单片机设计proteus仿真-密码锁.rar

#include <reg52.h> #include "keypad.h" #include "lcd.h" #include "delay.h" #include "lock.h" #include "24c02.c " #define uchar unsigned char sbit lockpin =P1^3; uchar code masterlock[10]="9888272751", defaultulock[5]="32179"; uchar userlock[5], input[10]; extern bit newlock; bit check(uchar *first, uchar *second, uchar len){ uchar i=0; for(i=0;i<len;i++){ if(first[i]!=second[i]) return FALSE; } return TRUE; } void setulock(){ char status; retry: lcd_cmd(LCD_CLS); //清屏 lcd_cmd(LCD_SETDDADDR); //设DDRAM地址为0 lcd_str("Enter Mastercode"); //占用了前十六个位置 lcd_cmd(0xC0); //从第十七个位置开始显示 lcd_data(LOCK); lcd_data(':'); //液晶屏第二行显示" :" status = getinput(10); if(status == TRUE){ if(check(input,masterlock,10)){ retry1: lcd_cmd(LCD_CLS); lcd_str("Enter new code"); lcd_cmd(0xC0); lcd_data(LOCK); lcd_data(':'); status = getinput(5); if(status == TRUE){ lcd_cmd(LCD_CLS); lcd_data(OK); lcd_str("lock code saved!"); newlock = TRUE; store_code(); delayms(250); delayms(250); delayms(250); delayms(250); goto exit; } else if(status == RETRY) goto retry1; else if(status == EXIT) goto exit; } else{ lcd_cmd(LCD_CLS); lcd_str("WRONG CODE!"); delayms(250); delayms(250); delayms(250); delayms(250); goto exit; } } else if(status == RETRY) goto retry; else if(status == EXIT) goto exit; exit:; } char getinput(uchar max){ uchar i,key; i=0; while(1){ while(!(key=getkey())); key = translate(key); input[i]=key; if(key=='x'){ if(i==0) return EXIT; i--; lcd_cmd(0xC2+i); lcd_data(' '); lcd_cmd(0xC2+i);//删除已输入密码 } else if(key=='e'){ return TRUE; } else{ i++; if(i>max){ lcd_cmd(LCD_CLS); lcd_data(EX); lcd_str(" Code too Long..."); delayms(250); delayms(250); delayms(250); delayms(250); return RETRY; } lcd_data(key); } } } void store_code(){ uchar i; uchar new_lock[1]=1; //把有新密码的标志位设为new_lock[1] for(i=0;i<5;i++) userlock[i]=input[i]; WrToROM(userlock,0,5); //把新的5位新密码存入24C02 WrToROM(new_lock,5,1); //把标志位的值存入24C02 }