Add solar charge controller integration and firmware

App:
- New DeviceRole.solar with its own BLE session/protocol/state
  (SolarSession, VanAlignSolarProtocol, SolarState), mirroring the
  leveling sensor but deliberately not wired into the Live Activity.
- BluetoothManager now keeps an in-memory history per metric (voltage,
  current, power) instead of a single primary-metric series; cleared on
  app restart by design, not persisted to disk.
- DeviceDetailView shows a channel picker above the history chart when a
  device has more than one chartable metric.
- AddDeviceView recognizes the solar service UUID during setup.
- DemoData gets a simulated solar device so the integration can be
  checked in the simulator without hardware.

Firmware:
- Add esp32_ble_solar.yaml (Votronic solar charge controller over BLE)
  and simulated variants (esp32_ble_sim.yaml, esp32_ble_solar_sim.yaml)
  for testing without a vehicle.
- esp32_ble.yaml: set flash_size/psram for the ESP32-S3 N16R8 module.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

CamperMonitor/Bluetooth/BluetoothManager.swift

@@ -17,6 +17,8 @@ struct Discovery: Identifiable, Hashable {
     var looksLikeSupported: Bool
     /// Der Neigungsmesser bewirbt seinen Dienst, ist also sicher erkennbar.
     var isLevelSensor = false
+    /// Der Solarladeregler bewirbt seinen Dienst ebenso.
+    var isSolarSensor = false
 
     //var isVictron: Bool { victronRecordType != nil }
 
@@ -31,6 +33,7 @@ struct Discovery: Identifiable, Hashable {
 
     var subtitle: String {
         if isLevelSensor { return "VanAlign Neigungsmesser" }
+        if isSolarSensor { return "VanAlign Solarladeregler" }
         return "Bluetooth-Gerät"
     }
     /*var subtitle: String {
@@ -125,6 +128,12 @@ struct HistorySample: Identifiable, Hashable {
     let value: Double
 }
 
+/// Verlauf mehrerer Messgrössen eines Geräts, je Metrik-Schlüssel (siehe
+/// `Metric.key`). Nur im Arbeitsspeicher: Sinn ist die Grafik während der
+/// laufenden App-Sitzung, nicht ein dauerhaftes Log – ein Neustart der App
+/// oder das Beenden im Hintergrund darf den Verlauf also verwerfen.
+typealias DeviceHistory = [String: [HistorySample]]
+
 /// Zentrale Bluetooth-Schicht: scannt dauerhaft nach Geräten und hält
 /// parallel die Verbindung zum Neigungsmesser.
 ///
@@ -150,11 +159,12 @@ final class BluetoothManager: NSObject {
     private(set) var snapshots: [UUID: DeviceSnapshot] = [:]
     private(set) var linkStates: [UUID: DeviceLinkState] = [:]
     private(set) var discoveries: [UUID: Discovery] = [:]
-    private(set) var history: [UUID: [HistorySample]] = [:]
+    private(set) var history: [UUID: DeviceHistory] = [:]
     //private(set) var diagnostics: [UUID: VictronDiagnostics] = [:]
     //private(set) var bmsDiagnostics: [UUID: BMSDiagnostics] = [:]
     //private(set) var fridgeStates: [UUID: AlpicoolState] = [:]
     private(set) var levelStates: [UUID: LevelState] = [:]
+    private(set) var solarStates: [UUID: SolarState] = [:]
     private(set) var isBluetoothReady = false
     private(set) var bluetoothStatusText = "Bluetooth wird gestartet…"
 
@@ -191,6 +201,7 @@ final class BluetoothManager: NSObject {
 
     //private var bmsSessions: [UUID: BMSSession] = [:]
     private var levelSessions: [UUID: LevelSession] = [:]
+    private var solarSessions: [UUID: SolarSession] = [:]
     private var connectedPeripherals: [UUID: CBPeripheral] = [:]
     private var reconnectTimer: DispatchSourceTimer?
 
@@ -269,6 +280,11 @@ final class BluetoothManager: NSObject {
         bluetoothStatusText = "Demo-Modus"
         //fridgeStates[DemoData.fridge.id] = DemoData.fridgeState
         levelStates[DemoData.level.id] = DemoData.levelState
+
+        solarStates[DemoData.solar.id] = DemoData.solarState
+        linkStates[DemoData.solar.id] = .live
+        record(DemoData.solarState.snapshot(deviceID: DemoData.solar.id, rssi: -58))
+        history[DemoData.solar.id] = DemoData.solarHistory()
       /*  for snapshot in DemoData.snapshots() {
             snapshots[snapshot.deviceID] = snapshot
             linkStates[snapshot.deviceID] = .live
@@ -326,6 +342,7 @@ final class BluetoothManager: NSObject {
         //bmsDiagnostics = bmsDiagnostics.filter { known.contains($0.key) }
         //fridgeStates = fridgeStates.filter { known.contains($0.key) }
         levelStates = levelStates.filter { known.contains($0.key) }
+        solarStates = solarStates.filter { known.contains($0.key) }
 
         // Geräte, die nur auf Anforderung verbunden werden, zeigen bis dahin
         // ihren zuletzt gestellten Stand.
@@ -535,6 +552,11 @@ final class BluetoothManager: NSObject {
             levelSessions[peripheralID] = nil
             disconnect(peripheralID)
         }
+        for (peripheralID, session) in solarSessions where !wanted.contains(peripheralID) {
+            session.stop()
+            solarSessions[peripheralID] = nil
+            disconnect(peripheralID)
+        }
         // Einstellungen an bestehende Sitzungen weiterreichen.
         for device in devices {
             //bmsSessions[device.peripheralID]?.fridgeZoneMode = device.fridgeZoneMode
@@ -580,9 +602,11 @@ final class BluetoothManager: NSObject {
         discoveryFlushTimer?.cancel(); discoveryFlushTimer = nil
         //for (_, session) in bmsSessions { session.stop() }
         for (_, session) in levelSessions { session.stop() }
+        for (_, session) in solarSessions { session.stop() }
         for (_, peripheral) in connectedPeripherals { central?.cancelPeripheralConnection(peripheral) }
         //bmsSessions.removeAll()
         levelSessions.removeAll()
+        solarSessions.removeAll()
         connectedPeripherals.removeAll()
         connectedSince.removeAll()
         //pendingControls.removeAll()
@@ -692,15 +716,20 @@ final class BluetoothManager: NSObject {
     private func record(_ snapshot: DeviceSnapshot) {
         publish {
             self.snapshots[snapshot.deviceID] = snapshot
-            guard let primary = snapshot.primaryMetric, let value = primary.value else { return }
+            var deviceHistory = self.history[snapshot.deviceID] ?? [:]
-            var samples = self.history[snapshot.deviceID] ?? []
+            for metric in snapshot.metrics {
-            // Höchstens alle fünf Sekunden einen Punkt aufnehmen.
+                guard let value = metric.value else { continue }
-            if let last = samples.last, snapshot.timestamp.timeIntervalSince(last.time) < 5 { return }
+                var samples = deviceHistory[metric.key] ?? []
-            samples.append(HistorySample(time: snapshot.timestamp, value: value))
+                // Höchstens alle fünf Sekunden einen Punkt aufnehmen.
-            if samples.count > self.historyLimit {
+                if let last = samples.last,
-                samples.removeFirst(samples.count - self.historyLimit)
+                   snapshot.timestamp.timeIntervalSince(last.time) < 5 { continue }
+                samples.append(HistorySample(time: snapshot.timestamp, value: value))
+                if samples.count > self.historyLimit {
+                    samples.removeFirst(samples.count - self.historyLimit)
+                }
+                deviceHistory[metric.key] = samples
             }
-            self.history[snapshot.deviceID] = samples
+            self.history[snapshot.deviceID] = deviceHistory
         }
     }
 
