基于51单片机的c语言程序 电子密码锁

#include<reg52.h> #include<intrinS.h> #include<absacc.h> #include "keycl.h"//见3.12 #include "LCD1602.h"//见2.2 #include "24C02.h"//见4.1 #define uchar unsigned char #define C02_write 0xa0 #define C02_read 0xa1 #define enter 0x0C//确定 #define backspace 0x0F//退格 #define A 0x0a //输入密码 #define B 0x0b //修改密码 uchar idata temp5_password[6]= {0x01,0x02,0x03,0x04,0x05,0x06};//设置初始密码为“123456” sbit SET=P3^2;//恢复出厂密码设置键 sbit Lock_BIT=P3^3;//锁控制信号，输出低电平 sbit SPK=P3^4;//报警信号输出端 uchar int_count_1; unsigned int int_count_2; //================================================ void longdelay(unsigned char i) { unsigned int j; for(;i>0;i--) for(j=10000;j>0;j--); } //========================================== bit compare_string(uchar *string1,uchar *string2) { uchar count; for(count=0;count<6;count++) { if(string1[count]!=string2[count]) return(0); } return(1); } //--------------------------------------- uchar step_choose(void) { unsigned int i; uchar key; do{ WR_CMD(0x01); WR_CMD(0x06); GotoXY(0,0); Show_Char("input password"); GotoXY(0,1); Show_Char("please press A"); for(i=0;i<30000;i++) { key=keycl(); if((key==A)||(key==B)) break; } if((key!=A)&&(key!=B)) { WR_CMD(0x01); WR_CMD(0x06); GotoXY(0,0); Show_Char("change password"); GotoXY(0,1); Show_Char("please press B"); for(i=0;i<30000;i++) { key=keycl(); if((key==A)||(key==B)) break; } } } while((key!=A)&&(key!=B)); return(key); } //========================================================== bit input_password(uchar *password) { uchar count; uchar key; GotoXY(0,1); for(count=0;count<7;count++) { longdelay(3); if(count<6) { do{key=keycl();} while(key==0xff); if((key!=backspace)&&(key!=enter)) { Show_1_Char('*'); password[count]=key; } if(key==backspace) { if(count>0) { GotoXY(--count,1); Show_1_Char(' '); password[count]=' '; GotoXY(count,1); count--; } } if(key==enter) { GotoXY(0,0); return( 0); } } if(count==6) { do{key=keycl();} while((key!=backspace)&&(key!=enter)); if(key==backspace) { GotoXY(--count,1); Show_1_Char(' '); password[count]=' '; GotoXY(count,1); count--; } if(key==enter) {return(1);} } } } //============================================================ void password() {uchar key; uchar idata temp1_password[6]={' ',' ',' ',' ',' ',' '}; uchar idata temp3_password[6]={' ',' ',' ',' ',' ',' '}; uchar idata temp2_password[6]={' ',' ',' ',' ',' ',' '}; uchar idata temp4_password[6]={' ',' ',' ',' ',' ',' '}; key=step_choose(); if(key==A) {Read_Flash(temp1_password,0x00,6);//I2C_receive_string(temp1_password,6,0x00); WR_CMD(0x01); WR_CMD(0x06); GotoXY(2,0); Show_Char("input password"); if(input_password(temp2_password)) {if(compare_string(temp1_password,temp2_password)) {GotoXY(0,1); Show_Char("password correct!"); Lock_BIT=0; SPK=0; TR0=1; longdelay(10); Lock_BIT=1; SPK=1; TR0=0; return; } else {GotoXY(0,1); Show_Char("wrong password"); longdelay(10); return; } } else {GotoXY(0,1); Show_Char("error! "); longdelay(6); } } else {Read_Flash(temp1_password,0x00,6);//I2C_receive_string(temp1_password,6,0x00); WR_CMD(0x01); WR_CMD(0x06); GotoXY(0,0); Show_Char("input old password"); if(input_password(temp2_password)) {if(compare_string(temp1_password,temp2_password)) {GotoXY(0,1); Show_Char("password correct!"); longdelay(6); WR_CMD(0x01); WR_CMD(0x06); GotoXY(0,0); Show_Char("input new password"); if(input_password(temp3_password)) {WR_CMD(0x01); WR_CMD(0x06); GotoXY(0,0); Show_Char("input password again"); if(input_password(temp4_password)) {if(compare_string(temp3_password,temp4_password)) {Write_Flash(temp3_password,0x00,6);//I2C_send_string(temp3_password,6,0x00); WR_CMD(0x01); WR_CMD(0x06); GotoXY(0,0); Show_Char("password has"); GotoXY(0,1); Show_Char("been changed"); longdelay(10); return; } else {WR_CMD(0x01); WR_CMD(0x06); GotoXY(0,0); Show_Char("twice input"); GotoXY(0,1); Show_Char("is different"); longdelay(10); return; } } else {GotoXY(0,1); Show_Char("error! "); longdelay(10); return; } } else {GotoXY(0,1); Show_Char("error! "); longdelay(10); return; } } else {GotoXY(0,1); Show_Char("wrong password"); longdelay(6); return; } } else {GotoXY(0,1); Show_Char("error! "); longdelay(6); return; } } } //=================================================== void int_service(void) using 0 interrupt 0 {EA=0; EX0=0; for(int_count_1=10;int_count_1>0;int_count_1--) {for(int_count_2=0xffff;int_count_2>0;int_count_2--) {if(SET) {EA=1; EX0=1; return; } } } WR_CMD(0x01); WR_CMD(0x06); Show_Char("rest success!"); longdelay(12);//延时 Write_Flash(temp5_password,0x00,6);//I2C_send_string(temp5_password,6,0x00); (*(void(*)())0)(); } //========================================================= void t0(void) interrupt 1 using 0 { TH0=(65536-1000)/256; TL0=(65536-1000)%256; SPK=~SPK; } //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void main(void) { IT0=1; EX0=1; TMOD=0x01; TH0=(65536-1000)/256; TL0=(65536-1000)%256; TR0=0; ET0=1; EA=1; LCD_Initial2(); while(1) { password(); } }