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feat: DualSense BT microphone + USB 3.0 connection watchdog

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BT microphone over Bluetooth: the DS5 mic now works over the dongle's BT
pairing — decoded from the controller's Opus stream to the USB capture
endpoint. Hinges on pkt[4] bit 0 (mic-enable) in the outbound 0x36 audio
report; credit to awalol (upstream) for identifying it. Mic-tagged 0x31
frames ((data[2]>>1)&1) are ALWAYS diverted out of the input path (decoded
when on, dropped when off) so Opus payload can never corrupt sticks/buttons.
Always-on via a sticky-latch keep-alive that only runs post-enumeration
(tud_mounted) so it never floods the fresh-pair handshake (which otherwise
delayed controller detection past the watchdog and tore the link down).
Toggle: bt_mic_enable config field (default on) — OLED Settings + web config.
README gains a "DualSense Microphone over Bluetooth" section;
BLUETOOTH_AUDIO_NOTES.md rewritten from "dead end" to the working mechanism.

USB 3.0 connection watchdog: auto-recovers a stalled connection (re-inquiry)
instead of hanging on the amber lightbar, for USB 3.0 ~2.4 GHz RF interference
that desensitizes the CYW43 BT radio. Re-enabled the ACL-fail / auth-fail /
create-connection-reject recovery paths. README "USB 3.0 ports & Bluetooth
interference" section with mitigations.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
MarcelineVPQ
2026-05-24 01:30:37 -06:00
co-authored by Claude Opus 4.7
parent 89847ed06e
commit 20b41d80a1
9 changed files with 211 additions and 80 deletions
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src/oled.cpp
+8 -5
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@@ -126,14 +126,15 @@ constexpr int kLbModeHost = 8;
constexpr int kNumLbModes = 9;
// Settings screen state
constexpr int kNumSettingsItems = 15; // 8 fields + 3 auto-haptic + 2 screen-timeout + Reset + Wipe
constexpr int kNumSettingsItems = 16; // 8 fields + 3 auto-haptic + 2 screen-timeout + BT mic + Reset + Wipe
constexpr int kSettingsAutoHapEnaIdx = 8;
constexpr int kSettingsAutoHapGainIdx = 9;
constexpr int kSettingsAutoHapLpIdx = 10;
constexpr int kSettingsScrDimIdx = 11;
constexpr int kSettingsScrOffIdx = 12;
constexpr int kSettingsResetIdx = 13;
constexpr int kSettingsWipeSlotsIdx = 14;
constexpr int kSettingsBtMicIdx = 13;
constexpr int kSettingsResetIdx = 14;
constexpr int kSettingsWipeSlotsIdx = 15;
Config_body settings_local{};
int settings_sel = 0;
bool settings_dirty = false;
@@ -1416,6 +1417,7 @@ void settings_adjust(int delta) {
c.screen_off_timeout = (uint8_t)v;
break;
}
case 13: c.bt_mic_enable ^= 1; break; // BT mic on/off
}
}
@@ -1517,8 +1519,9 @@ __attribute__((noinline)) void format_settings_item(int idx, char* line, size_t
if (c.screen_off_timeout == 0) snprintf(line, n, "%s ScrOff off", cur);
else snprintf(line, n, "%s ScrOff %umin", cur, c.screen_off_timeout);
break;
case 13: snprintf(line, n, "%s Reset to defaults", cur); break;
case 14: snprintf(line, n, "%s Wipe all slots", cur); break;
case 13: snprintf(line, n, "%s BT Mic %s", cur, c.bt_mic_enable ? "on" : "off"); break;
case 14: snprintf(line, n, "%s Reset to defaults", cur); break;
case 15: snprintf(line, n, "%s Wipe all slots", cur); break;
}
}