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

things/things.ino

@@ -1,6 +1,7 @@
 #include <Homie.h>  // https://github.com/marvinroger/homie-esp8266
 #include <DHT.h>    // https://github.com/adafruit/DHT-sensor-library
 
+#include "DeviceLed.h"
 #include "DeviceLdr.h"
 
 #define HAS_LDR
@@ -11,10 +12,7 @@
 #define PIN_LED_RED D8
 #define PIN_LED_GREEN D6
 #define PIN_LED_BLUE D7
-HomieNode ledNode("led", "rgb");
-int led_red = 0;
-int led_green = 0;
-int led_blue = 0;
+DeviceLed deviceLed(PIN_LED_RED, PIN_LED_GREEN, PIN_LED_BLUE);
 
 // HAS_LDR
 #define PIN_LDR A0
@@ -37,70 +35,13 @@ void setupHandler() {
     deviceLdr.setup();
   #endif
   #ifdef HAS_LED
-    pinMode(PIN_LED_RED, OUTPUT);
-    pinMode(PIN_LED_GREEN, OUTPUT);
-    pinMode(PIN_LED_BLUE, OUTPUT);
-    analogWrite(PIN_LED_RED, led_red);
-    analogWrite(PIN_LED_GREEN, led_green);
-    analogWrite(PIN_LED_BLUE, led_blue);
+    deviceLed.setup();
   #endif
   #ifdef HAS_DHT
     dht.begin();
   #endif
 }
 
-bool ledOnHandler(String value) {
-  if (value == "true") {
-    analogWrite(PIN_LED_RED, led_red);
-    analogWrite(PIN_LED_GREEN, led_green);
-    analogWrite(PIN_LED_BLUE, led_blue);
-    Homie.setNodeProperty(ledNode, "on", "true");
-    Serial.println("led is on");
-  } else if (value == "false") {
-    analogWrite(PIN_LED_RED, 0);
-    analogWrite(PIN_LED_GREEN, 0);
-    analogWrite(PIN_LED_BLUE, 0);
-    Homie.setNodeProperty(ledNode, "on", "false");
-    Serial.println("led is off");
-  } else {
-    return false;
-  }
-  return true;
-}
-
-bool 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(PIN_LED_RED, led_red);
-    }
-    if (json_in.containsKey("green")) {
-      led_green = json_in["green"];
-      analogWrite(PIN_LED_GREEN, led_green);
-    }
-    if (json_in.containsKey("blue")) {
-      led_blue = json_in["blue"];
-      analogWrite(PIN_LED_BLUE, 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;
-}
-
 // compare float values
 bool isEqual(float a, float b, float epsilon=0.001) {
   return fabs(a - b) <= epsilon * fabs(a);
@@ -159,6 +100,9 @@ void loopHandler() {
   #ifdef HAS_LDR
   deviceLdr.loop();
   #endif
+  #ifdef HAS_LED
+  deviceLed.loop();
+  #endif
   #ifdef HAS_DHT
   loopHandlerDHT();
   #endif
@@ -170,9 +114,7 @@ void setup() {
   deviceLdr.homieRegister();
   #endif
   #ifdef HAS_LED
-  ledNode.subscribe("on", ledOnHandler);
-  ledNode.subscribe("color", ledColorHandler);
-  Homie.registerNode(ledNode);
+  deviceLed.homieRegister();
   #endif
   #ifdef HAS_DHT
   Homie.registerNode(humidityNode);