docs(changelog): cut v0.6.7 — provisional charge ETA on plug-in

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
feat(oled): provisional charge ETA on plug-in — no more ~--m wait
2026-05-23 20:39:35 -06:00 · 2026-05-23 20:29:46 -06:00 · 2026-05-23 20:03:54 -06:00 · 2026-05-23 20:03:45 -06:00 · 2026-05-23 19:39:00 -06:00 · 2026-05-23 19:38:51 -06:00
27 changed files with 1672 additions and 349 deletions
@@ -1,4 +1,11 @@
 build
+build-pr
 .vscode
 .idea
 example
+
+# Local/per-user scratch
+.claude/
+.directory
+*.code-workspace
+pr-review-*.md
@@ -0,0 +1,77 @@
+# Bluetooth microphone investigation — current status
+
+**TL;DR:** The DualSense's built-in microphone does **not** work when the controller is paired to this dongle over Bluetooth. It works fine when the controller is connected directly to a host over USB. This is a Sony / DS5-firmware-side limitation we currently can't work around without reverse engineering or BT-sniffer access to PS5 ↔ DS5 traffic. The same limitation is documented in the upstream Linux kernel driver (`drivers/hid/hid-playstation.c` line ~1509: *"Bluetooth audio is currently not supported"*).
+
+This file is a hand-off / research log for the next person who tries.
+
+## What does work
+
+- **Direct USB-C from DS5 → host:** mic enumerates as a UAC1 IN endpoint at 48 kHz / 16-bit / 2 channels on `EP 0x82`, max packet 196 bytes. ALSA recognizes it as `card N: Controller [DualSense Wireless Controller]`. `arecord` captures real audio after raising the `Headset Capture Volume` mixer control (it defaults to 0 dB).
+- **Our dongle's USB descriptor** correctly mirrors the DS5's UAC1 layout — same interfaces, same alt settings, same endpoint addresses, same packet sizes. Verified with `lsusb -v` against a real DS5.
+- **All the firmware-side decode infrastructure for BT mic is in place** (Opus decoder, `mic_fifo` queue, `tud_audio_write` to the IN endpoint, mono → stereo duplication) — see `src/audio.cpp`. It's currently gated behind `if (false)` in `src/main.cpp`'s `on_bt_data()` because we have nothing to feed it.
+
+## What doesn't, and why
+
+The DS5 firmware on the test controller (build date `Jul 4 2025`, queried via feature report 0x20) **does not stream microphone audio over the standard BT-HID L2CAP channels** (PSM 0x11 control + 0x13 interrupt).
+
+What we tried:
+
+1. **Upstream `awalol/DS5Dongle` `mic` branch as reference.** That branch claims to extract a 71-byte Opus packet at `data + 4` of any BT input report where `(data[2] >> 1) & 1` is set. On our DS5 firmware, **bit 1 of byte 2 is never set** (verified across thousands of frames via the `g_31_b2_or` OR mask). The upstream RE was likely done on a different (older) DS5 firmware revision.
+2. **Bit 0 of byte 2** matches roughly all standard input reports — confirmed by reading the supposed "mic prefix" via `0xFD` feature report and seeing live stick X/Y values (not Opus data). Not a mic flag.
+3. **Frame length sweep.** Longest BT 0x31 frame we ever see is 79 bytes — a fully-decoded standard DS5 input report (sticks + IMU + touchpad + battery + sensor timestamp + trailing zeros). No audio bytes appended anywhere.
+4. **Other report IDs.** Counted ALL incoming BT input reports by report ID. Only `0x01` (rare) and `0x31` (common). No 0x33 / 0x35 / 0x36 / 0x39 / etc. The DS5 isn't sending anything mic-shaped on a different ID.
+5. **State configuration matching the kernel.** Set `AllowAudioControl=1`, `AllowMicVolume=1`, `AllowAudioMute=1`, `MicSelect=Internal`, `VolumeMic=0x40`, `MicMute=0`, `AudioPowerSave=0` — exactly what `hid-playstation.c` sets when calling its "Enable microphone" path. DS5 still doesn't stream.
+6. **Bidirectional audio session hypothesis.** Maybe the DS5 only streams mic when there's also active speaker audio (`0x36` packets) flowing. Tested: ran `aplay /dev/zero` simultaneously with `arecord`. No change in BT-side counters, no new report IDs, no longer frames. Disproved.
+7. **State refresh on host UAC1 alt-setting change.** Considered hooking `tud_audio_set_itf_cb(itf=2, alt=1)` to send the DS5 a fresh "enable mic" state update. Not implemented — given the kernel comment and our state matching the kernel's own "enable" sequence, this wouldn't have helped.
+
+What we **did not** try (real next steps if anyone picks this up):
+
+- **SDP browse the DS5** over BT after pairing. Discover what L2CAP PSMs / services it advertises beyond HID. If there's a Sony proprietary audio PSM we haven't subscribed to, that's where mic traffic might live.
+- **Open additional L2CAP channels** (proprietary audio PSM if found, or standard ones like A2DP=0x19 / RFCOMM=0x03) and watch for unsolicited inbound data.
+- **Compare DS5 firmware revisions.** Test with an older DS5 (pre-2024 manufacture) and see if it streams mic over BT — that would tell us whether Sony removed the feature or just nobody documented the protocol. (We only have one DS5; can't test.)
+- **BT sniffer** between a PS5 console and a DS5 during voice chat. Tells us exactly what L2CAP channels and bytes Sony uses for mic. Equipment-intensive (~$50–200 for an Ubertooth or commercial sniffer).
+- **DS5 firmware disassembly.** Legally fraught, almost certainly EULA-violating.
+
+## Strongest hypothesis: the channel is encrypted
+
+The shape of all the negative evidence — kernel maintainers giving up, no public RE project succeeding, our matching every documented "enable" bit and getting nothing — strongly suggests the channel is **encrypted with a session key derived during pairing**, not just transported on an undocumented PSM. Sony's incentives line up perfectly:
+
+- **PR / privacy:** a $40 third-party dongle routing a user's PS5 voice chat to a malicious host is a worst-case PR scenario. Encrypting the mic channel is the obvious defense.
+- **GDPR-class regulation:** voice biometrics from a console controller over plaintext BT is the kind of thing EU regulators ask hard questions about.
+- **Anti-spoofing:** prevents injecting fake mic data into a PS5 session, which is its own threat model.
+
+Mechanism that fits the evidence:
+
+- During pairing, BT Classic SSP produces a link key. The PS5 + DS5 firmware likely run a Sony-proprietary KDF on top of that link key to produce an audio-channel session key.
+- Mic audio is transported on a Sony-allocated proprietary L2CAP PSM (not in the standard BT-SIG ranges) and encrypted with that session key (AES-CCM or similar).
+- A third-party dongle could connect to the PSM if it knew the number, but without the KDF / session key the payload would be opaque encrypted blobs.
+
+**Implication:** a BT sniffer might tell us the PSM and packet timing/sizes, but not the payload contents. Building a PS5-impersonating dongle that derives valid session keys would require either Sony system-software disassembly or DS5 firmware disassembly — legally fraught, and a much bigger undertaking than what this project is set up for.
+
+This re-frames "we can't get mic over BT" from "we haven't tried hard enough" to "the architecture is intentionally hardened against exactly this." That's not nothing — it's a clear answer to give users who ask, and a clear bar to clear if anyone wants to actually pursue it.
+
+## What we built that's useful regardless
+
+These all stay shipped — they're general-purpose audio-debug infrastructure now:
+
+- **`scripts/mic_diag.sh`** with subcommands `status`, `capture [secs]`, `watch`, `bt-trace`. Drives the entire diagnostic loop from the host without needing OLED-relay-through-the-user; reads vendor feature reports via `/dev/hidraw`.
+- **Vendor HID feature report `0xFD`** (32 bytes): BT input-report counter, non-0x31 counter, last seen non-0x31 report ID, OR mask of byte 2 across 0x31 frames, length range, hex prefix of last frame.
+- **Vendor HID feature report `0xFE`** (82 bytes): full content of the longest 0x31 frame seen, for byte-level inspection.
+- **OLED Diagnostics screen** carries BT31/Mic rate + recent frame prefix + opus dec/wrote bytes — useful for any future audio-path debugging at the bench.
+- **`src/audio.cpp`** mic-decode infrastructure (Opus decoder on core0, FIFO, mono → stereo duplication, `tud_audio_write` to IN endpoint). Disabled at the `mic_add_queue` call site, ready to re-enable the moment a real mic trigger is identified.
+- **`src/state_mgr.cpp`** initial state corrected — `VolumeMic` was `0xff` (out of valid range per spec; max is `0x40`), `MuteControl` had all `*PowerSave` bits set which would have power-gated the audio DSP. These corrections don't enable BT mic but they're the right defaults regardless.
+
+## References
+
+- Linux kernel `drivers/hid/hid-playstation.c`. Quoted lines: ~1407–1420 (mic enable/disable), ~1509 (*"Bluetooth audio is currently not supported"*). [Raw source on GitHub mirror](https://raw.githubusercontent.com/torvalds/linux/master/drivers/hid/hid-playstation.c).
+- PSDevWiki [DualSense HID Commands](https://www.psdevwiki.com/ps5/DualSense_HID_Commands) — has factory/manufacturer commands (report IDs 128, 129, 160, 164, 165) for BT patches and audio codec selection, but explicitly notes most "do not work with retail controllers". Not a path forward.
+- Upstream `awalol/DS5Dongle` branch `mic` (commits `9c197fc feat: mic work`, `3829163 mic mono channel`). RE'd a working mic path for an older DS5 firmware revision; we ported the data plumbing but the BT-side trigger differs on current firmware.
+- dualsensectl: `command_microphone on/off` sets `valid_flag0 |= DS_OUTPUT_VALID_FLAG0_AUDIO_CONTROL_ENABLE` and clears `DS_OUTPUT_POWER_SAVE_CONTROL_MIC_MUTE`. Same as what we already do on connect.
+
+## For users asking about the mic
+
+When users report "the mic doesn't work":
+
+- **Plug the DS5 into the host via USB.** Mic works out of the box. You may need to raise the `Headset Capture Volume` mixer control if it defaults to 0 dB.
+- **Over the dongle's Bluetooth pairing, the mic is currently a known limitation** — not something a firmware update on our side can fix without further reverse engineering of the DS5's proprietary BT audio path.
+- The diagnostic tools in `scripts/mic_diag.sh` are available if you want to help reverse engineer this; PRs welcome.
@@ -10,6 +10,118 @@ Format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/). Version

