/* 根据部分网友的代码改编
^_^ 直接看程序吧
注:在下面的程序中调时间时不出现光标的闪烁,可是在只有时间显示时(把所
有与温度有关部分屏蔽掉,本来就是两个程序合并来的)光标却能正常闪烁;
希望有人指出问题在那;^_^ */
#include<reg52.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int
sbit DS18b20_DQ = P1^6 ;
bit flag;
unsigned char *p ;
unsigned char code CrcTable [256]={
0, 94, 188, 226, 97, 63, 221, 131, 194, 156, 126, 32, 163, 253, 31, 65,
157, 195, 33, 127, 252, 162, 64, 30, 95, 1, 227, 189, 62, 96, 130, 220,
35, 125, 159, 193, 66, 28, 254, 160, 225, 191, 93, 3, 128, 222, 60, 98,
190, 224, 2, 92, 223, 129, 99, 61, 124, 34, 192, 158, 29, 67, 161, 255,
70, 24, 250, 164, 39, 121, 155, 197, 132, 218, 56, 102, 229, 187, 89, 7,
219, 133, 103, 57, 186, 228, 6, 88, 25, 71, 165, 251, 120, 38, 196, 154,
101, 59, 217, 135, 4, 90, 184, 230, 167, 249, 27, 69, 198, 152, 122, 36,
248, 166, 68, 26, 153, 199, 37, 123, 58, 100, 134, 216, 91, 5, 231, 185,
140, 210, 48, 110, 237, 179, 81, 15, 78, 16, 242, 172, 47, 113, 147, 205,
17, 79, 173, 243, 112, 46, 204, 146, 211, 141, 111, 49, 178, 236, 14, 80,
175, 241, 19, 77, 206, 144, 114, 44, 109, 51, 209, 143, 12, 82, 176, 238,
50, 108, 142, 208, 83, 13, 239, 177, 240, 174, 76, 18, 145, 207, 45, 115,
202, 148, 118, 40, 171, 245, 23, 73, 8, 86, 180, 234, 105, 55, 213, 139,
87, 9, 235, 181, 54, 104, 138, 212, 149, 203, 41, 119, 244, 170, 72, 22,
233, 183, 85, 11, 136, 214, 52, 106, 43, 117, 151, 201, 74, 20, 246, 168,
116, 42, 200, 150, 21, 75, 169, 247, 182, 232, 10, 84, 215, 137, 107, 53};
unsigned char temp_buff[9]; //存储读取的字节,read scratchpad为9字节,read rom ID为8字节
unsigned char crc_data;
unsigned int Temperature;
unsigned char id_buff[8];//端口设置
sbit dula="P2"^6;
sbit wela="P2"^7;
sbit lcden="P1"^2;
sbit lcdrw="P1"^1;
sbit lcdrs="P1"^0;
sbit s1=P2^0;
sbit s2=P2^1;
sbit s3=P2^2;
sbit rd="P2"^4;
sbit DQ="P2"^5;
uchar code table1[]="2008-3-29 06" ;
uchar code table2[]="17:58:05" ;
uchar shi,fen,miao,t,nian,yue,ri,xq,s1num;
void delay(uchar z) //延时
{
uchar x,y;
for(x=20;x>0;x--)
for(y=z;y>0;y--);
}
void write_com(uchar com)
{
lcdrs="0";
lcden="0";
P0=com;
delay(5);
lcden="1";
delay(5);
lcden="0";
}
void write_date(uchar date) //写数据
{
lcdrs="1";
lcden="0";
P0=date;
delay(5);
lcden="1";
delay(5);
lcden="0";
}
void Init_Com(void) //初始话
{
TMOD = 0x20;
PCON = 0x00;
SCON = 0x50;
TH1 = 0xFd;
TL1 = 0xFd;
TR1 = 1;
}
void dsreset(void)
{
uint i;
DQ="0";
i="103";
while(i>0)i--;
DQ="1";
i="4";
while(i>0)i--;
}
void delay10ms()
{
uchar a,b;
for(a=10;a>0;a--)
for(b=60;b>0;b--);
}
void display(uint temp) //显示
{
uchar A1,A2,A2t,A3,ser;
ser="temp/10";
SBUF="ser";
A1=temp/100;
A2t=temp%100;
A2=A2t/10;
A3=A2t%10;
write_com(0x80+0x40+13);
write_date(0x30+A1);
write_com(0x80+0x40+14);
write_date(0x30+A2);
write_com(0x80+0x40+15);
write_date(0x30+A3);
}
void init() //初始化
{
uchar num;
dula="0";
wela="0";
lcden="0";
nian="07";
yue="03";
ri="29";
shi="17";
fen="58";
miao="05";
xq="06";
write_com(0x38);
write_com(0x01);
write_com(0x06);
write_com(0x0f);
write_com(0x80+1);
for(num=0;num<14;num++)
{
write_date(table1[num]);
delay(1);
}
write_com(0x80+0x40+4);
for(num=0;num<8;num++)
{
