clock_1202_1.c

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
加入按键设置时间共五键设置向上向下完成取消加入温度DS18B20和时间限制跟写
入程序08-12-02

*/
#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 complete=P3^4;
sbit cancle=P3^5;
sbit setweek=P3^6;
sbit up=P3^0;
sbit down=P3^1;
sbit setupinit=P3^2;
sbit DQ=P3^7;//ds18b20与单片机连接口
uchar code nyr[]=" 20  -  -";
uchar code sfm[]="  :  :       . C";
uchar code addnyr[]={0x83,0x86,0x89,0x8c,0xc0,0xc3,0xc6};
uchar code addc[]={0x09,0x08,0x07,0x06,0x04,0x02,0x00};
uchar code hightime[]={99,12,31,7,23,59,59};
uchar code week[]="SunMonTueWedThuFriSta";
uchar data clockdata[6];
uchar setupint,readc;
uchar data disdata[5];
uint tvalue;//温度值
uchar tflag;//温度正负标志
void delay(uint x)
{
	uchar j;
	uint i;
	for(i=x;i>0;i--)
	for(j=110;j>0;j--);
}
/***********************液晶程序*******************************/
void Lcd_write_com(uchar command)
{
 	 lcdrw=0;
	 rs=0;
	 lcde=0;
	 P0=command;
	 delay(5);
	 lcde=1;
	 delay(5);
	 lcde=0;
}
uchar Lcd_readtime(uchar radd)
{
	uchar rclock,rclock1,rclock2;
	Lcd_write_com(radd);
	rs=1;
	lcdrw=1;
	lcde=1;
	P0=0xff;
	delay(5);
	rclock1=P0;
	delay(5);

	Lcd_write_com(radd+1);
	rs=1;
	lcdrw=1;
	lcde=1;
	P0=0xff;
	delay(5);
	rclock2=P0;
	delay(5);
	rclock=(rclock1-0x30)*10+(rclock2-0x30);
	while(setupinit==0)
	delay(10);	   // 消抖
	delay(50);
	EA=1;
	return rclock;
}
void Lcd_write_data(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;
	Lcd_write_com(0x38);
	Lcd_write_com(0x08);
	Lcd_write_com(0x01);
	Lcd_write_com(0x06);
	Lcd_write_com(0x0c);
	Lcd_write_com(0x80);
	for(i=0;i<9;i++)
	{
		Lcd_write_data(nyr[i]);
	}
		Lcd_write_com(0x80+0x40);
	for(i=0;i<16;i++)
	{
		Lcd_write_data(sfm[i]);
	}	
}
uchar ds12887_read(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 ds12887_writeLCD()
{
	uchar temp,si,ge,i,j;
	for(i=0;i<7;i++)
	{
		temp=ds12887_read(addc[i]);
		si=temp/10;
		ge=temp%10;
		Lcd_write_com(addnyr[i]);
		if(i==3)
		{
			for(j=0;j<3;j++)
			{
			Lcd_write_data(week[(ge-1)*3+j]);
			}
		}
		else
		{
		Lcd_write_data(0x30+si);
		Lcd_write_data(0x30+ge);
		}
	}
	
}	
void ds12887_keys_num(uchar cadd,uchar num)
{
	uchar r1,r2,j;
	r1=num/10;
	r2=num%10;
	if(cadd==0x8c)
	{
		Lcd_write_com(cadd);
		for(j=0;j<3;j++)
		{
			Lcd_write_data(week[(r2-1)*3+j]);

		}
		Lcd_write_com(cadd+1);
	}
	else
	{
		Lcd_write_com(cadd);
		Lcd_write_data(0x30+r1);
		Lcd_write_data(0x30+r2);
		Lcd_write_com(cadd+1);
	}
}
void ds12887_write()
{
	uchar i;
//设置禁止更新时间
		dscs=0;
		dsas=1;
		dsds=1;
		dsrw=1;
		P2=0x0b;
		dsas=0;								  
		dsrw=0;
		P2=0x06;
		dsrw=1;
		dsas=1;
		dscs=1;
	for(i=0;i<7;i++)
	{
		dsas=1;
		dsds=1;
		dsrw=1;
		dscs=0;
		P2=addc[i];
		dsas=0;								  
		dsrw=0;
		P2=clockdata[i];
		dsrw=1;
		dsas=1;
		dscs=1;
	}
//开始更新时间
		dsas=1;
		dsds=1;
		dsrw=1;
		dscs=0;
		P2=0x0b;
		dsas=0;								  
		dsrw=0;
		P2=0x06;
		dsrw=1;
		dsas=1;
		dscs=1;
	Lcd_write_com(0x0c);//关闭光标
	setupint=0;
}
void ds12887_select(uchar select)
{
	select--;
	if(select==3)
	{
		clockdata[select]=ds12887_read(6);
		Lcd_write_com(0x8d);
		while(setupinit==0)
		delay(10);	   // 消抖
		delay(50);

