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想知道图中几个按钮的功能
#include <REGX52.H>
#define uchar unsigned char
sbit DQ=P2^0; //Êý¾Ý´«ÊäÏß½Óµ¥Æ¬»úµÄÏàÓ¦µÄÒý½Å
unsigned char tempL=0; //ÁÙʱ±äÁ¿µÍ루ÎÞ·ûºÅ×Ö·û±äÁ¿£©
unsigned char tempH=0; //ÁÙʱ±äÁ¿¸ßλ
unsigned int tempa; //ζÈÖµ£¨ÕûÐͱäÁ¿£©
uchar display_data[4]={0};
void DS18_delay(int useconds)//ÑÓʱº¯Êý
{
int s;
for (s=0; s<useconds;s++);
}
unsigned char Init_DS18B20(void)
{
unsigned char x=0;
DQ=0; //·¢Ë͸´Î»Âö³å
DS18_delay(29); //ÑÓʱ£¨>480ms)
DQ=1; //À­¸ßÊý¾ÝÏß
DS18_delay(3); //µÈ´ý£¨15~60ms) µÈ´ý´æÔÚÂö³å
x=DQ; //»ñµÃ´æÔÚÐźÅ(ÓÃÓÚÅжÏÊÇ·ñÓÐÆ÷¼þ)
DS18_delay(25); // µÈ´ýʱ¼ä϶½áÊø
return(x); //·µ»Ø´æÔÚÐźţ¬0 = Æ÷¼þ´æÔÚ, 1 = ÎÞÆ÷¼þ
}
ReadOneChar(void)//¶ÁÒ»¸ö×Ö½Ú
{
unsigned char i=0;
unsigned char dat=0;
for (i=8;i>0;i--)
{
DQ=1;
DS18_delay(1);
DQ=0;
dat>>=1;//¸´ºÏ¸³ÖµÔËË㣬µÈЧdat=dat>>1(dat=datÓÒÒÆһλºóµÄÖµ)
DQ=1;
if(DQ)
dat|=0x80;
DS18_delay(4);
}
return(dat);
}
WriteOneChar(unsigned char dat)//Óвκ¯Êý£¬¹¦ÄÜÊÇ"д"£¬¶øдµÄÄÚÈݾÍÊÇÀ¨ºÅÄڵIJÎÊý
{
unsigned char i=0;
for(i=8;i>0;i--)
{
DQ=0;
DQ=dat&0x01;
DS18_delay(5);
DQ=1;
dat>>=1;//¸´ºÏ¸³ÖµÔËË㣬µÈЧdat=dat>>1(dat=datÓÒÒÆһλºóµÄÖµ)
}
DS18_delay(4);
}
unsigned int ReadTemperature(void)//·µ»Ø¶ÁÈ¡µÄζÈ.
{
Init_DS18B20(); //³õʼ»¯£¬µ÷Óóõʼ»¯º¯Êý
WriteOneChar(0xcc); //Ìø¹ý¶ÁÐòÁкŵIJÙ×÷£¬µ÷ÓÃдº¯Êý£¬Ð´0xccÖ¸ÁîÂ루Ìø¹ý¶ÁÐòÁкţ©
WriteOneChar(0x44); //Æô¶¯Î¶Èת»»£¬µ÷ÓÃдº¯Êý£¬Ð´0x44Ö¸ÁîÂ루Æô¶¯Î¶Èת»»£©
DS18_delay(125); //ת»»ÐèÒªÒ»µãʱ¼ä£¬ÑÓʱ
Init_DS18B20(); //³õʼ»¯£¬µ÷Óóõʼ»¯º¯Êý
WriteOneChar(0xcc); //Ìø¹ý¶ÁÐòÁкŵIJÙ×÷£¬µ÷ÓÃдº¯Êý£¬Ð´0xccÖ¸ÁîÂ루Ìø¹ý¶ÁÐòÁкÅ?