write_date(table2[num]);
delay(1);
}
RCAP2H=0x0f;
RCAP2L=0xff;
TR2=1;
ET2=1;
EA="1";
}
void write_sfm(uchar add,uchar date) //写时分秒
{
uchar sh,ge;
sh="date/10";
ge="date"%10;
write_com(0x80+0x40+4+add);
write_date(0x30+sh);
write_date(0x30+ge);
}
void write_nyr(uchar add,uchar date) //写年月日
{
uchar sh,ge;
sh="date/10";
ge="date"%10;
write_com(0x80+1+add);
write_date(0x30+sh);
write_date(0x30+ge);
}
void keyscan() //扫描键盘
{
rd="0";
if(s1==0)
{
delay(5);
if(s1==0);
{
s1num++;
while(!s1);
if(s1num==1)
{
TR2=0;
write_com(0x80+0x40+4+7);
write_com(0x0f);
}
if(s1num==2)
{
write_com(0x80+0x40+4+4);
}
if(s1num==3)
{
write_com(0x80+0x40+4+1);
}
if(s1num==4)
{
write_com(0x80+1+13);
}
if(s1num==5)
{
write_com(0x80+1+9);
}
if(s1num==6)
{
write_com(0x80+1+6);
}
if(s1num==7)
{
write_com(0x80+1+3);
}
if(s1num==8)
{
s1num=0;
TR2=1;
write_com(0x0c);
}
}
}
if(s1num!=0)
{
if(s2==0)
{
delay(5);
if(s2==0)
{
if(s1num==1)
{
while(!s2);
miao++;
if(miao==60)
miao="0";
write_com(0x80+0x40+4+6);
write_sfm(6,miao);
write_com(0x80+0x40+4+7);
}
if(s1num==2)
{
while(!s2);
fen++;
if(fen==60)
fen="0";
write_com(0x80+0x40+4+3);
write_sfm(3,fen);
write_com(0x80+0x40+4+4);
}
if(s1num==3)
{
while(!s2);
shi++;
if(shi==24)
shi="0";
write_com(0x80+0x40+4+0);
write_sfm(0,shi);
write_com(0x80+0x40+4+1);
}
if(s1num==4)
{
while(!s2);
xq++;
if(xq==8)
xq="1";
write_com(0x80+1+0x0c);
write_nyr(12,xq);
write_com(0x80+1+0x0d);
}
if(s1num==5)
{
while(!s2);
ri++;
if(ri==32)
ri="1";
write_com(0x80+1+8);
write_nyr(8,ri);
write_com(0x80+1+9);
}
if(s1num==6)
{
while(!s2);
yue++;
if(yue==13)
yue="1";
write_com(0x80+1+5);
write_nyr(5,yue);
write_com(0x80+1+6);
}
if(s1num==7)
{
while(!s2);
nian++;
write_com(0x80+1+2);
write_nyr(2,nian);
write_com(0x80+1+3);
}
}
}
if(s3==0)
{
delay(5);
if(s3==0)
{
if(s1num==1)
{
while(!s3);
miao--;
if(miao==-1)
miao="59";
write_com(0x80+0x40+4+6);
write_sfm(6,miao);
write_com(0x80+0x40+4+7);
}
if(s1num==2)
{
while(!s3);
fen--;
if(fen==-1)
fen="59";
write_com(0x80+0x40+4+3);
write_sfm(3,fen);
write_com(0x80+0x40+4+4);
}
if(s1num==3)
{
while(!s3);
shi--;
if(shi==-1)
shi="23";
write_com(0x80+0x40+4+0);
write_sfm(0,shi);
write_com(0x80+0x40+4+1);
}
if(s1num==4)
{
while(!s3);
xq--;
if(xq==0)
xq="7";
write_com(0x80+1+0x0c);
write_nyr(12,xq);
write_com(0x80+1+0x0d);
}
if(s1num==5)
{
while(!s3);
ri--;
if(ri==0)
ri="31";
write_com(0x80+1+8);
write_nyr(8,ri);
write_com(0x80+1+9);
}
if(s1num==6)
{
while(!s3);
yue--;
if(yue==0)
yue="12";
write_com(0x80+1+5);
write_nyr(5,yue);
write_com(0x80+1+6);
}
if(s1num==7)
{
while(!s3);
nian--;
write_com(0x80+1+2);
write_nyr(2,nian);
write_com(0x80+1+3);
}
}
}
}
}
//****************************************************/
void TempDelay (uint us)
{
while(us--);
}
//******************************************************/
void Init18b20 (void)//温度传感器初始化
{
DS18b20_DQ = 1;
_nop_();
DS18b20_DQ = 0;
TempDelay(86); //delay 530 uS//80
_nop_();
DS18b20_DQ = 1;
TempDelay(14); //delay 100 uS//14
_nop_();
_nop_();
_nop_();
if(DS18b20_DQ==0)
flag = 1; //detect 1820 success!
else
flag = 0; //detect 1820 fail!