 ---

+## [0.6.7-oled-edition] — 2026-05-23
+
+UF2s attached to [the GitHub release](https://github.com/MarcelineVPQ/DS5Dongle-OLED-Edition/releases/tag/v0.6.7-oled-edition) (built by `.github/workflows/release.yml`).
+
+### Changed
+
+- **Charge ETA now shows a provisional estimate immediately on plug-in.** Instead of sitting on `~--m` for the ~15-20 min until the first 10% step is timed, the Status screen shows a default-rate estimate `~Nm?` (the trailing `?` marks it provisional) the moment charging starts. The `?` drops and the number switches to the measured rate once a clean 10% step completes. Default is ~15 min per 10% step (`kDefaultStepUs`), taper-weighted exactly like the measured path, so the provisional figure is in the right ballpark and self-corrects.
+
+### Companion web tool
+
+- `DS5Dongle-OLED-Config-Web` gains **lightbar controls** (mode dropdown + four favorite-color pickers) in the config view, the provisional charge-ETA token in the OLED preview to match this firmware, and translations for two preview notes that were English-only. Build housekeeping: `tsconfig.tsbuildinfo` is no longer tracked.
+
+---
+
+## [0.6.6-oled-edition] — 2026-05-23
+
+Community-issue follow-ups: configurable OLED idle-ladder thresholds (#5) and a diagnostic counter clarifying the trigger-flow numbers (#6). UF2s attached to [the GitHub release](https://github.com/MarcelineVPQ/DS5Dongle-OLED-Edition/releases/tag/v0.6.6-oled-edition) (built by `.github/workflows/release.yml`). The companion `DS5Dongle-OLED-Config-Web` config tool gains matching screen-timeout controls and is synced to the v0.6.5+ `Config_body` layout (fixes a latent issue where saving via the old web tool would zero the lightbar fields).
+
+### Added
+
+- **Configurable OLED idle-ladder thresholds (issue #5, requested by @TerryFrench).** The dim and off tiers are no longer hardcoded at 2 / 15 min — two new `Config_body` fields `screen_dim_timeout` / `screen_off_timeout` (minutes, `0 = that tier disabled`, range `[0,250]`) are editable on the Settings screen (`ScrDim`/`ScrOff`) and persist to flash. Defaults preserve the previous 2 / 15 ladder; on upgrade the unset fields read as those defaults via the `config_valid()` clamp. The idle timer moved from `time_us_32()` to 64-bit µs so the full 250-min range is representable without the ~71-min wrap. Power users with always-on dongles can bias shorter; status-watchers can bias longer or set `0` to keep a tier lit.
+- **`trig fold` counter on the Diagnostics screen (issue #6).** Counts trigger-bearing `0x02` host reports that arrived while the speaker stream was active and were therefore folded into the `0x36` audio frames (via `state[]`) instead of sent as a standalone `0x31`. Makes `trig_allow == to_bt(trig) + fold` visible, confirming the apparent `trig`/`tx` gap is audio-path folding, not dropped trigger reports.
+
+---
+
+## [0.6.5-oled-edition] — 2026-05-23
+
+Charging UX (Status-screen battery ETA + amber lightbar pulse), persistent and screen-sticky lightbar control, and a charging-aware idle power ladder. UF2s attached to [the GitHub release](https://github.com/MarcelineVPQ/DS5Dongle-OLED-Edition/releases/tag/v0.6.5-oled-edition) (built by `.github/workflows/release.yml`).
+
+### Added
+
+- **Charge ETA on the OLED Status screen.** While the DualSense is charging, the battery line shows an estimated time-to-full (`~43m`) to the right of the battery icon. The DS5 only reports battery in 10 % steps over BT (`interrupt_in_data[52]` low nibble, 0–10; high nibble is power-state, 1 = charging), so a smooth countdown is impossible — instead `sample_charge_eta()` times how long each 10 % step takes and extrapolates the remaining steps. It shows `~--m` while calibrating (the first estimate can't appear until one full step has been timed, ~15–20 min after plug-in), then refines on each subsequent notch. The partial step in progress at plug-in is discarded so the first estimate isn't skewed by a half-measured step; a 3-entry moving average smooths the rest. **Li-ion taper correction:** a flat "time-per-step × steps-left" runs optimistic in the constant-voltage tail, so each measured step is normalised to a bulk-equivalent duration (divide out a per-step weight: 1.0× in the bulk region, 1.5× for 80→90 %, 2.2× for 90→100 %) and the remaining steps are re-weighted — keeping the estimate consistent whether the user plugs in near-empty or near-full. Sampled once per frame from `oled_loop` ahead of the idle power-ladder early-returns, so step timing stays correct even while the panel is dimmed/off or the user is on another screen.
+- **Lightbar settings persist across reboot and stick across every screen.** The selected lightbar mode and the four favorite colors are now saved to the config flash sector (new `Config_body` fields `lightbar_mode` + `lb_fav_{r,g,b}[4]`), so a chosen mode/color survives a power cycle. A new **HOST** mode (the default) hands the LED back to the host/game so the dongle doesn't hijack player-indicator LEDs out of the box; on upgrade from ≤0.6.4 the unset field reads as HOST, preserving prior behavior. Mode/favorite edits made on the Lightbar screen are batched into a single flash write when you navigate away (tracked by a dirty flag) to spare flash endurance.
+- **Lightbar pulses amber-orange while charging.** A slow ~4.6 s breathing pulse (base `(255,100,0)`, sine-enveloped from dim to bright via the existing 32-step LUT) shows charging at a glance from any screen. Implemented in the unified `lightbar_service()` (below) as the top-priority owner of the LED, so it overrides the selected mode while charging and reverts to it when unplugged.
+
+### Changed
+
+- **The OLED no longer fully sleeps while the controller is charging.** The idle power ladder is capped at the Dim tier (the low-power breathing dot) instead of advancing to full Off (`cmd(0xAE)`) when `g_charge_eta.charging` is true. The charge-ETA tracker already runs while the panel is off, but users were unplugging the controller to "wake" the dongle — which reset the ETA calibration and restarted the wait-for-the-next-10%-notch. Capping at the dot tier (which draws ~no current) removes the reason to unplug. Normal Active→Dim→Off behavior resumes once charging stops.
+- **A single `lightbar_service()` now owns the controller LED, every frame, on every screen.** Previously the OLED only drove the lightbar via a transient `0x31` packet sent from inside `render_screen_lightbar()` — so the color was only asserted while that screen was open. The service (run from `oled_loop` ahead of the power-ladder early-returns) instead writes the chosen color into the persistent `state[]` block (`SetStateData` `LedRed/Green/Blue`, via new `state_set_led()`), so it rides every outbound host/audio packet, and also actively pushes a `0x31` when audio is idle so animations keep moving. A new `g_lightbar_override` flag gates `state_update()` so the host's `AllowLedColor` writes can't stomp a firmware-chosen mode. During audio the active `0x31` push is suppressed — the `0x36` frames already carry `state[]`'s LED, and slipping a `0x31` between them would intrude on the load-bearing audio path.
+
+### Fixed
+
+- **OLED idle dim/dot tier now actually engages while a controller is connected.** The activity detector hashed `interrupt_in_data[0..9]` with an exact compare, but the analog sticks jitter by ±1 LSB at rest, so the hash changed every few frames and reset the idle timer — meaning the breathing-dot/dim tier only ever kicked in when no controller was paired. Now it mirrors `bt.cpp`'s inactivity heuristic: the stick bytes' rest band `[120,140]` is collapsed to a constant and the volatile counter byte (`idata[6]`) is skipped, so a resting controller reads as idle. Confirmed against a live `/dev/hidraw` capture (only the left-stick X byte was flickering 129↔128).
+- **Lightbar no longer reverts the instant you leave the Lightbar screen.** Root cause: the OLED's `send_lightbar_color()` wrote a one-off `0x31` packet and never touched the persistent `state[]` block, while the host's `0x02` output reports, every audio frame, and reconnect all re-stamp `state[]` (incl. the LED) into the controller. Off the Lightbar screen the OLED stopped pushing, so the next `state[]`-based packet overwrote the color — which is why saved favorites and animated modes (Rainbow/Breathing/Fade) never "stuck." Now that the lightbar is owned through `state[]` with a host override gate (see Changed), the selected mode holds across screens and through active gameplay/audio.
+
+---
+
+## [0.6.4-oled-edition] — 2026-05-19
+
+Trigger-flow diagnostics (in response to issue #3) + the OLED idle power ladder. UF2s attached to [the GitHub release](https://github.com/MarcelineVPQ/DS5Dongle-OLED-Edition/releases/tag/v0.6.4-oled-edition) (built by `.github/workflows/release.yml`).
+
+### Added
+
+- **OLED idle power ladder.** Replaces the single-tier 5-min auto-dim with a three-stage state machine: at 2 min idle the panel wipes black and a 2×2 "breathing dot" (1 s on / 1 s off) walks through 8 evenly-spaced positions every 30 s; at 15 min idle the SH1107 is sent `cmd(0xAE)` (display off) entirely. Wakes instantly on KEY0/KEY1, controller pair (BT-connect rising edge), or any input-report change. Why this shape: on the Waveshare panel, bench-testing `kDimContrast = 0x10` and `0x02` both produced only ~10 % perceptual reduction (SH1107's contrast register vs apparent brightness is heavily non-linear on this hardware), so the only reliable per-pixel dim available is *rendering fewer pixels*. The breathing dot lights ~4 of 8 192 pixels half the time — roughly a 1 000× drop in cumulative current — while still indicating "the dongle is alive," and the rotating position spreads OLED wear across the panel.
+- **Trigger-flow diagnostic counters on the Diagnostics screen.** `host02` (total `0x02` HID OUT reports from host) / `trig` (those where the host set `AllowRight|LeftTriggerFFB` in `valid_flag0`) / `tx` (forwarded as BT `0x31` sub-`0x10`). Added in response to issue #3 ("trigger tension missing in Death Stranding 2"). Lets the user triage in one game session whether the dongle, the host driver, or the controller is the source of the missing adaptive-trigger effect — without a UART or BT sniffer.
+- **Diagnostics screen now scrolls with the controller D-pad.** Refactored to a row-list (10 rows currently: Uptime / BT state / host02 / trig+tx / BT31 in/s / USB aud/s / BT32 out/s / Mic in/s / Mic dec=&w= / Mic prefix). 5 rows visible at a time; ▲/▼ glyphs at the right edge mark "more above/below." Read-only — no cursor, unlike Settings, since there's nothing to select.
+- **Host-side trigger-flow triage via `scripts/mic_diag.sh bt-trace`.** The firmware's `0xFD` vendor feature report grew a second section (bytes 32–43) with the trigger counters; `bt-trace`'s Python decoder now reads them and prints a one-line verdict — "host driver isn't setting Allow*TriggerFFB" / "trigger Allow bits set but speaker path stole the BT pipe" / "full chain reached the controller". Lets the user diagnose issue #3 without a UART cable or OLED-relay-per-flash.
+- **`README.md` "Diagnostics & debug tooling" section** documents `scripts/mic_diag.sh` and its subcommands. The script existed but was only mentioned inside `BLUETOOTH_AUDIO_NOTES.md` — invisible to anyone who hadn't already read the parked-mic notes.
+
+### Changed
+
+- **`flush_fb()` split.** Internal refactor: `flush_fb_raw()` writes just the framebuffer; `flush_fb()` is now `draw_button_chrome() + flush_fb_raw()`. Lets the dim-tier renderer push the breathing dot without the K0/K1 chrome arrows (no navigation target while the panel is asleep).
+- **Diagnostics row order re-prioritized.** The first 5 rows (always visible without scrolling) cover the most common triage path: Uptime / BT state / `host02` / `trig`+`tx` / `BT31 in/s`. Audio + parked-mic-investigation counters live below the fold.
+
+---
+
+## [0.6.3-oled-edition] — 2026-05-18
+
+Small follow-up to v0.6.2. UF2s attached to [the GitHub release](https://github.com/MarcelineVPQ/DS5Dongle-OLED-Edition/releases/tag/v0.6.3-oled-edition) (built by `.github/workflows/release.yml`).
+
+### Fixed
+
+- **OLED Status header was stuck on `"DS5 Bridge v0.6.0"`.** The string was hardcoded in `src/oled.cpp` and never got bumped per release, so v0.6.1 and v0.6.2 both shipped with stale text on the Status screen. Now driven by a compile-time `FIRMWARE_VERSION` macro set from `CMakeLists.txt`'s `${VERSION}` (which `release.yml` already passes as `-DVERSION="$FIRMWARE_VERSION"`). Single source of truth: the release tag. Local builds without `-DVERSION` show `"dev"` so an untagged build is obvious at a glance.
+- **Web preview's Status header had the same bug.** `src/oled/screens.ts` hardcoded `"v0.5.4"`. Now reads `firmware-latest.json` (already CI-bundled from the GitHub API) at runtime in `OledEmulator.tsx` and writes the short tag (suffix `-oled-edition` stripped) into `state.firmwareVersionLabel`, which `renderStatus()` consumes.
+
+### Documentation
+
+- New `CLAUDE.md` "Versioning — single source of truth" section documents the release ritual (CHANGELOG bump → tag → push → `gh release create`) and the single-source-of-truth flow from tag → CMake → C++ macro → web `firmware-latest.json`. Includes a note about the still-pending `WEB_REPO_DISPATCH_PAT` secret on the firmware repo.
+
+---
+
+## [0.6.2-oled-edition] — 2026-05-18
+
+OLED button-model + visual chrome refactor on top of v0.6.1. UF2s attached to [the GitHub release](https://github.com/MarcelineVPQ/DS5Dongle-OLED-Edition/releases/tag/v0.6.2-oled-edition) (built by `.github/workflows/release.yml`).
+
+### Changed (button model)
+
+- **KEY0 / KEY1 are now strictly navigation on every screen.** KEY0 short-press = next screen, KEY1 short-press = previous screen. KEY1 long-press still cycles OLED brightness (unchanged). The old contextual K1=cycle behavior on Trigger Test (cycle trigger preset) and Lightbar (cycle lightbar mode) moved to **DualSense controller buttons** — Triangle on Trigger Test, R1 on Lightbar. Source of "the Mode label didn't change when I clicked K1" confusion eliminated.
+- **KEY0 double-click reboot → KEY0 + KEY1 simultaneous hold (≥ 1 s).** Rapid forward-navigation kept tripping the double-click timer by accident, soft-rebooting the dongle mid-session. The new two-button chord can't be fat-fingered. `kDoubleClickUs` + `key0_pending_single` state removed; new `chord_held_since_us` + `kChordHoldUs = 1 s`. DS5 PS+Mute hold-2 s remains the headless backup.
+- **Per-screen contextual actions on the controller** mirror the existing Slots / Settings conventions (where Triangle has always meant "commit / switch / save"):
+  - **Trigger Test** — △ rising edge cycles `trigger_preset` and re-applies via `send_trigger_effect()`.
+  - **Lightbar** — R1 rising edge cycles `lb_mode`. (Triangle stays as "save current RGB to favorite slot 0" — the existing favorite-save UX.)
+
+### Changed (visual chrome)
+
+- **Arrow chrome on the left edge of every screen.** `flush_fb()` now paints `>` at `(0, 8)` and `<` at `(0, 49)` so the on-screen labels physically pair with the KEY0 (top) and KEY1 (bottom) buttons. The horizontal `"K0=next K1=back"` footer at y=56 is removed from all 11 screens. Trigger Test footer = `"Tri=cycle"`; Lightbar footer = `"R1=mode"`; Slots and Settings keep their existing contextual hints (`"Tri=switch Sq hold=wipe"`, `"DP nav/adj Tri=save"`). New `kContentX = 6` shifts every screen's content right by 6 px to clear the chrome strip; rectangles, sticks, and the L1/L2 column on Status all repositioned to avoid the chrome `<` glyph painting inside the live left-stick area.
+
+### Added (web preview parity)
+
+- **`src/protocol/ds5BridgeHid.ts` `sendTriggerPreset(preset)`** — builds the DS5 SetStateData payload byte-for-byte from `src/oled.cpp send_trigger_effect()` and pushes via `device.sendReport(0x02, ...)`. The dongle relays it over BT to the paired controller, so cycling Trigger Test in the web preview actually drives the real adaptive triggers.
+- **Web preview mirrors the firmware refactor.** `key1Action()` collapsed to back-nav-only. New rising-edge handlers in `OledEmulator.tsx` detect Triangle / R1 / D-pad from the live controller's input report and dispatch to the appropriate per-screen action. `drawButtonChrome(fb)` paints the `>` / `<` arrows after every render. `flush()` accepts an optional tint color: Slots / Diagnostics / CPU/Clock render in **orange** (`#f59e0b`) when a controller is connected — Chrome WebHID can't expose those reports on a stock DualSense descriptor, so the orange tint + an explanatory paragraph below the canvas flag the values as mock. KEY0/KEY1 buttons in the UI moved to sit visually next to the rendered Pico-OLED-1.3, mirroring the physical board.
+- **Settings cursor on the web** — new `settingsSel` state, `>` cursor mark on the selected row; D-pad up/down on the connected controller moves the cursor (web-preview-only — actual edits + save happen via the dedicated Config tab on the website).
+- **Mock-data temperature tweak** — web Preview's CPU/Clock screen no longer drifts 41–47 °C; jitter is now ±0.4 °C around 33.6 °C (realistic Pico 2 W idle).
+
+### Documentation
+
+- **README "Web Config Tool" section** added near the top, linking https://marcelinevpq.github.io/DS5Dongle-OLED-Config-Web/#config and explaining the three tabs (Flash / Config / OLED Preview). Includes a BOOTSEL mode primer for first-time flashers.
+- **OLED Display Add-on section rewritten.** Screen count 10 → 11 (CPU/Clock added). Cycle order updated. New "Button reference" table covers the strict K0/K1 nav, K1 long-press brightness, and K0+K1 chord reboot. ASCII mockups dropped in favor of consistent web-preview screenshots under `assets/oled/`.
+- **Performance / Overclocking section reworded** to lead with "you don't need to do anything — the overclock is baked into the firmware". The "raise voltage / lower clock if it fails to boot" line is scoped to users compiling from source.
+
+---
+
 ## [0.6.1-oled-edition] — 2026-05-18

