code

#include <BlynkSimpleEsp32.h>

#include <Adafruit_Sensor.h>

#include <DHT.h>

#include <DHT_U.h>

#define DHTPIN 16   // Digital pin connected to the DHT sensor 

// Feather HUZZAH ESP8266 note: use pins 3, 4, 5, 12, 13 or 14 --

// Pin 15 can work but DHT must be disconnected during program upload.

// Uncomment the type of sensor in use:

//#define DHTTYPE  DHT11   // DHT 11

#define DHTTYPE  DHT22   // DHT 22 (AM2302)

//#define DHTTYPE  DHT21   // DHT 21 (AM2301)

// See guide for details on sensor wiring and usage:

//  https://learn.adafruit.com/dht/overview

DHT_Unified dht(DHTPIN, DHTTYPE);

uint32_t delayMS;

void setup() {

 Serial.begin(9600);

 // Initialize device.

 dht.begin();

 Serial.println(F("DHTxx 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);

  delay(delayMS);

 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);

  delay(delayMS);

 if (isnan(event.relative_humidity)) {

  Serial.println(F("Error reading humidity!"));

 }

 else {

  Serial.print(F("Humidity: "));

  Serial.print(event.relative_humidity);

  Serial.println(F("%"));

 }

}