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arduino-cli/libraries/Blynk/examples/More/DHT11/DHT11.ino

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+/*************************************************************
+  Download latest Blynk library here:
+    https://github.com/blynkkk/blynk-library/releases/latest
+
+  Blynk is a platform with iOS and Android apps to control
+  Arduino, Raspberry Pi and the likes over the Internet.
+  You can easily build graphic interfaces for all your
+  projects by simply dragging and dropping widgets.
+
+    Downloads, docs, tutorials: http://www.blynk.cc
+    Sketch generator:           http://examples.blynk.cc
+    Blynk community:            http://community.blynk.cc
+    Follow us:                  http://www.fb.com/blynkapp
+                                http://twitter.com/blynk_app
+
+  Blynk library is licensed under MIT license
+  This example code is in public domain.
+
+ *************************************************************
+
+  This example shows how value can be pushed from Arduino to
+  the Blynk App.
+
+  WARNING :
+  For this example you'll need Adafruit DHT sensor libraries:
+    https://github.com/adafruit/Adafruit_Sensor
+    https://github.com/adafruit/DHT-sensor-library
+
+  App project setup:
+    Value Display widget attached to V5
+    Value Display widget attached to V6
+ *************************************************************/
+
+/* Comment this out to disable prints and save space */
+#define BLYNK_PRINT Serial
+
+
+#include <SPI.h>
+#include <Ethernet.h>
+#include <BlynkSimpleEthernet.h>
+#include <DHT.h>
+
+// You should get Auth Token in the Blynk App.
+// Go to the Project Settings (nut icon).
+char auth[] = "YourAuthToken";
+
+#define DHTPIN 2          // What digital pin we're connected to
+
+// Uncomment whatever type you're using!
+#define DHTTYPE DHT11     // DHT 11
+//#define DHTTYPE DHT22   // DHT 22, AM2302, AM2321
+//#define DHTTYPE DHT21   // DHT 21, AM2301
+
+DHT dht(DHTPIN, DHTTYPE);
+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 sendSensor()
+{
+  float h = dht.readHumidity();
+  float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit
+
+  if (isnan(h) || isnan(t)) {
+    Serial.println("Failed to read from DHT sensor!");
+    return;
+  }
+  // You can send any value at any time.
+  // Please don't send more that 10 values per second.
+  Blynk.virtualWrite(V5, h);
+  Blynk.virtualWrite(V6, t);
+}
+
+void setup()
+{
+  // Debug console
+  Serial.begin(9600);
+
+  Blynk.begin(auth);
+
+  dht.begin();
+
+  // Setup a function to be called every second
+  timer.setInterval(1000L, sendSensor);
+}
+
+void loop()
+{
+  Blynk.run();
+  timer.run();
+}
+