@@ -773,7 +802,8 @@ final class BluetoothManager: NSObject {
         if let name, !name.isEmpty { entry.name = name }
         let services = advertisementData[CBAdvertisementDataServiceUUIDsKey] as? [CBUUID] ?? []
         entry.isLevelSensor = services.contains(LevelSession.serviceUUID)
-        entry.looksLikeSupported = entry.isLevelSensor
+        entry.isSolarSensor = services.contains(SolarSession.serviceUUID)
+        entry.looksLikeSupported = entry.isLevelSensor || entry.isSolarSensor
         pendingDiscoveries[peripheral.identifier] = entry
     }
     /*private func updateDiscovery(peripheral: CBPeripheral,
@@ -917,6 +947,27 @@ extension BluetoothManager: CBCentralManagerDelegate {
             return
         }
 
+        if device.role == .solar {
+            // Bewusst kein Draht zu `activityManager`: Der Solarertrag soll
+            // nicht in der Live Activity/CarPlay auftauchen, die ist dem
+            // Neigungsmesser vorbehalten.
+            let session = SolarSession(
+                deviceID: device.id,
+                peripheral: peripheral,
+                queue: queue,
+                onUpdate: { [weak self] snapshot in self?.record(snapshot) },
+                onStateChange: { [weak self] state in
+                    self?.publish { self?.linkStates[device.id] = state }
+                },
+                onSolarState: { [weak self] state in
+                    self?.publish { self?.solarStates[device.id] = state }
+                }
+            )
+            solarSessions[peripheral.identifier] = session
+            session.start()
+            return
+        }
+
         /*let session = BMSSession(
             deviceID: device.id,
             peripheral: peripheral,
@@ -964,6 +1015,8 @@ extension BluetoothManager: CBCentralManagerDelegate {
         //bmsSessions[peripheral.identifier] = nil
         levelSessions[peripheral.identifier]?.handleDisconnect()
         levelSessions[peripheral.identifier] = nil
+        solarSessions[peripheral.identifier]?.handleDisconnect()
+        solarSessions[peripheral.identifier] = nil
         connectedPeripherals[peripheral.identifier] = nil
 
         let lifetime = connectedSince.removeValue(forKey: peripheral.identifier)

CamperMonitor/Store/DemoData.swift

@@ -59,8 +59,47 @@ enum DemoData {
         name: "Nivellierung", role: .leveling, profileID: Profile.defaultID,
         peripheralID: UUID(uuidString: "00000000-0000-0000-0000-0000000000E1")!)
 
+    static let solar = ConfiguredDevice(
+        id: UUID(uuidString: "00000000-0000-0000-0000-0000000000D0")!,
+        name: "Solar Dach", role: .solar, profileID: Profile.defaultID,
+        peripheralID: UUID(uuidString: "00000000-0000-0000-0000-0000000000D1")!)
+
     static var devices: [ConfiguredDevice] {
-        [/*solar, booster, battery, fridge, */level/*, caravanSolar*/]
+        [/*booster, battery, fridge, */level, solar/*, caravanSolar*/]
+    }
+
+    /// Mittags, gute Sonne.
+    static var solarState: SolarState {
+        var state = SolarState()
+        state.batteryVoltage = 13.9
+        state.pvVoltage = 19.4
+        state.pvCurrent = 6.2
+        state.pvPower = 120
+        state.controllerTemperature = 34
+        state.isBatteryCharging = true
+        state.isControllerActive = true
+        state.isCurrentLimited = false
+        return state
+    }
+
+    /// Ein paar Stunden Verlauf je Kanal, damit die Grafik im Demo-Modus
+    /// sofort etwas zeigt statt erst nach ein paar Minuten Laufzeit.
+    static func solarHistory() -> DeviceHistory {
+        let now = Date()
+        func series(around value: Double, noise: Double) -> [HistorySample] {
+            (0..<120).reversed().map { step in
+                let t = Double(step)
+                let wave = sin(t / 14) * value * noise + cos(t / 31) * value * (noise / 2)
+                return HistorySample(time: now.addingTimeInterval(-t * 60),
+                                     value: max(0, value + wave))
+            }
+        }
+        return [
+            "pv_power": series(around: 120, noise: 0.35),
+            "pv_voltage": series(around: 19.4, noise: 0.08),
+            "pv_current": series(around: 6.2, noise: 0.3),
+            "battery_voltage": series(around: 13.9, noise: 0.03),
+        ]
     }
 
     /// Leicht schräg stehend, damit die Libelle etwas zu zeigen hat.

CamperMonitor/Views/AddDeviceView.swift

@@ -195,6 +195,8 @@ private struct ConfigureDeviceView: View {
             }
         } else*/ if discovery.isLevelSensor {
             role = .leveling
+        } else if discovery.isSolarSensor {
+            role = .solar
         } /*else if let name = discovery.name?.lowercased(),
                   ["alpicool", "icecube", "ice cube", "fridge", "cool"].contains(where: name.contains) {
             role = .fridge
@@ -206,6 +208,8 @@ private struct ConfigureDeviceView: View {
         // ohnehin darüber unter "Gefunden als".
         if discovery.isLevelSensor {
             name = "Nivellierung"
+        } else if discovery.isSolarSensor {
+            name = "Solarladeregler"
         } else if let advertised = discovery.name, advertised.count <= 20,
            advertised.contains(" ") || advertised.rangeOfCharacter(from: .decimalDigits) == nil {
             name = advertised

CamperMonitor/Views/DeviceDetailView.swift

@@ -35,9 +35,31 @@ struct DeviceDetailView: View {
         store.devices.first { $0.id == device.id } ?? device
     }
 
+    /// Nur solange die App läuft: siehe `DeviceHistory`.
+    @State private var selectedHistoryMetricKey: String?
+
     private var snapshot: DeviceSnapshot? { bluetooth.snapshots[device.id] }
     private var linkState: DeviceLinkState { bluetooth.linkStates[device.id] ?? .searching }
-    private var samples: [HistorySample] { bluetooth.history[device.id] ?? [] }
+    private var deviceHistory: DeviceHistory { bluetooth.history[device.id] ?? [:] }
+
+    /// Nur Metriken, zu denen sich bereits ein Verlauf mit mehr als einem
+    /// Punkt angesammelt hat – sonst gäbe es nichts zu zeichnen.
+    private var chartableMetrics: [Metric] {
+        (snapshot?.metrics ?? []).filter { (deviceHistory[$0.key]?.count ?? 0) > 1 }
+    }
+
+    private var selectedMetric: Metric? {
+        if let key = selectedHistoryMetricKey,
+           let metric = chartableMetrics.first(where: { $0.key == key }) {
+            return metric
+        }
+        return chartableMetrics.first(where: \.isPrimary) ?? chartableMetrics.first
+    }
+
+    private var samples: [HistorySample] {
+        guard let selectedMetric else { return [] }
+        return deviceHistory[selectedMetric.key] ?? []
+    }
 
     var body: some View {
         List {
@@ -65,20 +87,38 @@ struct DeviceDetailView: View {
                 }
             }
 
