feat: added polling of min modulation and max boiler power; added sensor for current boiler power

src/HaHelper.h

@@ -872,6 +872,52 @@ public:
     return this->publish(this->getTopic(FPSTR(HA_ENTITY_BINARY_SENSOR), F("diagnostic")).c_str(), doc);
   }
 
+  bool publishSensorMaxPower(bool enabledByDefault = true) {
+    JsonDocument doc;
+    doc[FPSTR(HA_AVAILABILITY)][0][FPSTR(HA_TOPIC)] = this->getDeviceTopic(F("status"));
+    doc[FPSTR(HA_AVAILABILITY)][1][FPSTR(HA_TOPIC)] = this->getDeviceTopic(F("state"));
+    doc[FPSTR(HA_AVAILABILITY)][1][FPSTR(HA_VALUE_TEMPLATE)] = F("{{ iif(value_json.states.otStatus, 'online', 'offline') }}");
+    doc[FPSTR(HA_AVAILABILITY_MODE)] = F("all");
+    doc[FPSTR(HA_ENABLED_BY_DEFAULT)] = enabledByDefault;
+    doc[FPSTR(HA_UNIQUE_ID)] = this->getObjectId(F("max_power"));
+    doc[FPSTR(HA_OBJECT_ID)] = this->getObjectId(F("max_power"));
+    doc[FPSTR(HA_ENTITY_CATEGORY)] = F("diagnostic");
+    doc[FPSTR(HA_DEVICE_CLASS)] = F("power");
+    doc[FPSTR(HA_STATE_CLASS)] = F("measurement");
+    doc[FPSTR(HA_UNIT_OF_MEASUREMENT)] = F("kW");
+    doc[FPSTR(HA_NAME)] = F("Max power");
+    doc[FPSTR(HA_ICON)] = F("mdi:chart-bar");
+    doc[FPSTR(HA_STATE_TOPIC)] = this->getDeviceTopic(F("state"));
+    doc[FPSTR(HA_VALUE_TEMPLATE)] = F("{{ value_json.sensors.maxPower|float(0)|round(2) }}");
+    doc[FPSTR(HA_EXPIRE_AFTER)] = 120;
+    doc.shrinkToFit();
+
+    return this->publish(this->getTopic(FPSTR(HA_ENTITY_SENSOR), F("max_power")).c_str(), doc);
+  }
+
+  bool publishSensorCurrentPower(bool enabledByDefault = true) {
+    JsonDocument doc;
+    doc[FPSTR(HA_AVAILABILITY)][0][FPSTR(HA_TOPIC)] = this->getDeviceTopic(F("status"));
+    doc[FPSTR(HA_AVAILABILITY)][1][FPSTR(HA_TOPIC)] = this->getDeviceTopic(F("state"));
+    doc[FPSTR(HA_AVAILABILITY)][1][FPSTR(HA_VALUE_TEMPLATE)] = F("{{ iif(value_json.states.otStatus, 'online', 'offline') }}");
+    doc[FPSTR(HA_AVAILABILITY_MODE)] = F("all");
+    doc[FPSTR(HA_ENABLED_BY_DEFAULT)] = enabledByDefault;
+    doc[FPSTR(HA_UNIQUE_ID)] = this->getObjectId(F("current_power"));
+    doc[FPSTR(HA_OBJECT_ID)] = this->getObjectId(F("current_power"));
+    doc[FPSTR(HA_ENTITY_CATEGORY)] = F("diagnostic");
+    doc[FPSTR(HA_DEVICE_CLASS)] = F("power");
+    doc[FPSTR(HA_STATE_CLASS)] = F("measurement");
+    doc[FPSTR(HA_UNIT_OF_MEASUREMENT)] = F("kW");
+    doc[FPSTR(HA_NAME)] = F("Current power");
+    doc[FPSTR(HA_ICON)] = F("mdi:chart-bar");
+    doc[FPSTR(HA_STATE_TOPIC)] = this->getDeviceTopic(F("state"));
+    doc[FPSTR(HA_VALUE_TEMPLATE)] = F("{{ value_json.sensors.currentPower|float(0)|round(2) }}");
+    doc[FPSTR(HA_EXPIRE_AFTER)] = 120;
+    doc.shrinkToFit();
+
+    return this->publish(this->getTopic(FPSTR(HA_ENTITY_SENSOR), F("current_power")).c_str(), doc);
+  }
+
   bool publishSensorFaultCode(bool enabledByDefault = true) {
     JsonDocument doc;
     doc[FPSTR(HA_AVAILABILITY)][0][FPSTR(HA_TOPIC)] = this->getDeviceTopic(F("status"));

