单片机实现密码锁(1602显示)_带设置密码功能

#include<reg52.h> #define uchar unsigned char #define uint unsigned int void delay(uint); void change_password(); //重设密码,检测原密码 void pleaseresetpassword(); //重新设置密码,输入新的密码 void showinputpassword(); //显示输入密码提示符 void inputpasstest(); //密码输入检测 void inputtestnum(); //输入密码的位数检测 void keysetlock (); //键盘锁定函数 void locktest(); //键盘锁定时,按键检测函数 sbit DULA=P2^6; sbit WELA=P2^7; sbit LCDRS=P3^5; sbit LCDEN=P3^4; sbit s1=P3^0; sbit s2=P3^1; sbit s3=P3^2; sbit s4=P3^3; sbit P3_6=P3^6; //sbit s5=P3^7; sbit P2_3=P2^3; uchar string3[]="keyset lock"; uchar string[]="input password",string1[]="pass",string2[]="error",show[]={48,49}; uchar password[5] ,resetpassword[5],unreset[5];//={0,0,0,0,0}; //密码储存数组 , 重设置密码时储存的数组 uchar string4[]="input new pass"; //重设新密码提示符 uchar string5[]="succeed"; uchar string6[]="input old pass"; uchar string7[]="confirm Y/N",string8[]="fail"; uchar strsmark=1,locksmark=0; //strsmart为显示输入密码提示标识, locksmart为正在锁键中 uchar resetpasswordsmark=0; //重设密码时的标识符 uchar testoldpasswordsmark=0; uchar inputnew=0; uchar resetsure=0; uchar m=0; uchar i,j=0,k=0; //K为输入密码错误的次数 J为输入密码位数 write_command(char com) { LCDRS=0; P0=com; delay(5); LCDEN=1; delay(5); LCDEN=0; } write_data(char date) { LCDRS=1; P0=date; delay(5); LCDEN=1; delay(5); LCDEN=0; } void Init() { DULA=0; WELA=0; LCDEN=0; write_command(0x38); write_command(0x0e); write_command(0x06); write_command(0x01); write_command(0x80); } ////////主函//////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////// void main() { EA=1; ET0=1; TMOD=0X01; TH0=(65536-50000)/256; TL0=(65536-50000)%256; TR0=0; Init(); P3_6=0; while(1) { change_password(); // pleaseresetpassword(); //重新设置密码 if(resetpasswordsmark==0) //重设密码标识符,0为不设置 { showinputpassword(); //输入密码提示符 inputpasstest(); //密码输入检测 inputtestnum(); //输入密码位数检测 if(k==3) keysetlock(); //调用键盘锁定函数 locktest(); //调用键盘锁定时检测按键函数 } } } ///////重设密码////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////// void change_password() //重设密码,检验旧密码 { if(s3==0) { delay(10); if(s3==0) { write_command(0x01); write_command(0x80); for(i=0;i<14;i++) //提示输入旧密码 { write_data(string6[i]); } write_command(0xc0); while(s3==0); resetpasswordsmark=1; //重设密码标识,1为打开 testoldpasswordsmark=1; //检验旧密码,1为开户 j=0; } } /////以上是检测是否要重设密码/////////////// ///////以下是检验旧密码的过程////////////////////////////// if(testoldpasswordsmark==1) { if(s1==0) { delay(10); if(s1==0) { write_data(42); password[j]=0; j++; while(s1==0); } } if(s2==0) { delay(10); if(s2==0) { write_data(42); password[j]=1; j++; while(s2==0); } } } if((j==5)&&resetpasswordsmark==1) //判断按键是否输入了五次 { testoldpasswordsmark=0; //检验密码 输入标识,0为禁止 ////////以下判断,是否输入正确 if(password[0]==resetpassword[0]&&password[1]==resetpassword[1]&&password[2]==resetpassword[2]&&password[3]==resetpassword[3]&&password[4]==resetpassword[4])// 决断密码是否正确 { write_command(0x01); //清屏 