-            if samples.count > 1, let primary = snapshot?.primaryMetric {
+            if let metric = selectedMetric, samples.count > 1 {
-                Section("Verlauf – \(primary.label)") {
+                Section {
+                    if chartableMetrics.count > 1 {
+                        Picker("Messgrösse", selection: Binding(
+                            get: { metric.key },
+                            set: { selectedHistoryMetricKey = $0 }
+                        )) {
+                            ForEach(chartableMetrics) { candidate in
+                                Text(candidate.label).tag(candidate.key)
+                            }
+                        }
+                        .pickerStyle(.segmented)
+                        .listRowInsets(EdgeInsets())
+                        .padding(.horizontal)
+                        .padding(.top, 4)
+                    }
                     Chart(samples) { sample in
                         AreaMark(x: .value("Zeit", sample.time),
-                                 y: .value(primary.label, sample.value))
+                                 y: .value(metric.label, sample.value))
                         .foregroundStyle(.tint.opacity(0.15))
                         LineMark(x: .value("Zeit", sample.time),
-                                 y: .value(primary.label, sample.value))
+                                 y: .value(metric.label, sample.value))
                         .foregroundStyle(.tint)
                         .interpolationMethod(.monotone)
                     }
-                    .chartYAxisLabel(primary.unit)
+                    .chartYAxisLabel(metric.unit)
                     .frame(height: 180)
                     .padding(.vertical, 8)
+                } header: {
+                    Text("Verlauf – \(metric.label)")
+                } footer: {
+                    Text("Nur für die laufende Sitzung – wird beim Neustart der App verworfen.")
                 }
             }
 

Shared/Bluetooth/SolarSession.swift

@@ -0,0 +1,160 @@
+import CoreBluetooth
+import Foundation
+
+/// Hält die Verbindung zum Solarladeregler.
+///
+/// Einfacher noch als `LevelSession`: die Firmware bietet für keine
+/// Charakteristik `notify` an (siehe `esp32_ble_solar.yaml`), es wird also
+/// immer im Takt abgefragt statt abonniert.
+final class SolarSession: NSObject {
+
+    static let serviceUUID = CBUUID(string: VanAlignSolarProtocol.serviceUUID)
+    private static let batteryVoltageUUID = CBUUID(string: VanAlignSolarProtocol.batteryVoltageUUID)
+    private static let pvVoltageUUID = CBUUID(string: VanAlignSolarProtocol.pvVoltageUUID)
+    private static let pvCurrentUUID = CBUUID(string: VanAlignSolarProtocol.pvCurrentUUID)
+    private static let pvPowerUUID = CBUUID(string: VanAlignSolarProtocol.pvPowerUUID)
+    private static let controllerTempUUID = CBUUID(string: VanAlignSolarProtocol.controllerTempUUID)
+    private static let statusFlagsUUID = CBUUID(string: VanAlignSolarProtocol.statusFlagsUUID)
+
+    let deviceID: UUID
+    private let queue: DispatchQueue
+    private let peripheral: CBPeripheral
+    private let onUpdate: (DeviceSnapshot) -> Void
+    private let onStateChange: (DeviceLinkState) -> Void
+    private let onSolarState: (SolarState) -> Void
+
+    private var characteristics: [CBUUID: CBCharacteristic] = [:]
+    private var state = SolarState()
+    private var pollTimer: DispatchSourceTimer?
+
+    /// Reicht für einen Solarregler, dessen Werte sich über Sekunden ändern –
+    /// deutlich seltener als beim Ausrichten mit dem Neigungsmesser.
+    var pollInterval: TimeInterval = 5
+
+    init(deviceID: UUID,
+         peripheral: CBPeripheral,
+         queue: DispatchQueue,
+         onUpdate: @escaping (DeviceSnapshot) -> Void,
+         onStateChange: @escaping (DeviceLinkState) -> Void,
+         onSolarState: @escaping (SolarState) -> Void) {
+        self.deviceID = deviceID
+        self.queue = queue
+        self.peripheral = peripheral
+        self.onUpdate = onUpdate
+        self.onStateChange = onStateChange
+        self.onSolarState = onSolarState
+        super.init()
+        peripheral.delegate = self
+    }
+
+    // MARK: - Lebenszyklus
+
+    func start() {
+        onStateChange(.connecting)
+        peripheral.discoverServices([Self.serviceUUID])
+    }
+
+    func stop() {
+        pollTimer?.cancel()
+        pollTimer = nil
+        characteristics.removeAll()
+    }
+
+    func handleDisconnect() {
+        pollTimer?.cancel()
+        pollTimer = nil
+        characteristics.removeAll()
+    }
+
+    // MARK: - Abfrage
+
+    private func startPolling() {
+        guard pollTimer == nil else { return }
+        let timer = DispatchSource.makeTimerSource(queue: queue)
+        timer.schedule(deadline: .now(), repeating: pollInterval)
+        timer.setEventHandler { [weak self] in self?.readAll() }
+        timer.resume()
+        pollTimer = timer
+    }
+
+    private func readAll() {
+        guard peripheral.state == .connected else { return }
+        for characteristic in characteristics.values where characteristic.properties.contains(.read) {
+            peripheral.readValue(for: characteristic)
+        }
+    }
+
+    private func publish() {
+        guard state.hasReading else { return }
+        onStateChange(.live)
+        onSolarState(state)
+        onUpdate(state.snapshot(deviceID: deviceID, rssi: nil))
+    }
+}
+
+// MARK: - CBPeripheralDelegate
+
+extension SolarSession: CBPeripheralDelegate {
+
+    func peripheral(_ peripheral: CBPeripheral, didDiscoverServices error: Error?) {
+        if let error {
+            onStateChange(.failed(error.localizedDescription))
+            return
+        }
+        guard let service = peripheral.services?.first(where: { $0.uuid == Self.serviceUUID }) else {
+            onStateChange(.failed("Solarladeregler-Dienst nicht gefunden"))
+            return
+        }
+        peripheral.discoverCharacteristics(
+            [Self.batteryVoltageUUID, Self.pvVoltageUUID, Self.pvCurrentUUID,
+             Self.pvPowerUUID, Self.controllerTempUUID, Self.statusFlagsUUID],
+            for: service
+        )
+    }
+
+    func peripheral(_ peripheral: CBPeripheral,
+                    didDiscoverCharacteristicsFor service: CBService,
+                    error: Error?) {
+        guard error == nil, let found = service.characteristics else {
+            onStateChange(.failed(error?.localizedDescription ?? "Keine Merkmale gefunden"))
+            return
+        }
+        for characteristic in found {
+            characteristics[characteristic.uuid] = characteristic
+        }
+        guard !characteristics.isEmpty else {
+            onStateChange(.failed("Solarwerte nicht gefunden"))
+            return
+        }
+        startPolling()
+        readAll()
+    }
+
+    func peripheral(_ peripheral: CBPeripheral,
+                    didUpdateValueFor characteristic: CBCharacteristic,
+                    error: Error?) {
+        guard error == nil, let value = characteristic.value else { return }
+
+        switch characteristic.uuid {
+        case Self.batteryVoltageUUID:
+            state.batteryVoltage = VanAlignSolarProtocol.float(from: value)
+        case Self.pvVoltageUUID:
+            state.pvVoltage = VanAlignSolarProtocol.float(from: value)
+        case Self.pvCurrentUUID:
+            state.pvCurrent = VanAlignSolarProtocol.float(from: value)
+        case Self.pvPowerUUID:
+            state.pvPower = VanAlignSolarProtocol.float(from: value)
+        case Self.controllerTempUUID:
+            state.controllerTemperature = VanAlignSolarProtocol.float(from: value)
+        case Self.statusFlagsUUID:
+            guard let flags = VanAlignSolarProtocol.statusFlags(from: value) else { return }
+            state.isBatteryCharging = flags.isBatteryCharging
+            state.isBatteryDischarging = flags.isBatteryDischarging
+            state.isControllerActive = flags.isControllerActive
+            state.isCurrentLimited = flags.isCurrentLimited
+        default:
+            return
+        }
+        publish()
+    }
+}

