Arduino / ESP8266 使用 DS18B20的例程

Arduino / ESP8266 使用 DS18B20的例程
接线：
VDD–5V
GND–GND
DQ–D7(此处为8266，Arduino连2)
注意：DQ和5V之间需要连接一个4.7k的电阻，或者用两个10k的电阻并联也实现相同的效果。

#include <OneWire.h>
#include <DallasTemperature.h>
#define ONE_WIRE_BUS 13//8266连接GPIO13即D7，Arduino连接port 2

OneWire oneWire(ONE_WIRE_BUS);

DallasTemperature sensors(&oneWire);

DeviceAddress insideThermometer, outsideThermometer;
void setup() {
  Serial.begin(115200);
  sensors.begin();
  if (!sensors.getAddress(insideThermometer, 0)) Serial.println("Unable to find address for Device 0"); 
  if (!sensors.getAddress(outsideThermometer, 1)) Serial.println("Unable to find address for Device 1"); 
}
float tempC;
//温度相关函数
void printTemperature(DeviceAddress deviceAddress)
{
  tempC = sensors.getTempC(deviceAddress);
  Serial.print("Temp C: ");
  Serial.print(tempC);
}
void printData(DeviceAddress deviceAddress)
{
  printTemperature(deviceAddress);
  Serial.println();
}
void checkAlarm(DeviceAddress deviceAddress)
{
  if (sensors.hasAlarm(deviceAddress))
  {
    printData(deviceAddress);
  }
}
void loop(){
	sensors.requestTemperatures();
  checkAlarm(insideThermometer);
  checkAlarm(outsideThermometer);
  delay(300);
}