用51单片机做一个LED显示的电子钟

Question

用89C51设计LED电子钟 6个数码管显示时分秒，要求通过键盘输入初值，打上开关K1时允许设定时间，按下开关K1时开始运行显示时间，K2用做选择是24小时制还是12小时制

答得正确又快的可以获得额外加分~
要汇编语言的= =

Answer 1

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code table[]="ME-400-A clock";
uchar code table1[]=" --:--:-- ";
uchar code table2[]="ALL:00:00:-- ";
uchar code table3[]=" ";
uchar clk_time[3]; //秒，分，时寄存器初始值
sbit T_RST=P2^2;//ds1302-5
sbit T_IO=P2^3;//ds1302-6
sbit T_CLK=P2^4;//ds1302-7
sbit en=P2^5; //参照LCD1602说明档，使能信号
sbit rw=P2^6; //。。。。。。。。，读写信号端（输入高电频时为读，低电为写）
sbit rs=P2^7; //。。。。。。。。，数据/命令选择端（H/L）
sbit led=P1^0;
sbit dula=P1^1;
sbit wela=P1^2;
sbit ACC0=ACC^0;
sbit ACC7=ACC^7;
sbit up=P3^3;
sbit down=P3^4;
sbit set=P3^2;
sbit did=P1^4;
uchar num,clock_ss,clock_sg,clock_fs,clock_fg,clock_ms,clock_mg,b,clock_s,clock_g;
char hour,mie,sei,c,nhour,nmie,shour,smie;
/******************DS1302：写入操作(上升沿)*********************/

void write_byte(uchar da)
{
uchar i;
ACC=da;
for(i=8;i>0;i--)
{
T_IO=ACC0;
T_CLK=0;
T_CLK=1;
ACC=ACC>>1;
}
}

/******************DS1302：读取操作（下降沿）*****************/
uchar read_byte(void)
{
uchar i;
for(i=0;i<8;i++)
{
ACC=ACC>>1;
T_CLK = 1;
T_CLK = 0;
ACC7 = T_IO;
}
return(ACC);

}

/******************DS1302:写入数据（先送地址，再写数据）***************************/
void write_1302(uchar addr,uchar da)
{
T_RST=0; //停止工作
T_CLK=0; //只有在CLK为低电平时，才能将RST置为高电平,然后才能传输数据
T_RST=1; //重新工作
write_byte(addr); //写入地址

write_byte(da);
T_RST=0;
T_CLK=1;
}

/******************DS1302:读取数据（先送地址，再读数据）**************************/
uchar read_1302(uchar addr)
{
uchar temp;
T_RST=0; //停止工作
T_CLK=0;
T_RST=1; //重新工作
write_byte(addr); //写入地址
temp=read_byte();
T_RST=0;
T_CLK=1; //停止工作
return(temp);
}

/***********************延时程序=a*1ms**************************************/
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void fn()
{
did=0;
delay(120);
did=1;
delay(120);
did=0;
delay(120);
did=1;
delay(120);
did=0;
delay(120);
did=1;
delay(120);
did=0;
delay(320);
did=1;
delay(400);
}
void write_com(uchar com)
{
led=1;
wela=1;
P0=0xff;
delay(1);
led=0;
wela=0;
P0=0x00;
dula=1;
delay(1);
dula=0;
rs=0;
P0=com;
delay(5);
en=1;
delay(5);
en=0;
}

void write_data(uchar date)
{
led=1;
wela=1;
P0=0xff;
delay(1);
led=0;
wela=0;
P0=0x00;
dula=1;
delay(1);
dula=0;
rs=1;
P0=date;
delay(5);
en=1;
delay(5);
en=0;
}
void morning()
{ shour=clock_ss*10+clock_sg;
smie=clock_fs*10+clock_fg;
if(b==0)
{
if(nhour==shour)
{
if(smie>=nmie)
{
fn();
}
}
}

}
void init()
{
b=0;
P0=0xff;
delay(5);
led=1;
delay(5);
P0=0xff;
led=0;
dula=0;
wela=1;
delay(5);
wela=0;//关ME-400开发板数码管
nhour=0;
nmie=0;
rw=0;
en=0;
write_com(0x38);//设置液晶
write_com(0x0c);//设光标等
write_com(0x06);//写一个字符地址指针加1且光标加1
write_com(0x01);//清屏
write_com(0x80);//设置s地址指针
}
void display(uchar add,date)
{
if(b==0)
{
clock_ms=clk_time[0]/ 16; clock_mg=clk_time[0]%16;
led=0;
clock_fs=clk_time[1]/ 16; clock_fg=clk_time[1]%16;
led=0;
clock_ss=clk_time[2]/ 16; clock_sg=clk_time[2]%16;
write_com(0x80+0x44);
write_data(0x30+clock_ss);
write_com(0x80+0x45);
write_data(0x30+clock_sg);
write_com(0x80+0x47);
write_data(0x30+clock_fs);
write_com(0x80+0x48);
write_data(0x30+clock_fg);
write_com(0x80+0x4a);
write_data(0x30+clock_ms);
write_com(0x80+0x4b);
write_data(0x30+clock_mg);

