LCD1602液晶显示DS1302实时时钟Proteus仿真

仿真程序：

#include

#include

#include

#defineuintunsignedint

#defineucharunsignedchar

//*******LCD*******

sbitLCDRS=P2^0; //LCD数据/命令选择端

sbitLCDRW=P2^1;

sbitLCDEN=P2^2; //LCD使能新号端

//******DS1302******

sbitIO=P1^0; //1302数据线

sbitSCLK=P1^1; //1302时钟线

sbitRST=P1^2; //复位

uintnum=0;

//uchar week[]={"SUN","***","MON","TUS","WEN","THU","FRI","SAT"};

ucharDate[]={"Date:2000-00-00"};

ucharTime[]={"Time:*00:00-00*"};

uchardate_time[7]; //从ds1302读取的当前日期时间

//=======延时=======

voiddelay(uintz)

{

uintx,y;

for(x=z;x>0;x--)

for(y=110;y>0;y--);

}

//********向1302写数据*********

voidwrite_ds1302(uchardat)

{

uchari;

for(i=0;i<8;i++)

{

IO=dat&0x01; //保持最后一位为1，读状态

SCLK=1;

delay(1);

SCLK=0;

dat>>=1;

}

}

//*********从1302读数据*********

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; //与BCD码转换

}

//*********从指定位置读数据********

ucharread_data(ucharaddr)

{

uchardat;

RST=0;

SCLK=0;

RST=1;

write_ds1302(addr);

dat=read_ds1302();

SCLK=1;

RST=0;

returndat;

}

//*********读取当前日期时间*********

voidread_date_time()

{

uchari,addr=0x81;

for(i=0;i<7;i++)

{

date_time[i]=read_data(addr);

addr+=2;

}

}

//----------LCD写指令----------

voidlcd_write_com(ucharcom)

{

LCDRS=0; //RS为0时，写指令，RS为1时，写数据

P0=com;

delay(5);

LCDEN=1;

delay(5);

LCDEN=0;

}

//----------LCD写数据----------

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显示模式设置

lcd_write_com(0x0c); //LCD显示开/关及光标设置

lcd_write_com(0x06); //当写一个字符后地址指针加1，且光标加1

lcd_write_com(0x01); //显示清屏

}

//---------设置液晶显示位置-----------

voidset_lcd_pos(ucharp)

{

lcd_write_com(p|0x80);

}

//---------液晶显示程序----------

voidlcd_print(ucharp,uchar*s)

{

set_lcd_pos(p);

for(num=0;num<16;num++)

{

lcd_write_data(s[num]);

delay(10);

}

}

//----------日期时间转换-----------

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); //时间转换

format_datetime(date_time[1],Time+10);

format_datetime(date_time[0],Time+13);

lcd_print(0x00,Date);

lcd_print(0x40,Time);

}

}