colmi ring: pairs-only support - #336
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adds the colmi ring family (r02/r03/r06/r09, colmi r10) as a notify-class band. no encryption, no handshake — fixed 16-byte checksummed frames over one gatt service. pairs, connects, walks the hr/stress/hrv/activity day cursors and banks every reply frame as raw. nothing is decoded into a metric — declares no signals, same as oura. sleep + spo2 live on a separate gatt service with multi-packet reassembly and are left for later. also gives BandEntry.notify an optional name-matcher, same escape hatch framed bands already have, since this ring advertises a stable name but its service uuid isn't guaranteed to survive a truncated advertising payload.
Reviewer's GuideIntroduces an explicitly experimental, pairs-only Colmi ring adapter that discovers and connects through the primary GATT service, issues battery and seven-day history requests, and stores all replies as raw bytes without decoding signals; sleep/SpO2 handling remains deferred. Sequence diagram for experimental Colmi ring pairing and history capturesequenceDiagram
participant User
participant Picker as DevicePicker
participant HrsLink as HrsLink
participant Ring as ColmiRing
participant Adapter as ColmiAdapter
participant Store as RawSampleStore
User->>Picker: Select Colmi ring
Picker->>HrsLink: Scan and match service or name
HrsLink->>Ring: Connect and discover GATT
HrsLink->>Adapter: run(link)
Adapter->>Ring: Subscribe kColmiNotifyChar
Adapter->>Ring: write(kColmiWriteChar, colmiFrame(kColmiCmdBattery))
Ring-->>Adapter: Battery reply frames
Adapter->>Store: SampleBatch(raw: frames)
loop Seven days
Adapter->>Ring: write HR, stress, HRV history frames
Ring-->>Adapter: Command-tagged reply frames
Adapter->>Store: SampleBatch(raw: frames)
Adapter->>Ring: write activity history frame
Ring-->>Adapter: Activity reply frames
Adapter->>Store: SampleBatch(raw: frames)
end
Flow diagram for Colmi fixed-frame raw reply handlingflowchart LR
A[Build 16-byte frame] --> B[Write to kColmiWriteChar]
B --> C[Receive on kColmiNotifyChar]
C --> D{Reply command matches request?}
D -->|yes| E[Collect until quietTimeout]
D -->|no| F[Drop cross-talk frame]
E --> G[Store raw frames]
G --> H[No decoded signals]
File-Level Changes
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📝 WalkthroughWalkthroughAdds notify-only Colmi ring support. The adapter collects battery and seven-day history replies as raw events, registers Colmi discovery by GATT identifiers or name, and exposes pairing and localized device-picker metadata. ChangesColmi ring support
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🟡 Moderate · up to Colmi pairing and raw-history collection are added, but malformed BLE notifications can abort a sync and name-based discovery can retain an incorrect device classification. These issues should be corrected before merge. Sequence Diagram(s)sequenceDiagram
participant DevicePicker
participant BLEScanner
participant ColmiAdapter
participant ColmiRing
DevicePicker->>BLEScanner: scan for pairable sensors
BLEScanner->>ColmiAdapter: match Colmi registry entry
ColmiAdapter->>ColmiRing: subscribe and write history requests
ColmiRing-->>ColmiAdapter: notify battery and history frames
ColmiAdapter-->>DevicePicker: expose raw SampleBatch and BandNote events
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Hey - I've found 3 issues
Prompt for AI Agents
Please address the comments from this code review:
## Individual Comments
### Comment 1
<location path="lib/ble/adapters/_registry.dart" line_range="460-462" />
<code_context>
timeAnchor: TimeAnchor.arrival,
);
+/// This ring family advertises a stable name — `R0\d_*` (R02/R03/R06/R09) or
+/// `COLMI R10_*` — so matching on it is a fallback for whatever an
+/// advertising payload's service list drops. Whether a real ring's 31-byte
+/// advertising payload also carries `6e40fff0…` is unconfirmed without
+/// hardware, so this is belt-and-suspenders alongside the service filter, the
+/// same role `_nameContainsWhoop` plays for WHOOP 4. Takes the
+/// already-lowercased name.