 Tagged release of the v0.6.0-oled-edition follow-up. UF2s attached to [the GitHub release](https://github.com/MarcelineVPQ/DS5Dongle-OLED-Edition/releases/tag/v0.6.1-oled-edition) (built by `.github/workflows/release.yml`).
@@ -66,6 +66,8 @@ The development cadence is **one feature per UF2 + checkpoint with the user befo

 **OLED add-on is optional and self-contained:** All 10 screens, the SH1107 SPI driver, the 5×7 font, the icon table, and the input handling live in `src/oled.cpp` (~30 KB). The only outward dependencies are read-only accessors (`bt_is_connected`, `bt_get_addr`, `audio_peak_*`, `bt_get_signal_strength`, the new slot accessors) and the global `interrupt_in_data[63]` (read-only for input visualization). When no OLED is wired, the SPI writes go nowhere — no init check needed.

+**Idle power ladder (`oled_loop` tail):** Three-stage state machine (`OLED_ACTIVE` → `OLED_DIM` → `OLED_OFF`) driven by `last_activity_us`. `kAutoDimUs = 2 min` enters Dim — the regular per-screen render is replaced with `render_dim_pulse()`, which clears the framebuffer and walks a 2×2 dot through 8 positions every 30 s, blinking 1 s on / 1 s off. `kAutoOffUs = 15 min` enters Off — `cmd(0xAE)` puts the SH1107 to sleep and `oled_loop` returns early before rendering. Wakes on KEY0/KEY1 (via `handle_buttons` bumping `last_activity_us`), `bt_is_connected()` rising edge, or any change in the `interrupt_in_data[0..9]` hash. The dim tier uses `flush_fb_raw()` (the chrome-less variant) since there's no nav target while asleep. **Why this shape:** the SH1107 contrast register has a heavily non-linear perceptual curve on the Waveshare panel — even `0x02` looks ~90 % as bright as `0xFF`. The only reliable "dim" available is rendering fewer pixels.
+
 **Multi-slot pairing (Phase G):** Storage is two-tier:

 - **Link keys** stay in BTstack's TLV NVM (4 slots, unchanged from upstream).
@@ -95,6 +97,33 @@ These are non-obvious from the code; they cost time when forgotten.
 - **Inactivity-disconnect uses `packet[3..12]`** in the L2CAP interrupt data path (`src/bt.cpp:l2cap_packet_handler`). It's looking at sticks and DPad/buttons to decide "idle." Don't touch those bytes' layout without updating the heuristic.
 - **The 0x36 BT audio packet layout is load-bearing — speaker + HD haptic actuators silently die without the SetStateData sub-report.** Upstream commit `3a31bd7` (May 2026, "refactor: add SetStateData and audio send priority") moved the `0x10` SetStateData block out of every audio frame and into a one-time L2CAP-open setup. The DualSense hardware requires that sub-report (specifically the `0x7f 0x7f` Headphones + Speaker volume bytes) at `pkt[11..75]` of every `0x36` frame, or the actuators stop producing output even though USB and BT byte counts look fine. Our fork keeps `state_data[63]` in `src/audio.cpp` and re-asserts it on every frame; the pre-3a31bd7 packet layout is: state_data at `pkt[11..75]`, haptic at `pkt[76..141]`, speaker format at `pkt[142]`, opus payload at `pkt[144..343]`. If you rebase onto an upstream that has the refactor and don't preserve this restoration, speaker + HD haptics silently break. The `scripts/test_speaker.sh` helper + the `USB aud / BT 0x32` counters on the OLED Diagnostics screen are the regression tripwire — if bytes are flowing but you hear nothing, look at packet contents not flow. Upstream PR #93 is tracking a proper unified fix; ours is the pre-refactor revert applied just to `audio.cpp`. Same fix was shipped independently by `loteran/DS5Dongle` (commit `c7a8d3c`).

+## Versioning — single source of truth
+
+The release tag is the **only** place the version is written. Everything else flows from it:
+
+- **Release tag** (e.g. `v0.6.2-oled-edition`) → created with `git tag` then `gh release create`.
+- **`.github/workflows/release.yml`** picks the tag up as `$FIRMWARE_VERSION` and passes it to CMake via `-DVERSION="$FIRMWARE_VERSION"`.
+- **`CMakeLists.txt`** exposes it to C++ as a compile-time macro:
+  ```cmake
+  target_compile_definitions(ds5-bridge PRIVATE FIRMWARE_VERSION="${VERSION}")
+  ```
+  Local builds without `-DVERSION=...` get the default `"dev"` — that's a deliberate visual signal so an untagged build is obvious on the OLED Status header.
+- **`src/oled.cpp` `render_screen()`** renders `"DS5 Bridge " FIRMWARE_VERSION` for the Status screen header. No string literal for the version exists anywhere else in the firmware source.
+- **Web preview** (`DS5Dongle-OLED-Config-Web`) reads the same tag at runtime from `public/firmware-latest.json`, which CI bundles in `.github/workflows/deploy.yml`'s "Bundle latest firmware UF2 from GitHub releases" step (it pulls from `MarcelineVPQ/DS5Dongle-OLED-Edition/releases/latest` via the GitHub API). `OledEmulator.tsx` fetches that JSON on mount and writes the short form (suffix `-oled-edition` stripped) into `state.firmwareVersionLabel`, which `screens.ts:renderStatus` consumes.
+
+**The release ritual** is therefore:
+
+1. Update `CHANGELOG.md` — move `[Unreleased]` content into a new `[X.Y.Z-oled-edition]` section dated today.
+2. Commit the CHANGELOG bump.
+3. `git tag -a vX.Y.Z-oled-edition -m "..."`
+4. `git push origin master && git push origin vX.Y.Z-oled-edition`
+5. `gh release create vX.Y.Z-oled-edition -R MarcelineVPQ/DS5Dongle-OLED-Edition --title "vX.Y.Z — OLED Edition" --notes "..."`
+6. CI builds the UF2s (~5–7 min), uploads them with SHA256SUMS, edits the release notes to append checksums, and (when `WEB_REPO_DISPATCH_PAT` is configured on the firmware repo — currently unset, see below) fires a `repository_dispatch` event to the web repo to refresh `firmware-latest.json`. Without the secret, the next push to the web repo's `master` does the refresh instead.
+
+There is **no other place** to edit the version. If you find a hardcoded version string in source (`"v0.6.0"`, `"v0.5.4"`, etc.), it's a bug — replace it with the macro / JSON lookup.
+
+**Known follow-up:** `WEB_REPO_DISPATCH_PAT` secret is unset on the firmware repo, so the firmware-release → web-rebuild dispatch is currently silently no-op'd (peter-evans/repository-dispatch with continue-on-error). The web bundle still updates via push events to the web repo's master, but not automatically on every firmware release.
+
 ## Git / branch model

 - **`master` (origin)** = `MarcelineVPQ/DS5Dongle-OLED-Edition` (this fork's primary branding, what users download).
@@ -109,6 +138,8 @@ When asked to modify behavior, the *first* file to read is usually one of:

