MQTT implementation. MQTT message sends only when there is a data update. Also update conf in Homeassistant

linky_tic.ino

@@ -19,6 +19,10 @@ ESP8266WebServer server(HTTP_PORT);
 WiFiClient espClient;
 PubSubClient mqttclient(espClient);
 
+unsigned long previousMillis = 0;
+unsigned long previousForceMillis = 0;
+const long interval = 1000;
+
 void mqttConnect() {
   // Loop until we're reconnected
   while (!mqttclient.connected()) {
@@ -165,15 +169,32 @@ void loop() {
   server.handleClient();
   readTicPort();
 
+  unsigned long currentMillis = millis();
+
+  if (currentMillis - previousMillis >= interval) {
+    // save the last time you blinked the LED
+    previousMillis = currentMillis;
 
     //Interface MQTT
     if (!mqttclient.connected()) {
       mqttConnect();
     }
 
-  //mqttPublish(&mqttclient);
-  mqttclient.loop();
+    mqttPublish(&mqttclient);
+  }
 
+    if (currentMillis - previousForceMillis >= (30*interval)) {
+    // save the last time you blinked the LED
+    previousForceMillis = currentMillis;
+
+    //Interface MQTT
+    if (!mqttclient.connected()) {
+      mqttConnect();
+    }
+
+    mqttForcePublish(&mqttclient);
+  }
+  mqttclient.loop();
 
   /*
       // Si aucune requête n'est en cours, mettre l'ESP8266 en mode deep sleep

tic.cpp

@@ -116,6 +116,21 @@ static void processTrame(String &data) {
       }
       // If a match is found, update the corresponding TicValues entry
       if (t < NB_ETIQUETTE) {
+        //If there is a value update
+        if (TicValues[t].value.compareTo(gd.value) != 0) {
+          //There is some noise on instantaneous value, filter
+          if (SelectedEtiquette[t] == "SINSTS" || SelectedEtiquette[t] == "SINSTS1" || SelectedEtiquette[t] == "SINSTS2" || SelectedEtiquette[t] == "SINSTS3") {
+            int oldval  = TicValues[t].value.toInt();
+            int newcal = (gd.value.toInt() + oldval) / 2;
+            if (newcal < oldval*0.92 || newcal > oldval*1.02){
+            gd.updated = true;
+            TicValues[t] = gd;
+            }
+            else {
+              TicValues[t].value = String(newcal);
+            }
+          } else {
+            gd.updated = true;
             TicValues[t] = gd;
             // Depending on the group name, call the appropriate processing function
             if (gd.name == "STGE") {
@@ -126,6 +141,10 @@ static void processTrame(String &data) {
               processActionsCalendrier(gd.value);
             }
           }
+        } else {
+          TicValues[t].updated = false;
+        }
+      }
       data = data.substring(index + 1);
     }
   }
@@ -317,15 +336,25 @@ String ticBasicValuesAsJson() {
 
 void mqttPublish(PubSubClient *mqttclient) {
   for (int i = 0; i < NB_ETIQUETTE; ++i) {
-    if (SelectedEtiquette[i] == "LTARF" || SelectedEtiquette[i] == "EAST" || SelectedEtiquette[i] == "EASF01" || SelectedEtiquette[i] == "EASF02" || SelectedEtiquette[i] == "EASF03" || SelectedEtiquette[i] == "EASF04" || SelectedEtiquette[i] == "EASD01" || SelectedEtiquette[i] == "EASD02" || SelectedEtiquette[i] == "EASD03" || SelectedEtiquette[i] == "EASD04" || SelectedEtiquette[i] == "EAIT" || SelectedEtiquette[i] == "ERQ1" || SelectedEtiquette[i] == "ERQ2" || SelectedEtiquette[i] == "ERQ3" || SelectedEtiquette[i] == "ERQ4" || SelectedEtiquette[i] == "IRMS1" || SelectedEtiquette[i] == "IRMS2" || SelectedEtiquette[i] == "IRMS3" || SelectedEtiquette[i] == "URMS1" || SelectedEtiquette[i] == "URMS2" || SelectedEtiquette[i] == "URMS3" || SelectedEtiquette[i] == "SINSTS" || SelectedEtiquette[i] == "SINSTSI" || SelectedEtiquette[i] == "SINSTS1" || SelectedEtiquette[i] == "SINSTS2" || SelectedEtiquette[i] == "SINSTS3" || SelectedEtiquette[i] == "SINSTSI") {
+    if (TicValues[i].updated) {
       String topic = MQTT_TOPIC;
       topic += "/",
         topic += SelectedEtiquette[i];
       mqttclient->publish(topic.c_str(), TicValues[i].value.c_str());
+      TicValues[i].updated = false;
     }
   }
 }
 
+void mqttForcePublish(PubSubClient *mqttclient) {
+  for (int i = 0; i < NB_ETIQUETTE; ++i) {
+    String topic = MQTT_TOPIC;
+    topic += "/",
+      topic += SelectedEtiquette[i];
+    mqttclient->publish(topic.c_str(), TicValues[i].value.c_str());
+  }
+}
+
 /**
  * Reads data from the TicPort and processes it according to specific control characters.
  *

tic.h

@@ -32,6 +32,7 @@ struct GroupDetail {
   String name;      // Nom de l'étiquette
   String value;     // Valeur associée à l'étiquette
   String horodate;  // Horodatage de la valeur
+  bool updated;
 };
 
 // Structure pour les bits de statut du registre
@@ -161,4 +162,5 @@ void readTicPort();
 String ticValuesAsJson();
 String ticBasicValuesAsJson();
 void mqttPublish(PubSubClient *mqttclient);
+void mqttForcePublish(PubSubClient *mqttclient); 
 #endif