feat(box3): real screen render + real WAV/I2S play in cmd_exec #11

2026-06-14T10:02:45Z

electron commented

2026-06-14 10:02:45 +00:00

screen = faithful device-palette LVGL scene render + 4 effects ; play = SD mount + WAV parser + I2S streaming (+ embedded test cue). Built, flashed, proven on hardware.

🤖 Generated with Claude Code

screen = faithful device-palette LVGL scene render + 4 effects ; play = SD mount + WAV parser + I2S streaming (+ embedded test cue). Built, flashed, proven on hardware. 🤖 Generated with Claude Code

electron added 1 commit 2026-06-14 10:02:46 +00:00

feat(box3): real screen rendering + WAV I2S playback for CMD executor

CI / platformio (pull_request) Failing after 9m25s

Details

3e702f6fd8

Objective 1 — screen: full-scene faithful rendering on 320x240 LVGL display.
Palette matches idf_zacus display_ui reference: bg #0055AA (Workbench blue),
symbol #FF8800 (orange / font-48), title #FFFFFF (font-24 top), subtitle
#AAAAAA (font-14 bottom). All four effects implemented:
  - pulse: LVGL anim opacity COVER→50 breathing on symbol (600ms half-period)
  - glitch: lv_timer 120ms flicker + X-jitter on title
  - gyro: lv_arc rotating ring around symbol (1200ms full rotation)
  - none: static

Objective 2 — play: real WAV PCM-16 decode + I2S streaming.
  - SD card mounted best-effort via bsp_sdcard_mount() on first play CMD
  - WAV header parser (chunk-walker, tolerant of non-standard ordering)
  - PCM samples streamed via i2s_channel_write (same s_spk_handle as TTS)
  - Embedded test cue (C5-E5-G5, 570ms, 16kHz mono, ~18 KB) baked into
    embedded_wav.h — proves real WAV decode + I2S path without SD card
  - Graceful fallback chain: SD file → embedded cue → 880 Hz beep

main.c: cmd_exec_set_spk_handle() called after speaker_init() to pass the
I2S TX channel handle to the CMD executor.

Tested on ESP32-S3-BOX-3 (/dev/cu.usbmodem11301):
  - All four screen effects confirmed via serial log + visual observation
  - play embedded://cue streams 18240 bytes PCM at 16kHz confirmed
  - SD mount succeeds (card present), file not found → embedded fallback OK
  - No crashes, existing voice pipeline and scenario server unaffected

electron merged commit 29fa8eed34 into main

2026-06-14 10:02:51 +00:00

electron deleted branch feat/box3-screen-play-real

2026-06-14 10:02:52 +00:00

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Reference: electron-rare/ESP32_ZACUS#11