write_command(0xc4); //光标定位 write_command(0x0c); //消除光标显示 for(i=0;i<7;i++) //提示验证密码成功 { write_data(string5[i]); } delay(1000); write_command(0x01); write_command(0x80); write_command(0x0e); // 显示光标 for(i=0;i<14;i++) //提示输入新密码 { write_data(string4[i]); } write_command(0xc0); //重置新密码输入的位置 inputnew=1; //输入新密码标识 testoldpasswordsmark=0; //检验旧密码,0为关闭检验 } else { write_command(0x01); write_command(0xc4); write_command(0x0c); for(i=0;i<5;i++) //提示输入错误 { write_data(string2[i]); } delay(500); write_command(0x01); write_command(0x0e); write_command(0x80); resetpasswordsmark=0; //设置密码标识,0为禁止, testoldpasswordsmark=0; //检验密码标识 ,0为禁止 strsmark=1; } j=0; // if(inputnewpasswordsmark==1) // pleaseresetpassword(); //输入新的密码 } if(inputnew==1) { pleaseresetpassword(); //输入新的密码 } } ////设置新密码,输入新的密码 并提示修改成功 void pleaseresetpassword() { if((s1==0)&&resetsure==0) { delay(10); if(s1==0) { write_data(42); unreset[j]=0; j++; while(s1==0); } } if((s2==0)&&resetsure==0) { delay(10); if(s2==0) { write_data(42); unreset[j]=1; j++; while(s2==0); } } if(j==5) { write_command(0x01); write_command(0x0c); write_command(0x81); for(i=0;i<11;i++) //确认更改提示, { write_data(string7[i]); } j=0; resetsure=1; } if((s1==0)&&resetsure==1) //按S8 表示确定更改密码, { delay(10); if((s1==0)&&resetsure==1) { write_command(0x01); write_command(0xc4); write_command(0x0c); for(i=0;i<7;i++) //提示重设密码成功 { write_data(string5[i]); } delay(500); write_command(0x01); write_command(0x0e); // write_command(0xc0); resetpasswordsmark=0; strsmark=1; inputnew=0; resetsure=0; for(j=0;j<5;j++) { resetpassword[j]=unreset[j]; } j=0; } } if((s2==0)&&resetsure==1) //按S12表示取消重设密码, { delay(10); if((s2==0)&&resetsure==1) { write_command(0x01); write_command(0x0c); write_command(0xc4); for(i=0;i<4;i++) //重新设置密码失败提示 { write_data(string8[i]); } delay(500); write_command(0x01); write_command(0xce); write_command(0xc); resetpasswordsmark=0; strsmark=1; inputnew=0; resetsure=0; } } } /////////////显示输入密码提示 /////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////////////////////// void showinputpassword() { if(strsmark==1) //strsmart为显示输入标识,1为允许 { write_command(0x80); for(i=0;i<14;i++) { write_data(string[i]); } write_command(0xc0); strsmark=0; } } void inputpasstest() //密码输入检测函数 { if((s1==0)&&locksmark==0) { delay(10); if((s1==0)&&locksmark==0) { write_data(42); password[j]=0; j++; while(s1==0); } } if((s2==0)&&locksmark==0) { delay(10); if((s2==0)&&locksmark==0) { write_data(42); password[j]=1; j++; while(s2==0); } } } ////////输入密码位数检测,并检测输入是否正确 ///////////////////////////////////////////// void inputtestnum() { if(j==5) //判断按键是否输入了五次 { if(password[0]==resetpassword[0]&&password[1]==resetpassword[1]&&password[2]==resetpassword[2]&&password[3]==resetpassword[3]&&password[4]==resetpassword[4])// 决断密码是否正确 { write_command(0x01); //清屏 P1=0XFE; write_command(0xc4); //光标定位 write_command(0x0c); //消除光