fix(v2c): correct logging category dcV2C + debian packaging + modbus.pri path

Build fixes found during first local compilation (qmake6 + g++ -Werror):

1. Logging category: nymea-plugininfocompiler generates 'dcV2C' (uppercase C)
   from the JSON vendor name "V2C". All three source files used 'dcV2c'
   (lowercase c) — corrected to 'dcV2C' in integrationpluginv2c.cpp,
   trydanmodbustcpmaster.cpp, v2ctcpdiscovery.cpp.

2. modbus.pri: hardcoded include(/usr/include/nymea-modbus/modbus-tool.pri)
   fails when libnymea-modbus-dev is not system-installed. Changed to a
   conditional: checks $$[QT_INSTALL_PREFIX] first, then NYMEA_MODBUS_PATH
   override, with a graceful fallback (warning + manual C++17 CONFIG flag).
   The v2c plugin has MODBUS_CONNECTIONS empty so the tool loop is a no-op
   either way; the fallback is safe.

3. debian/: add powersync-plugin-v2c package entry (control, .install,
   changelog entry 1.15.0+etm4).

Build verified: libnymea_integrationpluginv2c.so links against libnymea.so.1,
libnymea-modbus.so.1, Qt6Network/SerialBus/Core, 0 compiler warnings
(with -Werror -Wall -Wextra -std=c++17).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

debian/changelog

@@ -1,3 +1,16 @@
+etm-powersync-plugins-modbus (1.15.0+etm4) trixie; urgency=medium
+
+  * Ajout plugin V2C Trydan (borne de charge EV, Modbus TCP) : interface
+    evcharger complète — charge enable/disable (PauseState+Lock miroir),
+    consigne courant (Intensity), telemetrie (ChargePower, HousePower,
+    PowerFV, ChargeState IEC 61851). Gestion conflit Dynamic/PauseDynamic
+    sans ecriture du registre Dynamic (evite la coupure de telemetrie,
+    cf. evcc issue #28047). Decouverte LAN via HTTP /RealTimeData.
+    Transport abstrait (TCP Etape 1, RTU Etape 2 prevu).
+    Statut : Partiel — non teste sur borne reelle.
+
+ -- ETM-Schurig SARL <contact@etm-schurig.eu>  Thu, 12 Jun 2026 12:00:00 +0200
+
 etm-powersync-plugins-modbus (1.15.0+etm3) trixie; urgency=medium
 
   * Ajout plugin ABB Terra AC (borne de charge, Modbus TCP/RTU) : vendoring

debian/control

@@ -41,3 +41,15 @@ Depends: ${shlibs:Depends},
 Description: ABB Terra AC charging station (Modbus TCP/RTU) - vendored from upstream
  nymea integration plugin for ABB Terra AC wallbox over Modbus TCP or RTU.
  Vendored from nymea-plugins-modbus experimental-silo, pending upstream release.
+
+Package: powersync-plugin-v2c
+Architecture: any
+Section: libs
+Depends: ${shlibs:Depends},
+         ${misc:Depends},
+Description: PowerSync integration plugin for V2C Trydan EV charger (Modbus TCP)
+ nymea integration plugin for the V2C Trydan / Trydan Pro EV charger over
+ Modbus TCP (port 502), for use by the ETM PowerSync home energy management
+ system.  Implements the evcharger interface: charge enable/disable, current
+ setpoint, plugged-in / charging state, house and solar power telemetry.
+ Status: Partial — not yet validated on real hardware.

debian/powersync-plugin-v2c.install

@@ -0,0 +1 @@
+usr/lib/*/nymea/plugins/libnymea_integrationpluginv2c.so

modbus.pri

@@ -1,11 +1,22 @@
 QT += network serialport serialbus
 
-# libnymea-modbus depuis le paquet systeme (libnymea-modbus-dev), plus les sources locales
+# libnymea-modbus depuis le paquet systeme (libnymea-modbus-dev) ou via NYMEA_MODBUS_PATH.
 CONFIG += link_pkgconfig
 PKGCONFIG += nymea-modbus
 
 OTHER_FILES += $${MODBUS_CONNECTIONS}
 
-# Outil de generation des connexions modbus (sdm*-registers.json -> .cpp/.h),
-# fourni par libnymea-modbus-dev
-include(/usr/include/nymea-modbus/modbus-tool.pri)
+# Locate modbus-tool.pri: system install first, then NYMEA_MODBUS_PATH override
+# (for builds against a local libnymea-modbus source tree).
+# When MODBUS_CONNECTIONS is empty (e.g. v2c plugin), the tool's for-loop is a
+# no-op; we still need the file for the C++ standard CONFIG lines below.
+MODBUS_TOOL_PRI = $$[QT_INSTALL_PREFIX]/include/nymea-modbus/modbus-tool.pri
+!isEmpty(NYMEA_MODBUS_PATH): MODBUS_TOOL_PRI = $$NYMEA_MODBUS_PATH/modbus-tool.pri
+
+exists($$MODBUS_TOOL_PRI) {
+    include($$MODBUS_TOOL_PRI)
+} else {
+    warning("modbus-tool.pri not found at $$MODBUS_TOOL_PRI — MODBUS_CONNECTIONS code-gen disabled")
+    greaterThan(QT_MAJOR_VERSION, 5): CONFIG *= c++17
+    lessThan(QT_MAJOR_VERSION, 6):    CONFIG *= c++11
+}

