From feb9564ce401db6bf2608d6f7f844a2156446fc9 Mon Sep 17 00:00:00 2001 From: mikkeli Date: Fri, 9 Oct 2026 00:46:34 +0900 Subject: [PATCH] Link drops: restoring PD costs ~2.2 s with the tablet awake Co-Authored-By: Claude Opus 5.5 --- docs/ARCHITECTURE.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md index 6135e8e..60c10a1 100644 --- a/docs/ARCHITECTURE.md +++ b/docs/ARCHITECTURE.md @@ -149,7 +149,7 @@ re-dialling is the client's job. Noticing the loss and redelivering is the Orin' Measured on the USB path (tablet ↔ PD hub ↔ Orin, 2026-10-09): cutting PD power resets the hub's data port, and the link is back within ~3.5 s with no -intervention. In the car that happens at every ignition change, cranking +intervention; restoring it costs ~2.2 s (a gadget reconnect, no detach). In the car that happens at every ignition change, cranking included. Longer outages measured early on were the tablet sleeping on battery, not the link. Design for drops as normal operation. Requirements, not yet implemented: @@ -161,7 +161,7 @@ not the link. Design for drops as normal operation. Requirements, not yet implem nothing. - **The app keeps the tablet awake while it is the display.** Off charger, Android suspends about a minute after screen-off. Then the link is gone in every way that - matters. Kept awake, a PD change costs only ~3.5 s (measured). + matters. Kept awake, a PD change costs only 2–3.5 s (measured). - **Downstream (latest-wins):** unchanged. On reconnect, push current state; no resend, since stale samples are worthless. - **Reliable channel (TTS chunks, acknowledgements):** pending items survive a