forked from fritob/Camper-Monitor
BMS: alle Schreib-/Empfangs-Kombinationen durchprobieren
Die WattCycle-Batterie meldete sich am FFF0-Dienst, nahm aber keine Kommandos an. Grund: dort ist FFF1 die erste beschreibbare Charakteristik, sie sieht schreibbar aus und bleibt trotzdem stumm – Kommandos gehören auf FFF2. Statt die richtige Charakteristik zu raten, stellt BMSSession jetzt alle Paare aus schreibbarer und benachrichtigender Charakteristik zusammen, jeweils mit und ohne Schreibbestätigung, und arbeitet sie ab, bis eines antwortet. Bekannte Paare (FFF2/FFF1, FF02/FF01, Nordic UART) kommen zuerst dran; ein Kandidat, der sich nicht abonnieren lässt, wird sofort übersprungen. Auf jedem Weg werden weiterhin Daly klassisch, Daly Modbus und JBD angefragt. Die Diagnose zeigt dazu den vollständigen GATT-Baum des Geräts, den gerade versuchten Weg samt Position in der Kandidatenliste sowie Zähler für gesendete Anfragen und empfangene Bytes. Damit lässt sich unterscheiden, ob das BMS die Kommandos gar nicht annimmt oder ein unbekanntes Protokoll spricht. Nebenbei: "caravan" existiert nicht als SF-Symbol und ließ SwiftUI stillschweigend auf Text zurückfallen – in den Demodaten ersetzt. README auf Profile und WattCycle/JBD nachgezogen. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
@@ -4,22 +4,27 @@ import Foundation
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/// Hält die GATT-Verbindung zu einem BMS, pollt die Werte und meldet fertige
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/// Snapshots zurück.
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///
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/// Unterstützt drei Dialekte und erkennt selbst, welchen das Gerät spricht:
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/// Zwei Dinge sind bei diesen Geräten nicht vorhersehbar und werden deshalb
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/// ausprobiert statt vorausgesetzt:
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///
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/// * **Daly klassisch** – 13-Byte-Rahmen, beginnend mit `A5`
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/// * **Daly Modbus** – `D2 03 …`, neuere Daly-Firmware
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/// * **JBD / Xiaoxiang** – `DD A5 …`, u.a. in WattCycle-Akkus
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///
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/// Auch die BLE-Charakteristiken werden gesucht statt vorausgesetzt: die Module
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/// unterscheiden sich zwischen Herstellern und Fertigungschargen.
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/// 1. **Über welche Charakteristiken gesprochen wird.** Im selben Dienst sehen
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/// oft mehrere Charakteristiken beschreibbar aus, nur eine nimmt aber
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/// wirklich Kommandos an. Die Session stellt alle sinnvollen Paare aus
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/// Schreib- und Benachrichtigungs-Charakteristik zusammen und arbeitet sie
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/// der Reihe nach ab, bis eines antwortet.
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/// 2. **Welches Protokoll gesprochen wird.** Auf jedem Paar werden Daly
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/// (klassisch und Modbus) und JBD/Xiaoxiang angefragt; der erste gültige
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/// Rahmen legt den Dialekt fest.
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final class BMSSession: NSObject {
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/// Bekannte Dienste, in Reihenfolge der Wahrscheinlichkeit.
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private static let preferredServices: [CBUUID] = [
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CBUUID(string: "FFF0"), // Daly
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CBUUID(string: "FF00"), // JBD
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CBUUID(string: "FFE0"),
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CBUUID(string: "6E400001-B5A3-F393-E0A9-E50E24DCCA9E"), // Nordic UART
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/// Bekannte Paare, die zuerst versucht werden.
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private static let knownPairs: [(service: String, write: String, notify: String)] = [
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("FFF0", "FFF2", "FFF1"), // Daly und viele baugleiche Module
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("FF00", "FF02", "FF01"), // JBD / Xiaoxiang
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("FFE0", "FFE1", "FFE1"),
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("6E400001-B5A3-F393-E0A9-E50E24DCCA9E",
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"6E400002-B5A3-F393-E0A9-E50E24DCCA9E",
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"6E400003-B5A3-F393-E0A9-E50E24DCCA9E"), // Nordic UART
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]
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enum Dialect: String {
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@@ -29,25 +34,51 @@ final class BMSSession: NSObject {
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case jbd = "JBD / Xiaoxiang"
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}
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/// Ein Kandidat: worüber geschrieben, worüber gelauscht und wie geschrieben
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/// wird. Der Schreibmodus gehört dazu, weil manche Module nur die eine oder
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/// nur die andere Variante annehmen.