 - New BT pairing / connection state behavior → `src/bt.cpp` (HCI + L2CAP event handlers).
 - New OLED screen or change to existing one → `src/oled.cpp`.
+- New diagnostic counter on the OLED Diagnostics screen → bump `kNumDiagRows` in `src/oled.cpp` and add a `case` to `format_diag_row()` (single switch, one row per case). The screen scrolls automatically; no D-pad wiring needed. Counters that need rate-per-second arithmetic should be sampled in `sample_diag_rates()` and read from `g_diag_rates`. Counter globals themselves typically live in `src/main.cpp` next to `g_bt_31_packets` etc. with `extern` declarations near the top of `src/oled.cpp`.
+- Host-side diagnostics → `scripts/mic_diag.sh` (Linux only, reads `/dev/hidraw` directly). Subcommands: `status` / `capture [secs]` / `watch` / `bt-trace`. `bt-trace` reads the firmware's `0xFD` vendor feature report (defined in `src/cmd.cpp`'s `tud_hid_get_report_cb`), which currently exposes BT-input counters + the host-output trigger-flow counters. To add a new counter visible to `bt-trace`: extend the `0xFD` payload in `src/cmd.cpp` (bump `want`, write at the new offset), bump `IOCTL_SIZE` in `bt_trace()` of the script, and add the field to its `decode()` dict. The `0xFD` report ID is not declared in the HID descriptor (Linux hidraw ioctls don't enforce that; WebHID would reject undeclared IDs, which is why config goes through `0xF6`).
 - New persistent config field → `src/config.h` (struct), `src/config.cpp:config_valid()` (defaults + clamping), `src/oled.cpp:format_settings_item()` (UI), `src/oled.cpp:settings_adjust()` (D-pad ▶◀ behavior). Update `CHANGELOG.md`.
 - USB descriptor or interface change → `src/usb_descriptors.cpp` + `src/tusb_config.h`.
 - Audio / haptic path → `src/audio.cpp`. **Don't** add stack arrays sized smaller than the resampler / Opus expects (this is the C1 bug that caused the long-standing "audio stuttering" issue — fix landed in upstream `5b04cbd`, but the lesson stands).
@@ -146,6 +146,14 @@ if(WAKE_DEBUG)
 endif()
 set(VERSION "dev" CACHE STRING "Program version string")

+# Expose VERSION to firmware C++ as FIRMWARE_VERSION so src/oled.cpp's
+# Status header always reflects the release tag (set by release.yml via
+# -DVERSION="$FIRMWARE_VERSION"). Local builds without -DVERSION show
+# "dev" — visible signal that you're not on a tagged release.
+target_compile_definitions(ds5-bridge PRIVATE
+        FIRMWARE_VERSION="${VERSION}"
+)
+
 set_target_properties(ds5-bridge PROPERTIES OUTPUT_NAME "ds5-bridge-oled")
 pico_set_program_name(ds5-bridge "ds5-bridge-oled")
 pico_set_program_version(ds5-bridge "${VERSION}")
@@ -6,6 +6,26 @@

 > **OLED Edition** is a fork of **[awalol/DS5Dongle](https://github.com/awalol/DS5Dongle)** (upstream) that adds an optional Pico-OLED-1.3 128×64 display add-on with 11 screens (status, 4-slot multi-controller pairing, lightbar color picker with favorites and effect presets, trigger test, gyro tilt, touchpad, diagnostics, CPU/clock, BT signal strength, audio VU meters, and a persistent settings menu), plus a DS5 button-combo soft-reboot. Upstream is the authoritative source for the core bridge firmware; this fork tracks it and layers add-on features on top.

+---
+
+## 🛠️ Web Config Tool
+
+**[→ Open the OLED Edition Web Config](https://marcelinevpq.github.io/DS5Dongle-OLED-Config-Web/#config)**
+
+The web tool is a one-stop shop — **no installs, no command line, no `picotool`**. A brand-new Pico 2 W can go from "just out of the box" to fully flashed and configured without ever leaving the browser:
+
+- **Flash Firmware tab** — put the Pico in **BOOTSEL mode**, then click *Connect to Pico* in the browser and *Flash now*. The site bundles the latest release UF2, or you can load a local `.uf2` you've built yourself. Powered by WebUSB.
+
+  > **What is BOOTSEL mode?** It's the Pico's built-in flashing mode. To enter it: press and hold the small white button labeled **BOOTSEL** on the Pico, *then* plug the USB cable in (or, if it's already plugged in, briefly disconnect and reconnect while holding BOOTSEL). The Pico will appear to your computer as a removable drive — that's how you know it's in BOOTSEL mode. After the web tool flashes the firmware, the Pico auto-reboots into normal mode and is ready to use.
+- **Config tab** — once the dongle is flashed and reconnected, edit haptics gain, speaker volume, polling rate, audio auto-haptics mode, and the rest of the persistent settings; save to the dongle's flash with one click. Powered by WebHID.
+- **OLED Preview tab** — pixel-perfect emulation of all 11 OLED screens. Use the in-page KEY0/KEY1 buttons (or the controller's △ / R1 / D-pad when a DualSense is paired) to navigate. Adaptive triggers actually fire on the controller when you cycle the Trigger Test preset.
+
+Works in any Chromium-based browser (Chrome, Edge, Brave, Opera). Firefox + Safari don't expose WebHID or WebUSB, so flashing and live config aren't available there — the OLED Preview still renders with mock data.
+
+> Source for the web tool: **[MarcelineVPQ/DS5Dongle-OLED-Config-Web](https://github.com/MarcelineVPQ/DS5Dongle-OLED-Config-Web)** (fork of [awalol/ds5dongle-config-web](https://github.com/awalol/ds5dongle-config-web)).
+
+---
+
 ## Overview

 This project enables the Raspberry Pi Pico2W to function as a Bluetooth bridge for the DualSense controller, allowing wireless connectivity with enhanced haptics support.
@@ -26,8 +46,8 @@ This project enables the Raspberry Pi Pico2W to function as a Bluetooth bridge f
 - **4-slot persistent multi-controller pairing** — bond up to four DualSenses, switch between them from the OLED, slot 0 reconnects automatically on boot
 - **Lightbar color picker** with 4 user favorite slots + breathing / rainbow / fade effect presets
 - **Persistent settings menu** for the 8 firmware config fields (haptics gain, speaker volume, polling rate, etc.) with hold-to-confirm Reset and Wipe-all-slots actions
- **OLED brightness control + auto-dim** after 5 min idle (extends OLED life)
- **Soft-reboot** without unplugging USB via DS5 `PS + Mute` hold (works headless) or OLED KEY0 double-click
+- **OLED idle power ladder** — manual brightness cycle (KEY1 long-press), automatic deep-dim with a small breathing dot at 2 min idle, full display-off at 15 min idle. Wakes instantly on button, controller pair, or input. Real burn-in protection, not just a contrast tweak.
+- **Soft-reboot** without unplugging USB via DS5 `PS + Mute` hold (works headless) or **KEY0 + KEY1 held together for 1 s** on the OLED add-on (replaces the older KEY0 double-click gesture, which was easy to fire by accident while paging quickly)
 - **Audit pass on the core bridge** — critical stack-overflow fix in the audio path (resolves long-standing "audio stuttering"), security hardening, watchdog, length validation across HID/L2CAP boundaries (see [CHANGELOG.md](./CHANGELOG.md))

 ## Hardware
@@ -124,19 +144,22 @@ To opt out at build time, configure with `-DENABLE_BATT_LED=OFF`. Default is ON.

 - Overclocking to 320 MHz @ 1.20 V is **required** for stable BT pairing. Dropping voltage to 1.10 V or clock to stock breaks the CYW43 PIO SPI bus and BT stops working. A small heatsink on the RP2350 is recommended for sustained gameplay.
 - HD haptics may not fire in every game on Linux + Steam; this is game-side (some titles only send HD-haptic audio under Windows-specific APIs). Tested working in Spider-Man Remastered; not delivered in Ghost of Tsushima — same firmware, same controller.
+- **DualSense microphone does not work over the Bluetooth pairing.** This is a Sony / DS5-firmware-side limitation also documented in the upstream Linux kernel driver (`drivers/hid/hid-playstation.c` line ~1509: *"Bluetooth audio is currently not supported"*). The mic works fine when the controller is connected directly to the host via USB-C. See [BLUETOOTH_AUDIO_NOTES.md](./BLUETOOTH_AUDIO_NOTES.md) for the full investigation log + what's already wired firmware-side if a future contributor cracks the BT-side trigger.

 ## Performance / Overclocking

-Due to encoding requirements, the Pico2W must be overclocked:
+**You don't need to do anything for this — the overclock is baked into the firmware.** When you flash a UF2 from this repo, the Pico 2 W boots at the settings below automatically. There is no separate tool to run, no config file to edit, no fuses to blow.

-Current settings:
+Baked-in settings:

- Voltage: 1.2V
- Frequency: 320 MHz
+- **Voltage: 1.20 V** (`vreg_set_voltage(VREG_VOLTAGE_1_20)`)
+- **Clock: 320 MHz** (`set_sys_clock_khz(SYS_CLOCK_KHZ, true)`)

-If your device fails to boot:
+Why it's required: at stock clock/voltage the CYW43 PIO SPI bus (the path the firmware uses to talk to the on-board Bluetooth chip) is unreliable and pairing fails. 320 MHz @ 1.20 V is the lowest combination we've verified to produce a stable BT link on this board.

- Increase voltage slightly or Reduce CPU frequency
+If your device fails to boot a build you compiled yourself (unusual — only relevant when you've changed source), try increasing voltage slightly or lowering the clock in `src/main.cpp`. End users running official UF2 releases should not need to touch this.
+
+A small heatsink on the RP2350 is **recommended for sustained gameplay** but not required for pairing or short sessions.

 ## Build Instructions

@@ -163,59 +186,59 @@ Build flags worth knowing:
 - `-DENABLE_SERIAL=ON` — route printf to USB CDC for debugging (default OFF; releases UART for production builds).
 - `-DPICO_W_BUILD=ON` — build for the original Pico W (drops audio, lowers clock). Default targets Pico 2 W.

+## Diagnostics & debug tooling
+
+Two ways to triage bridge issues — on-device via the OLED Diagnostics screen, and host-side via `scripts/mic_diag.sh` (Linux). The host-side path is faster: no screen-switching, no flash cycle, runs while the controller is in active use.
+
+```
+# One-shot snapshot — is the dongle on USB? Did ALSA enumerate it? Is the
+# capture stream live? Is a controller currently paired?
+scripts/mic_diag.sh status
+
+# 3-second arecord on the mic IN endpoint — reports peak / RMS / non-zero
+# count so we can tell "stream is silent" from "stream is producing audio".
+scripts/mic_diag.sh capture 3
+
+# Same as `status` but in a loop, prints only on state change. Useful for
+# catching the exact second pairing completes or audio streams open / close.
+scripts/mic_diag.sh watch
+
+# Live read of the firmware's 0xFD vendor feature report (via /dev/hidraw):
+# BT input counts + rates, last seen non-0x31 IDs, byte prefixes, AND the
+# trigger-flow counters (host 0x02 received / with AllowTriggerFFB set /
+# forwarded to BT). bt-trace prints a verdict — "host driver isn't sending
+# trigger Allow bits" vs "forwarded but controller didn't actuate" — which
+# is what would otherwise need a USB protocol analyzer.
+scripts/mic_diag.sh bt-trace
+```
+
+Originally written to triage the parked DS5 BT-microphone investigation (see [BLUETOOTH_AUDIO_NOTES.md](./BLUETOOTH_AUDIO_NOTES.md)). The `0xFD` feature report and `bt-trace` decoder now also carry the trigger-flow counters added for [issue #3](https://github.com/MarcelineVPQ/DS5Dongle-OLED-Edition/issues/3) (missing adaptive trigger tension in some games).
+
 ## OLED Display Add-on (optional)

 If you plug a [Waveshare Pico-OLED-1.3](#hardware) onto the Pico2W's headers, the firmware drives it automatically as a live status display. No configuration needed — the firmware no-ops gracefully when no OLED is present.

 ### Boot splash (1.5 s on power-on)

-```
-┌──────────────────────────────┐
-│                              │
-│         DS5 Bridge           │
-│         Pico2W + OLED        │
-│                              │
-└──────────────────────────────┘
-```
+Centered firmware version on a blank screen for 1.5 seconds, then jumps to the Status screen.

-### Ten screens, cycled with KEY0 on the add-on
+### Eleven screens, cycled with KEY0 on the add-on

-Cycle order: **Status → Slots → Lightbar → Trigger Test → Gyro Tilt → Touchpad → Diagnostics → RSSI → VU Meters → Settings →** wrap. KEY0 short-press steps forward. KEY1 short-press steps backward (with two contextual exceptions, see the table at the end).
+Cycle order: **Status → Slots → Lightbar → Trigger Test → Gyro Tilt → Touchpad → Diagnostics → CPU/Clock → BT Signal → VU Meters → Settings →** wrap. **KEY0 short-press steps forward; KEY1 short-press steps backward** — on *every* screen. Per-screen interactions (cycling the trigger preset, cycling the lightbar mode, navigating the Settings cursor, switching slots) live on the **DualSense controller buttons**, never on KEY0/KEY1, so the two physical buttons on the OLED add-on always mean the same thing.
+
+Every screen also paints **`>`** at the top-left edge (next to KEY0) and **`<`** at the bottom-left edge (next to KEY1) so the on-screen labels physically pair with the buttons.

