仿真程序：
#include
#include
#include
#defineuintunsignedint
#defineucharunsignedchar
//*******LCD*******
sbitLCDRS=P2^0; //LCD數據/命令選擇端
sbitLCDRW=P2^1;
sbitLCDEN=P2^2; //LCD使能新號端
//******DS1302******
sbitIO=P1^0; //1302數據線
sbitSCLK=P1^1; //1302時鐘線
sbitRST=P1^2; //復位
uintnum=0;
//uchar week[]={"SUN","***","MON","TUS","WEN","THU","FRI","SAT"};
ucharDate[]={"Date:2000-00-00"};
ucharTime[]={"Time:*00:00-00*"};
uchardate_time[7]; //從ds1302讀取的當前日期時間
//=======延時=======
voiddelay(uintz)
{
uintx,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
//********向1302寫數據*********
voidwrite_ds1302(uchardat)
{
uchari;
for(i=0;i<8;i++)
{
IO=dat&0x01; //保持最後一位為1，讀狀態
SCLK=1;
delay(1);
SCLK=0;
dat>>=1;
}
}
//*********從1302讀數據*********
ucharread_ds1302()
{
uchari,b=0x00;
for(i=0;i<8;i++)
{
b|=_crol_((uchar)IO,i);
SCLK=1;
delay(1);
SCLK=0;
}
returnb/16*10+b%16; //與BCD碼轉換
}
//*********從指定位置讀數據********
ucharread_data(ucharaddr)
{
uchardat;
RST=0;
SCLK=0;
RST=1;
write_ds1302(addr);
dat=read_ds1302();
SCLK=1;
RST=0;
returndat;
}
//*********讀取當前日期時間*********
voidread_date_time()
{
uchari,addr=0x81;
for(i=0;i<7;i++)
{
date_time[i]=read_data(addr);
addr+=2;
}
}
//LCD寫指令
voidlcd_write_com(ucharcom)
{
LCDRS=0; //RS為0時，寫指令，RS為1時，寫數據
P0=com;
delay(5);
LCDEN=1;
delay(5);
LCDEN=0;
}
//LCD寫數據
voidlcd_write_data(uchardat)
{
LCDRS=1;
P0=dat;
delay(5);
LCDEN=1;
delay(5);
LCDEN=0;
}
//--LCD初始化--
voidlcd_init()
{
LCDEN=0;
lcd_write_com(0x38); //LCD顯示模式設置
lcd_write_com(0x0c); //LCD顯示開/關及光標設置
lcd_write_com(0x06); //當寫一個字符後地址指針加1，且光標加1
lcd_write_com(0x01); //顯示清屏
}
//----設置液晶顯示位置-
voidset_lcd_pos(ucharp)
{
lcd_write_com(p|0x80);
}
//----液晶顯示程序
voidlcd_print(ucharp,uchar*s)
{
set_lcd_pos(p);
for(num=0;num<16;num++)
{
lcd_write_data(s[num]);
delay(10);
}
}
//日期時間轉換-
voidformat_datetime(uchard,uchar*p)
{
p[0]=d/10+0;
p[1]=d%10+0;
}
//----主程序
voidmain()
{
LCDRW=0;
lcd_init();
while(1)
{
read_date_time();
format_datetime(date_time[6],Date+8); //年月日
format_datetime(date_time[4],Date+11);
format_datetime(date_time[3],Date+14);
// strcpy(Date+13,week[date_time[5]]);
format_datetime(date_time[2],Time+7); //時間轉換
format_datetime(date_time[1],Time+10);
format_datetime(date_time[0],Time+13);
lcd_print(0x00,Date);
lcd_print(0x40,Time);
}
}