(CurrentPasswordi!=InputDatai) /跳出for(i=0;i6;)循环 if(i=6) CorrectCont+; if(C