d102205b18
- BLE: 修复Omron设备Indication模式连接(先订阅后配CCCD + forceIndications) + 直连重连
- BLE: 设备断连实时检测(connectionState流→Provider→UI)
- 修复: 血压数据上报后端枚举不匹配(Device→DeviceSync)导致500
- 新增: DELETE /api/health-records/{id} 后端接口
- 设备管理页: 白色主题重设计 + 直连重连 + 实时状态 + Toast通知
- 设备扫描页: 白色主题 + 扫描动画居中 + 已连接等待页面
- 健康记录: 左滑删除(Dismissible) + 同时清理_allRecords和_filtered
- 导航: 修复自定义路由栈下Navigator.pop黑屏bug
- 文档: 医生端合并App完整设计文档(已确认版)
245 lines
8.5 KiB
Dart
245 lines
8.5 KiB
Dart
import 'dart:async';
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import 'dart:math';
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import 'package:flutter/foundation.dart';
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import 'package:flutter_blue_plus/flutter_blue_plus.dart';
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import '../models/bp_reading.dart';
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/// 欧姆龙蓝牙血压计 BLE 服务
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class OmronBleService {
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static const bpServiceUuid = '00001810-0000-1000-8000-00805F9B34FB';
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static const bpMeasurementUuid = '00002A35-0000-1000-8000-00805F9B34FB';
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static const bpFeatureUuid = '00002A49-0000-1000-8000-00805F9B34FB';
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static const dateTimeUuid = '00002A08-0000-1000-8000-00805F9B34FB';
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static const intermediateCuffUuid = '00002A36-0000-1000-8000-00805F9B34FB';
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static const racpUuid = '00002A52-0000-1000-8000-00805F9B34FB';
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BluetoothDevice? _device;
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StreamSubscription<List<int>>? _measurementSub;
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StreamSubscription<BluetoothConnectionState>? _connStateSub;
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final _readingsController = StreamController<BpReading>.broadcast();
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final _connStateController = StreamController<bool>.broadcast();
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Stream<BpReading> get readings => _readingsController.stream;
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Stream<bool> get connectionState => _connStateController.stream;
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bool get isConnected => _device?.isConnected ?? false;
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/// 直接重连已知设备（通过MAC地址）
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Future<bool> reconnectByMac(String mac) async {
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debugPrint('[BLE] 直连设备: $mac');
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final bonded = await FlutterBluePlus.bondedDevices;
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BluetoothDevice? target;
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for (final d in bonded) {
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if (d.remoteId.toString() == mac) {
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target = d;
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break;
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}
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}
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if (target == null) {
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debugPrint('[BLE] 未在已配对设备中找到 $mac');
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return false;
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}
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try {
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await connect(target);
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return true;
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} catch (e) {
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debugPrint('[BLE] 直连失败: $e');
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return false;
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}
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}
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static bool isBpDevice(ScanResult r) {
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final name = [
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r.advertisementData.localName,
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r.device.platformName,
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].where((n) => n.isNotEmpty).join(' ').toUpperCase();
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return name.contains('OMRON') ||
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name.contains('HEM') ||
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name.contains('BLESMART') ||
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name.contains('J735') ||
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name.contains('BPM') ||
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name.contains('BP');
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}
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/// 连接设备并订阅测量数据
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/// 设备连接后会自动发送存储的最后一次测量数据
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Future<void> connect(BluetoothDevice device) async {
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_device = device;
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debugPrint('[BLE] ═══ 连接: "${device.platformName}" ═══');
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_connStateSub = device.connectionState.listen((s) {
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debugPrint('[BLE] 连接状态: $s');
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_connStateController.add(s == BluetoothConnectionState.connected);
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});
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// 1. GATT连接
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await device.connect(autoConnect: false);
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debugPrint('[BLE] ① 已连接, MTU=${device.mtuNow}');
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try { await device.requestMtu(512); } catch (_) {}
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// 2. 发现服务
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final services = await device.discoverServices();
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debugPrint('[BLE] ② 发现${services.length}个服务');
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// 遍历所有服务/特征
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BluetoothService? bpSvc;
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BluetoothCharacteristic? measChar, racpChar;
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for (final s in services) {
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debugPrint('[BLE] 服务: ${s.uuid.str128}');
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for (final c in s.characteristics) {
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final p = <String>[];
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if (c.properties.read) p.add('R');
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if (c.properties.write) p.add('W');
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if (c.properties.notify) p.add('N');
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if (c.properties.indicate) p.add('I');
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debugPrint('[BLE] ${c.uuid.str128} [$p]');
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for (final d in c.descriptors) {
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debugPrint('[BLE] desc: ${d.uuid.str128}');
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}
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}
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if (s.uuid.str128.toUpperCase() == bpServiceUuid.toUpperCase()) bpSvc = s;
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}
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if (bpSvc == null) throw Exception('未找到血压服务0x1810');
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for (final c in bpSvc.characteristics) {
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final u = c.uuid.str128.toUpperCase();
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if (u == bpMeasurementUuid.toUpperCase()) measChar = c;
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if (u == racpUuid.toUpperCase()) racpChar = c;
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}
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if (measChar == null) throw Exception('未找到0x2A35');
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debugPrint('[BLE] ③ 0x2A35: indicate=${measChar.properties.indicate} read=${measChar.properties.read}');
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debugPrint('[BLE] RACP: ${racpChar != null ? "有" : "无"}');
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// ★ 3. 先订阅数据流(在配置CCCD之前!)
