initial commit

mqqt-neopixel/mqqt-neo/mqqt-neo.ino

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+// Neopixel
+#include <Adafruit_NeoPixel.h>
+
+// ESP 8266
+#include <ESP8266WiFi.h>
+#include <PubSubClient.h>
+
+// MQTT Subscribes
+const char* SubscribeTo = "esp/1/out";
+const char* SubscribeFrom = "esp/1/in";
+
+// WiFi & MQTT Server
+const char* ssid = "Arubaruba";
+const char* password = "Keepitsimplestupid1";
+const char* mqtt_server = "192.168.178.50";
+
+WiFiClient espClient;
+PubSubClient pubClient(espClient);
+long lastMsg = 0;
+char msg[50];
+String message("#000000");
+String lastMessage("#000000");
+
+// Neopixel Config
+#define NeoPIN 13
+#define NUM_LEDS 4
+int brightness = 150;
+Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, NeoPIN, NEO_RGB + NEO_KHZ800);
+
+void setup() {
+  Serial.begin ( 115200 );
+  
+  // ##############
+  // NeoPixel start
+  Serial.println();
+  strip.setBrightness(brightness);
+  strip.begin();
+  strip.show(); 
+  delay(50);
+  
+  // WiFi
+  setup_wifi();
+  
+  // MQTT
+  Serial.print("Connecting to MQTT...");
+  // connecting to the mqtt server
+  pubClient.setServer(mqtt_server, 1883);
+  pubClient.setCallback(callback);
+  Serial.println("done!");
+}
+
+void callback(char* topic, byte* payload, unsigned int length) {
+  Serial.print("Message arrived [");
+  Serial.print(topic);
+  Serial.print("] ");
+  String color("#");
+  
+  for (int i = 0; i < length; i++) {
+    Serial.print((char)payload[i]);
+    if(i > 0){
+      color = color + String((char)payload[i]);  
+    }  
+  }
+  
+  Serial.println();
+
+
+  // finding payload
+  if((char)payload[0] == '#'){
+    // setting color
+     setNeoColor(color);
+  }
+  
+}
+
+void setup_wifi() {
+
+  delay(10);
+  // We start by connecting to a WiFi network
+  Serial.println();
+  Serial.print("Connecting to ");
+  Serial.println(ssid);
+
+  WiFi.begin(ssid, password);
+
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(100);
+    Serial.print(".");
+  }
+
+  Serial.println("");
+  Serial.println("WiFi connected");
+  Serial.println("IP address: ");
+  Serial.println(WiFi.localIP());
+}
+
+void loop() {
+  if (!pubClient.connected()) {
+    delay(100);
+    reconnect();
+  }
+  pubClient.loop();
+  
+  long now = millis();
+  if (now - lastMsg > 60000 || lastMessage.indexOf(message) < 0 ) {
+    
+    lastMsg = now;
+    Serial.print("Publish message: ");
+    Serial.println(message);
+    char msg[7];
+    message.toCharArray(msg, message.length());
+    Serial.print("Publishing...");
+    pubClient.publish(SubscribeTo, msg);
+    Serial.println("Done!!!");
+    lastMessage = message;
+  }
+  delay(10);
+}
+
+
+void setNeoColor(String value){
+    Serial.println("Setting Neopixel..." + value);
+    message = value;
+    int number = (int) strtol( &value[1], NULL, 16);
+    
+    int r = number >> 16;
+    int g = number >> 8 & 0xFF;
+    int b = number & 0xFF;
+
+    
+
+     Serial.print("RGB: ");
+    Serial.print(r, DEC);
+    Serial.print(" ");
+    Serial.print(g, DEC);
+    Serial.print(" ");
+    Serial.print(b, DEC);
+    Serial.println(" ");
+  
+   for(int i=0; i < NUM_LEDS; i++) {
+      strip.setPixelColor(i, strip.Color( g, r, b ) );
+    }
+    strip.show();
+    
+    Serial.println("on.");
+}
+
+
+void reconnect() {
+  // Loop until we're reconnected
+  while (!pubClient.connected()) {
+    // Attempt to connect
+    if (pubClient.connect("ESP8266Client")) {
+      Serial.println("connected");
+      // Once connected, publish an announcement...
+      pubClient.publish(SubscribeTo, "Restart");
+      // ... and resubscribe
+      pubClient.subscribe(SubscribeFrom);
+    } else {
+      Serial.print("failed, rc=");
+      Serial.print(pubClient.state());
+      Serial.println(" try again in 5 seconds");
+      // Wait 5 seconds before retrying
+      delay(5000);
+    }
+  }
+}