Shared/Bluetooth/VanAlignSolarProtocol.swift

@@ -0,0 +1,55 @@
+import Foundation
+
+/// Solarladeregler „VanAlign Solar" – zweiter ESP32 im Fahrzeug, liest einen
+/// Votronic-Solarladeregler aus und stellt die Werte über einen eigenen
+/// BLE-Dienst bereit. Siehe `firmware/vanalign/esp32_ble_solar.yaml`.
+///
+/// Wie beim Neigungsmesser: kein Rahmenprotokoll, jede Messgrösse liegt in
+/// einer eigenen Charakteristik, alle sind reine Lesewerte, der Client fragt
+/// sie im Takt ab.
+enum VanAlignSolarProtocol {
+
+    /// Wird vom Gerät beworben, das Gerät ist darüber auffindbar.
+    static let serviceUUID = "05C9A349-2B8E-4B1D-9C9D-C247E9A6A001"
+
+    static let batteryVoltageUUID = "05C9A349-2B8E-4B1D-9C9D-C247E9A6A101"
+    static let pvVoltageUUID      = "05C9A349-2B8E-4B1D-9C9D-C247E9A6A102"
+    static let pvCurrentUUID      = "05C9A349-2B8E-4B1D-9C9D-C247E9A6A103"
+    static let pvPowerUUID        = "05C9A349-2B8E-4B1D-9C9D-C247E9A6A104"
+    static let controllerTempUUID = "05C9A349-2B8E-4B1D-9C9D-C247E9A6A105"
+    /// Bit0 Batterie lädt, Bit1 Batterie entlädt, Bit2 PV-Regler aktiv,
+    /// Bit3 PV-Strombegrenzung, Bit4 AES aktiv.
+    static let statusFlagsUUID    = "05C9A349-2B8E-4B1D-9C9D-C247E9A6A106"
+
+    /// Liest einen Messwert aus vier Bytes, little-endian – wie beim
+    /// Neigungsmesser legt die Firmware den Float per `memcpy` ab.
+    static func float(from data: Data) -> Double? {
+        guard data.count >= 4 else { return nil }
+        var raw: UInt32 = 0
+        for (index, byte) in data.prefix(4).enumerated() {
+            raw |= UInt32(byte) << UInt32(8 * index)
+        }
+        let value = Float(bitPattern: raw)
+        guard value.isFinite else { return nil }
+        return Double(value)
+    }
+
+    struct StatusFlags {
+        var isBatteryCharging = false
+        var isBatteryDischarging = false
+        var isControllerActive = false
+        var isCurrentLimited = false
+        var isAESActive = false
+    }
+
+    static func statusFlags(from data: Data) -> StatusFlags? {
+        guard let byte = data.first else { return nil }
+        var flags = StatusFlags()
+        flags.isBatteryCharging = byte & (1 << 0) != 0
+        flags.isBatteryDischarging = byte & (1 << 1) != 0
+        flags.isControllerActive = byte & (1 << 2) != 0
+        flags.isCurrentLimited = byte & (1 << 3) != 0
+        flags.isAESActive = byte & (1 << 4) != 0
+        return flags
+    }
+}

Shared/Models/ConfiguredDevice.swift

@@ -4,33 +4,33 @@ import Foundation
 /// welche Kennzahl als "Hauptwert" auf der Kachel gross dargestellt wird.
 enum DeviceRole: String, Codable, CaseIterable, Identifiable, Sendable {
     //case chargeBooster
-    //case solarCharger
     //case batteryMonitor
     //case bms
     //case fridge
     case leveling
+    case solar
 
     var id: String { rawValue }
 
     var title: String {
         switch self {
             //case .chargeBooster:  return "Ladebooster"
-            //case .solarCharger:   return "Solarladeregler"
             //case .batteryMonitor: return "Batteriemonitor"
             //case .bms:            return "Batterie / BMS"
             //case .fridge:         return "Kühlbox"
         case .leveling:       return "Nivellierung"
+        case .solar:          return "Solarladeregler"
         }
     }
 
     var symbol: String {
         switch self {
             //case .chargeBooster:  return "bolt.car"
-            //case .solarCharger:   return "sun.max"
             //case .batteryMonitor: return "gauge.with.dots.needle.bottom.50percent"
             //case .bms:            return "battery.100percent.bolt"
             //case .fridge:         return "refrigerator"
         case .leveling:       return "level"
+        case .solar:          return "sun.max"
         }
     }
 

Shared/Models/SolarState.swift

@@ -0,0 +1,48 @@
+import Foundation
+
+/// Zustand des Solarladereglers.
+struct SolarState: Equatable, Codable, Sendable {
+    var batteryVoltage: Double?
+    var pvVoltage: Double?
+    var pvCurrent: Double?
+    var pvPower: Double?
+    var controllerTemperature: Double?
+
+    var isBatteryCharging: Bool?
+    var isBatteryDischarging: Bool?
+    var isControllerActive: Bool?
+    var isCurrentLimited: Bool?
+
+    var hasReading: Bool {
+        batteryVoltage != nil || pvVoltage != nil || pvCurrent != nil || pvPower != nil
+    }
+
+    /// Kurzer Klartext, wie bei den übrigen Geräten als "Zustand" angezeigt.
+    var stateText: String? {
+        guard isControllerActive != nil else { return nil }
+        if isBatteryCharging == true { return "Lädt" }
+        if isControllerActive == true { return "Aktiv" }
+        return "Inaktiv"
+    }
+
+    func snapshot(deviceID: UUID, rssi: Int?) -> DeviceSnapshot {
+        var snapshot = DeviceSnapshot(deviceID: deviceID, timestamp: Date(), rssi: rssi)
+        snapshot.metrics = [
+            Metric("pv_power", "Solarleistung", pvPower, unit: "W", precision: 0, primary: true),
+            Metric("pv_voltage", "PV-Spannung", pvVoltage, unit: "V", precision: 1),
+            Metric("pv_current", "PV-Strom", pvCurrent, unit: "A", precision: 1),
+            Metric("battery_voltage", "Batteriespannung", batteryVoltage, unit: "V", precision: 2),
+        ]
+        if let controllerTemperature {
+            snapshot.metrics.append(
+                Metric("controller_temperature", "Reglertemperatur", controllerTemperature,
+                      unit: "°C", precision: 0)
+            )
+        }
+        snapshot.state = stateText
+        if isCurrentLimited == true {
+            snapshot.offReasons = ["PV-Strombegrenzung aktiv"]
+        }
+        return snapshot
+    }
+}

VanAligneiOS.xcodeproj/xcuserdata/christopher.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -22,12 +22,12 @@
 		<key>VanAligneComplication.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
-			<integer>2</integer>
+			<integer>3</integer>
 		</dict>
 		<key>VanAligneiOSWidgetExtension.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
-			<integer>3</integer>
+			<integer>2</integer>
 		</dict>
 	</dict>
 </dict>

firmware/vanalign/esp32_ble.yaml

@@ -22,9 +22,15 @@ esphome:
 
 esp32:
   board: esp32-s3-devkitc-1
+  flash_size: 16MB
   framework:
     type: esp-idf
 
