51单片机初学密码锁代码

hugo17 · 发表于 2021-6-26 01:52:25

51单片机初学密码锁代码

wanbi=1; break;

#include

#define uint unsigned int

#define uchar unsigned char

uchar old1,old2,old3,old4,old5,old6; //原始密码000000

uchar new1,new2,new3,new4,new5,new6; //每次MCU采集到的密码输入

uchar a=16,b=16,c=16,d=16,e=16,f=16; //送入数码管显示的变量

uchar wei,key,temp;

bit allow,genggai,ok,wanbi,retry,close; //各个状态位

sbit dula=P2^6;

sbit wela=P2^7;

sbit beep=P2^3;

sbit sda=P2^0; //IO口定义

sbit scl=P2^1;

unsigned char code table[]=

{0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,

0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00,0x40};

/*****************IIC芯片24C02存储器驱动程序************************************/

void nop()

{

_nop_();

}

/////////24C02读写驱动程序////////////////////

void delay1(unsigned int m)

{ unsigned int n;

for(n=0;n
}

void init() //24c02初始化子程序
{
scl=1;
nop();
sda=1;
nop();
}

void start() //启动I2C总线
{
sda=1;
nop();
scl=1;
nop();
sda=0;
nop();
scl=0;
nop();
}

void stop() //停止I2C总线
{
sda=0;
nop();
scl=1;
nop();
sda=1;
nop();
}

void writebyte(unsigned char j) //写一个字节
{
unsigned char i,temp;
temp=j;
for (i=0;i<8;i++)
{
temp=temp<<1;
scl=0;
nop();
sda=CY; //temp左移时，移出的值放入了CY中
nop();
scl=1; //待sda线上的数据稳定后，将scl拉高
nop();
}
scl=0;
nop();
sda=1;
nop();
}

unsigned char readbyte() //读一个字节
{
unsigned char i,j,k=0;
scl=0; nop(); sda=1;
for (i=0;i<8;i++)
{
nop(); scl=1; nop();
if(sda==1)
j=1;
else
j=0;
k=(k<<1)	j;
scl=0;
}
nop();
return(k);
}

void clock() //I2C总线时钟
{
unsigned char i=0;
scl=1;
nop();
while((sda==1)&&(i<255))
i++;
scl=0;
nop();
}

////////从24c02的地址address中读取一个字节数据/////
unsigned char read24c02(unsigned char address)
{
unsigned char i;
start();
writebyte(0xa0);
clock();
writebyte(address);
clock();
start();
writebyte(0xa1);
clock();
i=readbyte();
stop();
delay1(100);
return(i);
}

//////向24c02的address地址中写入一字节数据info/////
void write24c02(unsigned char address,unsigned char info)
{
start();
writebyte(0xa0);
clock();
writebyte(address);
clock();
writebyte(info);
clock();
stop();
delay1(5000); //这个延时一定要足够长，否则会出错。因为24c02在从sda上取得数据后，还需要一定时间的烧录过程。
}
/**************************密码锁程序模块******************************************************/

void delay(unsigned char i)
{
uchar j,k;
for(j=i;j>0;j--)
for(k=125;k>0;k--);
}

void display(uchar a,uchar b,uchar c,uchar d,uchar e,uchar f)
{
dula=0;
P0=table[a];
dula=1;
dula=0;

wela=0;
P0=0xfe;
wela=1;
wela=0;
delay(5);

P0=table;
dula=1;
dula=0;

P0=0xfd;
wela=1;
wela=0;
delay(5);

P0=table[c];
dula=1;
dula=0;

P0=0xfb;
wela=1;
wela=0;
delay(5);

P0=table[d];
dula=1;
dula=0;

P0=0xf7;
wela=1;
wela=0;
delay(5);

P0=table[e];
dula=1;
dula=0;

P0=0xef;
wela=1;
wela=0;
delay(5);

P0=table[f];
dula=1;
dula=0;

P0=0xdf;
wela=1;
wela=0;
delay(5);
}


void keyscan()
{
{
P3=0xfe;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xee:
key=0;
wei++;
break;

case 0xde:
key=1;
wei++;
break;

case 0xbe:
key=2;
wei++;
break;

case 0x7e:
key=3;
wei++;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
beep=0;
}
beep=1;
}
}
P3=0xfd;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xed:
key=4;
wei++;
break;

case 0xdd:
key=5;
wei++;
break;

case 0xbd:
key=6;
wei++;
break;

case 0x7d:
key=7;
wei++;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
beep=0;
}
beep=1;
}
}
P3=0xfb;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xeb:
key=8;
wei++;
break;

case 0xdb:
key=9;
wei++;
break;

case 0xbb:
genggai=1;
wei=0;
break;

case 0x7b:
if(allow)
ok=1;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
beep=0;
}
beep=1;
}
}
P3=0xf7;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xe7:
retry=1;
break;

case 0xd7:
close=1;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
beep=0;
}
beep=1;
}
}
}
}

void shumima() //对按键采集来的数据进行分配
{
if(!wanbi)
{
switch(wei)
{
case 1:new1=key;
if(!allow) a=17;
else a=key; break;
case 2:new2=key;
if(a==17) b=17;
else b=key; break;
case 3:new3=key;
if(a==17) c=17;
else c=key; break;
case 4:new4=key;
if(a==17) d=17;
else d=key; break;
case 5:new5=key;
if(a==17) e=17;
else e=key; break;
case 6:new6=key;
if(a==17) f=17;
else f=key;