diff --git a/README.md b/README.md
index 4deddfd..33dcffa 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ This project enables the Raspberry Pi Pico2W to function as a Bluetooth bridge f
- **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
+- **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
@@ -191,53 +191,25 @@ If you plug a [Waveshare Pico-OLED-1.3](#hardware) onto the Pico2W's headers, th
### 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 │ ·• ││
-│ │ │ ▌ ✕ ▌ │ ││
-│ └────┘ └────┘│
-└──────────────────────────────┘
-```
-
-
+
#### 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 │
-└──────────────────────────────┘
-```
+
- **D-pad ▲▼** — move cursor across slots 0–3
- **△** — switch to the cursor slot (disconnect current, reconnect to slot's stored controller)
@@ -248,42 +220,17 @@ 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 │
-└──────────────────────────────┘
-```
-
-
+
- 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 │
-└──────────────────────────────┘
-```
-
-
+
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.
@@ -291,69 +238,45 @@ 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 │
-│ ┌────────┐ │
-│ │ │ │ │
-│ │───•────│ │
-│ │ │ │ │
-│ └────────┘ │
-└──────────────────────────────┘
-```
-
-
+
#### 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 │
-└──────────────────────────────┘
-```
-
-
+
#### 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).
+Uptime, BT state, USB-audio frames/sec, BT 0x32 packets/sec, and HCI error counter — live values for verifying the audio path 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 │
-└──────────────────────────────┘
-```
+
-
+#### 8. CPU / Clock
-#### 8. RSSI
+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).
-Live Bluetooth signal strength of the active link, in dBm with a bar. Closer to 0 dBm is stronger; −90 dBm is weak.
+
-#### 9. VU Meters
+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).
+
+
+
+#### 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
+
-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:
+
+
- **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 %.
@@ -361,15 +284,18 @@ 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)
@@ -387,8 +313,8 @@ 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
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