因?yàn)橐粋�(gè)朋友要過生日，而且已經(jīng)大三了，相聚的日子屈指可數(shù)，所以就想盡自己的所能給她做一件禮物。
說來也不順，知道她過生日的時(shí)候，已經(jīng)距她過生日還有僅僅4天的時(shí)間，時(shí)間很緊，也不知道送些啥，一想，自己這些天一直在做關(guān)于單片機(jī)的東西，索性利用身邊的材料，做一個(gè)東西給她，也挺有意義的。但因?yàn)槠綍r(shí)忙著復(fù)習(xí)考研，所以注定做得東西不能太復(fù)雜了，否則根本完成不了，后來也就決定做這個(gè)溫度計(jì)了。電路也不難，程序自己也見過，大概改改也就差不多了。后來感覺僅僅顯示溫度也太單調(diào)了，就加了音樂功能，一首《隱形的翅膀》也不錯(cuò)。
從周三開始，每天晚上11：00開始做，到今天，總算研制成功吧！有點(diǎn)遺憾的是，身邊沒有2-4譯碼器，所以LED驅(qū)動(dòng)的不好，就算加了兩個(gè)上拉排阻，顯示的還是挺暗！
由于本文篇幅有限部分文件請從這里下載：
http://www.torrancerestoration.com/ziliao/file/SoundPlay.rar 這個(gè)是音樂播放文件
#include <REG52.H>
#include "SoundPlay.h"
#define uchar unsigned char
#define uint unsigned int
sbit DATA = P3^7; //DS18B20接入口
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
char bai,shi,ge; //定義變量
/*延時(shí)子函數(shù)*/
void delay(uint num)
{
while(num--) ;
}
void Delay1ms(unsigned int count)
{
unsigned int i,j;
for(i=0;i<count;i++)
for(j=0;j<120;j++);
}
/*************DS18b20溫度傳感器函數(shù)*********************/
Init_DS18B20(void) //傳感器初始化
{
uchar x=0;
DATA = 1; //DQ復(fù)位
delay(10); //稍做延時(shí)
DATA = 0; //單片機(jī)將DQ拉低
delay(80); //精確延時(shí) 大于 480us //450
DATA = 1; //拉高總線
delay(20);
x=DATA; //稍做延時(shí)后 如果x=0則初始化成功 x=1則初始化失敗
delay(30);
}
//讀一個(gè)字節(jié)
ReadOneChar(void)
{
uchar i=0;
uchar dat = 0;
for (i=8;i>0;i--)
{
DATA = 0; // 給脈沖信號
dat>>=1;
DATA = 1; // 給脈沖信號
if(DATA)
dat|=0x80;
delay(8);
}
return(dat);
}
//寫一個(gè)字節(jié)
WriteOneChar(unsigned char dat)
{
uchar i=0;
for (i=8; i>0; i--)
{
DATA = 0;
DATA = dat&0x01;
delay(10);
DATA = 1;
dat>>=1;
}
delay(8);
}
//讀取溫度
int ReadTemperature(void)
{
uchar a=0;
uchar b=0;
int t=0;
float tt=0;
Init_DS18B20();
WriteOneChar(0xCC); // 跳過讀序號列號的操作
WriteOneChar(0x44); // 啟動(dòng)溫度轉(zhuǎn)換
Init_DS18B20();
WriteOneChar(0xCC); //跳過讀序號列號的操作
WriteOneChar(0xBE); //讀取溫度寄存器等（共可讀9個(gè)寄存器） 前兩個(gè)就是溫度
a=ReadOneChar();//低位
b=ReadOneChar();//高位
t=b;
t<<=8;
t=t|a;
tt=t*0.0625;
t= tt*10+0.5;
return(t);
}
/*顯示子函數(shù)*/
void display(int bai,int shi,int ge)
{
P2=0XFB; //顯示小數(shù)點(diǎn)
P0=0X80; //顯示小數(shù)點(diǎn)
delay(50);//顯示小數(shù)點(diǎn)
P2=0xf7;
P0=table[bai];//顯示千位
delay(50);//一小段延時(shí)動(dòng)態(tài)顯示
P2=0xfb;
P0=table[shi];//顯示百位
delay(50);
P2=0xfd;
P0=table[ge];//顯示十位
delay(100);
}
//*****************************Music******************************************************
//揮著翅膀的女孩
unsigned char code Music_Girl[]={ 0x17,0x02, 0x17,0x03, 0x18,0x03, 0x19,0x02, 0x15,0x03,
