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12-OBD-Speed: choose the background GIF from the SD card

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- background page (4th tile): built-in or any GIF in /gifs on the SD card
- chosen GIF is copied into a raw 11.9 MB 'bggif' flash partition (header
  written last) and played memory-mapped from flash; SD only needed when
  choosing or when the file changed (checked at boot in the background)
- own partitions.csv: 4 MB app + bggif + NVS
- tools/gif_to_360.py: convert GIFs to 360x360 keeping frame timing;
  converted output (12-OBD-Speed/sd/) is git-ignored

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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patriandClaude Opus 5.5 committed 2026-10-23 18:58:44 +02:00
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commit c9fb70ad10
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CLAUDE.md
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@@ -78,8 +78,9 @@ Display color format is `RGB565_SWAPPED` (ST77916 byte order, set in `lv_conf.h`
|---|---|
| `1-Instructions` | Spec PDF (duplicate), AIDA64 remote-sensor layout `aida_remote_1.85.rslcd`, MJPEG conversion tool (Windows .NET, converts video to 360×360 MJPEG 25 fps) |
| `2-Program Example/Demo_Arduino` | **Vendor only:** `library/` (3 libs), `lv_conf.h` (vendor original), `sd/` (SD listing example; its lv_conf.h has FATFS edits), `docs/` (setup screenshots + compile instructions). The vendor's original LVGL demo sketch no longer exists unmodified. |
| `tools` | `gif_to_360.py` — converts GIFs to 360×360 for the device (Pillow; scale to cover + center crop, keeps frame timing) |
| `shared` | **Shared code for all JC3636W518 projects:** `jc3636w518.ini` (PlatformIO base config), `include/lv_conf.h` (LVGL 9.6), `lib/JC3636W518` (board library). See its `README.md` |
| `12-OBD-Speed` | **The new program — working in the car (2026-10-23):** speed from the ELM327 over BLE as big number + arc gauge on a GIF background, battery-voltage arc in the bottom gap, idle/screen-off mode (both **verified by the user**); swipe left for the adapter menu (scan, select → remembered in NVS, auto-reconnect every 3 s), again for settings (rotation, idle/screen-off timeout). See its `README.md` |
| `12-OBD-Speed` | **The new program — working in the car (2026-10-23):** speed from the ELM327 over BLE as big number + arc gauge on a GIF background, battery-voltage arc in the bottom gap, idle/screen-off mode (both **verified by the user**); swipe left for the adapter menu (scan, select → remembered in NVS, auto-reconnect every 3 s), again for settings (rotation, idle/screen-off timeout), again for the background (GIF from SD `/gifs` copied into an 11.9 MB raw flash partition, own `partitions.csv`). See its `README.md` |
| `10-GIF-Tests` | **GIF playback experiments** (was `10-OBD-Display-2024`): `display_gif_embedded`, `display_gif_sd`, `assets/gifs`. The 2024 bridge/ELMulator/WiFi speed sketch, the broken LVGL 9 archive and the BLE scanner tool (`11-BLE-Scanner`: on-screen scan, GATT listing, ELM test, LittleFS log) were removed 2026-10-23 — all in git history |
| `3-Specification` | Spec sheet (factory firmware features, interface photo) |
| `4-Chip manual` | ESP32-S3R8 datasheet, PCM5100A datasheet |