rick/LEDMatrix
1
0
Fork 0
mirror of https://github.com/ChuckBuilds/LEDMatrix.git synced 2026-10-13 10:36:35 +00:00
Code Issues Packages Projects Releases Wiki Activity
Files
2d7a687a02a3c24eccaac152a4f4a4c3bd29ec2c
LEDMatrix/docs/CONFIG_REFERENCE.md
T
ChuckandClaude Opus 5 2d7a687a02 feat: refuse matrix settings a Raspberry Pi 5 can't drive 
On a Pi 5 the pinned rgbmatrix library drives the panel through the RP1
chip, and that path supports only row address types 0 and 2, parallel 1-3
and the regular / regular-pi1 / classic / adafruit-hat(-pwm) mappings
(Rp1PioConfigSupported in lib/rp1/rp1_pio_backend.cc). For anything else
CreateFromOptions returns NULL; the Python binding doesn't check, so the
display process crashed on its first call into the matrix and systemd
restarted it into the same crash every 10 seconds.

- src/pi5_matrix_support.py: the rule and Pi 5 detection, matching the
  library's /proc/device-tree/model check
- DisplayManager raises before creating the matrix, so it is a logged init
  failure (reported by /api/v3/hardware/status) and fallback mode
- the config API rejects those settings on a Pi 5 when a request sets
  row_address_type, parallel or hardware_mapping
- the Display form offers only row address types 0 and 2 on a Pi 5, and
  warns when a stored value can't be used
- CLAUDE.md: re-check the rule whenever the submodule is bumped

Review feedback on #586.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-15 18:10:29 -04:00

178 lines
9.8 KiB
Markdown
Raw Blame History

This file contains ambiguous Unicode characters
This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
# Configuration Reference
Every key in `config/config.json`, what it does, its default, and where the
code reads it. The file is created from `config/config.template.json` on
first run, and `ConfigManager._migrate_config()` merges any template keys
added by later releases into your existing config (your values are never
overwritten). Secrets live in `config/config_secrets.json` and are merged
into the config at load time.
Most settings are editable from the web interface; this page documents the
underlying keys for people editing `config.json` directly or writing
tooling against it.
## Top level
| Key | Type / default | Meaning | Read by |
|---|---|---|---|
| `web_display_autostart` | bool, `true` | Whether the web interface service starts with the system | `scripts/utils/start_web_conditionally.py` |
| `timezone` | string, `"America/New_York"` | IANA timezone for schedules and displays | `ConfigManager.get_timezone()` |
| `target_fps` | int, `100` | Frame-rate ceiling for plugin rendering | `src/plugin_system/base_plugin.py`, `src/common/sports_scroll.py` |
| `location` | object | `city` / `state` / `country`. Supplies the **default** for a plugin's own `location_city` / `location_state` / `location_country` setting, so weather, radar and friends follow this device without being configured twice. A value saved on the plugin itself still overrides it. | `SchemaManager.apply_device_location()`, then plugins via merged config |
## `schedule` — display on/off hours
| Key | Type / default | Meaning |
|---|---|---|
| `enabled` | bool, `false` | Master switch for scheduled display on/off |
| `mode` | `"global"` or `"per-day"`, template uses `"per-day"` | Whether one time range applies to all days or each day has its own |
| `start_time` / `end_time` | `"HH:MM"`, `07:00`–`23:00` | Global-mode on/off times |
| `days.<weekday>.{enabled,start_time,end_time}` | per-day objects | Per-day-mode overrides |
Read by `DisplayController` (`src/display_controller.py`, `_check_schedule`
around line 603). Managed in the web UI under Schedule.
## `dim_schedule` — scheduled brightness dimming
Same shape as `schedule`, plus:
| Key | Type / default | Meaning |
|---|---|---|
| `dim_brightness` | int, `30` | Brightness percentage applied while the dim window is active |
Read by `DisplayController` (`src/display_controller.py` around line 770;
saved via `POST /api/v3/config/dim-schedule`). The display returns to
`display.hardware.brightness` outside the window.