src/MqttTask.h

@@ -357,6 +357,8 @@ protected:
     // sensors
     this->haHelper->publishSensorModulation(false);
     this->haHelper->publishSensorPressure(settings.system.unitSystem, false);
+    this->haHelper->publishSensorMaxPower(false);
+    this->haHelper->publishSensorCurrentPower();
     this->haHelper->publishSensorFaultCode();
     this->haHelper->publishSensorDiagnosticCode();
     this->haHelper->publishSensorRssi(false);

src/OpenThermTask.h

@@ -253,6 +253,19 @@ protected:
 
     // These parameters will be updated every minute
     if (millis() - this->prevUpdateNonEssentialVars > 60000) {
+      if (this->updateMinModulationLevel()) {
+        Log.straceln(FPSTR(L_OT), F("Min modulation: %u%%, boiler max power: %u kW"), vars.parameters.minModulation, vars.sensors.maxPower);
+        
+        if (vars.parameters.minModulation > settings.heating.maxModulation) {
+          settings.heating.maxModulation = vars.parameters.minModulation;
+          fsSettings.update();
+          Log.snoticeln(FPSTR(L_OT_DHW), F("Updated min modulation: %hhu"), settings.heating.maxModulation);
+        }
+
+      } else {
+        Log.swarningln(FPSTR(L_OT), F("Failed get min modulation & max power"));
+      }
+
       if (!heatingEnabled && settings.opentherm.modulationSyncWithHeating) {
         if (this->setMaxModulationLevel(0)) {
           Log.snoticeln(FPSTR(L_OT_HEATING), F("Set max modulation 0% (off)"));
@@ -363,11 +376,22 @@ protected:
 
 
     // Get current modulation level (if necessary)
-    if (vars.states.flame) {
+    if (vars.states.flame && this->updateModulationLevel()) {
-      this->updateModulationLevel();
+      vars.sensors.currentPower = vars.sensors.maxPower > 0
+        ? vars.sensors.maxPower * (vars.sensors.modulation / 100)
+        : 0;
+      
+      Log.sverboseln(
+        FPSTR(L_OT_DHW),
+        F("Current modulation level: %.2f%%, power: %.2f of %hhu kW"),
+        vars.sensors.modulation,
+        vars.sensors.currentPower,
+        vars.sensors.maxPower
+      );
 
     } else {
       vars.sensors.modulation = 0;
+      vars.sensors.currentPower = 0;
     }
 
     // Update DHW sensors (if necessary)
@@ -1045,6 +1069,26 @@ protected:
     return true;
   }
 
+  bool updateMinModulationLevel() {
+    unsigned long response = this->instance->sendRequest(CustomOpenTherm::buildRequest(
+      OpenThermRequestType::READ_DATA,
+      OpenThermMessageID::MaxCapacityMinModLevel,
+      0
+    ));
+
+    if (!CustomOpenTherm::isValidResponse(response)) {
+      return false;
+    }
+
+    byte minModulation = response & 0xFF;
+    byte maxPower = (response & 0xFFFF) >> 8;
+
+    vars.parameters.minModulation = minModulation;
+    vars.sensors.maxPower = maxPower;
+
+    return true;
+  }
+
   bool updatePressure() {
     unsigned long response = this->instance->sendRequest(CustomOpenTherm::buildRequest(
       OpenThermRequestType::READ_DATA,

