torlando-tech 48382b2f9f feat: T:SCREENSHOT + T:SHOW serial commands + host-side capture ...

New testing/docs surface for grabbing the active LVGL screen as a
PNG over USB-CDC. Useful both for documentation (round-trip capture
of every public screen via T:SHOW <name> + T:SCREENSHOT) and
automated UI regression tests.

On-device:
  - lib/lv_conf.h — enable LV_USE_SNAPSHOT (~5 KB code; uses PSRAM
    via the existing hybrid allocator so internal RAM is unaffected)
  - src/main.cpp — T:SCREENSHOT handler takes an lv_snapshot_take()
    of lv_scr_act() under LVGL_LOCK(), dumps a delimited base64
    stream over CDC. Inlines a tiny base64 encoder (no new dep).
  - src/main.cpp — T:SHOW <name> dispatches to UIManager::show_*()
    for the six publicly-navigable screens (conversation_list,
    compose, announces, status, settings, propagation_nodes).

Wire format:
  T:SCREENSHOT BEGIN W=320 H=240 FMT=rgb565<be|le> BYTES=153600
  <base64 line, 76 chars>
  ...
  T:SCREENSHOT END

Host side:
  - screenshot.py — auto-detects the pyxis port via T:ID probe,
    sends T:SCREENSHOT, reads until END, filters out interleaved
    log lines (heap heartbeats / BLE stats can splice in
    mid-dump), validates byte count matches header, decodes RGB565
    with the documented byte order, expands channels via 5→8 / 6→8
    high-bit replication, saves PNG. Pillow + pyserial.

Catalog:
  - docs/serial_commands.md — full reference for all T:* commands
    accumulated so far (identity/paths/send/receive, propagation,
    voice, BLE, UI). New commands should land here when added.

Throughput: ~205 KB base64 over CDC at 115200 → ~18 s/shot. Fine
for docs and automated tests, not video. Bumping baud or zlib-
compressing on-device is queued in the doc as future work.

2026-05-10 15:23:39 -04:00

..

flasher

Fix web flasher versioned releases failing with CORS error

2026-03-03 20:57:38 -05:00

serial_commands.md

feat: T:SCREENSHOT + T:SHOW serial commands + host-side capture

2026-05-10 15:23:39 -04:00