+# N16R8: 16 MB Flash + 8 MB PSRAM, beim S3 als Octal-PSRAM angebunden.
+psram:
+  mode: octal
+  speed: 80MHz
+
 
 logger:
   level: WARN

firmware/vanalign/esp32_ble_sim.yaml

@@ -0,0 +1,332 @@
+# VanAlign Pro - Neigungsmessung über BLE (SIMULATION)
+#
+# Kopie von esp32_ble.yaml für den Fall, dass gerade kein MPU6050 zum
+# Anschliessen vorhanden ist. Der `platform: mpu6050`-Sensor sowie der
+# i2c-Bus wurden entfernt und durch Template-Sensoren ersetzt, die
+# plausible, sich langsam ändernde Beschleunigungswerte erzeugen (ein
+# gedachter Sensor, der gemütlich hin- und herschaukelt). Pitch/Roll,
+# Kalibrierung und die BLE-Charakteristiken funktionieren dadurch exakt wie
+# im Original - nur eben ohne angeschlossene Hardware.
+#
+# Name und Friendly Name sind bewusst auf "-sim" abgeändert, damit dieses
+# Gerät im Netzwerk/BLE nicht mit einem echten VanAlign-Gerät kollidiert.
+#
+# Sobald wieder ein echter MPU6050 verfügbar ist, einfach esp32_ble.yaml
+# weiterverwenden - diese Datei ist nur zum Testen der App/BLE-Anbindung.
+
+esphome:
+  name: vanalign-sim
+  friendly_name: "VanAlign Pro (Sim)"
+
+
+esp32:
+  board: esp32-s3-devkitc-1
+  flash_size: 16MB
+  framework:
+    type: esp-idf
+
+# N16R8: 16 MB Flash + 8 MB PSRAM, beim S3 als Octal-PSRAM angebunden.
+psram:
+  mode: octal
+  speed: 80MHz
+
+
+logger:
+  level: WARN
+
+espnow:
+  channel: 1
+
+sensor:
+  # Simulierte Rohwerte anstelle des physischen MPU6050. Die Sensor-Lage
+  # (Pitch/Roll) wandert langsam und stetig, wie es ein tatsächlich leicht
+  # schaukelndes Fahrzeug/Werkstück tun würde (Perioden ~75s/~113s).
+  - platform: template
+    name: "MPU6050 Accel X (Sim)"
+    id: accel_x
+    internal: true
+    update_interval: 0.1s
+    lambda: |-
+      float t = millis() / 1000.0f;
+      float pitch_rad = (15.0f * sin(t / 12.0f)) * 3.14159265f / 180.0f;
+      float roll_rad = (10.0f * sin(t / 18.0f + 1.0f)) * 3.14159265f / 180.0f;
+      return -9.80665f * sin(roll_rad) * cos(pitch_rad);
+
+  - platform: template
+    name: "MPU6050 Accel Y (Sim)"
+    id: accel_y
+    internal: true
+    update_interval: 0.1s
+    lambda: |-
+      float t = millis() / 1000.0f;
+      float pitch_rad = (15.0f * sin(t / 12.0f)) * 3.14159265f / 180.0f;
+      return 9.80665f * sin(pitch_rad);
+
+  - platform: template
+    name: "MPU6050 Accel Z (Sim)"
+    id: accel_z
+    internal: true
+    update_interval: 0.1s
+    lambda: |-
+      float t = millis() / 1000.0f;
+      float pitch_rad = (15.0f * sin(t / 12.0f)) * 3.14159265f / 180.0f;
+      float roll_rad = (10.0f * sin(t / 18.0f + 1.0f)) * 3.14159265f / 180.0f;
+      return 9.80665f * cos(roll_rad) * cos(pitch_rad);
+
+  # Gyro-Werte werden nur zur Anzeige simuliert (kleine Winkelgeschwindigkeit
+  # passend zur Schaukelbewegung oben, kein realer Bezug nötig).
+  - platform: template
+    name: "MPU6050 Gyro X-Achse"
+    id: mpu_gyro_x
+    update_interval: 0.1s
+    lambda: |-
+      float t = millis() / 1000.0f;
+      return (10.0f / 18.0f) * cos(t / 18.0f + 1.0f) * 3.14159265f / 180.0f;
+
+  - platform: template
+    name: "MPU6050 Gyro Y-Achse"
+    id: mpu_gyro_y
+    update_interval: 0.1s
+    lambda: |-
+      float t = millis() / 1000.0f;
+      return (15.0f / 12.0f) * cos(t / 12.0f) * 3.14159265f / 180.0f;
+
+  - platform: template
+    name: "MPU6050 Gyro Z-Achse"
+    id: mpu_gyro_z
+    update_interval: 0.1s
+    lambda: |-
+      return 0.0f;
+
+  - platform: template
+    name: "Neigung Pitch"
+    id: pitch
+    icon: mdi:caravan
+    unit_of_measurement: "°"
+    accuracy_decimals: 1
+    update_interval: 0.1s
+    lambda: |-
+      if (isnan(id(accel_x).state) || isnan(id(accel_y).state) || isnan(id(accel_z).state)) {
+        return NAN;
+      }
+      float raw = atan2(id(accel_y).state, sqrt(pow(id(accel_x).state, 2) + pow(id(accel_z).state, 2))) * (180.0 / 3.14159265);
+      return raw - id(pitch_offset); // Offset wird hier subtrahiert
+    filters:
+      - sliding_window_moving_average:
+          window_size: 8
+          send_every: 1
+      - exponential_moving_average:
+          alpha: 0.2
+
+  - platform: template
+    name: "Neigung Roll"
+    id: roll
+    icon: mdi:axis-x-rotate-clockwise
+    unit_of_measurement: "°"
+    accuracy_decimals: 1
+    update_interval: 0.1s
+    lambda: |-
+      if (isnan(id(accel_x).state) || isnan(id(accel_z).state)) {
+        return NAN;
+      }
+      float raw = atan2(-id(accel_x).state, id(accel_z).state) * (180.0 / 3.14159265);
+      return raw - id(roll_offset); // Offset wird hier subtrahiert
+    filters:
+      - sliding_window_moving_average:
+          window_size: 8
+          send_every: 1
+      - exponential_moving_average:
+          alpha: 0.2
+
+globals:
+  - id: pitch_offset
+    type: float
+    restore_value: yes
+    initial_value: '0.0'
+  - id: roll_offset
+    type: float
+    restore_value: yes
+    initial_value: '0.0'
+  # Die Einbaulage liegt im Gerät, nicht in den Apps: Sie beschreibt, wie der
+  # Sensor im Fahrzeug sitzt – eine Eigenschaft des Einbaus, nicht des Telefons.
+  # Damit sehen iPhone, Uhr und Android dasselbe, ohne sie je einzeln zu
+  # bestimmen. Angewandt wird sie weiterhin in den Apps; das Gerät verwahrt sie
+  # nur, sonst rechneten ältere Clients die Korrektur ein zweites Mal.
+  - id: orientation_version
+    type: uint8_t
+    restore_value: yes
+    initial_value: '0'
+  - id: orientation_source
+    type: uint8_t
+    restore_value: yes
+    initial_value: '0'
+  - id: orientation_invert_long
+    type: bool
+    restore_value: yes
+    initial_value: 'false'