+bool _looksLikeColmi(String lowercaseName) =>
+ RegExp(r'^r0\d_').hasMatch(lowercaseName) ||
+ lowercaseName.startsWith('colmi r10_');
+
+/// Colmi smart ring family (advertised as `R02_*`, `R03_*`, `R06_*`, `R09_*`,
</code_context>
<issue_to_address>
**issue (bug_risk):** `_looksLikeColmi` classifies every lowercase name matching `r0\d_`, including R00, R01, R04, R05, R07, R08, and arbitrary non-Colmi devices, as a Colmi ring. The fallback therefore assigns the wrong adapter and pairing requirements to unrelated nearby devices.
**Triggers:** When another BLE device advertises a name beginning with an unsupported `R0x_` prefix and its service list is truncated or absent.
**Suggested fix:** Match only the documented model prefixes, such as `r02_`, `r03_`, `r06_`, `r09_`, and `colmi r10_`, or require an additional manufacturer/model check.
```suggestion
bool _looksLikeColmi(String lowercaseName) =>
RegExp(r'^(?:r02_|r03_|r06_|r09_)').hasMatch(lowercaseName) ||
lowercaseName.startsWith('colmi r10_');
```
</issue_to_address>
### Comment 2
<location path="lib/ble/adapters/colmi.dart" line_range="151-154" />
<code_context>
+ Stream<BandEvent> run(BandLink link) async* {
+ final inbox = _Inbox();
+ final sub = link.notify(kColmiNotifyChar).listen(
+ (rec) => inbox.add(Uint8List.fromList(rec.$2)),
+ onDone: inbox.close,
+ onError: (Object _) => inbox.close(),
+ );
+ try {
+ if (await link.write(kColmiWriteChar, colmiFrame(kColmiCmdBattery))) {
</code_context>
<issue_to_address>
**issue (bug_risk):** The notification path assumes every received value is a non-empty, at least 16-byte frame, and indexes `f[0]` and `frames.last[1]` without checking length or checksum. A malformed, truncated, or empty BLE notification raises a range error and terminates the adapter session instead of being rejected or archived safely.
**Triggers:** When the peripheral or BLE stack delivers a truncated notification.
**Suggested fix:** Validate frame length and checksum before indexing, and handle invalid frames without terminating the session.
</issue_to_address>
### Comment 3
<location path="test/adapters/colmi_test.dart" line_range="87-101" />
<code_context>
+ expect(kColmiAdapter.entry.isFramed, isFalse);
+ });
+
+ test('a paged history walk writes a day-cursor request per command and '
+ 'banks every reply as raw, decoding nothing', () async {
+ final events = await _replay(nowSeconds: () => 1_800_000_000);
+ final samples = [
+ for (final e in events)
+ if (e is SampleBatch) ...e.samples,
+ ];
+ // The whole point: bytes are banked, nothing is decoded into a sample.
+ expect(samples, isEmpty);
+
+ final rawFrames = [
+ for (final e in events)
+ if (e is SampleBatch) ...?e.raw,
+ ];
+ expect(rawFrames, isNotEmpty);
+
+ final batteryNotes = events.whereType<BandNote>().where((n) => n.key == 'battery');
</code_context>
<issue_to_address>
**issue (testing):** The adapter walk test never asserts the number, command ids, day cursors, or payloads of the writes, so it passes even if the history loop is removed and only the battery request remains. The purported deterministic-clock test likewise checks only that some event exists and cannot detect an incorrect or missing cursor timestamp.
**Triggers:** When the Colmi history-walk implementation regresses while the battery request still produces an event.
**Suggested fix:** Assert the expected 29 writes, their command sequence, day offsets, activity BCD dates, and the HR timestamp bytes derived from the injected clock.
