clock11-29_2

单片机 89s52+ds12b887+ds18b20时钟温度程序.rar

/*
以写内容：初始化液晶后读时钟将时钟写入液晶，按键中断中setupint=1时读取
年数据然后写向0x80+0x40;读取液晶值已经完成。08-11-29


*/
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit rs=P1^0;
sbit lcde=P1^1;
sbit lcdrw=P1^6;
sbit dscs=P1^2;
sbit dsas=P1^3;
sbit dsrw=P1^4;
sbit dsds=P1^5;
sbit cancle=P3^5;
sbit dat=P3^7;
uchar code nyr[]=" 20  -  -";
uchar code sfm[]="   :  :       C";
uchar code addnyr[]={0x83,0x86,0x89,0x8c,0xc1,0xc4,0xc7};
uchar code addc[]={0x09,0x08,0x07,0x06,0x04,0x02,0x00};
uchar code week[]="SunMonTueWedThuFriSta";
uchar setupint,readc;
uint dstemp;//温度值
uchar dszf;//正负温度;
uchar data wd[5];//五位温度;
void delay(uchar x)
{
	uchar j,i;
	for(i=x;i>0;i--)
	for(j=110;j>0;j--);
}
void write_com(uchar command)
{
 	 lcdrw=0;
	 rs=0;
	 lcde=0;
	 P0=command;
	 delay(5);
	 lcde=1;
	 delay(5);
	 lcde=0;
}
uchar read_date(uchar radd)
{
	uchar rclock,rclock1,rclock2;
	write_com(radd);
	rs=1;
	lcdrw=1;
	lcde=1;
	P0=0xff;
	delay(5);
	rclock1=P0;
	delay(5);

	write_com(radd+1);
	rs=1;
	lcdrw=1;
	lcde=1;
	P0=0xff;
	delay(5);
	rclock2=P0;
	delay(5);
	rclock=(rclock1-0x30)*10+(rclock2-0x30);
	return rclock;
}
void write_date(uchar date)
{
	lcdrw=0;
	rs=1;
	lcde=0;
	P0=date;
	delay(5);
	lcde=1;
	delay(5);
	lcde=0;
}
void init()
{
	uchar i;
	EA=1;
	EX0=1;
	IT0=1;
	write_com(0x38);
	write_com(0x08);
	write_com(0x01);
	write_com(0x06);
	write_com(0x0c);
	write_com(0x80);
	for(i=0;i<9;i++)
	{
		write_date(nyr[i]);
	}
		write_com(0x80+0x40);
	for(i=0;i<15;i++)
	{
		write_date(sfm[i]);
	}	
}
uchar read_ds(uchar add)
{
	uchar dsdate;
	dsas=1;
	dsds=1;
	dsrw=1;
	dscs=0;
	P2=add;
	dsas=0;
	dsds=0;
	P2=0xff;
	dsdate=P2;
	dsds=1;
	dsas=1;
	dscs=1;
	return dsdate;
}
void wc_lcd()
{
	uchar temp,si,ge,i,j;
	for(i=0;i<7;i++)
	{
		temp=read_ds(addc[i]);
		si=temp/10;
		ge=temp%10;
		write_com(addnyr[i]);
		if(i!=3)
		{
			write_date(0x30+si);
			write_date(0x30+ge);
		}
		else
		{
			for(j=0;j<3;j++)
			{
			write_date(week[ge*3+j]);
			}
		}
	}
	
}	
void setclock()
{
	uchar r1,r2;
	write_com(0x0d);
	switch(setupint)
	{
	case 1:
		write_com(addnyr[setupint-1]+1);
		readc=read_date(0x86);
		r1=readc/10;
		r2=readc%10;
		write_com(0x80+0x40);
		write_date(0x30+r1);
		write_date(0x30+r2);
//		setupint==0;
		break;
	case 2:
		write_com(addnyr[setupint-1]+1);
		break;
	case 3:
		write_com(addnyr[setupint-1]+1);
		break;
	case 5:
		write_com(addnyr[setupint-1]+1);
		break;
	case 6:
		write_com(addnyr[setupint-1]+1);
		break;
	case 7:
		write_com(addnyr[setupint-1]+1);
		break;
	}
	if(cancle==0){setupint=0;}
	delay(40);
	EX0=1;
}
void ds18b20_delay(uchar x)
{
	while(x--);
}
void ds18b20_rst()
{
	dat=1;
	ds18b20_delay(4);
	dat=0;
	ds18b20_delay(100);
	dat=1;
	//while(dat);
	//dat=1;
	ds18b20_delay(40);
}
void ds18b20_wr(uchar dscom)
{
	uchar i;
	for(i=0;i>8;i++)
	{
		dat=0;
		dat=dscom&0x01;
		ds18b20_delay(10);
		dat=1;
		dscom>>=1;
	}
}
uchar ds18b20_rd()
{
	uchar i,rdat;
	for(i=0;i>8;i++)
	{
		dat=0;
		rdat>>=1;
		dat=1;
		if(dat)
		rdat|=0x80;
		ds18b20_delay(10);
	}
	return (rdat);
}
uint ds18b20_rc()
{
	uchar a,b;
	ds18b20_rst();
	ds18b20_wr(0xcc);
	ds18b20_wr(0x44);
	ds18b20_rst();
	ds18b20_wr(0xcc);
	ds18b20_wr(0xbe);
	a=ds18b20_rd();
	b=ds18b20_rd();
	dstemp=b;
	dstemp<<=8;
	dstemp=dstemp|a;
	if(dstemp<0x0fff)
	dszf=0;
	else
	{
		dstemp=~dstemp+1;
		dszf=1;
	}
	dstemp=dstemp*(0.625);
	return(dstemp);
}
void display_ds()
{
	uchar i;
	wd[0]=dstemp/1000;
	wd[1]=dstemp%1000/100;
	wd[2]=dstemp%100/10;
	wd[3]=dstemp%10;
	write_com(0xc9);
	for(i=0;i<5;i++)
	{
		write_date(wd[i]+0x30);
	}
}
void main()
{
	init();
	while(1)
	{
		if(setupint==0)
		{
		wc_lcd();
		ds18b20_rc();
		display_ds();
		}
		else
		{
			setclock();
		}
	}
}
void setup() interrupt 0
{
	EX0=0;
	setupint++;
	if(setupint>7)
	setupint=1;
	if(setupint==4)
	setupint++;
}