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arduino-cli/libraries/Blynk/examples/More/Sync/ButtonInterrupt/ButtonInterrupt.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 to monitor a button state
+  using interrupts mechanism.
+
+  App project setup:
+    LED widget on V1
+ *************************************************************/
+
+/* Comment this out to disable prints and save space */
+#define BLYNK_PRINT Serial
+
+
+#include <SPI.h>
+#include <Ethernet.h>
+#include <BlynkSimpleEthernet.h>
+
+// You should get Auth Token in the Blynk App.
+// Go to the Project Settings (nut icon).
+char auth[] = "YourAuthToken";
+
+WidgetLED led1(V1);
+
+// We make these values volatile, as they are used in interrupt context
+volatile bool pinChanged = false;
+volatile int  pinValue   = 0;
+
+// Most boards won't send data to WiFi out of interrupt handler.
+// We just store the value and process it in the main loop.
+void checkPin()
+{
+  // Invert state, since button is "Active LOW"
+  pinValue = !digitalRead(2);
+
+  // Mark pin value changed
+  pinChanged = true;
+}
+
+void setup()
+{
+  // Debug console
+  Serial.begin(9600);
+
+  Blynk.begin(auth);
+
+  // Make pin 2 HIGH by default
+  pinMode(2, INPUT_PULLUP);
+  // Attach INT to our handler
+  attachInterrupt(digitalPinToInterrupt(2), checkPin, CHANGE);
+}
+
+void loop()
+{
+  Blynk.run();
+
+  if (pinChanged) {
+
+    // Process the value
+    if (pinValue) {
+      led1.on();
+    } else {
+      led1.off();
+    }
+
+    // Clear the mark, as we have processed the value
+    pinChanged = false;
+  }
+}
+

arduino-cli/libraries/Blynk/examples/More/Sync/ButtonPoll/ButtonPoll.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 to monitor a button state
+  using polling mechanism.
+
+  App project setup:
+    LED widget on V1
+ *************************************************************/
+
+/* Comment this out to disable prints and save space */
+#define BLYNK_PRINT Serial
+
+
+#include <SPI.h>
+#include <Ethernet.h>
+#include <BlynkSimpleEthernet.h>
+
+// You should get Auth Token in the Blynk App.
+// Go to the Project Settings (nut icon).
+char auth[] = "YourAuthToken";
+
+int prevState = -1;
+int currState = -1;
+long lastChangeTime = 0;
+
+void checkPin()
+{
+  // Invert state, since button is "Active LOW"
+  int state = !digitalRead(2);
+
+  // Debounce mechanism
+  long t = millis();
+  if (state != prevState) {
+    lastChangeTime = t;
+  }
+  if (t - lastChangeTime > 50) {
+    if (state != currState) {
+      currState = state;
+      Blynk.virtualWrite(V1, state);
+    }
+  }
+  prevState = state;
+}
+
+void setup()
+{
+  // Debug console
+  Serial.begin(9600);
+
+  Blynk.begin(auth);
+
+  // Make pin 2 default HIGH, and attach INT to our handler
+  pinMode(2, INPUT_PULLUP);
+}
+
+void loop()
+{
+  Blynk.run();
+  checkPin();
+}
+

arduino-cli/libraries/Blynk/examples/More/Sync/HardwareSyncStateFromApp/HardwareSyncStateFromApp.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.
+
+ *************************************************************
+
+  You can synchronize the state of widgets with hardware states,
+  even if hardware resets or looses connection temporarily
+
+  Project setup in the Blynk app:
+    Slider widget (0...1024) on V0
+    Value display (0...1024) on V2
+    Button widget on digital pin (connected to an LED)
+ *************************************************************/
+
+/* Comment this out to disable prints and save space */
+#define BLYNK_PRINT Serial
+
+
+#include <SPI.h>
+#include <Ethernet.h>
+#include <BlynkSimpleEthernet.h>
+
+// You should get Auth Token in the Blynk App.
+// Go to the Project Settings (nut icon).
+char auth[] = "YourAuthToken";
+
+// This function will run every time Blynk connection is established
+BLYNK_CONNECTED() {
+  // Request Blynk server to re-send latest values for all pins
+  Blynk.syncAll();
+
+  // You can also update individual virtual pins like this:
+  //Blynk.syncVirtual(V0, V2);
+
+  // Let's write your hardware uptime to Virtual Pin 2
+  int value = millis() / 1000;
+  Blynk.virtualWrite(V2, value);
+}
+
+BLYNK_WRITE(V0)
+{
+  // Use of syncAll() will cause this function to be called
+  // Parameter holds last slider value
+  int sliderValue0 = param.asInt();
+}
+
+BLYNK_WRITE(V2)
+{
+  // You'll get uptime value here as result of syncAll()
+  int uptime = param.asInt();
+}
+
+void setup()
+{
+  // Debug console
+  Serial.begin(9600);
+
+  Blynk.begin(auth);
+}
+
+void loop()
+{
+  Blynk.run();
+}
+

arduino-cli/libraries/Blynk/examples/More/Sync/SyncPhysicalButton/SyncPhysicalButton.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 to synchronize Button widget
+  and physical button state.
+
+  App project setup:
+    Button widget attached to V2 (Switch mode)
+ *************************************************************/
+
+/* Comment this out to disable prints and save space */
+#define BLYNK_PRINT Serial
+
+
+#include <SPI.h>
+#include <Ethernet.h>
+#include <BlynkSimpleEthernet.h>
+
+// You should get Auth Token in the Blynk App.
+// Go to the Project Settings (nut icon).
+char auth[] = "YourAuthToken";
+
+// Set your LED and physical button pins here
+const int ledPin = 7;
+const int btnPin = 8;
+
+BlynkTimer timer;
+void checkPhysicalButton();
+
+int ledState = LOW;
+int btnState = HIGH;
+
+// Every time we connect to the cloud...
+BLYNK_CONNECTED() {
+  // Request the latest state from the server
+  Blynk.syncVirtual(V2);
+
+  // Alternatively, you could override server state using:
+  //Blynk.virtualWrite(V2, ledState);
+}
+
+// When App button is pushed - switch the state
+BLYNK_WRITE(V2) {
+  ledState = param.asInt();
+  digitalWrite(ledPin, ledState);
+}
+
+void checkPhysicalButton()
+{
+  if (digitalRead(btnPin) == LOW) {
+    // btnState is used to avoid sequential toggles
+    if (btnState != LOW) {
+
+      // Toggle LED state
+      ledState = !ledState;
+      digitalWrite(ledPin, ledState);
+
+      // Update Button Widget
+      Blynk.virtualWrite(V2, ledState);
+    }
+    btnState = LOW;
+  } else {
+    btnState = HIGH;
+  }
+}
+
+void setup()
+{
+  // Debug console
+  Serial.begin(9600);
+
+  Blynk.begin(auth);
+
+  pinMode(ledPin, OUTPUT);
+  pinMode(btnPin, INPUT_PULLUP);
+  digitalWrite(ledPin, ledState);
+
+  // Setup a function to be called every 100 ms
+  timer.setInterval(100L, checkPhysicalButton);
+}
+
+void loop()
+{
+  Blynk.run();
+  timer.run();
+}
+