## `display.hardware` — matrix panel hardware
All keys map to the corresponding `rpi-rgb-led-matrix` options and are read
in `DisplayManager` (`src/display_manager.py`, ~lines 270–295).
| Key | Type / default |
|---|---|
| `rows` / `cols` | int, `32` / `64` — rows: even, at least 8, no upper limit here (the current rgbmatrix library rejects more than 64); cols: at least 16, no upper limit |
| `chain_length` | int, `2` — at least 1, no upper limit |
| `parallel` | int, `1` — 1–3 |
| `brightness` | int, `90` — 1–100 |
| `hardware_mapping` | string, `"adafruit-hat"` (code default `"adafruit-hat-pwm"`) |
| `scan_mode` | int, `0` — `0` progressive, `1` interlaced |
| `pwm_bits` | int, `9` (code default 10) — 1–11 |
| `pwm_dither_bits` | int, `1` — 0–2 |
| `pwm_lsb_nanoseconds` | int, `130` (code default 150) — 50–3000 |
| `disable_hardware_pulsing` | bool, `false` — `true` times brightness pulses in software (less exact); hardware pulsing needs the OE line on GPIO 18 and the Pi's onboard sound driver off |
| `inverse_colors` | bool, `false` |
| `show_refresh_rate` | bool, `false` — prints the refresh rate to stdout; draws nothing on the panel |
| `led_rgb_sequence` | string, `"RGB"` — `"RGB"`, `"RBG"`, `"GRB"`, `"GBR"`, `"BRG"` or `"BGR"` |
| `limit_refresh_rate_hz` | int, `100` (code default 90) — `0` = no cap; scroll timing assumes 100 Hz when `0` |
| `pixel_mapper_config` | string, `""` — e.g. `"U-mapper"` / `"Rotate:90"` |
| `orientation` | string, `"normal"` — `"180"` rotates the rendered image 180° for panels physically mounted upside down (e.g. to move the Pi/wiring to a more convenient side); composed onto `pixel_mapper_config` as a trailing `Rotate:180` mapper, so it stays independent of any custom `pixel_mapper_config` value |
| `row_address_type` | int, `0` — non-standard panel row addressing: `1` AB, `2` direct row select, `3` ABC, `4` ABC shift + DE direct, `5` SM5368 / B707 row shift register (e.g. Waveshare 96x48 V2, with `led_rgb_sequence` `"BGR"`). On a Pi 5 the library supports only `0` and `2`, and LEDMatrix enforces that (`src/pi5_matrix_support.py`) |
| `multiplexing` | int, `0` — 0–22, pixel wiring scheme for outdoor/specialty panels (names listed in the README) |
| `panel_type` | string, `""` — set to `"FM6126A"` or `"FM6127"` for panels needing init; FM6124 / FM6124D / FM6124DJ panels need none, so leave it `""` |
Where "code default" differs from the template value, the code default only
applies if the key is missing entirely from your config.
## `display.runtime`
| Key | Type / default | Meaning |
|---|---|---|
| `gpio_slowdown` | int, `3` | GPIO timing slowdown for faster Pis (0–10). Panels on `row_address_type` `5` (SM5368 row drivers) can need 6–8 on a Pi 4 — lower values make rows jump |
| `rp1_rio` | int, `0` | Pi 5 only: `0` = PIO (less CPU), `1` = RIO (higher refresh; `gpio_slowdown` effect inverted). Applied only if the installed matrix library supports it |
## `display.double_sided`
Drives `_LogicalMatrix` in `src/display_manager.py` — renders the same
logical image to multiple chained physical panels.
