制作51单片机+oled12864屏幕+掉电储存密码锁源程序

ID:926010 · 发表于 2022-5-25 13:32

制作密码锁，在51黑里受益颇多；这次设计结束，反馈给大家
制作出来的实物图如下：
图片1.png

单片机源程序如下:

#include<reg51.h>
#include<OLED.h>
#include<keypad.h>
#include<intrins.h>
#include<eeprom.h>
#define uchar unsigned char
#define uint unsigned int
sbit LED1=P1^7;
sbit BEEP=P3^7;
uchar x=11,count,j;
void Delay() //@11.0592MHz
{
unsigned char i, t, k;
_nop_();
_nop_();
i = 20;
t = 3;
k = 203;
do
{
do
{
while (--k);
} while (--t);
} while (--i);
}
void Timer_init (void)
{
EA = 1; //中断总开关
TMOD=0x01; //设置定时器0工作方式1后面运行TR位启动
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
ET0=1;
// IT0 = 1; //1：下沿触发 0：低电平触发
}
void Tenseconds()
{
if(x==10)
OLED_DisplayText(1,3,"10",OLED_NOT_INVERT_COLOR);
if(x==9)
OLED_DisplayText(1,3," 9",OLED_NOT_INVERT_COLOR);
if(x==8)
OLED_DisplayText(1,3," 8",OLED_NOT_INVERT_COLOR);
if(x==7)
OLED_DisplayText(1,3," 7",OLED_NOT_INVERT_COLOR);
if(x==6)
OLED_DisplayText(1,3," 6",OLED_NOT_INVERT_COLOR);
if(x==5)
OLED_DisplayText(1,3," 5",OLED_NOT_INVERT_COLOR);
if(x==4)
OLED_DisplayText(1,3," 4",OLED_NOT_INVERT_COLOR);
if(x==3)
OLED_DisplayText(1,3," 3",OLED_NOT_INVERT_COLOR);
if(x==2)
OLED_DisplayText(1,3," 2",OLED_NOT_INVERT_COLOR);
if(x==1)
OLED_DisplayText(1,3," 1",OLED_NOT_INVERT_COLOR);
if(x==0)
{
OLED_Clear();
OLED_DisplayText(1,1,"请按返回键返回",OLED_NOT_INVERT_COLOR);
OLED_DisplayText(3,0,"返回",OLED_NOT_INVERT_COLOR);
j=0;
}
}
void Enter() //确定键，只有按下s13才可以继续进行
{ uchar dat;
do{P2=0xf0;
while(P2==0xf0);
dat=key_scan();
}while(dat!=0x0a);
}
void System()
{
OLED_DisplayText(0,2,"淮北师范大学",OLED_NOT_INVERT_COLOR);
OLED_DisplayText(1,2,"电子信息工程班",OLED_NOT_INVERT_COLOR);
OLED_DisplayText(2,2,"20191304032",OLED_NOT_INVERT_COLOR);
Delay();
}
void press(uchar *s,uchar x) //按键输入
{
uchar dat;
int num;
for(num=0;num<=4;num++)
{
//**************************************************
if(num>=4)
{ P2=0xf0;
while(P2==0xf0);
dat=key_scan();
if((dat!=0x0a) && (dat!=0x0b)&& (dat!=0x0c))
{
num--;
}
if(dat==0x0a)
{
OLED_DisplayText(x,num," ",OLED_NOT_INVERT_COLOR);
}
if(dat==0x0b)
{
OLED_DisplayText(x,num-1,"-",OLED_NOT_INVERT_COLOR);
s--;
num=num-2;
}
if(dat==0x0c)
{
s=s-num;
num=-1;
OLED_DisplayText(x,0,"----",OLED_NOT_INVERT_COLOR);
}
}
else
{
P2=0xf0;
while(P2==0xf0);
dat=key_scan();
if((dat!=0x0a)&&(dat!=0x0b)&&(dat!=0x0c))
{ *s=dat;
OLED_DisplayText(x,num,"*",OLED_NOT_INVERT_COLOR);
s++;
}
if(dat==0x0b)
{
OLED_DisplayText(x,num-1,"-",OLED_NOT_INVERT_COLOR);
s--;
num=num-2;
}
if(dat==0x0c)
{
s=s-num;
num=-1;
OLED_DisplayText(x,0,"----",OLED_NOT_INVERT_COLOR);
}
}
}
}
void main()
{ int dat,x;
OLED_Init();
Timer_init ();
System();
read();//第一次输入烧录时，请将这里改为 “write();”！！！！
do{
LED1=1;
BEEP=1;
OLED_Clear();
OLED_DisplayText(0,0,"请输入密码:",OLED_NOT_INVERT_COLOR);//OLED显示文本(行(0到3行), 列(0到15列),文本, 是否反色)