+  - id: orientation_invert_lat
+    type: bool
+    restore_value: yes
+    initial_value: 'false'
+  - id: orientation_twist
+    type: float
+    restore_value: yes
+    initial_value: '0.0'
+
+  - id: enable_captive
+    type: bool
+    restore_value: yes
+    initial_value: 'false'
+
+esp32_ble_server:
+  services:
+    - uuid: 2a24b789-7aab-4535-af3e-ee76a35cc42d
+      advertise: true
+      characteristics:
+        - id: pitch_ble
+          uuid: cad48e28-7fbe-41cf-bae9-d77a6c233424
+          description: "Pitch"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(sizeof(float));
+            float val = id(pitch).state;
+            memcpy(v.data(), &val, sizeof(float));
+            return v;
+        - id: roll_ble
+          uuid: cad48e28-7fbe-41cf-bae9-d77a6c233425
+          description: "Roll"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(sizeof(float));
+            float val = id(roll).state;
+            memcpy(v.data(), &val, sizeof(float));
+            return v;
+        # Die gespeicherten Nullpunkte, zwei Floats. Daran erkennen die Apps,
+        # ob überhaupt schon kalibriert wurde.
+        - id: offsets_ble
+          uuid: cad48e28-7fbe-41cf-bae9-d77a6c233426
+          description: "Kalibrier-Offsets"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(2 * sizeof(float));
+            float p = id(pitch_offset);
+            float r = id(roll_offset);
+            memcpy(v.data(), &p, sizeof(float));
+            memcpy(v.data() + sizeof(float), &r, sizeof(float));
+            return v;
+
+        # Die Einbaulage, acht Byte:
+        #
+        #   0      Version, 1 = gültig gesetzt, 0 = nie geschrieben
+        #   1      Längsachse: 0 = Pitch des Sensors, 1 = Roll des Sensors
+        #   2      längs umgekehrt (0/1)
+        #   3      quer umgekehrt (0/1)
+        #   4..7   Verdrehung um die Hochachse, float32, Grad
+        - id: orientation_ble
+          uuid: cad48e28-7fbe-41cf-bae9-d77a6c233428
+          description: "Einbaulage"
+          read: true
+          write: true
+          value: !lambda |-
+            std::vector<unsigned char> v(8, 0);
+            v[0] = id(orientation_version);
+            v[1] = id(orientation_source);
+            v[2] = id(orientation_invert_long) ? 1 : 0;
+            v[3] = id(orientation_invert_lat) ? 1 : 0;
+            float t = id(orientation_twist);
+            memcpy(v.data() + 4, &t, sizeof(float));
+            return v;
+          on_write:
+            then:
+              - lambda: |-
+                  if (x.size() < 8 || x[0] != 1) {
+                    ESP_LOGW("vanalign", "Einbaulage verworfen: %d Byte, Version %d",
+                             (int) x.size(), x.empty() ? -1 : (int) x[0]);
+                    return;
+                  }
+                  float t;
+                  memcpy(&t, x.data() + 4, sizeof(float));
+                  if (!std::isfinite(t) || fabsf(t) > 180.0f) {
+                    ESP_LOGW("vanalign", "Einbaulage verworfen: Verdrehung %.1f", t);
+                    return;
+                  }
+                  id(orientation_version) = 1;
+                  id(orientation_source) = x[1];
+                  id(orientation_invert_long) = x[2] != 0;
+                  id(orientation_invert_lat) = x[3] != 0;
+                  id(orientation_twist) = t;
+                  ESP_LOGI("vanalign", "Einbaulage gespeichert: Quelle=%d laengs=%d quer=%d verdreht=%.1f",
+                           (int) x[1], (int) x[2], (int) x[3], t);
+
+        - id: calib_ble
+          uuid: cad48e28-7fbe-41cf-bae9-d77a6c233427
+          description: "Kalibriere Neigung"
+          write: true
+          on_write:
+            then:
+              - lambda: |-
+                  bool reset = !x.empty() && (x[0] == 0x00 || x[0] == '0');
+                  if (reset) {
+                    id(reset_calibration).execute();
+                  } else {
+                    id(calibrate_level).execute();
+                  }
+
+#web_server:
+#  port: 80
+
+
+#ota:
+#  platform: web_server
+
+
+#wifi:
+#  ap:
+#    ssid: "VanAlign-Setup"
+#    password: "kalibrierung"
+
+
+
+script:
+  # Die aktuelle Lage wird zur neuen Null. Knopf und Bluetooth laufen hier
+  # zusammen, damit sie nicht auseinanderdriften.
+  - id: calibrate_level
+    then:
+      - lambda: |-
+          if (isnan(id(accel_x).state) || isnan(id(accel_y).state) || isnan(id(accel_z).state)) {
+            ESP_LOGW("vanalign", "Kalibrierung abgebrochen: keine Sensorwerte");
+            return;
+          }
+          id(pitch_offset) = atan2(id(accel_y).state, sqrt(pow(id(accel_x).state, 2) + pow(id(accel_z).state, 2))) * (180.0 / 3.14159265);
+          id(roll_offset) = atan2(-id(accel_x).state, id(accel_z).state) * (180.0 / 3.14159265);
+          ESP_LOGI("vanalign", "Kalibriert: pitch_offset=%.2f roll_offset=%.2f", id(pitch_offset), id(roll_offset));
+
+  - id: reset_calibration
+    then:
+      - lambda: |-
+          id(pitch_offset) = 0.0f;
+          id(roll_offset) = 0.0f;
+          ESP_LOGI("vanalign", "Kalibrierung zurückgesetzt");
+
+button:
+  - platform: template
+    name: "Kalibriere Neigung"
+    id: calib_button
+    on_press:
+      - script.execute: calibrate_level
+
+  - platform: template
+    name: "Kalibrierung zurücksetzen"
+    id: calib_reset_button
+    on_press:
+      - script.execute: reset_calibration
+  - platform: restart
+    name: "ESP Restart"
+
+text_sensor:
+  - platform: template
+    name: "Firmware Version"
+    id: firmware_version
+    icon: mdi:tag
+    lambda: |-
+      return {"v1.0.2-sim"};