v2c/integrationpluginv2c.cpp

@@ -279,7 +279,7 @@ void IntegrationPluginV2c::updateThingStates(Thing *thing, TrydanModbusMaster *m
     thing->setStateValue(trydanOptimizerSuspendedStateTypeId, master->pauseDynamic() == 1);
 
     if (conflict) {
-        qCDebug(dcV2c()) << thing->name()
+        qCDebug(dcV2C()) << thing->name()
                          << ": V2C internal optimizer is active (Dynamic==1). "
                             "HEMS will suppress it via PauseDynamic if suspendInternalOptimizer==true.";
     }
@@ -302,7 +302,7 @@ void IntegrationPluginV2c::handleDynamicConflict(Thing *thing, TrydanModbusMaste
 
     const bool suspendAllowed = thing->setting(trydanSettingsSuspendInternalOptimizerParamTypeId).toBool();
     if (!suspendAllowed) {
-        qCWarning(dcV2c()) << thing->name()
+        qCWarning(dcV2C()) << thing->name()
                            << ": V2C internal optimizer active but suspendInternalOptimizer==false. "
                               "HEMS and V2C PID may fight — expect oscillations.";
         return;
@@ -314,7 +314,7 @@ void IntegrationPluginV2c::handleDynamicConflict(Thing *thing, TrydanModbusMaste
 
     // Only write on transition to avoid unnecessary flash wear.
     if (master->pauseDynamic() != desired) {
-        qCDebug(dcV2c()) << thing->name()
+        qCDebug(dcV2C()) << thing->name()
                          << ": writing PauseDynamic =" << desired
                          << (hemsInControl ? "(HEMS taking control)" : "(releasing to V2C PID)");
         master->writePauseDynamic(static_cast<quint16>(desired));

v2c/trydanmodbustcpmaster.cpp

@@ -200,7 +200,7 @@ void TrydanModbusTcpMaster::doNextRead(QList<ReadStep> steps,
         static_cast<int>(m_slaveId));
 
     if (!reply) {
-        qCWarning(dcV2c()) << "TrydanModbusTcpMaster: sendReadRequest returned null for reg" << Qt::hex << address;
+        qCWarning(dcV2C()) << "TrydanModbusTcpMaster: sendReadRequest returned null for reg" << Qt::hex << address;
         onDone(false);
         return;
     }
@@ -210,7 +210,7 @@ void TrydanModbusTcpMaster::doNextRead(QList<ReadStep> steps,
         reply->deleteLater();
 
         if (reply->error() != QModbusDevice::NoError) {
-            qCWarning(dcV2c()) << "TrydanModbusTcpMaster: read error for reg"
+            qCWarning(dcV2C()) << "TrydanModbusTcpMaster: read error for reg"
                                << Qt::hex << steps.at(index).first
                                << ":" << reply->errorString();
             callback(false, 0, 0);
@@ -233,7 +233,7 @@ void TrydanModbusTcpMaster::writeFC6(quint16 address, quint16 value,
 
     QModbusReply *reply = m_modbusTcpMaster->sendWriteRequest(unit, static_cast<int>(m_slaveId));
     if (!reply) {
-        qCWarning(dcV2c()) << "TrydanModbusTcpMaster: sendWriteRequest returned null for reg" << Qt::hex << address;
+        qCWarning(dcV2C()) << "TrydanModbusTcpMaster: sendWriteRequest returned null for reg" << Qt::hex << address;
         callback(address, false);
         return;
     }
@@ -261,7 +261,7 @@ void TrydanModbusTcpMaster::handleError()
 {
     m_errorCount++;
     if (m_errorCount >= k_errorLimit) {
-        qCWarning(dcV2c()) << "TrydanModbusTcpMaster: error limit reached, marking unreachable";
+        qCWarning(dcV2C()) << "TrydanModbusTcpMaster: error limit reached, marking unreachable";
         setReachable(false);
     }
 }

v2c/v2ctcpdiscovery.cpp

@@ -19,7 +19,7 @@ V2cTcpDiscovery::V2cTcpDiscovery(NetworkDeviceDiscovery *networkDeviceDiscovery,
 
 void V2cTcpDiscovery::startDiscovery()
 {
-    qCInfo(dcV2c()) << "Discovery: searching for V2C Trydan chargers on the network...";
+    qCInfo(dcV2C()) << "Discovery: searching for V2C Trydan chargers on the network...";
     m_startTime         = QDateTime::currentDateTime();
     m_pendingProbes     = 0;
     m_scanFinished      = false;
@@ -84,7 +84,7 @@ void V2cTcpDiscovery::probeAddress(const QHostAddress &address)
                     info.setAddress(address);
                     result.networkDeviceInfo = info;
                 }
-                qCDebug(dcV2c()) << "Discovery: found V2C Trydan at" << address.toString();
+                qCDebug(dcV2C()) << "Discovery: found V2C Trydan at" << address.toString();
                 m_results.append(result);
             }
         }
@@ -103,7 +103,7 @@ void V2cTcpDiscovery::finishDiscovery()
     m_finished = true;
 
     const qint64 ms = QDateTime::currentMSecsSinceEpoch() - m_startTime.toMSecsSinceEpoch();
-    qCInfo(dcV2c()) << "Discovery: finished in"
+    qCInfo(dcV2C()) << "Discovery: finished in"
                     << QTime::fromMSecsSinceStartOfDay(static_cast<int>(ms)).toString("mm:ss.zzz")
                     << "with" << m_results.count() << "V2C Trydan(s) found.";
     emit discoveryFinished();