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debugPrint('[BLE] ④ 订阅lastValueStream...');
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_measurementSub = measChar.lastValueStream.listen(
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(raw) {
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debugPrint('[BLE] ★★★ 收到数据! ${raw.length}字节 ★★★');
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debugPrint('[BLE] HEX: ${raw.map((b) => b.toRadixString(16).padLeft(2, '0')).join(' ')}');
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_parseReading(raw);
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},
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onError: (e) => debugPrint('[BLE] 流错误: $e'),
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cancelOnError: false,
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);
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// 4. 配置CCCD
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final isIndicate = measChar.properties.indicate;
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final cccdVal = isIndicate ? [0x02, 0x00] : [0x01, 0x00];
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debugPrint('[BLE] ⑤ 配置CCCD → ${isIndicate ? "Indicate" : "Notify"}...');
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var ok = false;
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for (final d in measChar.descriptors) {
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if (d.uuid.str128 == '00002902-0000-1000-8000-00805F9B34FB') {
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final before = await d.read();
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await d.write(cccdVal);
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final after = await d.read();
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ok = after.length >= 2 && after[0] == cccdVal[0] && after[1] == cccdVal[1];
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debugPrint('[BLE] ⑤ CCCD: $before → $after ${ok ? "OK" : "FAIL"}');
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break;
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}
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}
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if (!ok) {
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await measChar.setNotifyValue(true, forceIndications: isIndicate);
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debugPrint('[BLE] ⑤ 降级setNotifyValue, isNotifying=${measChar.isNotifying}');
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}
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// 5. 主动读取缓存数据(设备存储的最后一次测量)
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debugPrint('[BLE] ⑥ 主动读取0x2A35...');
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if (measChar.properties.read) {
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try {
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final data = await measChar.read();
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if (data.isNotEmpty) {
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debugPrint('[BLE] ⑥ 读到${data.length}字节 HEX=${data.map((b) => b.toRadixString(16).padLeft(2, '0')).join(' ')}');
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_parseReading(data);
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} else {
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debugPrint('[BLE] ⑥ 空数据');
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}
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} catch (e) {
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debugPrint('[BLE] ⑥ 读取失败: $e');
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}
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}
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// 6. RACP请求存储记录
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if (racpChar != null) {
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debugPrint('[BLE] ⑦ RACP请求存储记录...');
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try {
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await racpChar.write([0x01, 0x01]); // ReportStoredRecords, All
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debugPrint('[BLE] ⑦ RACP已发送');
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} catch (e) {
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debugPrint('[BLE] ⑦ RACP失败: $e');
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}
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}
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debugPrint('[BLE] ═══ 连接完成, 等待数据 ═══');
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}
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Future<void> disconnect() async {
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_connStateSub?.cancel();
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_connStateSub = null;
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_measurementSub?.cancel();
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_measurementSub = null;
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await _device?.disconnect();
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_device = null;
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debugPrint('[BLE] 已断开');
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}
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void dispose() {
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disconnect();
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_readingsController.close();
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_connStateController.close();
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}
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// ── 解析 BLE 测量数据 ──
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void _parseReading(List<int> raw) {
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debugPrint('[BLE] 解析: flags=0x${raw[0].toRadixString(16)}, len=${raw.length}');
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if (raw.length < 7) { debugPrint('[BLE] 太短,跳过'); return; }
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final flags = raw[0];
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final isKpa = (flags & 0x01) != 0;
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final hasTs = (flags & 0x02) != 0;
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final hasPulse = (flags & 0x04) != 0;
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final hasUid = (flags & 0x08) != 0;
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final hasStatus = (flags & 0x10) != 0;
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int sys = _decodeSFloat(raw[1] | (raw[2] << 8)).round();
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int dia = _decodeSFloat(raw[3] | (raw[4] << 8)).round();
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if (isKpa) { sys = (sys * 7.50062).round(); dia = (dia * 7.50062).round(); }
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int off = 7;
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DateTime ts = DateTime.now();
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if (hasTs && raw.length >= off + 7) {
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ts = DateTime(raw[off] | (raw[off + 1] << 8), raw[off + 2], raw[off + 3],
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raw[off + 4], raw[off + 5], raw[off + 6]);
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off += 7;
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}
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int? pulse;
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if (hasPulse && raw.length >= off + 2) {
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pulse = _decodeSFloat(raw[off] | (raw[off + 1] << 8)).round();
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off += 2;
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}
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String? uid;
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if (hasUid && raw.length > off) { uid = raw[off].toString(); off++; }
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bool bm = false, ir = false;
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if (hasStatus && raw.length >= off + 2) {
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int s = raw[off] | (raw[off + 1] << 8);
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bm = (s & 0x0001) != 0;
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ir = (s & 0x0800) != 0;
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}
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final r = BpReading(systolic: sys, diastolic: dia, pulse: pulse, timestamp: ts,
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userId: uid, isKpa: isKpa, hasBodyMovement: bm, hasIrregularPulse: ir);
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debugPrint('[BLE] ★ $sys/$dia mmHg, pulse=$pulse ★');
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_readingsController.add(r);
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}
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static double _decodeSFloat(int raw) {
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int m = raw & 0x0FFF;
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if (m & 0x0800 != 0) m |= 0xFFFFF000;
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int e = (raw >> 12) & 0x0F;
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if (e & 0x08 != 0) e |= 0xFFFFFFF0;
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return (m * pow(10, e)).toDouble();
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}
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}
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