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private struct Endpoint {
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let write: CBCharacteristic
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let notify: CBCharacteristic
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let writeType: CBCharacteristicWriteType
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let isKnownPair: Bool
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var label: String {
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let mode = writeType == .withoutResponse ? "ohne Bestätigung" : "mit Bestätigung"
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return "\(write.uuid.uuidString) → \(notify.uuid.uuidString), \(mode)"
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}
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}
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let deviceID: UUID
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private let peripheral: CBPeripheral
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private let onUpdate: (DeviceSnapshot) -> Void
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private let onStateChange: (DeviceLinkState) -> Void
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private let onDiagnostics: (BMSDiagnostics) -> Void
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private var writeCharacteristic: CBCharacteristic?
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private var notifyCharacteristic: CBCharacteristic?
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private var endpoints: [Endpoint] = []
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private var endpointIndex = 0
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private var pendingServices = 0
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private(set) var dialect: Dialect = .unknown
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private var dalyState = DalyState()
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private var jbdState = JBDState()
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private var buffer: [UInt8] = []
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private var pollTimer: Timer?
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private var silentRounds = 0
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private var lastResponse: Data?
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private var receivedByteCount = 0
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private var sentFrameCount = 0
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private var gattSummary: [String] = []
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/// Runden ohne verwertbare Antwort auf dem aktuellen Kandidaten.
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private var silentRounds = 0
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/// Abstand zwischen zwei Abfragerunden.
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/// Abstand zwischen zwei Abfragerunden im Normalbetrieb.
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var pollInterval: TimeInterval = 5
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/// Kürzer, solange noch gesucht wird – sonst dauert das Durchprobieren lang.
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private var searchInterval: TimeInterval = 8
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private var currentEndpoint: Endpoint? {
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endpoints.indices.contains(endpointIndex) ? endpoints[endpointIndex] : nil
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}
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init(deviceID: UUID,
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peripheral: CBPeripheral,
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@@ -73,11 +104,11 @@ final class BMSSession: NSObject {
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func stop() {
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pollTimer?.invalidate()
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pollTimer = nil
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if let notifyCharacteristic, peripheral.state == .connected {
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peripheral.setNotifyValue(false, for: notifyCharacteristic)
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if let notify = currentEndpoint?.notify, peripheral.state == .connected {
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peripheral.setNotifyValue(false, for: notify)
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}
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writeCharacteristic = nil
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notifyCharacteristic = nil
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endpoints.removeAll()
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endpointIndex = 0
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dialect = .unknown
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buffer.removeAll()
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}
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@@ -85,80 +116,148 @@ final class BMSSession: NSObject {
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func handleDisconnect() {
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pollTimer?.invalidate()
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pollTimer = nil
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writeCharacteristic = nil
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notifyCharacteristic = nil
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endpoints.removeAll()
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endpointIndex = 0
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buffer.removeAll()
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}
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// MARK: - Kandidaten
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/// Stellt nach der Dienstsuche alle Paare zusammen: bekannte Kombinationen
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/// zuerst, danach jede andere Schreib-/Notify-Kombination im selben Dienst.
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private func buildEndpoints() {
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var candidates: [Endpoint] = []
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for service in peripheral.services ?? [] {
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let characteristics = service.characteristics ?? []
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let writable = characteristics.filter {
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$0.properties.contains(.write) || $0.properties.contains(.writeWithoutResponse)
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}
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let notifying = characteristics.filter {
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$0.properties.contains(.notify) || $0.properties.contains(.indicate)
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}
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guard !writable.isEmpty, !notifying.isEmpty else { continue }
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for write in writable {
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for notify in notifying {
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let known = Self.knownPairs.contains {
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CBUUID(string: $0.service) == service.uuid
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&& CBUUID(string: $0.write) == write.uuid
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&& CBUUID(string: $0.notify) == notify.uuid
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}
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// Beide Schreibarten anbieten, sofern das Gerät sie kann.
