modularized led, doesn't work yet, though

things/DeviceLed.h

@@ -0,0 +1,101 @@
+#ifndef DEVICELED_H
+#define DEVICELED_H
+
+#include "Device.h"
+#include <Homie.h>
+
+class DeviceLed : public Device {
+  public:
+    inline DeviceLed(byte ledRed, byte ledGreen, byte ledBlue) {
+      pinRed = ledRed;
+      pinGreen = ledGreen;
+      pinBlue = ledBlue;
+    }
+    virtual void setup();
+    virtual void homieRegister();
+    virtual void loop();
+    bool ledOnHandler(String value);
+    bool ledColorHandler(String message);
+  private:
+    byte pinRed;
+    byte pinGreen;
+    byte pinBlue;
+    int led_red = 0;
+    int led_green = 0;
+    int led_blue = 0;
+    HomieNode ledNode{"led", "rgb"};
+};
+
+void DeviceLed::setup() {
+  pinMode(pinRed, OUTPUT);
+  pinMode(pinGreen, OUTPUT);
+  pinMode(pinBlue, OUTPUT);
+  analogWrite(pinRed, led_red);
+  analogWrite(pinGreen, led_green);
+  analogWrite(pinBlue, led_blue);
+}
+
+bool DeviceLed::ledOnHandler(String value) {
+  if (value == "true") {
+    analogWrite(pinRed, led_red);
+    analogWrite(pinGreen, led_green);
+    analogWrite(pinBlue, led_blue);
+    Homie.setNodeProperty(ledNode, "on", "true");
+    Serial.println("led is on");
+  } else if (value == "false") {
+    analogWrite(pinRed, 0);
+    analogWrite(pinGreen, 0);
+    analogWrite(pinBlue, 0);
+    Homie.setNodeProperty(ledNode, "on", "false");
+    Serial.println("led is off");
+  } else {
+    return false;
+  }
+  return true;
+}
+
+bool DeviceLed::ledColorHandler(String message) {
+  DynamicJsonBuffer json_inBuffer;
+  JsonObject& json_in = json_inBuffer.parseObject(message);
+  if (json_in.success()) {
+    if (json_in.containsKey("red")) {
+      led_red = json_in["red"];
+      analogWrite(pinRed, led_red);
+    }
+    if (json_in.containsKey("green")) {
+      led_green = json_in["green"];
+      analogWrite(pinGreen, led_green);
+    }
+    if (json_in.containsKey("blue")) {
+      led_blue = json_in["blue"];
+      analogWrite(pinBlue, led_blue);
+    }
+  } else {
+    Serial.println("parsing of JSON failed");
+  }
+
+  DynamicJsonBuffer json_outBuffer;
+  JsonObject& json_out = json_outBuffer.createObject();
+  json_out["red"] = led_red;
+  json_out["green"] = led_green;
+  json_out["blue"] = led_blue;
+  String response;
+  json_out.printTo(response);
+  Serial.print("led state: ");
+  Serial.println(response);
+  Homie.setNodeProperty(ledNode, "color", response);
+  return true;
+}
+
+void DeviceLed::homieRegister() {
+  // TODO this doesn't work :-(
+  //ledNode.subscribe("on", &DeviceLed::ledOnHandler());
+  //ledNode.subscribe("color", &DeviceLed::ledColorHandler());
+  Homie.registerNode(ledNode);
+}
+
+void DeviceLed::loop() {
+  return;
+}
+
+#endif