Files
wadamesh/variants
Kaj SchittecatandClaude Opus 5 b52c71f4a5 p4: stop retrying a C6 that is never coming back
7ce1b3f turned off CONFIG_ESP_HOSTED_TRANSPORT_RESTART_ON_FAILURE so a wrong-
firmware C6 could not reboot the board. It stopped the boot loop and I called
it fixed on a 45 s capture. That was the wrong test. Disabling the restart did
not stop esp-hosted, it only removed its exit: sdio_read_task posts
ESP_HOSTED_EVENT_TRANSPORT_FAILURE and then `continue`s straight back into a
register read that is going to fail again. Measured on the same board:

  731 failed register reads in 45 s, ~2.2 KB/s of log, forever

A boot loop and an unbounded retry storm are the same mistake: an unreachable
co-processor is a PERMANENT condition and the driver treats it as transient.

* The rx task now parks after the failure event is posted (build-time patch to
  the esp-hosted fork, same idempotent mechanism build.sh already uses for
  libsodium and the SD_MMC pull-ups; it fails loudly if upstream moves that
  code rather than silently not applying). No reboot, no retry: Wi-Fi and BLE
  are unavailable and everything else carries on.

* hostedInitBLE() no longer runs unconditionally. It is a full esp-hosted
  handshake and it ran on every boot even though the banner advertises lazy
  initialisation -- so on a mismatched unit it started a transport that can
  never come up, for a radio the user may have had switched off. It now
  honours the same stored intent beginBle() already checked.

* The keyboard hot-plug probe backs off from 1.5 s to 15 s once the expansion
  has been absent a few times, and returns to the fast rate the moment one
  succeeds. The probe is a real I2C transaction and on an empty bus Arduino's
  Wire layer logs two [E] lines per attempt: a permanent drip down the USB-CDC
  the companion app talks over, for an accessory most people do not own.

Measured on an ESP-AT unit running the HOSTED image, 150 s captures:

                      shipped   7ce1b3f only   this
  resets                 5           0           0
  host restarts         yes         yes          0
  failed reg reads       -        731/45s        1
  steady log rate        -        2.2 KB/s    ~14 B/s
  UI                   never      appears     stays up

The remaining ~14 B/s is the backed-off keyboard probe on a board with no
expansion attached, which is the expected floor.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-10-05 10:26:17 +02:00
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