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//显示程序(一共两个文件第一个LCD显示,第二个读DS18B20数据)
#include <reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define NOP _nop_()
sbit RS=P2^6; sbit E=P2^7; sbit RW=P2^5; sbit BEEP = P1^5;
sbit P3_2=P3^2; sbit P3_3=P3^3;
void delay (void); void init(void); void wc51r(uchar i); void wc51ddr (uchar i);
void fbusy( ); void week_show(); void date_show(); void Lcd_show();
void nwc51r (uchar i); void time_show(); void Tem_show();
void delays(); void beep(); void DS18B20_show();
int de;bit bbs;
uchar date=26,week,moth=6,second,mintue,hour,j,i=0,k=0;
uchar code Cutime[]={"Current time is:"};
uchar code Cudate[]={"Current date is:"};
uchar code Cuweek[]={"Current week is:"};
uchar code Tem[]={"Temperature:"};
uchar code Etem[]={"Error:"};
extern bit flag;
extern unsigned char temp_dis[6];
extern void Disp_temperatuer();extern void read_bytes (void);
uchar weekd[7][3]={{'S','u','n'},{'M','o','n'},{'T','u','e'},{'W','e','d'},{'T','h','u'},{'F','r','i'},{'S','t','a'}};
uchar dated[10]={'2','0','1','0','/','0','6','/','2','5'};
void main( )
{
SP=0x66;
init ();
DS18B20_show();
week_show();
date_show();
while(1)
{
while(k<4) time_show();
while(k==4) week_show();
while(k==5) date_show();
}
}
void DS18B20_show()
{
EA=0;
read_bytes();
Disp_temperatuer();
while(!bbs){wc51r(0xca);break;}
while(bbs){wc51r(0xd1);break;}
delay();
while(flag)
{
wc51ddr('*'); delay();
wc51ddr(temp_dis[2]); delay();
wc51ddr(temp_dis[1]); delay();
wc51ddr('.'); delay();
wc51ddr(temp_dis[0]); delay();
wc51ddr('C'); delay();
break;
}
while(!flag)
{
uchar ei;
delay();
for (ei=0;ei<5;ei++) { wc51ddr(Etem[ei]);delay();}
break;
}
delay(); EA=1;
while(20<=temp_dis[5]<=25)
{
P1=0xff;break;
}
}
void beep()
{
unsigned char bep;
for (bep=0;bep<45;bep++)
{
BEEP=!BEEP;
delay( );
}
BEEP=1;
}
void Lcd_show()
{
wc51r (0x01); delay( ); delay();delay(); delay();delay();
week_show(); date_show(); DS18B20_show(); // time_show();
}
modification2() interrupt 2
{
beep();
for(de=0;de<200;de++) { delay( ); } //延时防抖?
while(k==0) //温度显示
{
Tem_show();
delays();
Lcd_show();
beep();
break;
}
while(k==1){second++;
if(second==60){second=0;}break;}
while(k==2){mintue++;
if(mintue==60){mintue=0;}break;}
while(k==3){hour++;
if(hour==24){hour=0;} break;}
while(k==4){week++;
if(week==7){week=0;} break;}
while(k==5){date++;
if(date==31){date=0;} break;}
}
void delays()
{
uchar Del_0,Del_1,Del_2;
for(Del_0=0;Del_0<50;Del_0++)
for(Del_1=0;Del_1<100;Del_1++)
for(Del_2=0;Del_2<0xff;Del_2++);
}
void Tem_show() //温度显示
{
wc51r (0x01); delay( ); delay();delay(); delay();delay();
wc51r (0x07); delay( );
wc51r(0x8e);
delay();
for (i=0;i<12;i++)
{
wc51ddr(Tem[i]);
for(de=0;de<250;de++) { delay( ); }
}
wc51r (0x06); delay( ); wc51r (0x06); delay( );
bbs=1;DS18B20_show();bbs=0;
}
void date_show() //日期显示
{
EA=0;
while(k==0){wc51r(0x86);break;}
while(k==5){wc51r(0xc3);break;}
delay();
dated[5]=moth/10+0x30;
dated[6]=moth%10+0x30;
dated[8]=date/10+0x30;
dated[9]=date%10+0x30;
for (i=0;i<10;i++)
{
wc51ddr(dated[i]); delay();
}
while(k==5){wc51ddr('_'); delay(); break;}
EA=1;
delay();delay();delay();delay();
}
void week_show() //星期显示
{
EA=0;
while(k==0){wc51r(0x80);break;}
while(k==4){wc51r(0xc7);break;}
for(i=0;i<3;i++)
{
wc51ddr (weekd[week][i]); delay();
}
EA=1;
delay();delay();delay();delay();
}
void time_show() //时间显示
{
EA=0;
while(k!=0){wc51r (0xc4);break;}
while(k==0){wc51r (0xc0);break;}
delay();
wc51ddr (hour/10+0x30);
wc51ddr (hour%10+0x30);
while(k!=3){ wc51ddr (':'); break;}
while(k==3){ wc51ddr ('_'); break;}