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if write.properties.contains(.writeWithoutResponse) {
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candidates.append(Endpoint(write: write, notify: notify,
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writeType: .withoutResponse, isKnownPair: known))
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}
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if write.properties.contains(.write) {
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candidates.append(Endpoint(write: write, notify: notify,
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writeType: .withResponse, isKnownPair: known))
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}
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}
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}
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}
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// Bekannte Paare nach vorn, der Rest in Fundreihenfolge.
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endpoints = candidates.sorted { lhs, rhs in
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lhs.isKnownPair && !rhs.isKnownPair
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}
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endpointIndex = 0
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guard !endpoints.isEmpty else {
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onStateChange(.failed("Keine passenden Bluetooth-Merkmale gefunden"))
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publishDiagnostics()
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return
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}
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activateCurrentEndpoint()
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}
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private func activateCurrentEndpoint() {
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guard let endpoint = currentEndpoint else { return }
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silentRounds = 0
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buffer.removeAll()
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peripheral.setNotifyValue(true, for: endpoint.notify)
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publishDiagnostics()
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}
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/// Wechselt auf den nächsten Kandidaten. Sind alle durch, wird von vorn
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/// begonnen – das Gerät kann zwischenzeitlich aufgewacht sein.
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private func advanceEndpoint() {
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guard let previous = currentEndpoint else { return }
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if peripheral.state == .connected {
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peripheral.setNotifyValue(false, for: previous.notify)
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}
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endpointIndex = (endpointIndex + 1) % endpoints.count
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onStateChange(.connecting)
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activateCurrentEndpoint()
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beginPolling()
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}
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// MARK: - Abfrage
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private func beginPolling() {
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pollTimer?.invalidate()
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onStateChange(.live)
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poll()
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pollTimer = Timer.scheduledTimer(withTimeInterval: pollInterval, repeats: true) { [weak self] _ in
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let interval = dialect == .unknown ? searchInterval : pollInterval
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pollTimer = Timer.scheduledTimer(withTimeInterval: interval, repeats: true) { [weak self] _ in
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self?.poll()
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}
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}
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private func poll() {
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guard peripheral.state == .connected, writeCharacteristic != nil else { return }
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guard peripheral.state == .connected, currentEndpoint != nil else { return }
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switch dialect {
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case .unknown:
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probeDialects()
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// Alle drei Protokolle anfragen; was antwortet, gewinnt.
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sendSequence([
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DalyProtocol.requestFrame(.soc),
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JBDProtocol.requestFrame(.basicInfo),
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DalyProtocol.modbusReadFrame(),
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], spacing: 1.2, thenGiveUpAfter: 5)
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case .dalyClassic:
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sendSequence(DalyProtocol.Command.allCases.map { DalyProtocol.requestFrame($0) })
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sendSequence(DalyProtocol.Command.allCases.map { DalyProtocol.requestFrame($0) },
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spacing: 0.25, thenGiveUpAfter: 2)
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case .dalyModbus:
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sendSequence([DalyProtocol.modbusReadFrame()])
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sendSequence([DalyProtocol.modbusReadFrame()], spacing: 0.25, thenGiveUpAfter: 2)
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case .jbd:
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sendSequence(JBDProtocol.Command.allCases.map { JBDProtocol.requestFrame($0) })
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sendSequence(JBDProtocol.Command.allCases.map { JBDProtocol.requestFrame($0) },
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spacing: 0.25, thenGiveUpAfter: 2)
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}
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}
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/// Nacheinander alle bekannten Anfragen schicken. Der erste gültige Rahmen
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/// in der Antwort legt den Dialekt fest.