		EA=1;
	}
	else
	{
		clockdata[select]=Lcd_readtime(addnyr[select]);
	}
	while(setupint==(select+1))
	{
		if(up==0)
		{
			delay(50);
			clockdata[select]++;
			if(clockdata[select]>hightime[select])clockdata[select]=0;
			if((select==3)&&(clockdata[select]==0))clockdata[select]=0x01;
			ds12887_keys_num(addnyr[select],clockdata[select]);
			while(up==0);
			delay(50);
		}
		if(down==0)
		{
			delay(50);
			clockdata[select]--;
			if((select==3)&&(clockdata[select]==0))clockdata[select]=hightime[select];
			if((clockdata[select])==0xff)clockdata[select]=hightime[select];
			ds12887_keys_num(addnyr[select],clockdata[select]);
			while(down==0);
			delay(50);
		}
		if(cancle==0)setupint=0;
		if(complete==0){ds12887_write();while(complete==0);}
		}
}
void ds12887_keys()
{
	Lcd_write_com(0x0d);
	if(setupint>7)setupint=1;
	switch(setupint)
	{
	case 1:
		ds12887_select(setupint);
		break;
	case 2:
		ds12887_select(setupint);
		break;
	case 3:
		ds12887_select(setupint);
		break;
	case 4:
		ds12887_select(setupint);
		break;
	case 5:
		ds12887_select(setupint);
		break;
	case 6:
		ds12887_select(setupint);
		break;
	case 7:
		ds12887_select(setupint);
		break;
	}
}
/******************************ds1820程序***************************************/
void ds1820_delay(unsigned int i)
{
   while(i--);
}
void ds1820_reset()
{
	unsigned char x=0;
	DQ = 1;
	ds1820_delay(4);
	DQ = 0;
	ds1820_delay(100);
	DQ =1;
	ds1820_delay(40); 
} 

void ds1820_write(uchar wdata)
{
	unsigned char i=0;
	for (i=8; i>0; i--)
	{
		DQ = 0;
		DQ = wdata&0x01;
		ds1820_delay(10);
		DQ = 1;
		wdata>>=1;
	}
}

uchar ds1820_read()
{
	unsigned char i=0;
	unsigned char dat = 0;
	for (i=8;i>0;i--)
	{
		DQ = 0;
		dat>>=1;
		DQ = 1; 
		if(DQ)
		dat|=0x80;
		ds1820_delay(10);
	}
	return(dat);
}
ds1820_temp()
{
	uchar a,b;
	ds1820_reset();    
	ds1820_write(0xcc);
	ds1820_write(0x44);
	ds1820_reset();    
	ds1820_write(0xcc);
	ds1820_write(0xbe);
	a=ds1820_read();
	b=ds1820_read();
	tvalue=b;
	tvalue<<=8;
	tvalue=tvalue|a;
	if(tvalue<0x0fff)
		tflag=0;
	else
	{
		tvalue=~tvalue+1;
		tflag=1;
	}
	tvalue=tvalue*(0.625);
	return(tvalue);
	}
void ds1820_disp()
{
	uchar flagdat;
	disdata[0]=tvalue/1000+0x30;
    disdata[1]=tvalue%1000/100+0x30;
    disdata[2]=tvalue%100/10+0x30;
    disdata[3]=tvalue%10+0x30;
    if(tflag==0)
    flagdat=0x20;
    else
    flagdat=0x2d;
    if(disdata[0]==0x30)
    {
		disdata[0]=0x20;
    if(disdata[1]==0x30)
    {
		disdata[1]=0x20;
    }
   	}
	Lcd_write_com(0xcb);
	Lcd_write_data(disdata[1]);
	Lcd_write_com(0xcc);
	Lcd_write_data(disdata[2]);
	Lcd_write_com(0xce);
	Lcd_write_data(disdata[3]);
   
}
void main()
{
	init();
	while(1)
	{
		if(setupint==0)
		{
		ds12887_writeLCD();
		ds1820_temp();
		ds1820_disp();
		}
		else
		{
			ds12887_keys();
		}
	}
}
void ds12887_keys_init() interrupt 0
{
	EA=0;
	setupint++;
}