AT89C51单片机电子密码锁

基于AT89C51单片机电子密码锁

#include "main.h"

/******************** LCD PART START *******************************/

//5ms延时

void Delay5Ms(void)

{

unsigned int TempCyc = 5552;

while(TempCyc--);

}

//读状态

unsigned char ReadStatusLCM(void)

{

LCM_Data = 0xFF;

LCM_RS = 0;

LCM_RW = 1;

LCM_E = 0;

LCM_E = 0;

LCM_E = 1;

Delay5Ms();

while (LCM_Data & Busy); //检测忙信号

return(LCM_Data);

}

//写数据

void WriteDataLCM(unsigned char WDLCM)

{

ReadStatusLCM(); //检测忙

LCM_Data = WDLCM;

LCM_RS = 1;

LCM_RW = 0;

LCM_E = 0; //若晶振速度太高可以在这后加小的延时

LCM_E = 0; //延时

LCM_E = 1;

}

//写指令

void WriteCommandLCM(unsigned char WCLCM,BuysC) //BuysC为0时忽略忙检测

{

if (BuysC) ReadStatusLCM(); //根据需要检测忙

LCM_Data = WCLCM;

LCM_RS = 0;

LCM_RW = 0;

LCM_E = 0;

LCM_E = 0;

LCM_E = 1;

}

//读数据

unsigned char ReadDataLCM(void)

{

LCM_RS = 1;

LCM_RW = 1;

LCM_E = 0;

LCM_E = 0;

LCM_E = 1;

return(LCM_Data);

}

void LCMInit(void) //LCM初始化

{

LCM_Data = 0;

WriteCommandLCM(0x38,0); //三次显示模式设置，不检测忙信号

Delay5Ms();

WriteCommandLCM(0x38,0);

Delay5Ms();

WriteCommandLCM(0x38,0);

Delay5Ms();

WriteCommandLCM(0x38,1); //显示模式设置,开始要求每次检测忙信号WriteCommandLCM(0x08,1); //关闭显示

WriteCommandLCM(0x01,1); //显示清屏

WriteCommandLCM(0x06,1); // 显示光标移动设置

WriteCommandLCM(0x0C,1); // 显示开及光标设置

}

//按指定位置显示一个字符,x表示列，Y表示行

void LCD_write_char(unsigned char X,unsigned char Y, unsigned char DData)

{

Y &= 0x1;

X &= 0xF; //限制X不能大于15，Y不能大于1

if (Y)

X |= 0x40; //当要显示第二行时地址码+0x40;

X |= 0x80; // 算出指令码

WriteCommandLCM(X, 0); //这里不检测忙信号，发送地址码

WriteDataLCM(DData);

}

//按指定位置显示一串字符

void LCD_write_string(unsigned char X,unsigned char Y, unsigned char code *DData)

{

unsigned char ListLength;

ListLength = 0;

Y &= 0x1;

X &= 0xF; //限制X不能大于15，Y不能大于1

while (*DData) //若到达字串尾则退出'\0'就是0

{

if (X <= 0xF) //X坐标应小于0xF

{

LCD_write_char(X,Y, *DData); //显示单个字符

DData++;

X++;

}

}

}

/************/

#include

#include

#define uchar unsigned char

#define uint unsigned int

/******************** LCD PART START *******************************/

void delay(uint z) //延时

{

uint x,y;

for(x=z;x>0;x--)

for(y=124;y>0;y--);

}

sbit e=P2^5;

sbit rw=P2^6;

sbit sr=P2^7;

uchar code name[]="zxs";

uchar code name1[]="zcf";

uchar code name2[]="zx";