WriteOneChar(0xbe); //µ÷ÓÃдº¯Êý£¬Ð´0xbeÖ¸ÁîÂ룬¶ÁζȼĴæÆ÷£¨Í·Á½¸öÖµ·Ö±ðΪζȵĵÍλºÍ¸ß룩
tempL=ReadOneChar(); //¶Á³öζȵĵÍλLSB
tempH=ReadOneChar(); //¶Á³öζȵĸßλMSB
tempa=((tempH*256)+tempL)*6.25; //ζÈת»»,À©´ó100·µ»Ø
//DS18_delay(10);
//tempa=tempL+tempH;
return(tempa);//ÔËËã½á¹û·µ»Øµ½º¯Êý
}
void display()//ÏÔʾº¯Êý
{
unsigned char i,j,k=0x80;
unsigned char code dis[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x39};
for(i=0;i<4;i++)
{
P2=0x0f;
if(i==1)
P0=dis[display_data[i]]+0x80;
else
P0=dis[display_data[i]];
P2=k;
k=k>>1;
for(j=250;j>0;j--);
}
P2=0x0f;
}
void main()
{
unsigned int temp;
uchar i;
while(1)
{
temp=ReadTemperature();
display_data[0]=temp/1000;
display_data[1]=(temp/100)%10;
display_data[2]=(temp/10)%10;
display_data[3]=temp%10;
for(i=0;i<250;i++) display();
}
} */
# include <reg51.h>
#define uint unsigned int
#define uchar unsigned char //ºê¶¨Òå
sbit p34=P2^4;
sbit p35=P2^5;
sbit p36=P2^6;
sbit dp=P0^7;
sbit p37=P2^7;
sbit DQ=P2^2; //¶¨ÒåDS18B20×ÜÏßI/O
sbit SET=P3^1; //¶¨ÒåÑ¡Ôñ±¨µ÷Õû¾¯Î¶ÈÉÏÏÞºÍÏÂÏÞ£¨1ΪÉÏÏÞ£¬0ΪÏÂÏÞ£© /****P3.2ºÍP3.3Ϊµ÷Õûζȱ¨¾¯Ôö¼Ó¼üºÍ¼õÉÙ¼ü******/
sbit LING=P2^0; //¶¨ÒåÏìÁå
signed char m; //ζÈֵȫ¾Ö±äÁ¿
bit sign=0; //ÍⲿÖжÏ״̬±êÖ¾
signed char shangxian=38; //ÉÏÏÞ±¨¾¯Î¶ȣ¬Ä¬ÈÏֵΪ38
signed char xiaxian=6; //ÏÂÏÞ±¨¾¯Î¶ȣ¬Ä¬ÈÏֵΪ5
uchar code LEDData[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0xbf}; /*****ÑÓʱ×Ó³ÌÐò*****/
void Delay(uint i)
{
while( i-- );
}
void Init_DS18B20(void)
{
unsigned char x=0;
DQ=1; Delay(8); //ÉÔ×öÑÓʱ
DQ=0; //µ¥Æ¬»ú½«DQÀ­µÍ
Delay(80); //¾«È·ÑÓʱ£¬´óÓÚ480us
DQ=1; //À­¸ß×ÜÏß
Delay(14);
x=DQ; //ÉÔ×öÑÓʱºó£¬Èç¹ûx=0Ôò³õʼ»¯³É¹¦£¬x=1Ôò³õʼ»¯Ê§°Ü
Delay(20);
}
/*****¶ÁÒ»¸ö×Ö½Ú*****/
unsigned char ReadOneChar(void)
{
unsigned char i=0;
unsigned char dat=0;
for (i=8;i>0;i--)
{
DQ=0; // ¸øÂö³åÐźÅ
dat>>=1;
DQ=1; // ¸øÂö³åÐźÅ
if(DQ) dat|=0x80;
Delay(4);
}
return(dat); }
/*****дһ¸ö×Ö½Ú*****/
void WriteOneChar(unsigned char dat)
{ unsigned char i=0;
for (i=8; i>0; i--)
{
DQ=0;
DQ=dat&0x01;
Delay(5);
DQ=1; dat>>=1;
}
}
void Tmpchange(void) //·¢ËÍζÈת»»ÃüÁî
{
Init_DS18B20();
WriteOneChar(0xCC); //Ìø¹ý¶ÁÐòºÅÁкŵIJÙ×÷
WriteOneChar(0x44); //Æô¶¯Î¶Èת
}
unsigned int ReadTemperature(void)
{
unsigned char a=0;
unsigned char b=0;
unsigned int t=0;
float tt=0;
Tmpchange();
Init_DS18B20();
WriteOneChar(0xCC); //Ìø¹ý¶ÁÐòºÅÁкŵIJÙ×÷
