51单片机定时器时钟及Proteus仿真图

ID:57095 · 发表于 2023-4-9 21:47

51定时器时钟及protues仿真

单片机源程序如下:

/**************************************************************************************
实验现象：下载程序后，数码管右3位显示0，按K1键将数据写入到EEPROM内保存，
按K2键读取EEPROM内保存的数据，按K3键显示数据加1，按K4键显示数据清零，
最大能写入的数据是255。
注意事项：
***************************************************************************************/
#include "public.h"
#include "24c02.h"
#include "lcd1602.h"
#include "stdio.h"
#define EEPROM_ADDRESS 0 //定义数据存入EEPROM的起始地址
sbit s1=P3^0;
sbit s2=P3^1;
sbit s3=P3^2;
sbit beep=P2^3;
u8 count,s1num;
char miao,shi,fen;
char code table[]=" 2008-9-30 MON";
void di()
{
beep=0;
delay_ms(100);
beep=1;
}
void write_sfm(u8 add,u8 date)
{
u8 shi,ge;
shi=date/10;
ge=date%10;
lcd1602_write_cmd(0x80+0x40+add);
lcd1602_write_data(0x30+shi);
lcd1602_write_data(0x30+ge);
}
void keyscan()
{
if(s1==0)
{
delay_ms(5);
if(s1==0)
{
s1num++;
while(!s1);
di();
if(s1num==1)
{
TR0=0;
lcd1602_write_cmd(0x80+0x40+10);
lcd1602_write_cmd(0x0f);
}
if(s1num==2)
{
lcd1602_write_cmd(0x80+0x40+7);
}
if(s1num==3)
{
lcd1602_write_cmd(0x80+0x40+4);
}
if(s1num==4)
{
s1num=0;
lcd1602_write_cmd(0x0c);
TR0=1;
}
}
}
if(s1num!=0)
{
if(s2==0)
{
delay_ms(5);
if(s2==0)
{
while(!s2);
di();
if(s1num==1)
{
miao++;
if(miao==60)
miao=0;
write_sfm(10,miao);
lcd1602_write_cmd(0x80+0x40+10);
at24c02_write_one_byte(1,miao);
}
if(s1num==2)
{
fen++;
if(fen==60)
fen=0;
write_sfm(7,fen);
lcd1602_write_cmd(0x80+0x40+7);
at24c02_write_one_byte(2,fen);
}
if(s1num==3)
{
shi++;
if(shi==24)
shi=0;
write_sfm(4,shi);
lcd1602_write_cmd(0x80+0x40+4);
at24c02_write_one_byte(3,shi);
}
}
}
if(s3==0)
{
delay_ms(5);
if(s3==0)
{
while(!s3);
di();
if(s1num==1)
{
miao--;
if(miao==-1)
miao=59;
write_sfm(10,miao);
lcd1602_write_cmd(0x80+0x40+10);
at24c02_write_one_byte(1,shi);
}
if(s1num==2)
{
fen--;
if(fen==-1)
fen=59;
write_sfm(7,fen);
lcd1602_write_cmd(0x80+0x40+7);
at24c02_write_one_byte(2,fen);
}
if(s1num==3)
{
shi--;
if(shi==-1)
fen=23;
write_sfm(7,shi);
lcd1602_write_cmd(0x80+0x40+4);
at24c02_write_one_byte(3,shi);
}
}
}
}
}
/*******************************************************************************
* 函数名 : main
* 函数功能 : 主函数
* 输入 : 无
* 输出 : 无
*******************************************************************************/
void main()
{
u8 num;
lcd1602_init();//LCD1602初始化
fen=0;
miao=0;
shi=0;
count=0;
s1num=0;
for(num=0;num<15;num++)
{
lcd1602_write_data(table[num]);
delay_ms(5);
}
lcd1602_write_cmd(0x80+0x40+6);
lcd1602_write_data(':');
delay_ms(5);
lcd1602_write_cmd(0x80+0x40+9);
lcd1602_write_data(':');
delay_ms(5);
miao=at24c02_read_one_byte(1);
fen=at24c02_read_one_byte(2);
shi=at24c02_read_one_byte(3);
write_sfm(10,miao);
write_sfm(7,fen);
write_sfm(4,shi);
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
//lcd1602_show_string(0,0,"24c02save");//第二行显示
while(1)
{
keyscan();
//sprintf(buffer,"%d%d%d",save_buf[0],save_buf[1],save_buf[2]);
//lcd1602_show_string(0,1,buffer);//第二行显示
}
}
void timer0() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
count++;
if(count==20)
{
count=0;
miao++;
if(miao==60)
{
miao=0;
fen++;
if(fen==60)
{
fen=0;
shi++;
if(shi==24)
{
shi=0;
}
write_sfm(4,shi);
at24c02_write_one_byte(3,shi);
}
write_sfm(7,fen);
at24c02_write_one_byte(2,fen);
}
write_sfm(10,miao);
at24c02_write_one_byte(1,miao);
}
}