0x16,0x03, 0x17,0x03, 0x17,0x03, 0x17,0x03, 0x18,0x03,
0x19,0x02, 0x16,0x03, 0x17,0x03, 0x18,0x02, 0x18,0x03,
0x17,0x03, 0x15,0x02, 0x18,0x03, 0x17,0x03, 0x18,0x02,
0x10,0x03, 0x15,0x03, 0x16,0x02, 0x15,0x03, 0x16,0x03,
0x17,0x02, 0x17,0x03, 0x18,0x03, 0x19,0x02, 0x1A,0x03,
0x1B,0x03, 0x1F,0x03, 0x1F,0x03, 0x17,0x03, 0x18,0x03,
0x19,0x02, 0x16,0x03, 0x17,0x03, 0x18,0x03, 0x17,0x03,
0x18,0x03, 0x1F,0x03, 0x1F,0x02, 0x16,0x03, 0x17,0x03,
0x18,0x03, 0x17,0x03, 0x18,0x03, 0x20,0x03, 0x20,0x02,
0x1F,0x03, 0x1B,0x03, 0x1F,0x66, 0x20,0x03, 0x21,0x03,
0x20,0x03, 0x1F,0x03, 0x1B,0x03, 0x1F,0x66, 0x1F,0x03,
0x1B,0x03, 0x19,0x03, 0x19,0x03, 0x15,0x03, 0x1A,0x66,
0x1A,0x03, 0x19,0x03, 0x15,0x03, 0x15,0x03, 0x17,0x03,
0x16,0x66, 0x17,0x04, 0x18,0x04, 0x18,0x03, 0x19,0x03,
0x1F,0x03, 0x1B,0x03, 0x1F,0x66, 0x20,0x03, 0x21,0x03,
0x20,0x03, 0x1F,0x03, 0x1B,0x03, 0x1F,0x66, 0x1F,0x03,
0x1B,0x03, 0x19,0x03, 0x19,0x03, 0x15,0x03, 0x1A,0x66,
0x1A,0x03, 0x19,0x03, 0x19,0x03, 0x1F,0x03, 0x1B,0x03,
0x1F,0x00, 0x1A,0x03, 0x1A,0x03, 0x1A,0x03, 0x1B,0x03,
0x1B,0x03, 0x1A,0x03, 0x19,0x03, 0x19,0x02, 0x17,0x03,
0x15,0x17, 0x15,0x03, 0x16,0x03, 0x17,0x03, 0x18,0x03,
0x17,0x04, 0x18,0x0E, 0x18,0x03, 0x17,0x04, 0x18,0x0E,
0x18,0x66, 0x17,0x03, 0x18,0x03, 0x17,0x03, 0x18,0x03,
0x20,0x03, 0x20,0x02, 0x1F,0x03, 0x1B,0x03, 0x1F,0x66,
0x20,0x03, 0x21,0x03, 0x20,0x03, 0x1F,0x03, 0x1B,0x03,
0x1F,0x66, 0x1F,0x04, 0x1B,0x0E, 0x1B,0x03, 0x19,0x03,
0x19,0x03, 0x15,0x03, 0x1A,0x66, 0x1A,0x03, 0x19,0x03,
0x15,0x03, 0x15,0x03, 0x17,0x03, 0x16,0x66, 0x17,0x04,
0x18,0x04, 0x18,0x03, 0x19,0x03, 0x1F,0x03, 0x1B,0x03,
0x1F,0x66, 0x20,0x03, 0x21,0x03, 0x20,0x03, 0x1F,0x03,
0x1B,0x03, 0x1F,0x66, 0x1F,0x03, 0x1B,0x03, 0x19,0x03,
0x19,0x03, 0x15,0x03, 0x1A,0x66, 0x1A,0x03, 0x19,0x03,
0x19,0x03, 0x1F,0x03, 0x1B,0x03, 0x1F,0x00, 0x18,0x02,
0x18,0x03, 0x1A,0x03, 0x19,0x0D, 0x15,0x03, 0x15,0x02,
0x18,0x66, 0x16,0x02, 0x17,0x02, 0x15,0x00, 0x00,0x00};
//***********************************************************************************
main()
{
int temp;
InitialSound();
Play(Music_Girl,0,3,360);
Delay1ms(500);
while(1)
{
temp=ReadTemperature();//讀溫度
bai=temp%1000/100;//顯示百位
shi=temp%100/10;//顯示十位
ge=temp%10;//顯示個(gè)位
display(bai,shi,ge);//顯示函數(shù)
}
}
/**************************************************************************