TempDelay(20); //20
_nop_();
_nop_();
DS18b20_DQ = 1;
}
/******************** *********
*Function:向18B20写入一个字节*/
void WriteByte (uchar wr) //单字节写入
{
uchar i;
for (i=0;i<8;i++)
{
DS18b20_DQ = 0 ;
_nop_();
DS18b20_DQ = wr & 0x01;
TempDelay(5); //delay 45 uS //5
_nop_();
_nop_();
DS18b20_DQ = 1;
wr >>= 1;
}
}
/************************************************************
*Function:读18B20的一个字节
*************************************************************/
uchar ReadByte (void) //读取单字节
{
uchar i,u=0;
for(i=0;i<8;i++)
{
DS18b20_DQ = 0 ;
u >>= 1;
DS18b20_DQ = 1;
if(DS18b20_DQ ==1 )
u |= 0x80;
TempDelay (4);
_nop_();
}
return(u);
}
/************************************************************
*Function:读18B20
*************************************************************/
void read_bytes (uchar j)
{
uchar i;
for(i=0;i<j;i++)
{
*p = ReadByte();
p++;
}
}
/*Function:CRC校验********************************/
uchar CRC (uchar j)
{
uchar i,crc_data=0;
for(i=0;i<j;i++) //查表校验
crc_data = CrcTable[crc_data^temp_buff];
return (crc_data);
}
/************************************************************
*Function:读取温度
*************************************************************/
void GemTemp (void)
{
read_bytes (9);
if (CRC(9)==0) //校验正确
{
Temperature = temp_buff[1]*0x100 + temp_buff[0];
// Temperature *= 0.625;
Temperature /= 16;
TempDelay(1);
}
}
/************************************************************
*Function:内部配置
*************************************************************/
void Config18b20 (void) //重新配置报警限定值和分辨率
{
Init18b20();
WriteByte(0xcc); //skip rom
WriteByte(0x4e); //write scratchpad
WriteByte(0x19); //上限
WriteByte(0x1a); //下限
WriteByte(0x7f); //set 11 bit (0.125)
Init18b20();
WriteByte(0xcc); //skip rom
WriteByte(0x48); //保存设定值
Init18b20();
WriteByte(0xcc); //skip rom
WriteByte(0xb8); //回调设定值
}
/************************************************************
*Function:读18B20ID
*parameter:
*Return:
*Modify:
*************************************************************/
void ReadID (void)//读取器件 id
{
Init18b20();
WriteByte(0x33); //read rom
read_bytes(8);
}
/************************************************************
*Function:18B20ID全处理*/
void TemperatuerResult(void)
{
p = id_buff;
ReadID();
Config18b20();
Init18b20 ();
WriteByte(0xcc); //skip rom
WriteByte(0x44); //Temperature convert
Init18b20 ();
WriteByte(0xcc); //skip rom
WriteByte(0xbe);
}
void Get_Temperature()
{
p = temp_buff;
GemTemp();
}
void main()
{
uchar a;
lcdrw="0";
Init_Com();
init();
while(1)
{
TemperatuerResult();
Get_Temperature();
write_com(0x80+0x40+13);
write_date(0x30+Temperature/10);
write_com(0x80+0x40+14);
write_date(0x30+Temperature%10);
// write_com(0x80+0x40+15);
// write_date(0x30+A3);
keyscan();
if(t==15)
{
t="0";
miao++;
if(miao==60)
{
fen++;
miao="0";
if(fen==60)
{
shi++;
fen="0";
if(shi==24)
{
shi="0";
ri++;
if(ri==32)
{
ri="1";
yue++;
if(yue==13)
{
yue="1";
nian++;
write_nyr(2,nian);
}
write_nyr(5,yue);
}
xq++;
if(xq==8)
{
xq="1";
}
write_nyr(12,xq);
write_nyr(8,ri);
}
write_sfm(0,shi);
}
write_sfm(3,fen);
}
write_sfm(6,miao);
}
}
}
void timer2() interrupt 5 //中断
{
TF2=0;
t++;
用户1364249 2008-4-3 13:02