基于单片机的温湿度采集与控制程序（C语言）

这个程序可以实现通过温度的变化对电扇的转速进行控制。如果采纳答案还有追加分数
急、急、急！！！ 给你一个DS18B20的温度采集程序！
//ICC-AVR application builder : 2009-10-25 10:43:39
// Target : M16
// Crystal: 16.000Mhz

#include <iom16v.h>
#include <macros.h>
#define uint unsigned int
#define uchar unsigned char
#include "xianshi.c"
#include "delay.h"

#define CLR_DIR_1WIRE DDRD&=~BIT(4) //只要修改这里的参数就可以了
#define SET_DIR_1WIRE DDRD|=BIT(4) //里面什么都不用该！
#define CLR_OP_1WIRE PORTD&=~BIT(4)
#define SET_OP_1WIRE PORTD|=BIT(4)
#define CHECK_IP_1WIRE (PIND&0x10) //检测

unsigned char wmh,wml;
void init_1820()

SET_DIR_1WIRE; //设置PD4 为输出
SET_OP_1WIRE;
CLR_OP_1WIRE;
delay_nus(480); //480us以上
SET_OP_1WIRE;
CLR_DIR_1WIRE;
delay_nus(20); //15~60us
while(CHECK_IP_1WIRE);
SET_DIR_1WIRE;
SET_OP_1WIRE;
delay_nus(140); //60~240us

void write_1820(unsigned char x)

unsigned char m;
for(m=0;m<8;m++)

CLR_OP_1WIRE;
if(x&(1<<m)) //写数据了，先写低位的！
SET_OP_1WIRE;
else
CLR_OP_1WIRE;
delay_nus(40); //15~60us
SET_OP_1WIRE;

SET_OP_1WIRE;

unsigned char read_1820()

unsigned char temp,k,n;
temp=0;
for(n=0;n<8;n++)

CLR_OP_1WIRE;
SET_OP_1WIRE;
CLR_DIR_1WIRE;
k=(CHECK_IP_1WIRE); //读数据,从低位开始
if(k)
temp|=(1<<n);
else
temp&=~(1<<n);
delay_nus(50); //60~120us
SET_DIR_1WIRE;

return (temp);


unsigned int gettemp() //读取温度值

unsigned char temh,teml,wm0,wm1,wm2,wm3;
init_1820(); //复位18b20
write_1820(0xcc); // 发出转换命令
write_1820(0x44);
// delay_nms(800); //不延时也好使，不知道怎么回事！
init_1820();
write_1820(0xcc); //发出读命令
write_1820(0xbe);
teml=read_1820(); //读数据
temh=read_1820();
wm0=teml>>4; //只要高8位的低四位和低8位的高四位，温度范围0~99啦！
wm1=temh<<4;
wm2=wm1+wm0; //16进制转10进制
return wm2;


void main()

uint tem,ad[4],i;
port_init();

while(1)


tem = gettemp();
for(i=0;i<4;i++)

ad[3-i]=tem%10;
tem=tem/10;


for(i=0;i<4;i++)

show1(ad[i],i);
delay(5);




显示函数：
#include <iom16v.h>
#include <macros.h>

#define uint unsigned int
#define uchar unsigned char
#pragma data:code
const uint tab1[]=0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,
0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E,0x00; //共阳数码管代码表

const uint tab2[]=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,
0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0X00;//共阴数码管代码表

void port_init(void)

DDRA = 0xFF;
DDRB = 0xFF;
DDRC = 0xFF;
DDRD = 0x00;


void delay(uint ms)

uint i,j;
for(i=0;i<ms;i++)

for(j=0;j<1141;j++);


void show1(uchar j,uchar k)//显示函数

PORTB = ~BIT(k);
PORTA = tab2[j];
delay(1);

void show(uint ada)


uint i,ad[4];

for(i=0;i<4;i++)

ad[3-i]=ada%10;
ada = ada/10;

while(1)

for(i=0;i<4;i++)

show1((ad[i]),i);
delay(100);



程序我都调试过的，都是好的，有不会再问我。可以给分了吗？嘿嘿 参考知识1 帮做。98010052《基于DS18B20温度控制系统》本回答被提问者采纳