51單片機密碼鎖
單片機源程序如下:
- //包含頭文件
- #include <REG51.h>
- #include<intrins.h>
- //宏定義
- #define LCM_Data P0 //將P0口定義為LCM_Data
- #define uchar unsigned char
- #define uint unsigned int
- //1602的控制腳
- sbit lcd1602_rs=P2^5;
- sbit lcd1602_rw=P2^6;
- sbit lcd1602_en=P2^7;
- sbit Scl=P3^4; //24C02串行時鐘
- sbit Sda=P3^5; //24C02串行數(shù)據(jù)
- sbit ALAM = P2^1; //報警
- sbit KEY = P3^6; //開鎖
- bit pass=0; //密碼正確標志
- bit ReInputEn=0; //重置輸入允許標志
- bit s3_keydown=0; //3秒按鍵標志位
- bit key_disable=0; //鎖定鍵盤標志
- unsigned char countt0,second; //t0中斷計數(shù)器,秒計數(shù)器
- void Delay5Ms(void); //聲明延時函數(shù)
- unsigned char code a[]={0xFE,0xFD,0xFB,0xF7}; //控盤掃描控制表
- //液晶顯示數(shù)據(jù)數(shù)組
- unsigned char code start_line[] = {"password: "};
- unsigned char code name[] = {"===Coded Lock==="}; //顯示名稱
- unsigned char code Correct[] = {" correct "}; //輸入正確
- unsigned char code Error[] = {" error "}; //輸入錯誤
- unsigned char code codepass[] = {" pass "};
- unsigned char code LockOpen[] = {" open "}; //OPEN
- unsigned char code SetNew[] = {"SetNewWordEnable"};
- unsigned char code Input[] = {"input: "}; //INPUT
- unsigned 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 InputData[6]; //輸入密碼暫存區(qū)
- unsigned char CurrentPassword[6]={0,0,0,0,0,0}; //讀取EEPROM密碼暫存數(shù)組
- unsigned char TempPassword[6];
- unsigned char N=0; //密碼輸入位數(shù)記數(shù)
- unsigned char ErrorCont; //錯誤次數(shù)計數(shù)
- unsigned char CorrectCont; //正確輸入計數(shù)
- unsigned char ReInputCont; //重新輸入計數(shù)
- unsigned char code initpassword[6]={0,0,0,0,0,0}; //輸入管理員密碼后將密碼初始為000000
- unsigned char code adminpassword[6]={1,3,1,4,2,0}; //輸入管理員密碼后將密碼初始為000000
- //=====================5ms延時==============================
- void Delay5Ms(void)
- {
- unsigned int TempCyc = 5552;
- while(TempCyc--);
- }
- //===================400ms延時==============================
- void Delay400Ms(void)
- {
- unsigned char TempCycA = 5;
- unsigned int TempCycB;
- while(TempCycA--)
- {
- TempCycB=7269;
- while(TempCycB--);
- }
- }
- //=============================================================================================
- //================================24C02========================================================
- //=============================================================================================
- void mDelay(uint t) //延時
- {
- uchar i;
- while(t--)
- {
- for(i=0;i<125;i++)
- {;}
- }
- }
-
- void Nop(void) //空操作
- {
- _nop_(); //僅作延時用一條語句大約1us
- _nop_();
- _nop_();
- _nop_();
- }
- /*****24c02程序參照24c02時序圖*****/
- /*起始條件*/
- void Start(void)
- {
- Sda=1;
- Scl=1;
- Nop();
- Sda=0;
- Nop();
- }
- /*停止條件*/
- void Stop(void)
- {
- Sda=0;
- Scl=1;
- Nop();
- Sda=1;
- Nop();
- }
- /*應(yīng)答位*/
- void Ack(void)
- {
- Sda=0;
- Nop();
- Scl=1;
- Nop();
- Scl=0;
- }
- /*反向應(yīng)答位*/
- void NoAck(void)
- {
- Sda=1;
- Nop();
- Scl=1;
- Nop();
- Scl=0;
- }
- /*發(fā)送數(shù)據(jù)子程序，Data為要求發(fā)送的數(shù)據(jù)*/
- void Send(uchar Data)
- {
- uchar BitCounter=8;
- uchar temp;
- do
- {
- temp=Data; //將待發(fā)送數(shù)據(jù)暫存temp
- Scl=0;
- Nop();
- if((temp&0x80)==0x80) //將讀到的數(shù)據(jù)&0x80
- Sda=1;
- else
- Sda=0;
- Scl=1;
- temp=Data<<1; //數(shù)據(jù)左移
- Data=temp; //數(shù)據(jù)左移后重新賦值Data
- BitCounter--; //該變量減到0時，數(shù)據(jù)也就傳送完成了
- }
- while(BitCounter); //判斷是否傳送完成
- Scl=0;
- }
- /*讀一字節(jié)的數(shù)據(jù)，并返回該字節(jié)值*/
- uchar Read(void)
- {
- uchar temp=0;
- uchar temp1=0;
- uchar BitCounter=8;
- Sda=1;
- do
- {
- Scl=0;
- Nop();
- Scl=1;
- Nop();
- if(Sda) //數(shù)據(jù)位是否為1
- temp=temp|0x01; //為1 temp的最低位為1（|0x01，就是將最低位變?yōu)?）
- else //如果為0
- temp=temp&0xfe; //temp最低位為0（&0xfe（11111110）最低位就是0）
- if(BitCounter-1) //BitCounter減1后是否為真
- {
- temp1=temp<<1; //temp左移
- temp=temp1;
- }
- BitCounter--; //BitCounter減到0時，數(shù)據(jù)就接收完了
- }
- while(BitCounter); //判斷是否接收完成
- return(temp);
- }
- void WrToROM(uchar Data[],uchar Address,uchar Num)
- {
- uchar i;
- uchar *PData;
- PData=Data;
- for(i=0;i<Num;i++)
- {
- Start();
- Send(0xa0);
- Ack();
- Send(Address+i);
- Ack();
- Send(*(PData+i));
- Ack();
- ……………………
- …………限于本文篇幅 余下代碼請從51黑下載附件…………
Keil代碼與Proteus7.5仿真下載:
密碼鎖（AT89S52 LCD 24C02).zip
(127.98 KB, 下載次數(shù): 31)
2022-5-14 01:32 上傳
點擊文件名下載附件
下載積分: 黑幣 -5
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