 #### 1. Status

 Connection state, paired DualSense BD address, battery % with bar (`+` charging / `*` complete / `!` error), live analog stick positions, D-pad, face buttons (△ ◯ ✕ □), L1/R1, and L2/R2 analog trigger fill bars. The link indicator and battery use small pixel icons.

-```
-┌──────────────────────────────┐
-│ DS5 Bridge v0.6.0         ●  │
-│ 14:3A:9A:FF:D9:F9            │
-│ 87%+ ╔══════════════╗        │
-│      ║██████░░░░░░░░║▌       │
-│ ┌────┐  L1    △     R1 ┌────┐│
-│ │ ·• │  L2  ○   □  R2  │ ·• ││
-│ │    │   ▌    ✕     ▌  │    ││
-│ └────┘                  └────┘│
-└──────────────────────────────┘
-```
-
-<img src="./assets/main_screen_01.jpeg" alt="Status screen on the OLED" width="420">
+<img src="./assets/oled/oled_sc01.jpg" alt="Status screen on the OLED" width="420">

 #### 2. Slots

 Persistent 4-slot multi-controller pairing. Browse stored controllers, switch active slot, or wipe a single slot. `>` is the cursor, `*` marks the currently active slot.

-```
-┌──────────────────────────────┐
-│ Slots         [s0 ON]        │
-│ >0* 14:3A:9A:FF:D9:F9        │
-│  1  (empty)                  │
-│  2  (empty)                  │
-│  3  (empty)                  │
-│                              │
-│ Tri=switch Sq hold=wipe      │
-└──────────────────────────────┘
-```
+<img src="./assets/oled/oled_sc02.jpg" alt="Slots screen on the OLED" width="420">

 - **D-pad ▲▼** — move cursor across slots 0–3
 - **△** — switch to the cursor slot (disconnect current, reconnect to slot's stored controller)
@@ -226,42 +249,17 @@ Persistent 4-slot multi-controller pairing. Browse stored controllers, switch ac

 Tilt the controller on each axis to dial in R / G / B; the firmware sends the resulting color to the DualSense's actual lightbar at 10 Hz, so the lightbar IS the visual preview (the OLED is monochrome).

-```
-┌──────────────────────────────┐
-│ Lightbar        [LIVE]       │
-│ R:128 G: 77 B:200            │
-│ ████░░░  ██░░░░░  ██████░░   │
-│  (R)     (G)      (B)        │
-│ Sv: T=0 C=1 X=2 S=3          │
-│ Tilt = R/G/B                 │
-│ K0=next K1=cycle             │
-└──────────────────────────────┘
-```
-
-<img src="./assets/lightbar_01.jpeg" alt="Lightbar color picker on the OLED" width="420">
+<img src="./assets/oled/oled_sc03.jpg" alt="Lightbar color picker on the OLED" width="420">

 - Press **△ ◯ ✕ □** on the controller to **save** the current color into favorite slot 0 / 1 / 2 / 3
- Press **KEY1** to cycle the mode tag: `[LIVE]` → `[FAV0]` → `[FAV1]` → `[FAV2]` → `[FAV3]` → effects (Breathing / Rainbow / Fade) → back to `[LIVE]`
+- Press **R1** on the controller to cycle the mode tag: `[LIVE]` → `[FAV0]` → `[FAV1]` → `[FAV2]` → `[FAV3]` → effects (Breathing / Rainbow / Fade) → back to `[LIVE]`
 - Default favorites: Red, Green, Blue, White

 #### 4. Trigger Test

-KEY1 cycles seven adaptive trigger effects applied to both L2 and R2. Pull each trigger to feel the effect.
+Press **△** on the controller to cycle seven adaptive trigger effects applied to both L2 and R2. Pull each trigger to feel the effect.

-```
-┌──────────────────────────────┐
-│ Trigger Test                 │
-│ Mode: Weapon                 │
-│ L2: 127   R2:  42            │
-│                              │
-│ ████░░░░░░     ██░░░░░░░░    │
-│  (L2 pull)      (R2 pull)    │
-│                              │
-│ K0=next K1=cycle             │
-└──────────────────────────────┘
-```
-
-<img src="./assets/triggertest_01.jpeg" alt="Trigger Test screen on the OLED" width="420">
+<img src="./assets/oled/oled_sc04.jpg" alt="Trigger Test screen on the OLED" width="420">

 Cycle order: **Off → Feedback → Weapon → Vibration → Bow → Gallop → Machine Gun → Off …** Effect parameters bitpacked per [dualsensectl](https://github.com/nowrep/dualsensectl)'s reverse-engineering, all at max strength.

@@ -269,69 +267,47 @@ Cycle order: **Off → Feedback → Weapon → Vibration → Bow → Gallop →

 Live X/Y/Z accelerometer values with a 40×40 crosshair box. Tilt the controller and the dot tracks in real time.

-```
-┌──────────────────────────────┐
-│ Gyro Tilt                    │
-│ X +123  Y -456  Z +8123      │
-│         ┌────────┐           │
-│         │   │    │           │
-│         │───•────│           │
-│         │   │    │           │
-│         └────────┘           │
-└──────────────────────────────┘
-```
-
-<img src="./assets/gyro_tilt_01.jpeg" alt="Gyro Tilt screen on the OLED" width="420">
+<img src="./assets/oled/oled_sc05.jpg" alt="Gyro Tilt screen on the OLED" width="420">

 #### 6. Touchpad

 Live render of the touchpad surface. Dots appear at current finger positions; the count updates as fingers touch / leave.

-```
-┌──────────────────────────────┐
-│ Touchpad                     │
-│ ┌──────────────────────────┐ │
-│ │    •              •      │ │
-│ │                          │ │
-│ └──────────────────────────┘ │
-│ Fingers: 2                   │
-│                              │
-│ K0=next                      │
-└──────────────────────────────┘
-```
-
-<img src="./assets/touchpad_01.jpeg" alt="Touchpad screen on the OLED" width="420">
+<img src="./assets/oled/oled_sc06.jpg" alt="Touchpad screen on the OLED" width="420">

 #### 7. Diagnostics

-Uptime, BT state, and stub counters for HCI errors / audio FIFO drops / opus FIFO drops (always 0 in this build — kept for future wiring).
+Scrollable list of live counters — uptime, BT state, host → BT trigger flow (`host02` / `trig` / `tx`), BT 0x31 input rate, USB audio frames/sec, BT 0x32 packets/sec, and parked mic-investigation counters at the bottom. Controller D-pad ▲/▼ scrolls; tiny `^` / `v` glyphs at the right edge mark "more above/below." Read-only, so no cursor. Useful for verifying the bridge is moving bytes without needing a UART cable.

-```
-┌──────────────────────────────┐
-│ Diagnostics                  │
-│ Up: 0h 14m 22s               │
-│ HCI errs:    0               │
-│ Aud drops:   0               │
-│ Opus drops:  0               │
-│ BT: connected                │
-│                              │
-│ K0=next                      │
-└──────────────────────────────┘
-```
+The same counters are also exported on HID feature report `0xFD` for host-side tooling — see `scripts/mic_diag.sh bt-trace` below.

-<img src="./assets/diagnostics_01.jpeg" alt="Diagnostics screen on the OLED" width="420">
+<img src="./assets/oled/oled_sc07.jpg" alt="Diagnostics screen on the OLED" width="420">

-#### 8. RSSI
+#### 8. CPU / Clock

-Live Bluetooth signal strength of the active link, in dBm with a bar. Closer to 0 dBm is stronger; −90 dBm is weak.
+Live RP2350 vitals: configured (`Set`) and actually-running (`Real`) system clock measured against the crystal reference, core voltage read back from the regulator, and on-die temperature (256-sample average + slow EMA so the value tracks the real die temp rather than ADC noise).

-#### 9. VU Meters
+<img src="./assets/oled/oled_sc08.jpg" alt="CPU / Clock diagnostics screen on the OLED" width="420">
+
+The same telemetry is also exported on HID feature report `0xFC` for tooling.
+
+#### 9. BT Signal
+
+Live Bluetooth signal strength of the active link, in dBm with a bar. Closer to 0 dBm is stronger; −90 dBm is weak. Includes a qualitative label (Poor / Fair / Good / Excellent).
+
+<img src="./assets/oled/oled_sc09.jpg" alt="BT Signal screen on the OLED" width="420">
+
+#### 10. VU Meters

 Live peak meters for the speaker and haptic audio paths. Useful for verifying audio routing without the controller being plugged in to a host.

-#### 10. Settings
+<img src="./assets/oled/oled_sc10.jpg" alt="VU Meters screen on the OLED" width="420">

-Persistent config editor. D-pad ▲▼ moves the selection, ▶◀ adjusts values, △ saves to flash. Includes the 8 firmware-config fields (haptics gain, speaker volume, inactive timeout, etc.), the Audio Auto Haptics controls, and two hold-to-confirm actions:
+#### 11. Settings
+
+Persistent config editor. D-pad ▲▼ moves the selection, ▶◀ adjusts values, △ saves to flash. Includes the firmware-config fields (haptics gain, speaker volume, inactive timeout, polling rate), the Audio Auto Haptics controls, and two hold-to-confirm actions:
+
+<img src="./assets/oled/oled_sc11.jpg" alt="Settings screen on the OLED" width="420">

 - **AutoHap Off / Fallback / Mix / Replace** — selects the Audio Auto Haptics mode. Default `Fallback` fires derived rumble only when the game sends no native haptic data (e.g. Ghost of Tsushima on Linux); games that *do* send native haptics (Spider-Man Remastered) pass through unchanged. `Mix` adds derived on top of native, `Replace` ignores native entirely, `Off` disables.
 - **AH Gain N%** — derived-signal gain, 0–200 % in 10 % steps. Default 100 %.
@@ -339,15 +315,18 @@ Persistent config editor. D-pad ▲▼ moves the selection, ▶◀ adjusts value
 - **Reset to defaults** — hold △ for 2 s to revert all config fields
 - **Wipe all slots** — hold △ for 2 s to drop all 4 paired controllers + all BTstack link keys

-### KEY1 behavior by screen
+### Button reference

-| Screen | KEY1 short-press action |
+The two physical buttons on the OLED add-on are **strictly navigation**:
+
+| Button | Action |
 |---|---|
-| Status, Slots, Gyro Tilt, Touchpad, Diagnostics, RSSI, VU Meters, Settings | Step **backward** one screen (mirror of KEY0's forward step) |
-| Trigger Test | Cycle the trigger effect preset |
-| Lightbar Color Picker | Cycle between LIVE preview, the 4 favorite slots, and the effect presets |
+| **KEY0** short-press | Next screen (forward) |
+| **KEY1** short-press | Previous screen (backward) |
+| **KEY1** long-press (≥ 1.5 s) | Cycle OLED brightness level |
+| **KEY0 + KEY1** held together ≥ 1 s | `watchdog_reboot` — soft-reboot without unplugging USB |

-KEY1 long-press (≥1.5 s) on any screen cycles the OLED brightness level.
+Per-screen state changes (cycling the trigger preset, cycling the lightbar mode, navigating Settings, switching slots, saving colors to favorite slots) all happen on the **DualSense controller buttons** — never on KEY0 / KEY1 — so the two physical buttons always mean the same thing across every screen. See each screen's section above for which controller button does what.

 ### Pinout (standard Waveshare Pico HAT layout)

@@ -365,8 +344,8 @@ KEY1 long-press (≥1.5 s) on any screen cycles the OLED brightness level.

 Two ways to reboot the dongle without unplugging USB — handy if pairing gets stuck or you want a clean state:

- **OLED KEY0 double-click** within ~400 ms → `watchdog_reboot`
- **DualSense `PS + Mute` held for 2 seconds** → `watchdog_reboot` (works whether or not the OLED is attached)
+- **OLED KEY0 + KEY1 held simultaneously for ≥ 1 s** → `watchdog_reboot`. Replaces the older "KEY0 double-click" gesture from earlier versions, since rapid forward-navigation kept tripping the double-click timer by accident.
+- **DualSense `PS + Mute` held for 2 seconds** → `watchdog_reboot` (works whether or not the OLED is attached — headless backup).

