V2.0

Make mode changeable via MQTT and change overheating to enable temp of 25°C regardless the settemp.

Raumtermostat/src/MQTT.cpp

@@ -3,6 +3,7 @@
 
 WiFiUDP MQTT::udp;
 const char* MQTT::months[]={"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
+bool MQTT::forceStatusUpdate={false};
 
 AsyncWebServer* MQTT::server = new AsyncWebServer(80);
 AsyncWebSocket* MQTT::ws = new AsyncWebSocket("/ws");
@@ -130,14 +131,28 @@ void MQTT::saveConfigToFlash(void){
 
 void MQTT::receiveTopic(char* topic, byte* payload, unsigned int length) {
     String strTopic = String(topic);
-    if(topic == "weatherStation/tempAmb")
-        glblData.outTemp = String((char*)payload).toFloat();
+    if(strTopic.endsWith("/tempAmb")){
+        glblData.outTemp = String((char*)payload,length).toFloat();
+    }
     else if(strTopic.endsWith("/changeSetTemp")){
-        float newSetTemp = String((char*)payload).toFloat();
+        float newSetTemp = String((char*)payload,length).toFloat();
         if(newSetTemp >= 5.0 && newSetTemp <= 30.0){
             glblData.settemp = newSetTemp;
             ui_settemp(glblData.settemp);
+            forceStatusUpdate = true;
+            remoteLog("MQTT: new SetTemp received: ", newSetTemp);
         }
+    }else if(strTopic.endsWith("/changeMode")){
+        String strVal = String((char*)payload,length);
+        if(strVal.equalsIgnoreCase("overheating")){
+            glblData.override = OVR_ALWAYSON;
+        }else if(strVal.equalsIgnoreCase("frost-prevention")){
+            glblData.override = OVR_ALWAYSOFF;
+        }else{
+            glblData.override = OVR_NONE;
+        }
+        remoteLog("MQTT: ON mode received", strVal.c_str());
+        forceStatusUpdate = true;
     }
   }
 
@@ -149,8 +164,10 @@ void MQTT::reconnect(void) {
         psclient.subscribe("weatherStation/tempAmb");
         char newtopic[60];
         strcpy(newtopic,Settings::prefs.mqtt_topic);
-        strcat(newtopic,"/");
-        strcat(newtopic,"changeSetTemp");
+        strcat(newtopic,"/changeSetTemp");
+        psclient.subscribe(newtopic);
+        strcpy(newtopic,Settings::prefs.mqtt_topic);
+        strcat(newtopic,"/changeMode");
         psclient.subscribe(newtopic);
         Serial.println("connected");
         
@@ -163,6 +180,10 @@ void MQTT::reconnect(void) {
 void MQTT::loop(void){
     static uint32_t resetCnt = 0;
     unsigned long now = millis();
+    if(forceStatusUpdate){
+        forceStatusUpdate = false;
+        sendStatus();
+    }
     if(now-lastStatusUpdate > 15000){   //update wifi status every 15secs.
         lastStatusUpdate = now;
         if(WiFi.isConnected()){
@@ -362,6 +383,15 @@ void MQTT::sendStatus(void){
     publish_sub("Set Temp[degC]",buffer,true);
     snprintf(buffer, sizeof buffer, "%d", WiFi.RSSI());
     publish_sub("RSSI [dBm]",buffer,true);
+    if(glblData.override == OVR_ALWAYSON){
+        publish_sub("mode","Overheating",true); 
+    }else if(glblData.override == OVR_ALWAYSOFF){
+        publish_sub("mode","Frost-prevention",true); 
+    }else if(glblData.override == OVR_NONE){
+        publish_sub("mode","Normal",true); 
+    }else{
+        publish_sub("mode","Unknown",true); 
+    }
 
 }
 

Raumtermostat/src/MQTT.h

@@ -58,6 +58,7 @@ public:
    
 private:
     static const char* months[];
+    static bool forceStatusUpdate;
     static void serveData(AsyncWebServerRequest *request);
     //static void serveIndex(AsyncWebServerRequest *request);
     //static void serveCss(AsyncWebServerRequest *request);

Raumtermostat/src/ui/actions.cpp

@@ -29,13 +29,17 @@ void ui_settemp(float tmp) {
 void update_status(void) {
   static bool dotState = false;
   static unsigned long fullOnTime = millis();
+  override_t mode = glblData.override;
   if (glblData.enBuff) {
     lv_obj_remove_flag(objects.bufferIcn, LV_OBJ_FLAG_HIDDEN);
   } else {
+    if(mode == OVR_ALWAYSON) {
+      mode = OVR_NONE; // disable override if buffer is disabled
+    }
     lv_obj_add_flag(objects.bufferIcn, LV_OBJ_FLAG_HIDDEN);
   }
   
-  switch (glblData.override) {
+  switch (mode) {
   case OVR_NONE:
     lv_obj_set_style_text_color(objects.bufferIcn, lv_color_hex(0xFFfafafa),
                                 LV_STATE_DEFAULT);
@@ -48,7 +52,7 @@ void update_status(void) {
   case OVR_ALWAYSON:
     lv_obj_set_style_text_color(objects.bufferIcn, lv_color_hex(0xFF00AA00),
                                 LV_STATE_DEFAULT);
-    if (glblData.temp < glblData.settemp + 3.0) { // allow for 3degC overheating
+    if (glblData.temp < glblData.settemp + 3.0 || glblData.temp < 25) { // allow for 3degC overheating of up to 25°C regardless of settemp
       glblData.heating = true;
     } else {
       glblData.heating = false;