}
if(b!=0)
{
clock_s=date/ 10; clock_g=date%10;
write_com(0x80+0x40+add);
write_data(0x30+clock_s);
write_data(0x30+clock_g);
}

}
void key()
{
uchar clock_s1, clock_s2, clock_f1, clock_f2;
rw=0;

if(set==0)
{
delay(10);
if(set==0)
{
did=0;
delay(10); did=1;
b++;

}
while(!set);

if(b==1)
{
hour=clock_ss*10+clock_sg;
mie=clock_fs*10+clock_fg;
write_com(0x80+0x45);
write_com(0x0f);

}
if(b==2)
{
write_com(0x80+0x48);

}
if(b==3)
{
write_com(0x80+0x40);
for(num=0;num<13;num++)
{
write_data(table2[num]);

}

write_com(0x80+0x45); display(4,nhour);write_com(0x80+0x45);
}
if(b==4)
{

write_com(0x80+0x48);
display(7,nmie); write_com(0x80+0x48);

}
if(b==5)
{
write_com(0x80+0x40);
for(num=0;num<4;num++)
{
write_data(table3[num]);

}
write_com(0x80+0x45);
write_com(0x0c);
b=0;
clock_s1=hour/10;//十进制转十六进制
clock_s2=hour%10;//十进制转十六进制
clock_s1=clock_s1&0xff;//十进制转十六进制
clock_s2=clock_s2&0xff;//十进制转十六进制
clock_s1<<=4;//十进制转十六进制
clock_s1=clock_s1|clock_s2;//十进制转十六进制

clock_f1=mie/10;//十进制转十六进制
clock_f2=mie%10;//十进制转十六进制
clock_f1=clock_f1&0xff; //全1出1 与运算
clock_f2=clock_f2&0xff;//十进制转十六进制
clock_f1<<=4;//十进制转十六进制
clock_f1=clock_f1|clock_f2;//十进制转十六进制

write_1302(0x8e,0x00); //WP=0 写操作
write_1302(0x80,0x00);//写秒
write_1302(0x82,clock_f1);//写分
write_1302(0x84,clock_s1);//写时
write_1302(0x86,0x14);//写日
write_1302(0x88,0x02);//写月
write_1302(0x8a,0x06);//写星期
write_1302(0x8c,0x09);
write_1302(0x8e,0x80); //WP=1 写保护

}
}
if(b!=0)
{
if(up==0)
{
delay(10);
if(up==0)
{
did=0;
delay(10);
did=1;
while(!up);
if(b==1)
{

hour++;
if(hour>=24)
{
delay(1);
hour=0;
}
display(4,hour);
write_com(0x80+0x45);

}
if(b==2)
{
mie++;

if(mie>=60)
{
mie=0;
}
display(7,mie);
write_com(0x80+0x48);
}
if(b==3)
{

nhour++;
if(nhour>=24)
{
delay(1);
nhour=0;
}
display(4,nhour);
write_com(0x80+0x45);

}
if(b==4)
{
nmie++;

if(nmie>=60)
{
nmie=0;
}
display(7,nmie);
write_com(0x80+0x48);
}
}

}

if(down==0)
{
delay(10);
if(down==0)
{
did=0;
delay(10);
did=1;
while(!down);
if(b==1)
{
hour--;
if(hour<0)
{

hour=23;
}
display(4,hour);
write_com(0x80+0x45);

}
if(b==2)
{
mie--;
if(mie<0)
{
mie=59;
}
display(7,mie);
write_com(0x80+0x48);
}
if(b==3)
{
nhour--;
if(nhour<0)
{

nhour=23;
}
display(4,nhour);
write_com(0x80+0x45);

}
if(b==4)
{
nmie--;
if(nmie<0)
{
nmie=59;
}
display(7,nmie);
write_com(0x80+0x48);
}

}

}
}
}

void main()
{
uchar temp=0x80;
uchar i;
init();
for(num=0;num<14;num++)
{
write_data(table[num]);
delay(100);
}

write_com(0x80+0x40); // 设置数据地址指针为0X40
for(num=0;num<15;num++)
{
write_data(table1[num]);

}
/*for(num=0;num<16;num++)
{
write_com(0x18);
delay(20);
}*/
write_1302(0x8e,0x00);
write_1302(0x90,0xa4);
write_1302(0x8e,0x80);
while(1)
{

if(b==0)

{ temp=0x81;
for(i=0;i<3;i++)
{
clk_time[i]=read_1302(temp);
temp+=2;
}
display(0x4b,0x00);
}

morning();
key();

}
}

1602做的时钟