import

.gitignore

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+mqttfastled.h

README.md

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+Introduction
+============
+
+Effet cylon en rouge controlé par MQTT.  
+Pour lancer l'effet sur le LED Strip@D1 (GPIO5) :  
+```bash
+mosquitto_pub -d -u "<USER>" -P "<PASS>" -t "<TOPIC>" -m "ON"
+```  
+Pour l'arreter :   
+```bash
+mosquitto_pub -d -u "<USER>" -P "<PASS>" -t "<TOPIC>" -m "OFF"
+```  
+
+Un exemple de configuration pour home-assistant se trouve dans [ha_configuration.yml](ha\_configuration.yml).
+
+Matériel
+========
+  * 1x ESP8266 Lolin (Nodemcu v3)
+  * 1x Breadboard
+  * 1x Resistance 220Ω (jusqu'à 1kΩ)
+  * 1x LED Strip wb2812b
+  * 1x Transformateur AC-DC 220v-5v
+
+Médias
+======
+
+![Fritzing BreadBoard](mqttfastled_bb.png)
+![IRL](irl1.jpg)

ha_configuration.yml

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+switch:
+  platform: "mqtt"
+  name: "Test LED"
+  command_topic: "homeassistant/switch1" #Topic sur lequel on publie l'état de l'interrupteur
+  payload_on: "ON" # A vous de choisir le message envoyé lorsque l'interrupteur est allumé 
+  payload_off: "OFF" # et éteint
+  optimistic: true # Mettez à true pour maintenir l'état
+  qos: 0
+  retain: true
+  value_template: '{{ value.x }}'

mqttfastled.example.h

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+// LED
+#define NUM_LEDS 6
+#define LED_PIN  5 // = D1
+#define CHIPSET     WS2812B
+#define COLOR_ORDER GRB
+#define BRIGHTNESS        96
+#define FRAMES_PER_SECOND 120
+
+// WIFI
+#define wifi_ssid     "XXX"
+#define wifi_password "XXX"
+
+// MQTT
+#define mqtt_server   "XXX"
+#define mqtt_port     1883
+#define mqtt_user     "XXX"
+#define mqtt_password "XXX"

mqttfastled.ino

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+#include "mqttfastled.local.h"
+#include "mqttfastled.h"
+
+#define FASTLED_ESP8266_NODEMCU_PIN_ORDER
+#include <FastLED.h>
+#include <ESP8266WiFi.h>
+#include <PubSubClient.h>
+
+// LED
+CRGB leds[NUM_LEDS];
+bool ledGo = false;
+
+// WIFI
+WiFiClient espClient;
+
+// MQTT
+char message_buff[100];
+PubSubClient client(espClient);
+
+void setup() { 
+  Serial.begin(115200);
+  Serial.println("\nresetting");
+  
+  // WIFI
+  setupWifi();
+  
+  // MQTT
+  client.setServer(mqtt_server, mqtt_port);
+  client.setCallback(callbackMQTT);
+  testConnectMQTT();
+  client.subscribe("homeassistant/switch1");
+  
+  // LED
+  LEDS.addLeds<CHIPSET,LED_PIN, COLOR_ORDER>(leds, NUM_LEDS);
+  FastLED.setBrightness(BRIGHTNESS);
+  fill_solid(leds, NUM_LEDS, CRGB::Black);
+  FastLED.show();
+}
+
+// WIFI
+void setupWifi() {
+  Serial.println();
+  Serial.print("Connexion a ");
+  Serial.print(wifi_ssid);
+  WiFi.begin(wifi_ssid, wifi_password);
+  
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  
+  Serial.println();
+  Serial.print("IP : ");
+  Serial.println(WiFi.localIP());
+}
+
+// MQTT
+void testConnectMQTT() {
+  while (!client.connected()) {
+    Serial.print("Connexion au serveur MQTT... ");
+    if (client.connect("ESP8266Client", mqtt_user, mqtt_password)) {
+      Serial.println("OK");
+    } else {
+      Serial.print("KO, erreur : ");
+      Serial.print(client.state());
+      Serial.println(", on attend 5 secondes avant de recommencer");
+      delay(5000);
+    }
+  }
+}
+
+// Déclenche les actions à la réception d'un message
+void callbackMQTT(char* topic, byte* payload, unsigned int length) {
+  unsigned int i = 0;
+  Serial.print("Received [" + String(topic) + "] : ");
+  
+  // create character buffer with ending null terminator (string)
+  for(i = 0; i < length; i++) {
+    message_buff[i] = payload[i];
+  }
+  message_buff[i] = '\0';
+  
+  String msgString = String(message_buff);
+  Serial.println(msgString);
+  
+  if (msgString == "ON") {
+    ledGo = true;
+  } else {
+    ledGo = false;
+  }
+}
+
+// LED
+void ledCylon()
+{
+    // Effet cylon : on allume une led, on attends, on eteinds, on passe à la suivante
+    for(int i = 0; i < NUM_LEDS; i++) {
+      if ((i % 10) == 0) {
+          client.loop();
+      }
+      
+      leds[i] = CRGB::Red;
+      FastLED.show(); 
+      FastLED.delay(1000 / FRAMES_PER_SECOND); 
+      leds[i] = CRGB::Black;
+      FastLED.show(); 
+      FastLED.delay(1000 / FRAMES_PER_SECOND);
+    }
+    for(int i = NUM_LEDS - 1; i > 0; i--) {
+      if ((i % 10) == 0) {
+          client.loop();
+      }
+      
+      leds[i] = CRGB::Red;
+      FastLED.show(); 
+      FastLED.delay(1000 / FRAMES_PER_SECOND); 
+      leds[i] = CRGB::Black;
+      FastLED.show();
+    }
+    FastLED.delay(1000 / FRAMES_PER_SECOND);
+}
+
+void loop() {
+  // MQTT
+  testConnectMQTT();
+  client.loop();
+  
+  EVERY_N_SECONDS(180) {
+    Serial.print("MQTT Subscribe refresh");
+    client.subscribe("homeassistant/select1");
+    Serial.println(" done");
+  }
+  
+  // LED
+  if (ledGo) {
+    ledCylon();
+  } else {
+    fill_solid(leds, NUM_LEDS, CRGB::Black);
+    FastLED.show();
+    FastLED.delay(1000 / FRAMES_PER_SECOND);
+  }
+}