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micheleandCursor 2f9f3ef9b3 Expand all README files for firmware 0.8.3.

Align root, Software, and Firmware READMEs with security, CI, web UI, blob policy, and six-band EQ details.

Co-authored-by: Cursor <cursoragent@cursor.com>

2026-07-07 07:50:00 +02:00

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DigiRadio — companion-chip firmware assets

Binary and SigmaStudio exports loaded by the ESP32 at every boot (fw 0.8.3).

Directory	Chip	In git?	Loaded by
`ADAU1701-Firmware/`	ADAU1701 SigmaDSP	Yes (headers)	`Adau1701Driver` — RAM program every boot
`Si4684-Firmware/`	Si4684 DAB+/FM	README only	`Si4684Driver` — HOST_LOAD embedded blobs

Before first device build

Si4684 application images are proprietary and gitignored. Populate locally:

cd Software
python3 tools/fetch_si4684_firmware.py --dab-only
python3 tools/fetch_si4684_firmware.py --si46xx-dir /path/to/si46xx_firmware
python3 tools/check_si4684_blobs.py
ls Firmware/Si4684-Firmware/*.bin   # expect 3 files

Without blobs, idf.py build fails at embed/link time.

Full procurement and legal notes: Si4684-Firmware/README.md.

Si4684 blobs

File	Role
`rom_patch_016.bin`	ROM patch (HOST_LOAD before main image)
`dab_firmware.bin`	DAB+ application (PE5PVB / Skyworks)
`fm_firmware.bin`	FM application (Skyworks eval or community source)

Boot sequence: AN649 — POWER_UP → LOAD_INIT → HOST_LOAD(patch) → LOAD_INIT → HOST_LOAD(image) → BOOT.

ADAU1701 export

SigmaStudio project DigiRadio — exported headers replayed over I2C on every boot (no self-boot EEPROM). Runtime EQ/mixer/enhancements via safeload and the Web UI Audio tab (/api/audio/*).

Details: ADAU1701-Firmware/README.md · manual: docs/manual/ch-adau1701.tex, docs/manual/ch-sigmastudio.tex.

Security note

User settings (Wi-Fi, presets, audio profiles) live in encrypted NVS, not in this folder. See docs/security-flash-nvs.md.

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