firmware/vanalign/esp32_ble_solar.yaml

@@ -0,0 +1,233 @@
+# VanAlign Solar - Votronic Solarladeregler über BLE
+#
+# Zweiter ESP32 im Fahrzeug, unabhängig vom Neigungssensor (esp32_ble.yaml).
+# Liest den Votronic-Solarladeregler über den Displaylink-Port (UART) mit der
+# externen Komponente github://syssi/esphome-votronic aus und stellt die
+# Werte - genau wie beim Neigungssensor - über einen eigenen BLE-Service
+# bereit. Zusätzlich (für Debug-Zwecke) läuft WLAN mit und die Werte werden
+# auch auf dem eingebauten Webserver (Port 80) angezeigt - MQTT und die API
+# sind weiterhin nicht enthalten. WLAN-Zugangsdaten liegen in secrets.yaml
+# (lokal anzulegen, ist per .gitignore ausgeschlossen).
+#
+# Verkabelung: UART TX=GPIO4, RX=GPIO5 an den Displaylink-Port des Reglers,
+# Baudrate 1000 (kein Tippfehler - das Votronic-Protokoll nutzt diese
+# ungewöhnlich niedrige Rate). Board/Pins ggf. an die tatsächlich verbaute
+# Hardware anpassen, hier als ESP32-S3-DevKitC-1 wie beim Neigungssensor
+# angenommen.
+#
+# BLE-Service 05c9a349-2b8e-4b1d-9c9d-c247e9a6a001 (wird beworben):
+#
+#   Charakteristik  UUID (Ende)  Inhalt
+#   Batteriespg.    ...a101      Float32 LE, Volt
+#   PV-Spannung     ...a102      Float32 LE, Volt
+#   PV-Strom        ...a103      Float32 LE, Ampere
+#   PV-Leistung     ...a104      Float32 LE, Watt
+#   Reglertemp.     ...a105      Float32 LE, °C
+#   Statusflags     ...a106      1 Byte, Bitmaske: Bit0 Batterie lädt,
+#                                Bit1 Batterie entlädt, Bit2 PV-Regler
+#                                aktiv, Bit3 PV-Strombegrenzung, Bit4 AES
+#   PV-Modus-ID     ...a107      1 Byte, roher Wert aus pv_mode_setting_id
+#   Batteriestatus  ...a108      1 Byte, rohe Bitmaske aus dem Regler
+#   Reglerstatus    ...a109      1 Byte, rohe Bitmaske aus dem Regler
+#
+# Alle Charakteristiken sind reine Lesewerte, wie beim Neigungssensor fragt
+# der Client sie im Takt ab.
+
+esphome:
+  name: vanalign-solar
+  friendly_name: "VanAlign Solar"
+
+esp32:
+  board: esp32-s3-devkitc-1
+  flash_size: 16MB
+  framework:
+    type: esp-idf
+
+# N16R8: 16 MB Flash + 8 MB PSRAM, beim S3 als Octal-PSRAM angebunden.
+psram:
+  mode: octal
+  speed: 80MHz
+
+logger:
+  level: WARN
+
+wifi:
+  ssid: !secret wifi_ssid
+  password: !secret wifi_password
+
+web_server:
+  port: 80
+
+external_components:
+  - source: github://syssi/esphome-votronic@main
+    refresh: 0s
+
+uart:
+  - id: uart_0
+    baud_rate: 1000
+    tx_pin: GPIO4
+    rx_pin: GPIO5
+
+votronic:
+  - id: votronic0
+    uart_id: uart_0
+    rx_timeout: 150ms
+    throttle: 2s
+
+sensor:
+  - platform: votronic
+    votronic_id: votronic0
+    battery_computer_battery_voltage:
+      name: "Batteriespannung"
+      id: battery_voltage
+    pv_voltage:
+      name: "PV Spannung"
+      id: pv_voltage
+    pv_current:
+      name: "PV Strom"
+      id: pv_current
+    pv_power:
+      name: "PV Leistung"
+      id: pv_power
+    pv_controller_temperature:
+      name: "Reglertemperatur"
+      id: pv_temperature
+    pv_mode_setting_id:
+      name: "PV Modus-ID"
+      id: pv_mode_id
+    pv_battery_status_bitmask:
+      name: "PV Batteriestatus (Bitmaske)"
+      id: pv_battery_status_bitmask
+    pv_controller_status_bitmask:
+      name: "PV Reglerstatus (Bitmaske)"
+      id: pv_controller_status_bitmask
+
+binary_sensor:
+  - platform: votronic
+    votronic_id: votronic0
+    battery_computer_charging:
+      name: "Batterie lädt"
+      id: battery_charging
+    battery_computer_discharging:
+      name: "Batterie entlädt"
+      id: battery_discharging
+    pv_controller_active:
+      name: "PV Regler aktiv"
+      id: pv_active
+    pv_current_reduction:
+      name: "PV Strombegrenzung"
+      id: pv_current_reduction
+    pv_aes_active:
+      name: "PV AES aktiv"
+      id: pv_aes_active
+
+text_sensor:
+  - platform: votronic
+    votronic_id: votronic0
+    pv_mode_setting:
+      name: "PV Modus"
+    pv_battery_status:
+      name: "PV Batteriestatus"
+    pv_controller_status:
+      name: "PV Reglerstatus"
+  - platform: template
+    name: "Firmware Version"
+    id: firmware_version
+    icon: mdi:tag
+    lambda: |-
+      return {"v1.0.0"};
+
+esp32_ble_server:
+  services:
+    - uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a001
+      advertise: true
+      characteristics:
+        - id: battery_voltage_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a101
+          description: "Batteriespannung"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(sizeof(float));
+            float val = id(battery_voltage).state;
+            memcpy(v.data(), &val, sizeof(float));
+            return v;
+        - id: pv_voltage_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a102
+          description: "PV Spannung"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(sizeof(float));
+            float val = id(pv_voltage).state;
+            memcpy(v.data(), &val, sizeof(float));
+            return v;
+        - id: pv_current_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a103
+          description: "PV Strom"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(sizeof(float));
+            float val = id(pv_current).state;
+            memcpy(v.data(), &val, sizeof(float));
+            return v;
+        - id: pv_power_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a104
+          description: "PV Leistung"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(sizeof(float));
+            float val = id(pv_power).state;
+            memcpy(v.data(), &val, sizeof(float));
+            return v;
+        - id: pv_temperature_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a105
+          description: "Reglertemperatur"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(sizeof(float));
+            float val = id(pv_temperature).state;
+            memcpy(v.data(), &val, sizeof(float));
+            return v;
+        # Bit0 Batterie lädt, Bit1 Batterie entlädt, Bit2 PV-Regler aktiv,
+        # Bit3 PV-Strombegrenzung, Bit4 AES aktiv.
+        - id: status_flags_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a106
+          description: "Statusflags"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(1, 0);
+            uint8_t flags = 0;
+            if (id(battery_charging).state) flags |= (1 << 0);
+            if (id(battery_discharging).state) flags |= (1 << 1);
+            if (id(pv_active).state) flags |= (1 << 2);
+            if (id(pv_current_reduction).state) flags |= (1 << 3);
+            if (id(pv_aes_active).state) flags |= (1 << 4);
+            v[0] = flags;
+            return v;
+        - id: pv_mode_id_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a107
+          description: "PV Modus-ID"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(1, 0);
+            v[0] = (uint8_t) id(pv_mode_id).state;
+            return v;
+        - id: pv_battery_status_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a108
+          description: "PV Batteriestatus (Bitmaske)"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(1, 0);
+            v[0] = (uint8_t) id(pv_battery_status_bitmask).state;
+            return v;
+        - id: pv_controller_status_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a109
+          description: "PV Reglerstatus (Bitmaske)"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(1, 0);
+            v[0] = (uint8_t) id(pv_controller_status_bitmask).state;
+            return v;
+
+button:
+  - platform: restart
+    name: "ESP Restart"

