From 5c7c0677cb2e068b268f4987bb7b53b5c34fa9dc Mon Sep 17 00:00:00 2001 From: mikkeli Date: Fri, 9 Oct 2026 00:43:52 +0900 Subject: [PATCH] Link-drop section: attach the ignition remark to the PD reset Co-Authored-By: Claude Opus 5.5 --- docs/ARCHITECTURE.md | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md index 0b1df77..6135e8e 100644 --- a/docs/ARCHITECTURE.md +++ b/docs/ARCHITECTURE.md @@ -149,9 +149,9 @@ 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. Longer outages measured early on were the tablet sleeping on -battery, not the link. In the car this happens at every ignition -change. Design for it as normal operation. Requirements, not yet implemented: +intervention. 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: - **Failure detection on the Orin.** An app-level heartbeat with a timeout of a few seconds, not TCP alone. A connection on a link that went down can stay