Controle d'une LED au travers de Home Assistant
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  1. #include <Arduino.h>
  2. #include "mqttled.h"
  3. // C'est moche mais c'est pour récuperer EVERY_N_SECONDS :)
  4. #include <FastLED.h>
  5. #include <ESP8266WiFi.h>
  6. #include <PubSubClient.h>
  7. // WIFI
  8. WiFiClient espClient;
  9. // MQTT
  10. char message_buff[100];
  11. PubSubClient client(espClient);
  12. void setup() {
  13. Serial.begin(SERIAL_SPEED);
  14. Serial.println("\nresetting");
  15. // WIFI
  16. setupWifi();
  17. // MQTT
  18. client.setServer(mqtt_server, mqtt_port);
  19. client.setCallback(callbackMQTT);
  20. testConnectMQTT();
  21. client.subscribe("homeassistant/switch1");
  22. pinMode(LED_PIN, OUTPUT);
  23. }
  24. // WIFI
  25. void setupWifi() {
  26. Serial.println();
  27. Serial.print("Connexion a ");
  28. Serial.print(wifi_ssid);
  29. WiFi.begin(wifi_ssid, wifi_password);
  30. while (WiFi.status() != WL_CONNECTED) {
  31. delay(500);
  32. Serial.print(".");
  33. }
  34. Serial.println();
  35. Serial.print("IP : ");
  36. Serial.println(WiFi.localIP());
  37. }
  38. // MQTT
  39. void testConnectMQTT() {
  40. while (!client.connected()) {
  41. Serial.print("Connexion au serveur MQTT... ");
  42. if (client.connect("ESP8266Client", mqtt_user, mqtt_password)) {
  43. Serial.println("OK");
  44. } else {
  45. Serial.print("KO, erreur : ");
  46. Serial.print(client.state());
  47. Serial.println(", on attend 5 secondes avant de recommencer");
  48. delay(5000);
  49. }
  50. }
  51. }
  52. void callbackMQTT(char* topic, byte* payload, unsigned int length) {
  53. unsigned int i = 0;
  54. Serial.print("Received [" + String(topic) + "] : ");
  55. for(i = 0; i < length; i++) {
  56. message_buff[i] = payload[i];
  57. }
  58. message_buff[i] = '\0';
  59. String msgString = String(message_buff);
  60. Serial.print(msgString);
  61. if (msgString == "ON") {
  62. digitalWrite(LED_PIN, HIGH);
  63. } else {
  64. digitalWrite(LED_PIN, LOW);
  65. }
  66. }
  67. void loop() {
  68. testConnectMQTT();
  69. client.loop();
  70. EVERY_N_SECONDS(180) {
  71. Serial.print("MQTT Subscribe refresh");
  72. client.subscribe("homeassistant/select1");
  73. Serial.println(" done");
  74. }
  75. }