Files
planar-EL512.256-H/esphome/el512-smoke.yaml
T
mangavalkandClaude Opus 5.5 963590cdfe Add ESPHome display component; ring-buffer driver shared with PlatformIO
Driver (components/el512/el512_panel.*, ESP-IDF only):
- DMA ring of 8 x 4 lines (17 KB) refilled from the I2S EOF interrupt
  (IRAM) instead of a 142 KB full-frame stream; ~107 KB heap freed.
- 256-entry lookup table encodes 8 pixels per step.
- Back buffer + displayed buffer, swapped at the start of a frame.
- PlatformIO builds it via lib_extra_dirs (EL512Core); lib/EL512 keeps
  the Adafruit GFX front end.

ESPHome external component (platform: el512):
- DisplayBuffer with optional ENABLE / _LOWPWR pins, set_enabled(),
  set_low_power(), helper functions for page lambdas.
- still_alive_page: plays the Portal end-credits show, then returns to
  the previous page.

Still Alive engine moved to components/el512/still_alive.* with a built-in
5x7 font (from Adafruit GFX, BSD); the PlatformIO demo uses the same code.
The importer writes components/el512/still_alive_data.h and stops at 200 s
(--until-ms), matching the hand-trimmed data.

esphome/el512-panel.yaml: 8 pages (clock, forecast, agenda, dashboard,
now playing, Plex, solar, Still Alive), page select, rotation, display
and low-power switches, message text. home_assistant/packages/el512_panel.yaml:
helper template sensors for forecast, agenda, now playing and Plex streams.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-18 20:20:13 +02:00

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YAML

# Minimal bring-up test for the el512 component (no Wi-Fi).
esphome:
name: el512-smoke
esp32:
board: wemos_d1_mini32
framework:
type: esp-idf
logger:
external_components:
- source:
type: local
path: ../components
font:
- file: "gfonts://Roboto Mono"
id: mono
size: 20
display:
- platform: el512
id: panel
update_interval: 1s
lambda: |-
it.rectangle(0, 0, it.get_width(), it.get_height());
it.line(0, 0, it.get_width() - 1, it.get_height() - 1);
it.print(10, 10, id(mono), "ESPHome on EL512.256-H");
it.printf(10, 40, id(mono), "uptime %lus", (unsigned long) (millis() / 1000));
it.filled_circle(it.get_width() / 2, it.get_height() / 2, 40);