</issue_to_address>Sourcery assessment
Needs a human reviewer. 3 findings to address first, and if the unverified command layouts, device matching, or reply handling are wrong, the adapter could persist incorrect raw frames or battery values and repeatedly issue ineffective read requests. Reverting prevents further collection, but already banked records would remain and need cleanup or reprocessing.
Blocking findings: lib/ble/adapters/_registry.dart:462, lib/ble/adapters/colmi.dart:154, test/adapters/colmi_test.dart:101
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Actionable comments posted: 2
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Inline comments:
In `@lib/ble/adapters/colmi.dart`:
- Around line 223-225: Update _collect to discard notification frames shorter
than the minimum required length before indexing f[0], and ensure run() cannot
read frames.last[1] from an undersized frame. Preserve collection of valid
command-matching frames while dropping malformed notifications without
terminating the sync session.
In `@lib/ble/hrs_link.dart`:
- Around line 329-331: Update entryIdFor and its caller so service-UUID matches
are distinguished from heuristic nameMatcher matches. Only cache confirmed[id]
when a genuine service match is returned; use nameMatcher results as unconfirmed
fallbacks that are retried on subsequent calls until a service match confirms or
overrides them. Preserve the existing scanForAny placeholder-correction behavior
and use the existing matching symbols rather than introducing unrelated changes.
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test/adapter_signals_registry_test.dartis excluded by!test/**test/adapters/colmi_test.dartis excluded by!test/**test/band_registry_test.dartis excluded by!test/**
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lib/ble/adapters/_registry.dartlib/ble/adapters/colmi.dartlib/ble/hrs_link.dartlib/l10n/app_en.arblib/ui2/pairing/device_picker.dartlib/ui2/profile/devices.dart
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…me-guess as confirmed, assert real write sequence
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Persistent review updated to latest commit 53e68a3 |
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ColmiLink hosts the paired ring the same way OuraLink hosts the ring — connect, drive ColmiAdapter.run(), bank the raw frames, disconnect — but without a key/cursor/anchor to persist since this protocol has none. Wired into the same background-sync piggyback as Oura and into the profile devices screen's sync-now button, and forgetDevice now dispatches to it. Also replies on all 5 open CodeRabbit/Sourcery threads on this PR confirming each finding as already fixed in 53e68a3.
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Persistent review updated to latest commit a0f83ac |
An unsolicited frame (a battery push mid-walk) that fails the length/cmd check was still shrinking the wait to quiet, which could end the collection before the real reply for the requested command arrived.
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User description
pairs, connects, walks the hr/stress/hrv/activity day cursors on the colmi ring family (r02/r03/r06/r09, r10) and banks every reply as raw. no encryption, no handshake — fixed 16-byte checksummed frames on one gatt service. declares no signals, same as oura — nothing here has touched real hardware yet.
sleep + spo2 live on a second gatt service with multi-packet reassembly, left for a later PR.
Summary by Sourcery
Enable experimental Colmi ring pairing and raw history synchronization without declaring unverified health measurements.
New Features:
Bug Fixes:
Enhancements:
Tests:
PR Type
Enhancement
Description
Adds experimental pairing and connection support for the Colmi smart ring family (R02, R03, R06, R09, R10).
Banks raw history replies for battery, HR, stress, HRV, and activity without decoding them into metrics.
Extends device discovery to use a name-matching fallback for devices that drop service UUIDs from their advertising payload.
Adds the Colmi ring to the device picker UI with a disclaimer that it does not yet decode numbers.
Diagram Walkthrough
File Walkthrough
1 files
Add Colmi ring to band registry and define UUIDs4 files
Implement ColmiAdapter for raw history collectionAdd Colmi ring to device picker UIRegister Colmi ring in sensor pairing listAdd localization strings for Colmi ring blurb1 files
Use nameMatcher fallback for device discovery3 files
Update registry test for ColmiAdapterAdd tests for Colmi frame checksums and raw collectionUpdate registry test to expect colmi IDSummary by CodeRabbit