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feat: Add AAP session tests for AirPods Pro 2 USB-C

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Add AirPodsPro2UsbcAapSessionTest with real captured bytes from a live

device session (model A3048, Pixel 8, 2026-04-02). Covers handshake,

device info, battery states, private keys, all Pro 2 USB-C settings

(including ADAPTIVE ANC, VolumeSwipe, ConversationalAwareness),

ear detection across 6 transitions, and unhandled messages.

Also document ChargingState observations across models and

EndCallMuteMic subtype variations in code comments.
This commit is contained in:
darken
2026-04-02 13:45:52 +02:00
committed by Matthias Urhahn
parent 7b403defab
commit 19d61ca5cb
3 changed files with 258 additions and 3 deletions
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app/src/main/java/eu/darken/capod/pods/core/apple/aap/AapPodState.kt
+4 -2
View File
@@ -75,12 +75,14 @@ data class AapPodState(
}
enum class ChargingState(val wireValue: Int) {
// Pro 1 sends 0x00 transiently when a pod is first removed from the case (reverts to NOT_CHARGING within seconds).
// Pro 2 USB-C skips this and reports NOT_CHARGING immediately. Likely a firmware timing difference.
UNDEFINED(0x00),
CHARGING(0x01),
NOT_CHARGING(0x02),
DISCONNECTED(0x04),
// TODO: Observed on AirPods Pro 3 in charging case. Possibly Apple's "Optimized Battery Charging" limit.
// Verify behavior with Pro 2 and Pro 1 to confirm whether this is model-specific or firmware-specific.
// Observed on Pro 3 and Pro 2 USB-C in charging case. Apple's "Optimized Battery Charging" feature.
// Not observed on Pro 1 (firmware 51.9.6) — may require newer firmware or hardware.
CHARGING_OPTIMIZED(0x05),
;
app/src/main/java/eu/darken/capod/pods/core/apple/aap/protocol/DefaultAapDeviceProfile.kt
+3 -1
View File
@@ -324,7 +324,9 @@ class DefaultAapDeviceProfile(
AapSetting.EndCallMuteMic::class to AapSetting.EndCallMuteMic(muteMic, endCall)
}
0x00, 0x20 -> {
// Alternate/compact response format: byte 2 is a combined mode value
// Compact response format: byte 2 is a combined mode value.
// 0x00: observed on Pro 1 (fw 51.9.6, 2026-04-02) and Pro 2 USB-C (fw 81.x, 2026-04-02) and Pro 3.
// 0x20: observed on Pro 1 (fw 51.9.6, 2026-03-31). Same device can send either subtype across sessions.
val combined = payload[2].toInt() and 0xFF
val (muteMic, endCall) = when (combined) {
0x02 -> AapSetting.EndCallMuteMic.MuteMicMode.SINGLE_PRESS to AapSetting.EndCallMuteMic.EndCallMode.DOUBLE_PRESS