mothercup/caiic_ble_dual_ota_app2.json at efc7bd129f0a66827fd4d8e6de9a4aebdeaf5e73 - mothercup - Gitea: Git with a cup of tea

evanliu/mothercup

evan.liu efc7bd129f V1.00.21: UART OTA channel verified + mode-switch handshake + loss-tolerant lockstep

- UART binary mode switch mechanism: enter handshake marker '[ota] binary
  mode ON', explicit exit via OTA_ABORT (immediate), 10s idle fallback
  (was 3s, must exceed the host retry window); host resync by CR probe
- fix: otaIdleMs not re-armed on mode entry - every second 'ota' entry was
  kicked out by an instant idle timeout (leftover count from prior session)
- lossy-link tolerance: device drops partial frames after a 100ms byte gap
  so host resends re-align; OTA session is now single-owner (second BEGIN
  on another channel gets BAD_STATE)
- ble_ota_update.py: wait for the enter marker instead of blind sleeps,
  per-frame resend (2s x3), BAD_STATE+expected-offset treated as implicit
  ack for duplicate DATA/BEGIN (resync after ack loss), stage-labeled
  timeouts with raw-rx dump
- verified on hardware: UART OTA full pass (55.7KB/41s, 4-5 lost frames
  auto-recovered) + BLE OTA regression pass; docs: dev log 44,
  ble_protocol.md 6.6 rework, AGENTS.md sync

2026-09-04 20:19:00 +08:00

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 {
   "file": "caiic_ble_dual_ota_app2.bin",
   "target_bank": 2,
   "size": 55708,
   "crc32": "0xDAAEED74",
   "version": 65557
 }