sferic-tab5

sferic fleet-station firmware for the M5Stack Tab5 (ESP32-P4). Plan of record: sferic-sticks3 ADR-0013. Pairs with sferic-collector (the C2 server) and sferic-sticks3 (the StickS3 firmware — where the board-agnostic code lives).

Status: bring-up spike

Only src/main.cpp — the ADR-0013 §2 bring-up spike. It answers "what works on this board" before any tool or UI code is ported. Results: SPIKE-RESULTS.md.

• ✅ toolchain (pioarduino + M5Unified compiles + flashes for ESP32-P4)
• ✅ display / touch / IMU / 32 MB PSRAM
• ⚠️ SD — SD_MMC times out (card? pin config?)
• ⚠️ keyboard — not on either I2C bus; connection method TBD
• ⚠️ radio (ESP32-C6) — link works with WiFi.setPins(); STA + scan OK, but monitor mode is ESP_ERR_NOT_SUPPORTED over esp_hosted (ADR §2 gate — answered). Tab5 wifi.* = scan/AP class only.

Toolchain

The ESP32-P4 needs the pioarduino platform fork (the official PlatformIO espressif32 has no P4 support), and pioarduino's build scripts

• bundled esptool v5 need PlatformIO Core ≥ 6.2 on Python ≥ 3.10.

# isolated PlatformIO on Python 3.12 (keeps the StickS3's 3.9 pio untouched)
uv tool install --python 3.12 platformio
~/.local/share/uv/tools/platformio/bin/python -m pip install -U \
  https://github.com/platformio/platformio-core/archive/develop.zip   # 6.2.0b2
~/.local/share/uv/tools/platformio/bin/python -m pip install 'click<8.2'  # esptool compat

~/.local/bin/pio run -e spike            # build
~/.local/bin/pio run -e spike -t upload  # flash
~/.local/bin/pio device monitor          # serial

Next

1. Unblock the C6 — get esp_hosted / the C6 slave firmware talking over SDIO, then re-run the monitor-mode probe (ADR-0013 §2).
2. Sort SD (SD_MMC pins / peripheral) and the keyboard connection.
3. Copy the board-agnostic sources from sferic-sticks3 (ui_kit, theme, registry, dispatch, link, transports) + a Tab5 board_profile.h (1280×720, touch + keyboard) — ADR-0013 §1, §4.
4. New toolset specs: docs/mcp/{camera,thread,usbhost,canbus}.md.

License

MIT © 2026 ry-ops

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