new device: pushbutton

things/DeviceButton.cpp

@@ -0,0 +1,25 @@
+#include "DeviceButton.h"
+
+void DeviceButton::deviceSetup() {
+  pinMode(pin, INPUT);
+}
+
+void DeviceButton::deviceRegister() {
+  Homie.registerNode(buttonNode);
+}
+
+void DeviceButton::deviceLoop() {
+  byte debounce = 0;
+  for (int i = 0; i < 3; i++) {
+    if (digitalRead(pin) == state) {
+      return;
+    }
+    delay(10);
+  }
+  state = !state;
+  Serial.print("button: ");
+  Serial.println(state);
+  if (!Homie.setNodeProperty(buttonNode, "state", String(state), false)) {
+    Serial.println("Sending failed");
+  }
+}

things/DeviceButton.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "Device.h"
+#include <Homie.h>
+
+class DeviceButton : public Device {
+  public:
+    inline DeviceButton(byte buttonPin) {
+      pin = buttonPin;
+    }
+    virtual void deviceSetup();
+    virtual void deviceRegister();
+    virtual void deviceLoop();
+  private:
+    byte pin;
+    bool state = LOW;
+    HomieNode buttonNode = HomieNode("button", "button");
+};

things/things.ino

@@ -5,6 +5,7 @@
 #include "DeviceDht.h"
 #include "DeviceIrRx.h"
 #include "DeviceIrTx.h"
+#include "DeviceButton.h"
 
 const byte PIN_LED_RED = D8;
 const byte PIN_LED_GREEN = D6;
@@ -25,12 +26,16 @@ DeviceIrRx deviceIrRx(PIN_IRRX, PIN_POWER);
 const byte PIN_IRTX = D2;
 DeviceIrTx deviceIrTx(PIN_IRTX);
 
+const byte PIN_BUTTON = D2;
+DeviceButton deviceButton(PIN_BUTTON);
+
 Device* devices[] = {
   &deviceLed,
   &deviceLdr,
   &deviceDht,
   &deviceIrRx,
   &deviceIrTx,
+  &deviceButton,
 };
 
 void setupHandler() {