【雕爷学编程】Arduino动手做（55）--DHT11温湿度传感器模块3

/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验五十五：DHT11 温湿度复合传感器模块（数字型单总线通信）
  安装库：打开IDE—工具—管理库—搜索DHT—安装"DHT sensor library"
  项目测试：读取DHT11的串口输出数据
  模块接线：
  DHT11   Arduino
  VCC         5V
  GND         GND
  DATA        D2
*/

#include "DHT.h"
#define DHTPIN 2  

// 取消注释您正在使用的任何类型！ 
#define DHTTYPE DHT11   // DHT 11
//#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321
//#define DHTTYPE DHT21   // DHT 21 (AM2301)

//初始化DHT传感器
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  Serial.println(F("DHT11现场测试!"));
  dht.begin();
}

void loop() {
  delay(2000);

  //读取温度或湿度大约需要250毫秒！
  //传感器读数也可能长达2秒“旧”（这是一个非常慢的传感器）
  float h = dht.readHumidity();
  // 读取温度为摄氏温度（默认）
  float t = dht.readTemperature();
  // 将温度读取为华氏度
  float f = dht.readTemperature(true);

  // 检查是否有任何读取失败并提早退出（重试）
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println(F("无法从DHT传感器读取！ "));
    return;
  }

  // 计算华氏热量指数（默认值）
  float hif = dht.computeHeatIndex(f, h);
  // 计算摄氏温度指数
  float hic = dht.computeHeatIndex(t, h, false);

  Serial.print(F("湿度: "));
  Serial.print(h);
  Serial.print(F("%  温度: "));
  Serial.print(t);
  Serial.print(F("°C "));
  Serial.print(f);
  Serial.print(F("°F  热量指数: "));
  Serial.print(hic);
  Serial.print(F("°C "));
  Serial.print(hif);
  Serial.println(F("°F"));
}

/*
  【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验五十五：DHT11 温湿度复合传感器模块（数字型单总线通信）
  安装库：打开IDE—工具—管理库—搜索DHT—安装"DHT sensor library"
  项目测试：读取DHT11的串口输出数据
  模块接线：
  DHT11   Arduino
  VCC         5V
  GND         GND
  DATA        D2
*/

#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>
#define DHTPIN 2 

// Uncomment the type of sensor in use:
#define DHTTYPE    DHT11     // DHT 11
//#define DHTTYPE    DHT22     // DHT 22 (AM2302)
//#define DHTTYPE    DHT21     // DHT 21 (AM2301)

DHT_Unified dht(DHTPIN, DHTTYPE);

uint32_t delayMS;

void setup() {
  Serial.begin(9600);
  // Initialize device.
  dht.begin();
  Serial.println(F("DHT11 Unified Sensor Example"));
  // Print temperature sensor details.
  sensor_t sensor;
  dht.temperature().getSensor(&sensor);
  Serial.println(F("------------------------------------"));
  Serial.println(F("Temperature Sensor"));
  Serial.print  (F("Sensor Type: ")); Serial.println(sensor.name);
  Serial.print  (F("Driver Ver:  ")); Serial.println(sensor.version);
  Serial.print  (F("Unique ID:   ")); Serial.println(sensor.sensor_id);
  Serial.print  (F("Max Value:   ")); Serial.print(sensor.max_value); Serial.println(F("°C"));
  Serial.print  (F("Min Value:   ")); Serial.print(sensor.min_value); Serial.println(F("°C"));
  Serial.print  (F("Resolution:  ")); Serial.print(sensor.resolution); Serial.println(F("°C"));
  Serial.println(F("------------------------------------"));
  // Print humidity sensor details.
  dht.humidity().getSensor(&sensor);
  Serial.println(F("Humidity Sensor"));
  Serial.print  (F("Sensor Type: ")); Serial.println(sensor.name);
  Serial.print  (F("Driver Ver:  ")); Serial.println(sensor.version);
  Serial.print  (F("Unique ID:   ")); Serial.println(sensor.sensor_id);
  Serial.print  (F("Max Value:   ")); Serial.print(sensor.max_value); Serial.println(F("%"));
  Serial.print  (F("Min Value:   ")); Serial.print(sensor.min_value); Serial.println(F("%"));
  Serial.print  (F("Resolution:  ")); Serial.print(sensor.resolution); Serial.println(F("%"));
  Serial.println(F("------------------------------------"));
  // Set delay between sensor readings based on sensor details.
  delayMS = sensor.min_delay / 1000;
}

void loop() {
  // Delay between measurements.
  delay(delayMS);
  // Get temperature event and print its value.
  sensors_event_t event;
  dht.temperature().getEvent(&event);
  if (isnan(event.temperature)) {
    Serial.println(F("Error reading temperature!"));
  }
  else {
    Serial.print(F("Temperature: "));
    Serial.print(event.temperature);
    Serial.println(F("°C"));
  }
  // Get humidity event and print its value.
  dht.humidity().getEvent(&event);
  if (isnan(event.relative_humidity)) {
    Serial.println(F("Error reading humidity!"));
  }
  else {
    Serial.print(F("Humidity: "));
    Serial.print(event.relative_humidity);
    Serial.println(F("%"));
  }
}