wc51ddr (mintue/10+0x30);
wc51ddr (mintue%10+0x30);
while(k==2){ wc51ddr ('_'); break;}
while(k!=2){ wc51ddr (':'); break;}
wc51ddr (second/10+0x30);
wc51ddr (second%10+0x30);
while(k==1){ wc51ddr ('_'); break;}
while(k!=2){ wc51ddr (' '); break;}
EA=1;
delay();delay();delay();delay();delay();delay();
}
void init ( )
{
TMOD=0X01;
TH0=0X3c;
TL0=0Xb0;
EA=1; ET0=1; TR0=1; EX1=1; EX0=1;
IT0=1; IT1=1;
PX1=1;
for(de=0;de<1000;de++) { delay( ); }
nwc51r (0x38); delay( );nwc51r (0x38); delay( );nwc51r (0x38); delay( );
nwc51r (0x0c); delay( ); nwc51r (0x06); delay( ); nwc51r (0x01); delay( );
}
void fbusy( )
{
RS=0;RW=1;
NOP;NOP;NOP;NOP;
E=1;
delay();
while(P0&0x80);
E=0;
delay();
}
void nwc51r (uchar i)
{
E=0; RS=0; RW=0;
P0=i;
NOP;NOP;
E=1;
NOP;NOP;NOP;NOP;
E=0;
delay();
}
void wc51r (uchar i)
{
fbusy ();
E=0; RS=0; RW=0;
P0=i;
NOP;NOP;
E=1;
NOP;NOP;NOP;NOP;
E=0;
delay();
}
void wc51ddr (uchar i)
{
fbusy ();
E=0; RS=1; RW=0;
P0=i;
NOP;NOP;
E=1;
NOP;NOP;NOP;NOP;
E=0;
delay();
}
void delay( )
{
uchar y;
for (y=0;y<0xff;y++);
}
modification1() interrupt 0
{
beep();
for(de=0;de<200;de++) delay( );
k++;
nwc51r (0x01); delay( );
wc51r(0x80);
delay();
while(k<4)
{
for (i=0;i<16;i++) { wc51ddr( Cutime[i]); delay(); }
break;
}
while(k==4)
{
for (i=0;i<16;i++) { wc51ddr( Cuweek[i]); delay(); }
break;
}
while(k==5)
{
for (i=0;i<16;i++) { wc51ddr( Cudate[i]); delay(); }
break;
}
if(k==6)
{
k=0; Lcd_show();
}
}
time() interrupt 1
{
TH0=0x3c; TL0=0xb0;
j++;
while(j==20){j=0;second++;while(k==0){DS18B20_show(); break;}}
while(second==60){second=0;mintue++;}
while(mintue==60){mintue=0;hour++;}
while(hour==24)
{
hour=0;date++;
while((date%7)==0){ week++;break; }
}
while(week==7){week=0;}
while(date==30){date=0;moth++;}
while(moth==12)moth=0;
}
第二个
#include <reg52.H>
#include <intrins.h>
sbit D18B20=P3^7; bit flag;
unsigned char Temperatured;
unsigned char temp_data[2];
unsigned char temp_dis[6]={0xFF,0xFF,0xFF,0xFF,0xFF};
unsigned char temp_tab[16]={0x00,0x01,0x01,0x02,0x03,0x03,0x04,0x04,0x05,0x06,0x07,0x08,0x09,0x09};
void Disp_temperatuer();void read_bytes (void); void TempDelay (unsigned int us);
void Init18b20 (void);void WriteByte (unsigned char idata wr); unsigned char ReadByte (void);
void Disp_temperatuer()
{
temp_dis[4]= temp_data[0]&0x0f;
temp_dis[0]= temp_tab[temp_dis[4]]+0x30;
temp_dis[3]= (((temp_data[0]&0xf0)>>4)|((temp_data[1]&0x0f)<<4));
temp_dis[5]= (temp_dis[3]%100);
temp_dis[2]= (temp_dis[3]%100)/10+0x30;
temp_dis[1]= temp_dis[3]%10+0x30;
}
void read_bytes (void)
{
Init18b20();
WriteByte(0xcc); WriteByte(0x44);
TempDelay(5000);
Init18b20();
WriteByte(0xcc); WriteByte(0xbe);
temp_data[0] = ReadByte(); TempDelay(2);
temp_data[1] = ReadByte(); TempDelay(2);
}
unsigned char ReadByte (void) //读取单字节
{
unsigned char idata Ti,u=0;
for(Ti=0;Ti<8;Ti++)
{
D18B20 = 0;
u >>= 1;
D18B20 = 1;
TempDelay(3);
if(D18B20==1)
u |= 0x80;
TempDelay (1);
_nop_();
D18B20 = 1;
}
return(u);
}
void WriteByte (unsigned char idata wr) //单字节写入
{
unsigned char idata i;
for (i=0;i<8;i++)
{
D18B20 = 0;
_nop_();
D18B20=wr&0x01;
TempDelay(3); //delay 45 uS //5
_nop_();
_nop_();
D18B20=1;
wr >>= 1;
_nop_();
}
}
void Init18b20 (void)
{
D18B20=1;
_nop_();
D18B20=0;
TempDelay(100); //delay 530 uS//80
_nop_();
D18B20=1;
TempDelay(13); //delay 100 uS//14
_nop_();
_nop_();
_nop_();
if(D18B20==0)
flag = 1; //detect 1820 success!
else
flag = 0; //detect 1820 fail!
TempDelay(10); //20
_nop_();
_nop_();
D18B20 = 1;
}
void TempDelay (unsigned int us)
{
while(us--);
}
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