 ## Acknowledgements

@@ -0,0 +1,239 @@
+#!/usr/bin/env bash
+# Mic-path host-side diagnostic for the DS5Dongle (OLED Edition).
+#
+# Subcommands:
+#   status   — one-shot snapshot of dongle USB / ALSA / capture stream state.
+#              Prints whether the dongle enumerated, what ALSA card # it
+#              took, the capture stream's current alt setting + sync mode,
+#              and whether a paired DualSense is reachable.
+#   capture  — runs a 3-second arecord on the mic IN endpoint, reports
+#              ALSA result code, captured byte count, and a non-silence
+#              indicator (peak abs sample value via Python's wave module).
+#              Tells us in one shot whether the firmware is producing
+#              actual isoc-IN data and whether anything audio-like is
+#              showing up.
+#   watch    — loops `status` every 2 seconds, prints only on changes —
+#              useful for catching the moment pairing completes or the
+#              arecord stream opens/closes.
+#
+# Why a script: lets the assistant query mic-path state directly from
+# the host rather than waiting for the user to relay OLED counters
+# through chat, which dominated the early Phase-3 debugging time.
+#
+# Requirements (all already installed on the user's machine):
+#   - arecord (alsa-utils)
+#   - lsusb (usbutils)
+#   - python3 (for wave-file stats)
+
+set -u
+
+VID=054c
+PID=0ce6
+DEV_NAME_RE='DualSense Wireless Controller'
+
+find_card() {
+    arecord -l 2>/dev/null | awk -v re="$DEV_NAME_RE" '
+        $0 ~ re {
+            for (i = 1; i <= NF; i++) {
+                if ($i == "card") { gsub(":", "", $(i+1)); print $(i+1); exit }
+            }
+        }'
+}
+
+show_status() {
+    local card
+    card="$(find_card)"
+
+    # USB layer — is the device visible?
+    if lsusb -d "${VID}:${PID}" >/dev/null 2>&1; then
+        printf 'usb: present (%s:%s)\n' "$VID" "$PID"
+    else
+        printf 'usb: NOT FOUND — is the dongle plugged in?\n'
+        return 1
+    fi
+
+    if [[ -z "$card" ]]; then
+        printf 'alsa: dongle is on USB but not exposed as an audio card\n'
+        return 1
+    fi
+    printf 'alsa: card %s\n' "$card"
+
+    # Capture stream details (interface 2 alt 1 mic-IN endpoint)
+    if [[ -r "/proc/asound/card${card}/stream0" ]]; then
+        # Grep just the Capture block so we see status + altset + endpoint
+        awk '/^Capture:/,0' "/proc/asound/card${card}/stream0" | head -10 | sed 's/^/  /'
+    else
+        printf '  (no /proc/asound/card%s/stream0 — older kernel?)\n' "$card"
+    fi
+}
+
+run_capture() {
+    local card secs="${1:-3}"
+    card="$(find_card)"
+    if [[ -z "$card" ]]; then
+        printf 'no dongle capture device found\n'
+        return 1
+    fi
+
+    local tmp
+    tmp="$(mktemp -t mic_diag.XXXXXX.wav)"
+    printf 'capturing %ss from card %s into %s ...\n' "$secs" "$card" "$tmp"
+
+    local err
+    err="$(arecord -q -D "plughw:${card},0" -f S16_LE -c 2 -r 48000 -d "$secs" "$tmp" 2>&1)"
+    local rc=$?
+    if (( rc != 0 )); then
+        printf 'arecord exit=%d: %s\n' "$rc" "$err"
+        rm -f "$tmp"
+        return "$rc"
+    fi
+
+    # Stats via Python — peak abs sample is enough to distinguish "stream
+    # produced silence" from "stream produced actual audio".
+    python3 - "$tmp" <<'PY'
+import sys, wave, struct
+path = sys.argv[1]
+with wave.open(path, 'rb') as w:
+    nframes = w.getnframes()
+    sw = w.getsampwidth()
+    ch = w.getnchannels()
+    fr = w.getframerate()
+    raw = w.readframes(nframes)
+nsamples = nframes * ch
+fmt = '<' + ('h' * nsamples)
+data = struct.unpack(fmt, raw)
+peak = max(abs(s) for s in data) if data else 0
+nonzero = sum(1 for s in data if s != 0)
+rms = (sum(s*s for s in data) / max(len(data), 1)) ** 0.5
+print(f'wav: {nframes} frames, {ch} ch, {sw*8}-bit, {fr} Hz')
+print(f'samples: nonzero={nonzero}/{nsamples}  peak={peak}  rms={rms:.1f}')
+if peak == 0:
+    print('verdict: STREAM IS SILENT — firmware not producing isoc-IN data')
+elif peak < 100:
+    print('verdict: extremely quiet — possibly DC offset only')
+else:
+    print('verdict: AUDIO PRESENT')
+PY
+    rm -f "$tmp"
+}
+
+watch_status() {
+    local prev=""
+    while :; do
+        local now
+        now="$(show_status 2>&1)"
+        if [[ "$now" != "$prev" ]]; then
+            printf '\n=== %s ===\n%s\n' "$(date '+%H:%M:%S')" "$now"
+            prev="$now"
+        fi
+        sleep 2
+    done
+}
+
+bt_trace() {
+    # Query the firmware's 0xFD vendor feature report via /dev/hidraw.
+    # 0xFD carries two sections:
+    #   Section 1 (bytes 0..31)  — mic-investigation: BT 0x31 / non-0x31
+    #     counts, byte[2] OR mask, frame prefixes. Originally used to
+    #     locate the mic stream; kept for any future BT-input triage.
+    #   Section 2 (bytes 32..43) — host -> dongle -> BT trigger flow
+    #     counters (issue #3): host 0x02 OUT received total, of those
+    #     where AllowRight/LeftTriggerFFB was set, and of those forwarded
+    #     as BT 0x31 sub-0x10. Lets the user triage adaptive-trigger
+    #     issues without needing an OLED in the loop.
+    # The ioctl buffer is 45 bytes (44 payload + 1 byte that the kernel
+    # fills with the report ID).
+    python3 - <<'PY'
+import fcntl, glob, struct, sys, time
+
+VID, PID = 0x054c, 0x0ce6
+IOCTL_SIZE = 45  # 1 byte report ID + 44 bytes firmware payload
+
+def find_dongle():
+    for path in sorted(glob.glob('/dev/hidraw*')):
+        try:
+            f = open(path, 'rb+')
+            buf = bytearray(IOCTL_SIZE); buf[0] = 0xFD
+            ioctl_num = (3 << 30) | (IOCTL_SIZE << 16) | (ord('H') << 8) | 0x07
+            try:
+                fcntl.ioctl(f, ioctl_num, buf)
+                return f
+            except OSError:
+                f.close()
+        except (OSError, PermissionError):
+            pass
+    return None
+
+f = find_dongle()
+if f is None:
+    print('no dongle found (or no /dev/hidraw permission)')
+    sys.exit(1)
+
+def query():
+    buf = bytearray(IOCTL_SIZE); buf[0] = 0xFD
+    ioctl_num = (3 << 30) | (IOCTL_SIZE << 16) | (ord('H') << 8) | 0x07
+    fcntl.ioctl(f, ioctl_num, buf)
+    # Kernel prepends the report ID at byte 0; firmware payload starts at byte 1.
+    return bytes(buf[1:])
+
+def decode(b):
+    return {
+        'bt31':       struct.unpack('<I', b[0:4])[0],
+        'btoth':      struct.unpack('<I', b[4:8])[0],
+        'other_id':   b[8],
+        'other_or':   b[9],
+        'b2_or':      b[10],
+        'b2_last':    b[11],
+        'lmin':       struct.unpack('<H', b[12:14])[0],
+        'lmax':       struct.unpack('<H', b[14:16])[0],
+        'othpfx':     b[16:24].hex(),
+        'anypfx':     b[24:32].hex(),
+        'host02':     struct.unpack('<I', b[32:36])[0] if len(b) >= 36 else 0,
+        'host02_trig':struct.unpack('<I', b[36:40])[0] if len(b) >= 40 else 0,
+        'host02_tx':  struct.unpack('<I', b[40:44])[0] if len(b) >= 44 else 0,
+    }
+
+s1 = query(); time.sleep(1.0); s2 = query()
+d1 = decode(s1); d2 = decode(s2)
+
+# Mic-investigation section
+bt31_rate  = d2['bt31']  - d1['bt31']
+btoth_rate = d2['btoth'] - d1['btoth']
+print('-- BT input (mic investigation legacy) --')
+print(f'rates: 0x31={bt31_rate}/s, non-0x31={btoth_rate}/s')
+print(f'len range: {d2["lmin"]}-{d2["lmax"]} bytes')
+print(f'byte[2] OR mask across 0x31 frames: 0x{d2["b2_or"]:02X}  last=0x{d2["b2_last"]:02X}')
+print(f'non-0x31 report IDs: OR mask=0x{d2["other_or"]:02X}  most recent=0x{d2["other_id"]:02X}')
+print(f'last non-0x31 prefix (data[0..7]): {d2["othpfx"]}')
+print(f'last ANY frame (data[0..7]):       {d2["anypfx"]}')
+
+# Trigger-flow section
+o02_rate  = d2['host02']      - d1['host02']
+trig_rate = d2['host02_trig'] - d1['host02_trig']
+tx_rate   = d2['host02_tx']   - d1['host02_tx']
+print()
+print('-- Host -> dongle -> BT trigger flow (issue #3) --')
+print(f'host 0x02 OUT:       total={d2["host02"]}      ({o02_rate}/s)')
+print(f'  w/ AllowTrigFFB:   total={d2["host02_trig"]} ({trig_rate}/s)')
+print(f'  forwarded to BT:   total={d2["host02_tx"]}   ({tx_rate}/s)')
+if d2['host02'] > 0 and d2['host02_trig'] == 0:
+    print('verdict: host is sending 0x02 reports but never sets Allow*TriggerFFB.')
+    print('         The host driver is not requesting adaptive trigger effects.')
+elif d2['host02_trig'] > 0 and d2['host02_tx'] < d2['host02_trig']:
+    print('verdict: trigger Allow bits are set but some reports are not reaching BT.')
+    print('         Likely the speaker-active gate in main.cpp swallowed them.')
+elif d2['host02_trig'] > 0:
+    print('verdict: full chain reached the controller. Tension still missing -> Sony BT limit.')
+PY
+}
+
+case "${1:-status}" in
+    status)   show_status ;;
+    capture)  shift; run_capture "${1:-3}" ;;
+    watch)    watch_status ;;
+    bt-trace) bt_trace ;;
+    *)
+        printf 'usage: %s {status|capture [secs]|watch|bt-trace}\n' "$0" >&2
+        exit 2
+        ;;
+esac
@@ -25,6 +25,14 @@
 // #define VOLUME_GAIN       2
 // #define BUFFER_LENGTH     48

+// DualSense microphone, ported from awalol/DS5Dongle's `mic` branch.
+// The DS5 sends mic audio as Opus packets embedded in BT input report
+// 0x31 when bit 1 of byte 2 is set; payload is 71 bytes of Opus at
+// offset 4, decoded to mono 48 kHz 10 ms frames (480 samples).
+#define MIC_CHANNELS      1
+#define MIC_FRAMES        480
+#define MIC_OPUS_SIZE     71
+
 using std::clamp;
 using std::max;

@@ -37,6 +45,21 @@ queue_t audio_fifo;
 static uint8_t opus_buf[200];
 critical_section_t opus_cs;

+// Mic ingress queue — filled from on_bt_data() (BT poll, core0), drained
+// at the top of audio_loop() on core0. The decoder is single-threaded
+// (core0 only), so no critical section is needed around it.
+queue_t mic_fifo;
+struct mic_element { uint8_t data[MIC_OPUS_SIZE]; };
+static OpusDecoder *mic_decoder = nullptr;
+static volatile uint32_t g_mic_frames = 0;
+static volatile int32_t  g_mic_last_decoded = 0;  // opus_decode return value
+static volatile uint16_t g_mic_last_want = 0;     // bytes we asked TinyUSB to send
+static volatile uint16_t g_mic_last_wrote = 0;    // bytes TinyUSB accepted
+uint32_t audio_mic_frames() { return g_mic_frames; }
+int32_t  audio_mic_last_decoded() { return g_mic_last_decoded; }
+uint16_t audio_mic_last_want()    { return g_mic_last_want; }
+uint16_t audio_mic_last_wrote()   { return g_mic_last_wrote; }
+
 struct audio_raw_element {
    float data[512 * 2];
 };
@@ -73,7 +96,51 @@ uint8_t audio_peak_haptic() {
    return (uint8_t)(v >> 7);
 }

