From 96693cba649b792c2a215948a8514c8938213abb Mon Sep 17 00:00:00 2001
From: Ronald Schaten <ronald@schatenseite.de>
Date: Thu, 31 Mar 2016 21:08:43 +0200
Subject: [PATCH] handler for switching LED on or off

---
 things.ino | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/things.ino b/things.ino
index b00b8a9..c53e485 100644
--- a/things.ino
+++ b/things.ino
@@ -50,6 +50,25 @@ void setupHandler() {
   #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);
@@ -170,6 +189,7 @@ void setup() {
   Homie.registerNode(ldrNode);
   #endif
   #ifdef HAS_LED
+  ledNode.subscribe("on", ledOnHandler);
   ledNode.subscribe("color", ledColorHandler);
   Homie.registerNode(ledNode);
   #endif