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private func probeDialects() {
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let probes: [Data] = [
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DalyProtocol.requestFrame(.soc),
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JBDProtocol.requestFrame(.basicInfo),
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DalyProtocol.modbusReadFrame(),
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]
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for (index, probe) in probes.enumerated() {
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DispatchQueue.main.asyncAfter(deadline: .now() + Double(index) * 1.5) { [weak self] in
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guard let self, self.dialect == .unknown else { return }
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self.send(probe)
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}
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}
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checkForSilence(after: Double(probes.count) * 1.5 + 1.5)
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}
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/// Kommandos leicht versetzt senden – manche Module verschlucken Anfragen,
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/// die zu dicht aufeinander folgen.
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private func sendSequence(_ frames: [Data]) {
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private func sendSequence(_ frames: [Data], spacing: TimeInterval, thenGiveUpAfter grace: TimeInterval) {
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for (index, frame) in frames.enumerated() {
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DispatchQueue.main.asyncAfter(deadline: .now() + Double(index) * 0.25) { [weak self] in
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DispatchQueue.main.asyncAfter(deadline: .now() + Double(index) * spacing) { [weak self] in
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self?.send(frame)
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}
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}
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checkForSilence(after: Double(frames.count) * 0.25 + 2)
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checkForSilence(after: Double(frames.count) * spacing + grace)
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}
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/// Kommt mehrere Runden nichts Brauchbares zurück, wird der erkannte
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/// Dialekt verworfen und neu gesucht.
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/// Kommt nichts Brauchbares zurück, wird der nächste Kandidat versucht.
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private func checkForSilence(after delay: TimeInterval) {
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DispatchQueue.main.asyncAfter(deadline: .now() + delay) { [weak self] in
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guard let self else { return }
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guard let self, self.peripheral.state == .connected else { return }
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guard !self.hasUsableData else {
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self.silentRounds = 0
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return
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}
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self.silentRounds += 1
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if self.silentRounds >= 3 {
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self.silentRounds = 0
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self.publishDiagnostics()
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// Solange noch kein Protokoll steht, zügig weiterprobieren.
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let limit = self.dialect == .unknown ? 1 : 3
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guard self.silentRounds > limit else { return }
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self.silentRounds = 0
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if self.endpoints.count > 1 {
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self.advanceEndpoint()
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} else {
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self.dialect = .unknown
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self.onStateChange(.failed("Keine verwertbare Antwort vom BMS"))
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self.publishDiagnostics()
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self.onStateChange(.failed("Keine Antwort vom BMS"))
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}
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}
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}
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@@ -168,26 +267,24 @@ final class BMSSession: NSObject {
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}
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private func send(_ data: Data) {
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guard let characteristic = writeCharacteristic else { return }
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let type: CBCharacteristicWriteType =
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characteristic.properties.contains(.writeWithoutResponse) ? .withoutResponse : .withResponse
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peripheral.writeValue(data, for: characteristic, type: type)
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guard let endpoint = currentEndpoint, peripheral.state == .connected else { return }
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sentFrameCount += 1
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peripheral.writeValue(data, for: endpoint.write, type: endpoint.writeType)
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}
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// MARK: - Auswertung
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private func consume(_ data: Data) {
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lastResponse = data
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receivedByteCount += data.count
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buffer.append(contentsOf: [UInt8](data))
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if buffer.count > 512 { buffer.removeFirst(buffer.count - 512) }
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// JBD zuerst: der Rahmen ist durch Start-, Endbyte und Prüfsumme
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// eindeutig und kann nicht mit den Daly-Rahmen verwechselt werden.
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// JBD zuerst: Start-, Endbyte und Prüfsumme machen den Rahmen eindeutig.