+// Most-recent Opus TOC byte (first byte of the packet). Used by the OLED
+// Diagnostics screen to decode the frame's bandwidth + duration config
+// without serial.
+static volatile uint8_t g_mic_toc = 0;
+uint8_t audio_mic_last_toc() { return g_mic_toc; }
+
+// Push a 71-byte Opus mic packet from the BT handler into the mic_fifo.
+// Called from src/main.cpp's on_bt_data() when the DS5 sends a mic-tagged
+// 0x31 input report. Drops the oldest queued packet if the FIFO is full —
+// preferring fresh audio over backlog on overload.
+void mic_add_queue(const uint8_t *data) {
+    static mic_element packet{};
+    memcpy(packet.data, data, MIC_OPUS_SIZE);
+    g_mic_toc = data[0]; // first byte of the Opus packet
+    if (queue_is_full(&mic_fifo)) queue_try_remove(&mic_fifo, NULL);
+    queue_try_add(&mic_fifo, &packet);
+}
+
 void audio_loop() {
+    // Mic-in path: pull one Opus packet from the BT-side FIFO, decode to
+    // mono PCM, duplicate to stereo (our UAC1 endpoint declares 2 channels),
+    // push to the host via tud_audio_write. Runs once per loop iteration so
+    // it keeps up with the ~100 Hz arrival rate of mic-tagged BT frames.
+    if (mic_decoder != nullptr) {
+        static mic_element packet{};
+        if (queue_try_remove(&mic_fifo, &packet)) {
+            static int16_t mono[MIC_FRAMES];
+            const int decoded = opus_decode(mic_decoder, packet.data,
+                                            MIC_OPUS_SIZE, mono, MIC_FRAMES, 0);
+            g_mic_last_decoded = decoded; // observed in OLED Diag
+            if (decoded > 0) {
+                static int16_t stereo[MIC_FRAMES * 2];
+                for (int i = 0; i < decoded; i++) {
+                    stereo[i * 2]     = mono[i];
+                    stereo[i * 2 + 1] = mono[i];
+                }
+                const uint16_t want = (uint16_t)(decoded * 2 * sizeof(int16_t));
+                const uint16_t wrote = tud_audio_write(stereo, want);
+                g_mic_last_want  = want;
+                g_mic_last_wrote = wrote;
+                g_mic_frames++;
+            }
+        }
+    }
+
    // 1. 读取 USB 音频数据
    if (!tud_audio_available()) return;

@@ -253,6 +320,16 @@ void audio_init() {
    critical_section_init(&opus_cs);
    multicore_launch_core1_with_stack(core1_entry, audio_core1_stack, sizeof(audio_core1_stack));
 #endif
+
+    // Mic path: queue + decoder live on core0 (audio_loop), separate from
+    // the core1 speaker encoder. Mic Opus is mono / 48 kHz / 10 ms frames.
+    queue_init(&mic_fifo, sizeof(mic_element), 2);
+    int dec_error = 0;
+    mic_decoder = opus_decoder_create(48000, MIC_CHANNELS, &dec_error);
+    if (dec_error != 0 || mic_decoder == nullptr) {
+        printf("[Audio] OpusDecoder create failed (err=%d)\n", dec_error);
+        mic_decoder = nullptr;  // ensure audio_loop's null-guard short-circuits
+    }
 }

 static OpusEncoder *encoder;
@@ -21,5 +21,15 @@ uint8_t  audio_peak_haptic();    // 0..255, decays on read
 // Byte-flow counters for the Diagnostics screen + web emulator.
 uint32_t audio_usb_frames();
 uint32_t audio_bt_packets();
+uint32_t audio_mic_frames();   // count of mic Opus frames decoded + written
+int32_t  audio_mic_last_decoded(); // last opus_decode return — neg = error, 480 = OK
+uint16_t audio_mic_last_want();    // bytes asked of tud_audio_write
+uint16_t audio_mic_last_wrote();   // bytes TinyUSB FIFO actually accepted
+uint8_t  audio_mic_last_toc();     // first byte of last Opus packet (frame config)
+
+// Called from on_bt_data() in main.cpp when the DS5 sends a mic-tagged
+// 0x31 input report. Buffer must point at MIC_OPUS_SIZE (71) bytes of
+// Opus payload.
+void mic_add_queue(const uint8_t *data);

 #endif //DS5_BRIDGE_AUDIO_H
@@ -48,6 +48,25 @@ uint16_t cpu_temp_raw_smoothed() {
    return (uint16_t)(ema + 0.5f);
 }

+// Mic-debug globals (defined in main.cpp). File-scope extern so the
+// linker resolves them once and cmd.cpp's 0xFD handler reads the same
+// memory main.cpp writes to.
+extern volatile uint32_t g_bt_31_packets;
+extern volatile uint32_t g_bt_other_packets;
+extern volatile uint8_t  g_last_other_id;
+extern volatile uint8_t  g_other_id_or;
+extern volatile uint8_t  g_31_b2_or;
+extern volatile uint8_t  g_last_31_b2;
+extern volatile uint16_t g_31_len_min;
+extern volatile uint16_t g_31_len_max;
+extern volatile uint8_t  g_last_other_prefix[8];
+extern volatile uint8_t  g_last_any_prefix[16];
+extern volatile uint16_t g_longest_len;
+extern volatile uint8_t  g_longest_frame[80];
+extern volatile uint32_t g_host_out02_total;
+extern volatile uint32_t g_host_out02_trig_allow;
+extern volatile uint32_t g_host_out02_to_bt;
+
 bool is_pico_cmd(uint8_t report_id) {
    if (report_id == 0xf6 ||
        report_id == 0xf7 ||
@@ -55,7 +74,9 @@ bool is_pico_cmd(uint8_t report_id) {
        report_id == 0xf9 ||
        report_id == 0xfa ||
        report_id == 0xfb ||
-        report_id == 0xfc
+        report_id == 0xfc ||
+        report_id == 0xfd ||  // mic-debug counters
+        report_id == 0xfe     // mic-debug longest-frame dump
    ) {
        return true;
    }
@@ -161,6 +182,66 @@ uint16_t pico_cmd_get(uint8_t report_id, uint8_t *buffer, uint16_t reqlen) {
        memcpy(buffer + 9, &temp_raw,        2);
        return want;
    }
+    if (report_id == 0xfd) {
+        // Bridge-diagnostics feature report. 44-byte payload.
+        // Section 1: mic-investigation counters (original 0..31).
+        //   [0..3]   uint32  BT 0x31 input report count
+        //   [4..7]   uint32  BT non-0x31 input report count
+        //   [8]      uint8   last non-0x31 report ID seen
+        //   [9]      uint8   OR mask of all non-0x31 report IDs seen
+        //   [10]     uint8   OR mask of byte[2] across all 0x31 frames
+        //   [11]     uint8   last value of byte[2] in a 0x31 frame
+        //   [12..13] uint16  min frame length seen
+        //   [14..15] uint16  max frame length seen
+        //   [16..23] uint8[8]  first 8 bytes of last non-0x31 frame
+        //   [24..31] uint8[8]  first 8 bytes of most recent ANY frame
+        // Section 2: trigger-flow counters (issue #3 triage).
+        //   [32..35] uint32  host 0x02 OUT reports received total
+        //   [36..39] uint32  ...of those, with Allow*TriggerFFB set
+        //   [40..43] uint32  ...forwarded as BT 0x31 sub-0x10
+        constexpr uint16_t want = 44;
+        for (uint16_t i = 0; i < want && i < reqlen; i++) buffer[i] = 0;
+
+        const uint32_t bt31    = g_bt_31_packets;
+        const uint32_t btother = g_bt_other_packets;
+        const uint16_t lmin    = g_31_len_min == 0xFFFF ? 0 : g_31_len_min;
+        const uint16_t lmax    = g_31_len_max;
+
+        memcpy(buffer + 0,  &bt31, 4);
+        memcpy(buffer + 4,  &btother, 4);
+        buffer[8]  = g_last_other_id;
+        buffer[9]  = g_other_id_or;
+        buffer[10] = g_31_b2_or;
+        buffer[11] = g_last_31_b2;
+        memcpy(buffer + 12, &lmin, 2);
+        memcpy(buffer + 14, &lmax, 2);
+        for (int i = 0; i < 8 && (16 + i) < reqlen; i++) buffer[16 + i] = g_last_other_prefix[i];
+        for (int i = 0; i < 8 && (24 + i) < reqlen; i++) buffer[24 + i] = g_last_any_prefix[i];
+
+        const uint32_t out02   = g_host_out02_total;
+        const uint32_t out02_t = g_host_out02_trig_allow;
+        const uint32_t out02_b = g_host_out02_to_bt;
+        if ((32 + 4) <= reqlen) memcpy(buffer + 32, &out02,   4);
+        if ((36 + 4) <= reqlen) memcpy(buffer + 36, &out02_t, 4);
+        if ((40 + 4) <= reqlen) memcpy(buffer + 40, &out02_b, 4);
+        return (reqlen < want) ? reqlen : want;
+    }
+    if (report_id == 0xfe) {
+        // 0xFE: full content of the LONGEST 0x31 frame seen. Bytes 0-1
+        // = length (uint16 LE), bytes 2+ = the captured frame bytes.
+        constexpr uint16_t want = 82;  // 2 length + 80 frame bytes
+        const uint16_t lim = (reqlen < want) ? reqlen : want;
+        for (uint16_t i = 0; i < lim; i++) buffer[i] = 0;
+        const uint16_t llen = g_longest_len;
+        if (lim >= 2) {
+            buffer[0] = (uint8_t)(llen & 0xFF);
+            buffer[1] = (uint8_t)((llen >> 8) & 0xFF);
+        }
+        for (uint16_t i = 0; i < 80 && (i + 2) < lim; i++) {
+            buffer[2 + i] = g_longest_frame[i];
+        }
+        return lim;
+    }
    return 0;
 }

@@ -95,6 +95,20 @@ void config_valid() {
        body->auto_haptics_lowpass = 1; // 160 Hz
        printf("[Config] auto_haptics_lowpass invalid, defaulting to 1 (160 Hz)\n");
    }
+    if (body->lightbar_mode > 8) { // 0..7 OLED modes + 8 = HOST passthrough (default)
+        body->lightbar_mode = 8;
+        printf("[Config] lightbar_mode invalid, defaulting to 8 (HOST passthrough)\n");
+    }
+    // lb_fav_{r,g,b} need no validation — any 0..255 is a legal color, and an
+    // erased flash sector (0xFF) yields 4 white favorites, a usable default.
+    if (body->screen_dim_timeout > 250) { // 0xFF erased / out of range → default
+        body->screen_dim_timeout = 2;     // mirrors the original 2-min dim tier
+        printf("[Config] screen_dim_timeout invalid, defaulting to 2 min\n");
+    }
+    if (body->screen_off_timeout > 250) {
+        body->screen_off_timeout = 15;    // mirrors the original 15-min off tier
+        printf("[Config] screen_off_timeout invalid, defaulting to 15 min\n");
+    }
    if (body->config_version != CONFIG_VERSION) {
        body->config_version = CONFIG_VERSION;
        printf("[Config] Warning: Config may breaking change\n");
@@ -23,6 +23,22 @@ struct __attribute__((packed)) Config_body {
    uint8_t auto_haptics_enable;  // 0=Off, 1=Fallback (default), 2=Mix, 3=Replace
    uint8_t auto_haptics_gain;    // [0,200] percent, default 100
    uint8_t auto_haptics_lowpass; // 0=80Hz, 1=160Hz (default), 2=250Hz, 3=400Hz
+    // Lightbar (OLED Edition Phase H): persisted so the chosen mode/colors
+    // survive reboot and stick across all screens. lightbar_mode indexes the
+    // OLED Lightbar screen's mode list — 0=LIVE, 1..4=FAV0..3, 5=BREATHING,
+    // 6=RAINBOW, 7=FADE, 8=HOST (passthrough, the safe default that lets the
+    // host/game own the LED). Keep this numbering in sync with kNumLbModes /
+    // kLbModeHost in src/oled.cpp. Erased flash (0xFF) → HOST + white favorites.
+    uint8_t lightbar_mode;
+    uint8_t lb_fav_r[4];
+    uint8_t lb_fav_g[4];
+    uint8_t lb_fav_b[4];
+    // OLED idle power-ladder thresholds, in minutes. 0 = that tier disabled.
+    // Defaults preserve the original hardcoded ladder (2 min dim, 15 min off).
+    // Range [0,250] (0xFF erased flash → default via config_valid clamp). The
+    // idle timer is 64-bit µs so the full range is representable. Issue #5.
+    uint8_t screen_dim_timeout;
+    uint8_t screen_off_timeout;
 };

 struct __attribute__((packed)) Config {
@@ -30,6 +30,58 @@ int reportSeqCounter = 0;
 uint8_t packetCounter = 0;
 bool spk_active = false;

