1 #include "DS18B20_S.h"
 2 //传感器设定为10位模式，每次转换时间<187.5ms,如果需要12位模式，请修改库文件of ds.set(0x7F);
 3 DS18B20_S  ds(9);//pin9
 4 void setup() {
 5   Serial.begin(9600);
 6 }
 7 void loop() { 
 8   ds.start();//开始测量（所有传感器）
 9   float a=ds.get();
10   delay(200);//2根线连接模式
11   Serial.print("c0=");
12   if(a>200){ //CRC 校验错误
13     Serial.println("CRC error");
14   }
15   else{  
16     Serial.println(a); 
17   }
18   
19   //下面的不重要
20   //   void set(byte n);//set(0x1F) 9位模式 delay(94) ;
21                              //0x3F 10位模式 delay(188);
22                              //0x5F 11位模式 delay(375);
23                              //0x7F 12 位模式 delay(750);
24 }

 1 //上拉电阻！！！！！！！！！！！！！！！！！
 2 #include <OneWire.h>
 3 #include <DallasTemperature.h>
 4 
 5 // Data wire is plugged into port 2 on the Arduino
 6 #define ONE_WIRE_BUS 2
 7 
 8 // Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
 9 OneWire oneWire(ONE_WIRE_BUS);
10 
11 // Pass our oneWire reference to Dallas Temperature. 
12 DallasTemperature sensors(&oneWire);
13 
14 void setup(void)
15 {
16   // start serial port
17   Serial.begin(9600);
18   Serial.println("Dallas Temperature IC Control Library Demo");
19 
20   // Start up the library
21   sensors.begin();
22 }
23 
24 void loop(void)
25 { 
26   // call sensors.requestTemperatures() to issue a global temperature 
27   // request to all devices on the bus
28   Serial.print("Requesting temperatures...");
29   sensors.requestTemperatures(); // Send the command to get temperatures
30   Serial.println("DONE");
31   
32   Serial.print("Temperature for the device 1 (index 0) is: ");
33   Serial.println(sensors.getTempCByIndex(0));  
34 }