clock11-29_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


*/
#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;
uchar code nyr[]=" 20  -  -";
uchar code sfm[]="      :  :";
uchar code addnyr[]={0x83,0x86,0x89,0x8c,0xc4,0xc7,0xca};
uchar code addc[]={0x09,0x08,0x07,0x06,0x04,0x02,0x00};
uchar code week[]="SunMonTueWedThuFriSta";
uchar setupint,readc;
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<10;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 main()
{
	init();
	while(1)
	{
		if(setupint==0)
		wc_lcd();
		else
		{
			setclock();
		}
	}
}
void setup() interrupt 0
{
	EX0=0;
	setupint++;
	if(setupint>7)
	setupint=1;
	if(setupint==4)
	setupint++;
}