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let (jbdFrames, jbdRemainder) = JBDProtocol.extractFrames(from: buffer)
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if !jbdFrames.isEmpty {
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buffer = jbdRemainder
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dialect = .jbd
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silentRounds = 0
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adopt(.jbd)
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for frame in jbdFrames { jbdState.apply(frame) }
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publish(jbdState.snapshot(deviceID: deviceID, rssi: nil), usable: jbdState.hasUsableData)
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return
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@@ -196,8 +293,7 @@ final class BMSSession: NSObject {
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if let start = buffer.firstIndex(where: { $0 == 0xD2 }),
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let registers = DalyProtocol.parseModbusResponse(Array(buffer[start...])) {
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buffer.removeAll()
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dialect = .dalyModbus
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silentRounds = 0
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adopt(.dalyModbus)
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dalyState.apply(registers: registers)
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publish(dalyState.snapshot(deviceID: deviceID, rssi: nil), usable: dalyState.hasUsableData)
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return
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@@ -206,17 +302,26 @@ final class BMSSession: NSObject {
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let (dalyFrames, dalyRemainder) = DalyProtocol.extractA5Frames(from: buffer)
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if !dalyFrames.isEmpty {
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buffer = dalyRemainder
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dialect = .dalyClassic
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silentRounds = 0
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adopt(.dalyClassic)
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for frame in dalyFrames { dalyState.apply(frame) }
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publish(dalyState.snapshot(deviceID: deviceID, rssi: nil), usable: dalyState.hasUsableData)
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return
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}
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// Nichts erkannt – trotzdem melden, damit die Diagnose etwas zeigt.
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// Etwas kam an, ließ sich aber nicht zuordnen: für die Diagnose sichtbar
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// machen, damit sich das Protokoll nachträglich bestimmen lässt.
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publishDiagnostics()
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}
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/// Erster verwertbarer Rahmen: Kandidat und Dialekt stehen fest, ab jetzt
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/// im normalen Takt abfragen.
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private func adopt(_ newDialect: Dialect) {
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silentRounds = 0
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guard dialect != newDialect else { return }
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dialect = newDialect
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beginPolling()
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}
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private func publish(_ snapshot: DeviceSnapshot, usable: Bool) {
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publishDiagnostics()
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guard usable else { return }
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@@ -227,13 +332,30 @@ final class BMSSession: NSObject {
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private func publishDiagnostics() {
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onDiagnostics(BMSDiagnostics(
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dialect: dialect.rawValue,
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serviceUUID: writeCharacteristic?.service?.uuid.uuidString,
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writeUUID: writeCharacteristic?.uuid.uuidString,
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notifyUUID: notifyCharacteristic?.uuid.uuidString,
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endpointLabel: currentEndpoint?.label,
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endpointPosition: endpoints.isEmpty ? nil : .init(endpointIndex + 1, endpoints.count),
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serviceUUID: currentEndpoint?.write.service?.uuid.uuidString,
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gattSummary: gattSummary,
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sentFrames: sentFrameCount,
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receivedBytes: receivedByteCount,
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lastResponseHex: lastResponse.map { $0.map { String(format: "%02X", $0) }.joined(separator: " ") },
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updated: Date()
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))
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}
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/// Menschenlesbarer GATT-Baum für die Diagnose.
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private func appendToSummary(_ service: CBService) {
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gattSummary.append("Dienst \(service.uuid.uuidString)")
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for characteristic in service.characteristics ?? [] {
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var traits: [String] = []
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if characteristic.properties.contains(.read) { traits.append("read") }
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if characteristic.properties.contains(.write) { traits.append("write") }
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if characteristic.properties.contains(.writeWithoutResponse) { traits.append("write-nr") }
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if characteristic.properties.contains(.notify) { traits.append("notify") }
|
||||
if characteristic.properties.contains(.indicate) { traits.append("indicate") }
|
||||
gattSummary.append(" \(characteristic.uuid.uuidString) \(traits.joined(separator: ", "))")
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// MARK: - CBPeripheralDelegate
|
||||
@@ -245,7 +367,14 @@ extension BMSSession: CBPeripheralDelegate {
|
||||
onStateChange(.failed(error.localizedDescription))
|
||||
return
|
||||
}
|
||||
for service in peripheral.services ?? [] {
|
||||
let services = peripheral.services ?? []
|
||||
gattSummary.removeAll()
|
||||
pendingServices = services.count
|
||||
guard pendingServices > 0 else {
|
||||
onStateChange(.failed("Gerät bietet keine Bluetooth-Dienste an"))
|
||||
return
|
||||
}
|
||||
for service in services {
|
||||
peripheral.discoverCharacteristics(nil, for: service)
|
||||
}
|
||||
}
|
||||
@@ -253,37 +382,26 @@ extension BMSSession: CBPeripheralDelegate {
|
||||
func peripheral(_ peripheral: CBPeripheral,
|
||||
didDiscoverCharacteristicsFor service: CBService,
|
||||
error: Error?) {
|
||||
guard error == nil, let characteristics = service.characteristics else { return }
|
||||
|
||||
let writable = characteristics.first {
|
||||
$0.properties.contains(.write) || $0.properties.contains(.writeWithoutResponse)
|
||||
}
|
||||
let notifying = characteristics.first {
|
||||
$0.properties.contains(.notify) || $0.properties.contains(.indicate)
|
||||
}
|
||||
guard let writable, let notifying else { return }
|
||||
|
||||
// Einen bekannten Dienst immer bevorzugen, sonst den erstbesten nehmen.