+// Mic-debug instrumentation: count every 0x31 BT input report regardless
+// of mic-tag bit, accumulate OR-mask of every byte-2 value seen (tells us
+// which bits ever fire) and remember the last byte-2 value. Also track
+// observed frame-length range. Surfaced on the OLED Diagnostics screen.
+volatile uint32_t g_bt_31_packets = 0;
+volatile uint32_t g_bt_other_packets = 0;
+volatile uint8_t  g_last_other_id = 0;
+volatile uint8_t  g_other_id_or = 0;
+volatile uint8_t  g_last_31_b2 = 0;
+volatile uint8_t  g_31_b2_or = 0;
+volatile uint16_t g_31_len_min = 0xFFFF;
+volatile uint16_t g_31_len_max = 0;
+volatile uint8_t  g_mic_prefix[6] = {0};
+volatile uint8_t  g_last_other_prefix[8] = {0};
+volatile uint8_t  g_last_any_prefix[16] = {0};
+volatile uint16_t g_longest_len = 0;
+volatile uint8_t  g_longest_frame[80] = {0};
+uint32_t bt_31_packet_count() { return g_bt_31_packets; }
+uint8_t  bt_31_last_byte2()  { return g_last_31_b2; }
+uint8_t  bt_31_b2_or_mask()  { return g_31_b2_or; }
+uint16_t bt_31_len_min()     { return g_31_len_min == 0xFFFF ? 0 : g_31_len_min; }
+uint16_t bt_31_len_max()     { return g_31_len_max; }
+void bt_31_mic_prefix(uint8_t out[6]) {
+    for (int i = 0; i < 6; i++) out[i] = g_mic_prefix[i];
+}
+
+// Trigger-flow diagnostics. Counts host → dongle → BT path for adaptive
+// trigger effects. Lets us tell which link in the chain breaks when games
+// like Death Stranding 2 don't produce trigger tension via the dongle:
+//   out02_total     - every 0x02 HID OUT report received from host
+//   out02_trig_allow - of those, how many set AllowRight/LeftTriggerFFB
+//                     (valid_flag0 bits 2 & 3) — i.e. the host actually
+//                     told us "apply trigger FFB"
+//   out02_to_bt     - 0x02 reports that we forwarded to the controller as
+//                     a BT 0x31 sub-0x10 packet (gated off when speaker is
+//                     active; audio.cpp's 0x36 path carries state then)
+//   out02_trig_folded - of the trig_allow reports, how many arrived while the
+//                     speaker stream was active and were therefore NOT sent as
+//                     a standalone 0x31 — their trigger FFB was folded into the
+//                     0x36 audio frames via state[]. So trig_allow == to_bt's
+//                     trigger share + this, proving the "missing" forwards
+//                     (issue #6) aren't drops. Surfaced on the Diag screen.
+// Surfaced on the OLED Diagnostics screen.
+volatile uint32_t g_host_out02_total = 0;
+volatile uint32_t g_host_out02_trig_allow = 0;
+volatile uint32_t g_host_out02_to_bt = 0;
+volatile uint32_t g_host_out02_trig_folded = 0;
+uint32_t host_out02_total()       { return g_host_out02_total; }
+uint32_t host_out02_trig_allow()  { return g_host_out02_trig_allow; }
+uint32_t host_out02_to_bt()       { return g_host_out02_to_bt; }
+uint32_t host_out02_trig_folded() { return g_host_out02_trig_folded; }
+
 uint8_t interrupt_in_data[63] = {
    0x7f, 0x7d, 0x7f, 0x7e, 0x00, 0x00, 0xa7,
    0x08, 0x00, 0x00, 0x00, 0x52, 0x43, 0x30, 0x41,
@@ -101,6 +153,48 @@ void interrupt_loop() {

 void on_bt_data(CHANNEL_TYPE channel, uint8_t *data, uint16_t len) {
    // printf("[Main] BT data callback: channel=%u len=%u\n", channel, len);
+    // Track ALL INTERRUPT input reports, not just 0x31. The mic stream
+    // may live on a different report ID — confirmed 2026-05-19 that data[2]
+    // bit 0 (and bit 1) is NOT a mic flag, just the report-type indicator;
+    // every "mic-tagged" frame turned out to be standard input.
+    if (channel == INTERRUPT && len > 1) {
+        if (data[1] == 0x31) g_bt_31_packets++;
+        else {
+            g_bt_other_packets++;
+            g_last_other_id = data[1];
+            g_other_id_or = (uint8_t)(g_other_id_or | data[1]);
+            for (uint16_t i = 0; i < 8 && i < len; i++) {
+                g_last_other_prefix[i] = data[i];
+            }
+        }
+        if (len > 2) {
+            g_last_31_b2 = data[2];
+            g_31_b2_or = (uint8_t)(g_31_b2_or | data[2]);
+        }
+        if (len < g_31_len_min) g_31_len_min = len;
+        if (len > g_31_len_max) g_31_len_max = len;
+        for (uint16_t i = 0; i < 16 && i < len; i++) {
+            g_last_any_prefix[i] = data[i];
+        }
+
+        // Capture the entire content of the longest 0x31 frame we've
+        // seen. Long frames almost certainly carry the mic audio appended
+        // after the standard 63-byte input report — this lets us look
+        // at the trailing bytes directly via 0xFD diagnostic.
+        if (data[1] == 0x31 && len > g_longest_len) {
+            g_longest_len = len;
+            for (uint16_t i = 0; i < 80 && i < len; i++) {
+                g_longest_frame[i] = data[i];
+            }
+        }
+    }
+
+    // Mic-add tap DISABLED — was decoding standard input (button/stick
+    // bytes) as Opus and producing INT16_MIN garbage on the USB IN
+    // endpoint. Re-enable once we identify the actual mic transport.
+    // (Standard input handling below resumes — Status screen + HID
+    //  reports to host need this.)
+
    if (channel == INTERRUPT && data[1] == 0x31) {
        if ((data[56] & 1) != (interrupt_in_data[53] & 1)) {
            set_headset(data[56] & 1);
@@ -114,12 +208,6 @@ void on_bt_data(CHANNEL_TYPE channel, uint8_t *data, uint16_t len) {
            return;
        }

-        // We add the critical section here to avoid any race conditions when writing to the interrupt_in_data buffer,
-        // which is shared between the main loop and this callback. 
-        // The critical section ensures that only one thread can access the buffer at a time, 
-        // preventing data corruption and ensuring thread safety.   
-        // We also set the report_dirty flag to true to indicate that new data is available
-        //  and needs to be sent in the next interrupt report.
        critical_section_enter_blocking(&report_cs);
        memcpy(interrupt_in_data, data + 3, 63);
        report_dirty = true;
@@ -186,8 +274,19 @@ void tud_hid_set_report_cb(uint8_t itf, uint8_t report_id, hid_report_type_t rep
    if (report_id == 0) {
        switch (buffer[0]) {
            case 0x02: {
+                g_host_out02_total++;
+                // valid_flag0 lives at buffer[1] (right after the 0x02 report id).
+                // Bits 2 & 3 are AllowRight/LeftTriggerFFB.
+                if (bufsize > 1 && (buffer[1] & 0x0C)) {
+                    g_host_out02_trig_allow++;
+                }
                state_update(buffer + 1, bufsize - 1);
                if (spk_active) {
+                    // Not forwarded as a standalone 0x31 — the trigger FFB just
+                    // written into state[] rides the 0x36 audio frames instead.
+                    // Count the trigger-bearing ones so the Diag screen shows
+                    // trig_allow == to_bt(trig) + folded (issue #6: not drops).
+                    if (bufsize > 1 && (buffer[1] & 0x0C)) g_host_out02_trig_folded++;
                    break;
                }
                uint8_t outputData[78]{};
@@ -200,6 +299,7 @@ void tud_hid_set_report_cb(uint8_t itf, uint8_t report_id, hid_report_type_t rep
                // memcpy(outputData + 3, buffer + 1, bufsize - 1);
                state_set(outputData + 3,sizeof(SetStateData));
                bt_write(outputData, sizeof(outputData));
+                g_host_out02_to_bt++;
                break;
            }
        }
@@ -6,6 +6,12 @@
 #include <cstring>

 #include "utils.h"
+#include "state_mgr.h"
+
+// Set by the OLED lightbar service (src/oled.cpp). While true, the firmware
+// owns the lightbar (an OLED mode or the charging pulse) and the host's
+// AllowLedColor writes are suppressed below so they can't stomp it.
+extern bool g_lightbar_override;

 namespace {
    constexpr size_t kAudioControlOffset = offsetof(SetStateData, MuteLightMode) - sizeof(uint8_t);
@@ -19,7 +25,7 @@ namespace {
 static constexpr uint8_t state_init_data[63] = {
    0xfd, 0xf7, 0x0, 0x0,
    0x7f, 0x64, // Headphones, Speaker
-    0xff, 0x9, 0x0, 0x0F, 0x0, 0x0, 0x0, 0x0,
+    0x40, 0x9, 0x0, 0x00, 0x0, 0x0, 0x0, 0x0, // VolumeMic=64, MuteControl all clear (no PowerSave)
    0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
    0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
    0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xa,
@@ -41,6 +47,18 @@ void state_set(uint8_t *data, const uint8_t size) {
    memcpy(data, state, size);
 }

+void state_set_led(uint8_t r, uint8_t g, uint8_t b) {
+    state[offsetof(SetStateData, LedRed) + 0] = r;
+    state[offsetof(SetStateData, LedRed) + 1] = g;
+    state[offsetof(SetStateData, LedRed) + 2] = b;
+}
+
+void state_get_led(uint8_t *r, uint8_t *g, uint8_t *b) {
+    *r = state[offsetof(SetStateData, LedRed) + 0];
+    *g = state[offsetof(SetStateData, LedRed) + 1];
+    *b = state[offsetof(SetStateData, LedRed) + 2];
+}
+
 void state_update(const uint8_t *data, const uint8_t size) {
    if (size < sizeof(SetStateData)) {
        printf(
@@ -147,7 +165,7 @@ void state_update(const uint8_t *data, const uint8_t size) {
        sizeof(uint8_t)
    );
    copy_if_allowed(
-        update.AllowLedColor,
+        update.AllowLedColor && !g_lightbar_override,
        offsetof(SetStateData, LedRed),
        sizeof(update.LedRed) * 3
    );
@@ -5,8 +5,17 @@
 #ifndef DS5_BRIDGE_STATE_MGR_H
 #define DS5_BRIDGE_STATE_MGR_H

+#include <cstdint>
+
 void state_init();
 void state_set(uint8_t *data, const uint8_t size);
 void state_update(const uint8_t *data, const uint8_t size);

+// Lightbar RGB lives in the persistent state[] block (SetStateData LedRed/
+// Green/Blue) that gets stamped into every outbound BT packet. The OLED
+// lightbar service writes it directly so a firmware-chosen color rides every
+// host/audio frame instead of only the transient send_lightbar_color() packet.
+void state_set_led(uint8_t r, uint8_t g, uint8_t b);
+void state_get_led(uint8_t *r, uint8_t *g, uint8_t *b);
+
 #endif //DS5_BRIDGE_STATE_MGR_H