ESP32 DHT22 (Blynk)

 ESP32 DHT22 (Blynk)

WOKWI程式

#define BLYNK_PRINT Serial

#define BLYNK_TEMPLATE_ID "TMPL6BrcHyG1i"

#define BLYNK_TEMPLATE_NAME "DHT22"

#define BLYNK_AUTH_TOKEN "ZHp5tlWYKk0Txynw5besSRULNcjT9UmE"

#include <WiFi.h>

#include <WiFiClient.h>

#include <BlynkSimpleEsp32.h>

#include "DHTesp.h"

const int DHT_PIN = 15;

#define LED 12

DHTesp dhtSensor;

int temp;

int humi;

// Your WiFi credentials.

// Set password to "" for open networks.

char ssid[] = "Wokwi-GUEST";

char pass[] = "";

BlynkTimer timer;

// This function sends Arduino's up time every second to Virtual Pin (5).

// In the app, Widget's reading frequency should be set to PUSH. This means

// that you define how often to send data to Blynk App.

void myTimerEvent()

{

  // You can send any value at any time.

  // Please don't send more that 10 values per second.

  TempAndHumidity  data = dhtSensor.getTempAndHumidity();

  temp=data.temperature;

  humi=data.humidity;

  Blynk.virtualWrite(V0, temp);

  Blynk.virtualWrite(V1, humi);

  Serial.println("Temp: " + String(data.temperature, 2) + "°C");

  Serial.println("Humidity: " + String(data.humidity, 1) + "%");

  Serial.println("---");

 

}

BLYNK_WRITE(V2)

{

  int pinValue = param.asInt();

  Serial.print("V2 Switch value is: ");

  Serial.println(pinValue);

  if(pinValue == 1){

    digitalWrite(LED,HIGH);

    Serial.println("Led 亮");  

  }

  else{

    digitalWrite(LED,LOW);

    Serial.println("Led 滅");

  }

}

void setup() {

  Serial.begin(115200);

  pinMode(LED, OUTPUT);

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  timer.setInterval(1000L, myTimerEvent);

}

void loop() {

 

  Blynk.run();

  timer.run(); // Initiates BlynkTimer

 

}