OLED_DisplayText(1,0,"----",OLED_NOT_INVERT_COLOR);//OLED显示文本(行(0到3行), 列(0到15列),文本, 是否反色)
OLED_DisplayText(3,0,"确定",OLED_NOT_INVERT_COLOR);//OLED显示文本(行(0到3行), 列(0到15列),文本, 是否反色)
OLED_DisplayText(3,12,"删除",OLED_NOT_INVERT_COLOR);//OLED显示文本(行(0到3行), 列(0到15列),文本, 是否反色)
press(key,1);
if((key[0]==iic[0])&&(key[1]==iic[1])&&(key[2]==iic[2])&&(key[3]==iic[3]))
{
j=0;
OLED_Clear();
OLED_DisplayText(3,12," ",OLED_NOT_INVERT_COLOR);
OLED_DisplayText(0,0,"直接开锁请按1",OLED_NOT_INVERT_COLOR);
OLED_DisplayText(1,0,"修改密码请按2",OLED_NOT_INVERT_COLOR);
do
{
P2=0xf0; //键入1或2继续执行下面语句，否则等待
while(P2==0xf0);
dat=key_scan();
}while(dat!=0x01&&dat!=0x02);
if(dat==1) //开锁
{
OLED_Clear();
LED1=0;
OLED_DisplayText(1,4,"开锁成功!",OLED_INVERT_COLOR );
OLED_DisplayText(3,0,"返回",OLED_NOT_INVERT_COLOR );
Enter();
}
if(dat==2) //修改密码
{ OLED_Clear();
do{
OLED_Clear();
OLED_DisplayText(0,0,"输入修改密码:",OLED_NOT_INVERT_COLOR);
OLED_DisplayText(1,0,"----",OLED_NOT_INVERT_COLOR);
press(key,1);
OLED_DisplayText(2,0,"确定密码:",OLED_NOT_INVERT_COLOR); //再次输入密码
OLED_DisplayText(3,0,"----",OLED_NOT_INVERT_COLOR);
press(iic,3);
if((key[0]==iic[0])&&(key[1]==iic[1])&&(key[2]==iic[2])&&(key[3]==iic[3]))
{
OLED_Clear();
OLED_DisplayText(1,4,"修改成功!",OLED_INVERT_COLOR);
OLED_DisplayText(3,0,"返回",OLED_NOT_INVERT_COLOR );
Erase();//第一次输入烧录时，请将这里注释掉！！！！
write();//第一次输入烧录时，请将这里注释掉！！！！
Enter();break; //修改密码成功
}
else //修改密码不成功，重新修改
{
OLED_Clear();
OLED_DisplayText(3,12," ",OLED_NOT_INVERT_COLOR);
OLED_DisplayText(1,2,"两次密码不一致",OLED_INVERT_COLOR);
OLED_DisplayText(2,4,"请重新输入",OLED_INVERT_COLOR);
OLED_DisplayText(3,0,"返回",OLED_NOT_INVERT_COLOR );
Enter();
}
}while(1);
}
}
else //密码不正确，重新输入密码
{
j++;
if(j==3) //如果输错超过3次，开启定时器中断，键盘锁住，10s内无法操作
{
TR0=1;
}
OLED_Clear();
if (j<=2)
{
BEEP=0;
}
else
{BEEP=1;}
OLED_DisplayText(3,12," ",OLED_NOT_INVERT_COLOR);
OLED_DisplayText(1,4,"密码错误",OLED_INVERT_COLOR);
OLED_DisplayText(3,0,"返回",OLED_NOT_INVERT_COLOR );
Enter();
}
}
while(1);
}
void TimeInterrupt() interrupt 1 //定时器中断服务程序
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
count++;
if (count>=20)
{
count=0;
x--;
OLED_DisplayText(1,5,"秒后解锁",OLED_NOT_INVERT_COLOR);
Tenseconds();
if(x<=0)
{
TR0=0;
x=11;
}
}
}

复制代码

附件是Keil5代码下载(1个文件):

oled12864(IIC) 掉电储存密码锁.zip (84.67 KB, 下载次数: 79)

ID:796844 · 发表于 2022-5-26 09:34

有PCB文件吗?

ID:926010 · 发表于 2022-5-27 11:02

本帖最后由生态蘑菇于 2022-5-27 21:57 编辑

学校发的板子，给了原理图

ID:930312 · 发表于 2022-5-28 16:41

生态蘑菇发表于 2022-5-27 11:02
学校发的板子，给了原理图

哪一个是断电储存模块的引脚

ID:930312 · 发表于 2022-5-28 17:07

掉电保存在哪里？

ID:926010 · 发表于 2022-5-29 10:31

不需要额外引脚，我保存到单片机内部的eeprom里了（2000-2003），单片机型号就是普通的stc89c52rc

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制作51单片机+oled12864屏幕+掉电储存密码锁源程序

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