DigiRadio/Software

DigiRadio Firmware

Open-source Hi-Fi DAB+/FM receiver firmware for the ESP32-S3.

Status: fw 0.8.1 — IntegrationService (boot preset recall, tune + audio profile); RDS/DLS now-playing metadata; 13 host tests; CI on main. See docs/TODO.md for the agent task list.

Quick start

Open this directory (Software/) as the Cursor project so AGENTS.md and .cursor/rules/ load automatically.

idf.py set-target esp32s3
idf.py build
idf.py -p <port> flash monitor

Host unit tests (pure core, no hardware):

cmake -S components/core/test -B build-host \
      -DCMAKE_CXX_COMPILER="$(brew --prefix llvm)/bin/clang++"
cmake --build build-host
ctest --test-dir build-host --output-on-failure

Documentation gates (must exit 0 before merging; also enforced in CI):

doxygen Doxyfile
python3 tools/check-manual-sync.py

Manual PDF (design + HTTP API + class reference):

cd docs/manual && latexmk -lualatex manual.tex

HTTP API (fw 0.8.1)

Method	Path	Purpose
GET	/api/health	Status, firmware version, companion-chip flags
POST	/api/wifi	Provision STA credentials; reboot on success
GET	/api/tuner/status	Tuner snapshot (DAB/FM, RDS/DLS metadata)
GET	/api/tuner/services	DAB service list for current ensemble
POST	/api/tuner/tune	Tune DAB ensemble or FM frequency
POST	/api/tuner/play	Start DAB service playback
POST	/api/tuner/seek	FM seek up
GET/PUT	/api/audio/profile	Read/apply ADAU1701 mixer + EQ profile
POST	/api/audio/reset	Factory-flat audio profile
POST	/api/audio/stereo-enhance	Stereo depth overlay (0–100)
POST	/api/audio/bass-enhance	Bass enhance overlay (0–100)
GET	/api/bluetooth/status	BT1035 boot, pairing, A2DP state
POST	/api/bluetooth/pair	Enter discoverable mode
POST	/api/bluetooth/pair/stop	Leave discoverable mode
POST	/api/bluetooth/disconnect	Release A2DP session
GET	/api/stations	List saved presets
POST	/api/stations	Add preset
POST	/api/stations/remove	Remove preset by index
POST	/api/stations/reorder	Move preset (from/to indices)
POST	/api/stations/tune	Recall preset (tuner + audio profile + NVS)

Full schemas, error tokens, and boot flow: docs/manual/ch-api.tex. C++ signatures: doxygen Doxyfile → docs/api/html/index.html.

Layout

Path	Role
Firmware/	Si4684 .bin blobs (DAB+FM) + ADAU1701 SigmaStudio export
components/core/	Pure domain (host-tested)
components/drivers/	Si4684, ADAU1701, BT1035 drivers
components/services/	Tuner, audio, Bluetooth, station, integration services
components/net/	Wi-Fi, HTTP server, gzipped web UI
docs/manual/	LaTeX technical manual (canonical)
docs/TODO.md	Agent task list (prioritised backlog)

See AGENTS.md §12 and instructions.md for coding rules and slice roadmap.

Licence

Apache-2.0 — see LICENSE.