firmware/vanalign/esp32_ble_solar_sim.yaml

@@ -0,0 +1,265 @@
+# VanAlign Solar - Votronic Solarladeregler über BLE (SIMULATION)
+#
+# Kopie von esp32_ble_solar.yaml für den Fall, dass gerade kein Votronic-
+# Regler zum Anschliessen vorhanden ist. Die `platform: votronic`-Sensoren
+# sowie UART/external_components wurden entfernt und durch Template-Sensoren
+# ersetzt, die einen plausiblen Tagesverlauf simulieren: PV-Spannung/-Strom
+# folgen einem "Sonnenstand" (ein gedachter, ca. 6 Minuten langer Tag), die
+# Batteriespannung schwankt gemütlich mit, und die Statusflags/Bitmasken
+# leiten sich aus diesen Werten ab. Die BLE-Charakteristiken funktionieren
+# dadurch exakt wie im Original - nur eben ohne angeschlossene Hardware.
+#
+# Name und Friendly Name sind bewusst auf "-sim" abgeändert, damit dieses
+# Gerät im BLE-Umfeld nicht mit einem echten VanAlign-Solar-Gerät kollidiert.
+#
+# Für Debug-Zwecke läuft WLAN mit und die Werte werden zusätzlich auf dem
+# eingebauten Webserver (Port 80) angezeigt; WLAN-Zugangsdaten liegen in
+# secrets.yaml (lokal anzulegen, ist per .gitignore ausgeschlossen). Alle
+# simulierten Werte aktualisieren sich höchstens jede Sekunde, damit sich
+# Änderungen beim Debuggen zügig zeigen.
+#
+# Sobald wieder ein echter Votronic-Regler verfügbar ist, einfach
+# esp32_ble_solar.yaml weiterverwenden - diese Datei ist nur zum Testen der
+# App/BLE-Anbindung.
+
+esphome:
+  name: vanalign-solar-sim
+  friendly_name: "VanAlign Solar (Sim)"
+
+esp32:
+  board: esp32-s3-devkitc-1
+  flash_size: 16MB
+  framework:
+    type: esp-idf
+
+# N16R8: 16 MB Flash + 8 MB PSRAM, beim S3 als Octal-PSRAM angebunden.
+psram:
+  mode: octal
+  speed: 80MHz
+
+logger:
+  level: WARN
+
+wifi:
+  ssid: !secret wifi_ssid
+  password: !secret wifi_password
+
+web_server:
+  port: 80
+
+sensor:
+  # Simulierter "Sonnenstand": 0 nachts, sanfter Buckel tagsüber, Periode
+  # ca. 6 Minuten - reicht zum Beobachten eines vollen Auf/Ab in der App.
+  - platform: template
+    name: "Sonnenstand (Sim)"
+    id: sun_level
+    internal: true
+    update_interval: 1s
+    lambda: |-
+      float t = millis() / 1000.0f;
+      return std::max(0.0f, sinf(t / 180.0f));
+
+  - platform: template
+    name: "Batteriespannung (Sim)"
+    id: battery_voltage
+    unit_of_measurement: "V"
+    accuracy_decimals: 2
+    update_interval: 1s
+    lambda: |-
+      float t = millis() / 1000.0f;
+      return 12.6f + 0.8f * id(sun_level).state + 0.05f * sin(t / 20.0f);
+
+  - platform: template
+    name: "PV Spannung (Sim)"
+    id: pv_voltage
+    unit_of_measurement: "V"
+    accuracy_decimals: 2
+    update_interval: 1s
+    lambda: |-
+      float t = millis() / 1000.0f;
+      return id(sun_level).state > 0.01f ? (19.0f + 1.0f * sin(t / 25.0f)) : 0.0f;
+
+  - platform: template
+    name: "PV Strom (Sim)"
+    id: pv_current
+    unit_of_measurement: "A"
+    accuracy_decimals: 2
+    update_interval: 1s
+    lambda: |-
+      float t = millis() / 1000.0f;
+      return id(sun_level).state * (6.0f + 1.5f * sin(t / 17.0f));
+
+  - platform: template
+    name: "PV Leistung (Sim)"
+    id: pv_power
+    unit_of_measurement: "W"
+    accuracy_decimals: 1
+    update_interval: 1s
+    lambda: |-
+      return id(pv_voltage).state * id(pv_current).state;
+
+  - platform: template
+    name: "Reglertemperatur (Sim)"
+    id: pv_temperature
+    unit_of_measurement: "°C"
+    accuracy_decimals: 1
+    update_interval: 1s
+    lambda: |-
+      float t = millis() / 1000.0f;
+      return 22.0f + 10.0f * id(sun_level).state + 1.0f * sin(t / 11.0f);
+
+  - platform: template
+    name: "PV Modus-ID (Sim)"
+    id: pv_mode_id
+    update_interval: 1s
+    lambda: |-
+      return 3.0f; // fester simulierter Modus (MPPT)
+
+  - platform: template
+    name: "PV Batteriestatus (Bitmaske, Sim)"
+    id: pv_battery_status_bitmask
+    update_interval: 1s
+    lambda: |-
+      return id(sun_level).state > 0.01f ? 1.0f : 0.0f;
+
+  - platform: template
+    name: "PV Reglerstatus (Bitmaske, Sim)"
+    id: pv_controller_status_bitmask
+    update_interval: 1s
+    lambda: |-
+      return id(sun_level).state > 0.01f ? 2.0f : 0.0f;
+
+binary_sensor:
+  - platform: template
+    name: "Batterie lädt (Sim)"
+    id: battery_charging
+    lambda: |-
+      return id(pv_current).state > 0.2f;
+
+  - platform: template
+    name: "Batterie entlädt (Sim)"
+    id: battery_discharging
+    lambda: |-
+      return id(pv_current).state <= 0.2f;
+
+  - platform: template
+    name: "PV Regler aktiv (Sim)"
+    id: pv_active
+    lambda: |-
+      return id(sun_level).state > 0.01f;
+
+  - platform: template
+    name: "PV Strombegrenzung (Sim)"
+    id: pv_current_reduction
+    lambda: |-
+      float t = millis() / 1000.0f;
+      return id(pv_active).state && sin(t / 60.0f) > 0.9f;
+
+  - platform: template
+    name: "PV AES aktiv (Sim)"
+    id: pv_aes_active
+    lambda: |-
+      return id(battery_voltage).state > 13.3f;
+
+text_sensor:
+  - platform: template
+    name: "Firmware Version"
+    id: firmware_version
+    icon: mdi:tag
+    lambda: |-
+      return {"v1.0.0-sim"};
+
+esp32_ble_server:
+  services:
+    - uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a001
+      advertise: true
+      characteristics:
+        - id: battery_voltage_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a101
+          description: "Batteriespannung"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(sizeof(float));
+            float val = id(battery_voltage).state;
+            memcpy(v.data(), &val, sizeof(float));
+            return v;
+        - id: pv_voltage_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a102
+          description: "PV Spannung"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(sizeof(float));
+            float val = id(pv_voltage).state;
+            memcpy(v.data(), &val, sizeof(float));
+            return v;
+        - id: pv_current_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a103
+          description: "PV Strom"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(sizeof(float));
+            float val = id(pv_current).state;
+            memcpy(v.data(), &val, sizeof(float));
+            return v;
+        - id: pv_power_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a104
+          description: "PV Leistung"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(sizeof(float));
+            float val = id(pv_power).state;
+            memcpy(v.data(), &val, sizeof(float));
+            return v;
+        - id: pv_temperature_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a105
+          description: "Reglertemperatur"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(sizeof(float));
+            float val = id(pv_temperature).state;
+            memcpy(v.data(), &val, sizeof(float));
+            return v;
+        # Bit0 Batterie lädt, Bit1 Batterie entlädt, Bit2 PV-Regler aktiv,
+        # Bit3 PV-Strombegrenzung, Bit4 AES aktiv.
+        - id: status_flags_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a106
+          description: "Statusflags"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(1, 0);
+            uint8_t flags = 0;
+            if (id(battery_charging).state) flags |= (1 << 0);
+            if (id(battery_discharging).state) flags |= (1 << 1);
+            if (id(pv_active).state) flags |= (1 << 2);
+            if (id(pv_current_reduction).state) flags |= (1 << 3);
+            if (id(pv_aes_active).state) flags |= (1 << 4);
+            v[0] = flags;
+            return v;
+        - id: pv_mode_id_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a107
+          description: "PV Modus-ID"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(1, 0);
+            v[0] = (uint8_t) id(pv_mode_id).state;
+            return v;
+        - id: pv_battery_status_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a108
+          description: "PV Batteriestatus (Bitmaske)"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(1, 0);
+            v[0] = (uint8_t) id(pv_battery_status_bitmask).state;
+            return v;
+        - id: pv_controller_status_ble
+          uuid: 05c9a349-2b8e-4b1d-9c9d-c247e9a6a109
+          description: "PV Reglerstatus (Bitmaske)"
+          read: true
+          value: !lambda |-
+            std::vector<unsigned char> v(1, 0);
+            v[0] = (uint8_t) id(pv_controller_status_bitmask).state;
+            return v;
+
+button:
+  - platform: restart
+    name: "ESP Restart"