src/Settings.h

@@ -174,6 +174,8 @@ struct Variables {
     float modulation = 0.0f;
     float pressure = 0.0f;
     float dhwFlowRate = 0.0f;
+    byte maxPower = 0;
+    float currentPower = 0.0f;
     byte faultCode = 0;
     unsigned short diagnosticCode = 0;
     int8_t rssi = 0;
@@ -210,6 +212,7 @@ struct Variables {
     unsigned long extPumpLastEnableTime = 0;
     byte dhwMinTemp = DEFAULT_DHW_MIN_TEMP;
     byte dhwMaxTemp = DEFAULT_DHW_MAX_TEMP;
+    byte minModulation = 0;
     byte maxModulation = 0;
     uint8_t slaveMemberId = 0;
     uint8_t slaveFlags = 0;

src/utils.h

@@ -1546,6 +1546,8 @@ void varsToJson(const Variables& src, JsonVariant dst) {
   dst["sensors"]["modulation"] = roundd(src.sensors.modulation, 2);
   dst["sensors"]["pressure"] = roundd(src.sensors.pressure, 2);
   dst["sensors"]["dhwFlowRate"] = roundd(src.sensors.dhwFlowRate, 2);
+  dst["sensors"]["maxPower"] = src.sensors.maxPower;
+  dst["sensors"]["currentPower"] = roundd(src.sensors.currentPower, 2);
   dst["sensors"]["faultCode"] = src.sensors.faultCode;
   dst["sensors"]["diagnosticCode"] = src.sensors.diagnosticCode;
   dst["sensors"]["rssi"] = src.sensors.rssi;

src_data/locales/en.json

@@ -9,6 +9,7 @@
       "releases": "Releases"
     },
     "dbm": "dBm",
+    "kw": "kW",
 
     "button": {
       "upgrade": "Upgrade",
@@ -99,6 +100,8 @@
         "modulation": "Modulation",
         "pressure": "Pressure",
         "dhwFlowRate": "DHW flow rate",
+        "maxPower": "Max power",
+        "currentPower": "Current power",
         "faultCode": "Fault code",
         "diagCode": "Diagnostic code",
         "indoorTemp": "Indoor temp",

src_data/locales/ru.json

@@ -9,6 +9,7 @@
       "releases": "Релизы"
     },
     "dbm": "дБм",
+    "kw": "кВт",
 
     "button": {
       "upgrade": "Обновить",
@@ -99,6 +100,8 @@
         "modulation": "Уровень модуляции",
         "pressure": "Давление",
         "dhwFlowRate": "Расход ГВС",
+        "maxPower": "Макс. мощность",
+        "currentPower": "Текущая мощность",
         "faultCode": "Код ошибки",
         "diagCode": "Диагностический код",
         "indoorTemp": "Внутренняя темп.",

src_data/pages/dashboard.html

@@ -158,6 +158,14 @@
                   <th scope="row" data-i18n>dashboard.state.dhwFlowRate</th>
                   <td><b id="ot-dhw-flow-rate"></b> <span class="volume-unit"></span>/min</td>
                 </tr>
+                <tr>
+                  <th scope="row" data-i18n>dashboard.state.maxPower</th>
+                  <td><b id="ot-max-power"></b> <span data-i18n>kw</span></td>
+                </tr>
+                <tr>
+                  <th scope="row" data-i18n>dashboard.state.currentPower</th>
+                  <td><b id="ot-current-power"></b> <span data-i18n>kw</span></td>
+                </tr>
                 <tr>
                   <th scope="row" data-i18n>dashboard.state.faultCode</th>
                   <td><b id="ot-fault-code"></b></td>
@@ -434,6 +442,8 @@
             setValue('#ot-modulation', result.sensors.modulation);
             setValue('#ot-pressure', result.sensors.pressure);
             setValue('#ot-dhw-flow-rate', result.sensors.dhwFlowRate);
+            setValue('#ot-max-power', result.sensors.maxPower);
+            setValue('#ot-current-power', result.sensors.currentPower);
             setValue(
               '#ot-fault-code',
               result.sensors.faultCode