WriteOneChar(0xBE); //¶ÁȡζȼĴæÆ÷
a=ReadOneChar(); //¶ÁµÍ8λ
b=ReadOneChar(); //¶Á¸ß8λ
t=b; t<<=8; t=t|a; tt=t*0.0625; t= tt*100+0.5; //·Å´ó10±¶Êä³ö²¢ËÄÉáÎåÈë
return(t); } /*****ÏÔʾ¿ª»ú³õʼ»¯µÈ´ý»­Ãæ*****/
Disp_init() { P0 = 0x80; //ÏÔʾ-
p34=1;p35=0;p36=0;p37=0;
Delay(200);
P0 = 0x80;
p34=0;p35=1;p36=0;p37=0;
Delay(200);
P0 = 0x80;
p34=0;p35=0;p36=1;p37=0;
Delay(200);
P0 = 0x80;
p34=0;p35=0;p36=0;p37=1;
Delay(200);
P0 = 0x80;
}
Disp_Temperature() //ÏÔʾζÈ
{ uint a,b,c,d,e;
e=ReadTemperature(); //»ñȡζÈÖµ
a=e/1000; //¼ÆËãµÃµ½Ê®Î»Êý
b=e/100-a*10; //¼ÆËãµÃµ½¸öλÊý×Ö
d=e%10; //¼ÆËãµÃµ½Ð¡ÊýµãºóÁ½Î»
c=(e%100)/10; //¼ÆËãµÃµ½Ð¡Êýµãºóһλ
m=e/100;
if(m>shangxian || m<xiaxian) LING=1; //ζȲ»ÔÚ·¶Î§ÄÚ±¨¾¯
else LING=0; p34=0;p35=0;p36=0;p37=0;
P0 =LEDData[d]; //ÏÔʾСÊýµãºóÁ½Î»
p34=1;p35=0;p36=0;p37=0;
Delay(300); p34=0;p35=0;p36=0;p37=0;
P0 =LEDData[c]; //ÏÔʾСÊýµãºóһλ
p34=0;p35=1;p36=0;p37=0;
Delay(300);
p34=0;p35=0;p36=0;p37=0;
P0 =LEDData[b]; //ÏÔʾ¸öλ
dp=0; p34=0;p35=0;p36=1;p37=0;
Delay(300); p34=0;p35=0;p36=0;p37=0;
P0 =LEDData[a]; //ÏÔʾʮλ
p34=0;p35=0;p36=0;p37=1;
Delay(300); p34=0;p35=0;p36=0;p37=0; //¹Ø±ÕÏÔʾ
}
disptiaozheng()
{
uchar f,g,j,k;
f=shangxian/10;
g=shangxian%10;
j=xiaxian/10;
k=xiaxian%10;
p34=0;p35=0;p36=0;p37=0;
P0 =0xc0; //ÏÔʾ0 p34=1;p35=0;p36=0;p37=0;
Delay(200); p34=0;p35=0;p36=0;p37=0; P0 =0xc0; //ÏÔʾ0
p34=0;p35=1;p36=0;p37=0;
Delay(200); p34=0;p35=0;p36=0;p37=0;
if(SET==1)
{
P0 =LEDData[g];
dp=0; //ÏÔʾÉÏÏÞζȸöλ
}
else
{
P0 =LEDData[k];
dp=0;
}
p34=0;p35=0;p36=1;p37=0;
Delay(200); p34=0;p35=0;p36=0;p37=0;
if(SET==1) P0 =LEDData[f]; //ÏÔʾÉÏÏÞζÈʮλ
else { if(f==0) P0=0x00; //²»ÏÔʾÏÂÏÞζÈʮλ
else P0 =LEDData[j]; //ÏÔʾÏÂÏÞζÈʮλ
} p34=0;p35=0;p36=0;p37=1;
Delay(200);
p34=0;p35=0;p36=0;p37=0; //¹Ø±ÕÏÔʾ
Delay(20);
}
void int0(void) interrupt 0 { EX0=0; //¹ØÍⲿÖжÏ0
sign=1;
if(SET==1) shangxian++; else xiaxian++;
Delay(500); EX0=1;
} /*****ÍⲿÖжÏ1·þÎñ³ÌÐò*****/
void int1(void)
interrupt 2
{
EX1=0; //¹ØÍⲿÖжÏ0
sign=1; if(SET==1) shangxian--;
else xiaxian--; Delay(500); EX1=1;
} /*****Ö÷º¯Êý*****/
void main(void)
{
uint z;
IT0=1;
IT1=1;
EX0=1;
EX1=1;
EA=1;
ReadTemperature();
LING=0;
for(z=0;z<100;z++)
{
Disp_init();
}
while(1)
{
Disp_Temperature();
if(sign==1)
{
for(z=0;z<300;z++)
disptiaozheng();
sign=0;
}
}
}
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