| Key | Type / default | Meaning |
|---|---|---|
| `enabled` | bool, `false` | Mirror output across panel copies |
| `copies` | int, `2` | Number of physical copies in the chain |
| `axis` | `"horizontal"`, default | Axis along which panels are chained |
## `display` — other keys
| Key | Type / default | Meaning | Read by |
|---|---|---|---|
| `display_durations` | object, `{}` | Per-plugin display duration in seconds, keyed by plugin id (e.g. `"clock": 15`) | `src/display_controller.py:1030` |
| `plugin_rotation_order` | array, `[]` | Explicit rotation order of plugin ids; empty = all enabled plugins in discovery order | `src/display_controller.py:2894` |
| `use_short_date_format` | bool, `true` | Compact date rendering in sports scoreboards | `src/base_classes/sports/core.py` |
| `dynamic_duration.max_duration_seconds` | int, optional | Cap for plugins that request dynamic display time | `src/display_controller.py:405` |
## `display.vegas_scroll` — continuous scroll mode
Read by `src/vegas_mode/config.py` (`VegasScrollConfig.from_config`). See
[ADVANCED_FEATURES.md](ADVANCED_FEATURES.md) for behavior details, including
[live content in the ticker](ADVANCED_FEATURES.md#live-content-in-the-ticker).
| Key | Type / default |
|---|---|
| `enabled` | bool, `false` |
| `scroll_speed` | int, `50` (px/s) |
| `separator_width` | int, `32` |
| `plugin_order` | array, `[]` |
| `excluded_plugins` | array, `[]` |
| `target_fps` | int, `125` |
| `buffer_ahead` | int, `2` |
| `intra_plugin_gap` | int, `8` |
| `render_width_pct` | int, `100` |
| `min_content_separation` | int, `24` |
| `min_cut_gap` | int, `6` |
| `continuous_scroll` | bool, `true` |
| `smooth_scroll` | bool, `true` |
| `extend_threshold_screens` | float, `2.0` |
| `auto_trim` | bool, `true` |
| `trim_threshold` | int, `10` |
| `content_padding` | int, `8` |
| `min_plugin_width` | int, `8` |
| `lead_in_width` | int, `0` |
| `plugins_per_cycle` | int, `6` |
| `max_plugin_width_ratio` | float, `0.0` |
| `overflow_mode` | string, `"rotate"` |
| `dynamic_duration_enabled` | bool, `true` |
| `min_cycle_duration` | int, `60` |
| `max_cycle_duration` | int, `240` |
| `frame_based_scrolling` | bool, `true` — frame-count-based scroll stepping |
| `scroll_delay` | float, `0.02` — seconds between scroll updates (~50 FPS) |
| `live_in_ticker` | bool, `false` — keep scrolling during live games instead of handing the display to a full-screen scoreboard |
| `live_weight` | int, `3` (1–10) — slots per cycle for a plugin with live content |
| `favorite_live_weight` | int, `5` (1–10) — slots per cycle when a plugin reports a favorite team is live |
## `sync` — multi-display synchronization
Read by `src/common/sync_manager.py` and `src/display_controller.py`.
| Key | Type / default | Meaning |
|---|---|---|
| `role` | `"standalone"` (default), `"leader"`, or `"follower"` | This device's role in a synced pair |
| `port` | int, `5765` | TCP port used for sync traffic |
| `follower_position` | `"left"` (default) or `"right"` | Which half of the combined image this follower renders (`src/display_controller.py:522`) |
## `plugin_system`
Read by the plugin loader/manager (`src/plugin_system/`).
| Key | Type / default | Meaning |
|---|---|---|
| `plugins_directory` | string, `"plugin-repos"` | Where the Plugin Store installs plugins |
| `auto_discover` | bool, `true` | Scan the plugins directory at startup |
| `auto_load_enabled` | bool, `true` | Load discovered plugins automatically |
| `development_mode` | bool, `false` | Development conveniences in the web UI (editable under General settings) |
## Plugin config blocks
Every installed plugin stores its settings under a top-level key equal to
its plugin id (the template ships one for the bundled `web-ui-info`
plugin). The shape of each block is defined by that plugin's
`config_schema.json`; common keys are `enabled` and `display_duration`.
See [PLUGIN_CONFIG_CORE_PROPERTIES.md](PLUGIN_CONFIG_CORE_PROPERTIES.md).
## `config/config_secrets.json`
| Key | Meaning |
|---|---|
| `github.api_token` | Optional GitHub token the Plugin Store uses to avoid API rate limits (`src/plugin_system/store_manager.py:348`) |
| `<plugin-id>.*` | Secrets a plugin declares with `"x-secret": true` in its config schema; merged into that plugin's config at load time |
Reference in New Issue View Git Blame Copy Permalink