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Link-drop section: attach the ignition remark to the PD reset

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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mikkeli
2026-10-09 00:43:52 +09:00
parent 3422b084ac
commit 5c7c0677cb
1 changed files with 3 additions and 3 deletions
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docs/ARCHITECTURE.md
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@@ -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