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fix(gps): make pre-ride check GPS non-blocking & add proactive GNSS hardware warmup

This commit is contained in:
Developer 2026-08-28 13:07:00 -04:00
parent e0a80527e8
commit 64dc635d68
2 changed files with 40 additions and 19 deletions
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43
lib/features/field_test/field_test_pre_ride_check_screen.dart
View File

@ -1,9 +1,10 @@
import 'dart:async';
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:geolocator/geolocator.dart';
import 'package:go_router/go_router.dart';
import '../../database/database.dart';
import '../../services/location_service.dart';
import '../../services/field_test/field_test_logger.dart';
import '../rides/ride_state_machine.dart';
import '../garage/garage_providers.dart';
@ -33,26 +34,40 @@ class _FieldTestPreRideCheckScreenState extends ConsumerState<FieldTestPreRideCh
_recommendedChecks.clear();
});
// 1. GPS Available
// 1. Auto-request / verify Location Permissions & GPS Hardware
final locationService = ref.read(locationServiceProvider);
try {
await locationService.requestPermissions();
final isGpsEnabled = await Geolocator.isLocationServiceEnabled();
final permission = await Geolocator.checkPermission();
final hasPerm = permission == LocationPermission.always || permission == LocationPermission.whileInUse;
final hasPerm = await locationService.hasPermissions();
_requiredChecks['GPS Hardware & Service'] = _CheckResult(
passed: isGpsEnabled && hasPerm,
detail: isGpsEnabled ? (hasPerm ? 'Active & Authorized' : 'Permission Denied') : 'Location Services Disabled',
detail: isGpsEnabled ? (hasPerm ? 'Active & Authorized' : 'Permission Required (Tap to Grant)') : 'Location Services Disabled in Android Settings',
);
} catch (e) {
_requiredChecks['GPS Hardware & Service'] = _CheckResult(passed: false, detail: e.toString());
}
// 2. GPS Accuracy
final logger = ref.read(fieldTestLoggerProvider);
final gpsAcc = logger.lastGpsAccuracy;
_requiredChecks['GPS Accuracy (<15m)'] = _CheckResult(
passed: gpsAcc > 0 && gpsAcc <= 15.0,
detail: gpsAcc > 0 ? '${gpsAcc.toStringAsFixed(1)}m precision' : 'Nominal GPS active (waiting for lock)',
// Warm up GPS fix
try {
final pos = await Geolocator.getLastKnownPosition();
if (pos != null) {
_recommendedChecks['GPS Accuracy (<15m)'] = _CheckResult(
passed: pos.accuracy <= 15.0,
detail: '${pos.accuracy.toStringAsFixed(1)}m precision (${pos.accuracy <= 15.0 ? "Optimal" : "Acquiring satellites"})',
);
} else {
_recommendedChecks['GPS Accuracy (<15m)'] = const _CheckResult(
passed: true,
detail: 'GPS active (acquiring satellite constellation)',
);
}
} catch (_) {
_recommendedChecks['GPS Accuracy (<15m)'] = const _CheckResult(
passed: true,
detail: 'GPS active (acquiring satellites)',
);
}
// 3. IMU Sensor Pipeline
_requiredChecks['IMU & Motion Pipeline'] = const _CheckResult(
@ -61,6 +76,7 @@ class _FieldTestPreRideCheckScreenState extends ConsumerState<FieldTestPreRideCh
);
// 4. Telemetry Heartbeat
final logger = ref.read(fieldTestLoggerProvider);
final rate = logger.currentSampleRateHz;
_requiredChecks['Telemetry Heartbeat (20Hz)'] = _CheckResult(
passed: true,
@ -117,11 +133,6 @@ class _FieldTestPreRideCheckScreenState extends ConsumerState<FieldTestPreRideCh
detail: 'Adequate for 30-60 min ride',
);
_recommendedChecks['Sensor Freshness (<500ms)'] = _CheckResult(
passed: logger.lastGpsAgeMs <= 500,
detail: '${logger.lastGpsAgeMs > 0 ? logger.lastGpsAgeMs : 50}ms latency',
);
_recommendedChecks['Mount Calibration'] = const _CheckResult(
passed: true,
detail: 'Rigid vibration mount verified',

14
lib/services/location_service.dart
View File

@ -105,6 +105,16 @@ class LocationService {
_handleRawPosition(lastPos);
}
// Proactively trigger immediate high-accuracy position to warm up GNSS hardware
Geolocator.getCurrentPosition(
locationSettings: const LocationSettings(
accuracy: LocationAccuracy.bestForNavigation,
timeLimit: Duration(seconds: 4),
),
).then((pos) {
if (!_isDisposed) _handleRawPosition(pos);
}).catchError((_) {});
// Platform-specific LocationSettings
LocationSettings locationSettings;
if (defaultTargetPlatform == TargetPlatform.android) {
@ -200,9 +210,9 @@ class LocationService {
}
bool _isValidPosition(Position position) {
// Allow valid GPS readings with accuracy up to 100m during initial lock
// Allow initial fixes up to 200m so GPS lock begins immediately
final currentSpeed = _emaSpeed ?? position.speed;
final maxAcceptableAccuracy = _lastValidPosition == null ? 120.0 : (currentSpeed > 10.0 ? 80.0 : 65.0);
final maxAcceptableAccuracy = _lastValidPosition == null ? 200.0 : (currentSpeed > 10.0 ? 100.0 : 80.0);
if (position.accuracy > maxAcceptableAccuracy) {
onGpsDiagnostic?.call(