micheleandClaude Sonnet 5
3e5cfe814d
Bass Boost1/SPhat1 enhancement blocks Replaces the 74-parameter ADAU1701 program with the new 224-parameter SigmaStudio export. The new netlist has no mixer -- MX1 is an exclusive selector (DC1) passing through exactly one of three stereo pairs (radio/bluetooth/beep) instead of blending them with independent gains. core::MixSource/MixerState are gone; core::ActiveSource plus IDsp::selectSource() replace applyMixer()/setInputVolume() throughout the driver/service/API stack. AudioProfile.mixer -> activeSource; the HTTP "mixer" JSON object -> a single "active_source" string. DC1 turned out to need a raw 32-bit integer (0/1/2), not the 5.23 fixpoint its compiled TYPE_DC1 macro implies -- confirmed live by writing both encodings and listening for which one actually switched sources. Documented in Adau1701Driver::selectSource() and adau1701::paramSourceIndex(). Bass Boost1 and SPhat1 are real ADI algorithm blocks in this revision, so core::applyEnhancementsToEq() (the old EQ-band-overwrite hack for bass/stereo enhancement) is deleted; IDsp::setBassBoostLevel()/ setStereoSpreadLevel() scale each block's compiled coefficients toward identity/unity instead. Confirmed live: Bass Boost audible on real program content (not a static test tone -- the algorithm is dynamics- based), Stereo Spread audible but subtle. The EQ "locked" flag from 2026-08-24 (enhancements silently overwriting manually-set bands) no longer applies to bands 1-5. A full sweep of all 223 non-DC1 named parameters (writing each back to its own compiled default) completed with zero failures, confirming the whole new address space is reachable. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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.