|
||||
let isPreferred = Self.preferredServices.contains(service.uuid)
|
||||
let alreadyPreferred = writeCharacteristic
|
||||
.flatMap { $0.service?.uuid }
|
||||
.map { Self.preferredServices.contains($0) } ?? false
|
||||
guard writeCharacteristic == nil || (isPreferred && !alreadyPreferred) else { return }
|
||||
|
||||
writeCharacteristic = writable
|
||||
notifyCharacteristic = notifying
|
||||
peripheral.setNotifyValue(true, for: notifying)
|
||||
appendToSummary(service)
|
||||
pendingServices -= 1
|
||||
// Erst wenn alle Dienste durch sind, steht die Kandidatenliste fest.
|
||||
guard pendingServices <= 0 else { return }
|
||||
buildEndpoints()
|
||||
}
|
||||
|
||||
func peripheral(_ peripheral: CBPeripheral,
|
||||
didUpdateNotificationStateFor characteristic: CBCharacteristic,
|
||||
error: Error?) {
|
||||
if let error {
|
||||
onStateChange(.failed(error.localizedDescription))
|
||||
// Dieser Kandidat lässt sich nicht abonnieren – nächsten versuchen.
|
||||
if endpoints.count > 1 {
|
||||
advanceEndpoint()
|
||||
} else {
|
||||
onStateChange(.failed(error.localizedDescription))
|
||||
}
|
||||
return
|
||||
}
|
||||
if characteristic.isNotifying, characteristic == notifyCharacteristic {
|
||||
publishDiagnostics()
|
||||
if characteristic.isNotifying, characteristic == currentEndpoint?.notify {
|
||||
beginPolling()
|
||||
}
|
||||
}
|
||||
@@ -291,7 +409,7 @@ extension BMSSession: CBPeripheralDelegate {
|
||||
func peripheral(_ peripheral: CBPeripheral,
|
||||
didUpdateValueFor characteristic: CBCharacteristic,
|
||||
error: Error?) {
|
||||
guard error == nil, let value = characteristic.value else { return }
|
||||
guard error == nil, let value = characteristic.value, !value.isEmpty else { return }
|
||||
consume(value)
|
||||
}
|
||||
}
|
||||
|
||||
@@ -68,13 +68,26 @@ struct VictronDiagnostics: Hashable {
|
||||
/// greift, und gibt die letzte Rohantwort zum Nachsehen aus.
|
||||
struct BMSDiagnostics: Hashable {
|
||||
var dialect: String
|
||||
/// Welche Schreib-/Notify-Kombination gerade versucht wird.
|
||||
var endpointLabel: String?
|
||||
/// Der wievielte von wie vielen Kandidaten das ist.
|
||||
var endpointPosition: Pair?
|
||||
var serviceUUID: String?
|
||||
var writeUUID: String?
|
||||
var notifyUUID: String?
|
||||
/// Vollständiger Dienst-/Merkmalsbaum des Geräts.
|
||||
var gattSummary: [String]
|
||||
var sentFrames: Int
|
||||
var receivedBytes: Int
|
||||
var lastResponseHex: String?
|
||||
var updated: Date
|
||||
|
||||
struct Pair: Hashable {
|
||||
var index: Int
|
||||
var total: Int
|
||||
init(_ index: Int, _ total: Int) { self.index = index; self.total = total }
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/// Ein Messpunkt für die Verlaufsgrafik.
|
||||
struct HistorySample: Identifiable, Hashable {
|
||||
let id = UUID()
|
||||
|
||||
Reference in New Issue
Block a user