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QSPI-bringup stability enhancements

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liquidraver
2026-09-27 13:59:33 +02:00
parent 1f1e53d1df
commit 514aa77fe8
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docs/DESIGN.md
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@@ -312,6 +312,9 @@ it polls external state. Repeater and room server share one loop (`server_main_c
### 8.5 Persistence
- LittleFS `/lfs` (internal) and optional `/ext` (QSPI). BLE bonds in NVS, isolated from LittleFS on nRF52/ESP32.
- `/ext` is never probed at boot: its flash is deferred-init and `zephcore_fs_mount_ext()` brings it up on first
use, since a boot-time probe can beat a switched rail that is still cold (first boot after a UF2 update). If it
still fails, the companion falls back to `/lfs` and the next boot that mounts `/ext` keeps the `/ext` copy.
- Prefs are upstream's `prefs.json` (ZephCore fields under `zc`); the legacy binary layouts are migrated once and
kept for downgrades.
- Atomic replace for identity, prefs and channels; contacts on `/ext` only.