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想用ds1302和1602液晶做做時鐘的程序，在proteus仿真，但怎么也達不到要求。編譯無錯，運行結果出乎意料，只顯示0，而且時鐘沒工作。
各位大俠幫忙著分析分析，謝謝了。
/*************程序ds1302.c*****************/
#include <reg52.h>
#include "ds1302.h"
#include "lcd1602.h"
//uchar th[]="i am a teacher !";
void main()
{
uchar i;
struct _time time;
// struct _time *t=time;
lcd_init();
ds1302_init();
set_time(ds1302_sec,5);
set_time(ds1302_min,15);
set_time(ds1302_hr,12);
set_time(ds1302_date,21);
set_time(ds1302_mon,12);
set_time(ds1302_day,6);
set_time(ds1302_year,12);
while(1)
{
get_time(&time);
date_to_format(&time);
time_to_format(&time);
lcd_write_cmd(0x80+0);
for(i=0;i<9;i++)
{
lcd_write_dat(time.DateFormat);
//lcd_write_dat(th);
}
lcd_write_cmd(0x80+0x40);
for(i=0;i<9;i++)
{
lcd_write_dat(time.TimeFormat);
//lcd_write_dat(th);
}
//delay_ms(100);
}
}
/*********************程序ds1302.h************************/
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
#define ds1302_sec 0x80
#define ds1302_min 0x82
#define ds1302_hr 0x84
#define ds1302_date 0x86
#define ds1302_mon 0x88
#define ds1302_day 0x8a
#define ds1302_year 0x8c
sbit ds1302_rst=P1^5;
sbit ds1302_sclk=P1^6;
sbit ds1302_io=P1^7;
sbit ACC7=ACC^7;
sbit ACC0=ACC^0;
struct _time
{
unsigned char sec;
unsigned char min;
unsigned char hr;
unsigned char date;
unsigned char mon;
unsigned char day;
unsigned char year;
unsigned char DateFormat[9];
unsigned char TimeFormat[9];
}; //定義的時間類型
void ds1302_write(uchar cmd,uchar dat) //往指定地址寫入數據
{
uchar i;
ds1302_sclk=0;
ds1302_rst=1;
ACC=cmd;
for(i=0;i<8;i++)
{
ds1302_io=ACC0;
ds1302_sclk=1;
ds1302_sclk=0;
ACC=ACC>>1;
}
ACC=dat;
for(i=0;i<8;i++)
{
ds1302_io=ACC0;
ds1302_sclk=1;
ds1302_sclk=0;
ACC=ACC>>1;
}
ds1302_sclk=1;
ds1302_rst=0;
}
uchar ds1302_read(uchar cmd) //讀出指定地址的數據
{
uchar i;
ds1302_sclk=0;
ds1302_rst=1;
ACC=cmd;
for(i=0;i<8;i++)
{
ds1302_sclk=0;
ds1302_io=ACC0;
ds1302_sclk=1;
// ds1302_sclk=0;
ACC=ACC>>1;
}
for(i=0;i<8;i++)
{
// ACC7=ds1302_io;
ACC=ACC>>1;
ds1302_sclk=1;
ds1302_sclk=0;
ACC7=ds1302_io;
}
ds1302_sclk=1;
ds1302_rst=0;
return ACC;
}
void ds1302_SetProtect(bit flag) //設置寫保護
{
if(flag)
ds1302_write(0x8E,0x80);
else
ds1302_write(0x8E,0x00);
}
void set_time(uchar add,uchar var) //設置時間
{
ds1302_SetProtect(0);
ds1302_write(add,((var/10)<<4|(var%10))); //轉成BCD碼
}
void get_time(struct _time *t) //讀取時鐘寄存器放入time結構體
{
uchar var;
var=ds1302_read(ds1302_sec);
t->sec=(var&0x70>>4)*10+(var&0x0f);
var=ds1302_read(ds1302_min);
t->min=(var&0x70>>4)*10+(var&0x0f);
var=ds1302_read(ds1302_hr);
t->hr=(var&0x70>>4)*10+(var&0x0f);
var=ds1302_read(ds1302_date);
t->date=(var&0x70>>4)*10+(var&0x0f);
var=ds1302_read(ds1302_mon);
t->mon=(var&0x70>>4)*10+(var&0x0f);
var=ds1302_read(ds1302_day);
t->day=(var&0x70>>4)*10+(var&0x0f);
var=ds1302_read(ds1302_year);
t->year=(var&0x70>>4)*10+(var&0x0f);
}
void date_to_format(struct _time *t) //將日期數據轉化為日期格式并將數字轉為字符
{
t->DateFormat[0] = t->year/10+'0';
t->DateFormat[1] = t->year%10+'0';
t->DateFormat[2] ='-';
t->DateFormat[3] = t->mon/10+'0';
t->DateFormat[4] = t->mon%10+'0';
t->DateFormat[5] = '-';
t->DateFormat[6] = t->date/10+'0';
t->DateFormat[7] = t->date%10+'0';
t->DateFormat[8] = '\0';
}
void time_to_format(struct _time *t) //將時間數據轉化為時間格式并將數字轉為字符
{
t->TimeFormat[0] = t->hr/10+'0';
t->TimeFormat[1] = t->hr%10+'0';
t->TimeFormat[2] =':';
t->TimeFormat[3] = t->min/10+'0';
t->TimeFormat[4] = t->min%10+'0';
t->TimeFormat[5] = ':';
t->TimeFormat[6] = t->sec/10+'0';
t->TimeFormat[7] = t->sec%10+'0';
t->TimeFormat[8] = '\0';
}
//初始化啟動時鐘
void ds1302_init()
{
uchar second=ds1302_read(ds1302_sec);
if(second&0x80)
set_time(ds1302_sec,0);
}
/****************程序lcd1602.h*************************/
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit lcd_rs=P2^0;
sbit lcd_rw=P2^1;
sbit lcd_e=P2^2;
sfr lcd_d=0x80;
void delay_ms(uint ms)
{
uint x,y;
for(x=ms;x>0;x--)
for(y=120;y>0;y--);
}
void lcd_write_cmd(uchar cmd)
{
lcd_rs=0;
lcd_rw=0;
lcd_e=0;
lcd_d=cmd;
lcd_e=1;
delay_ms(1);
lcd_e=0;
}
void lcd_write_dat(uchar dat)
{
lcd_rs=1;
lcd_rw=0;
lcd_e=0;
lcd_d=dat;
lcd_e=1;
delay_ms(1);
lcd_e=0;
}
void lcd_init()
{
lcd_write_cmd(0x38);
delay_ms(1);
lcd_write_cmd(0x01);
delay_ms(1);
lcd_write_cmd(0x0c);
delay_ms(1);
lcd_write_cmd(0x06);
delay_ms(1);
} | 
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