Files
onefinity-firmware/README.md
Henrik Muehe 4109f9f838 docs: A axis architecture (renamed from W) + README section
- Move docs/AUX_W_AXIS.md to docs/AUX_A_AXIS.md and rebadge W -> A
  throughout, with a header note pointing at ExternalAxis as the
  current implementation.
- README: A-axis fork heading, link to AUX_A_AXIS.md, /api/aux/status
  in verify-flash, small comment in scripts/deploy/local.sh.
2026-05-03 15:14:25 +02:00

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# OneFinity CNC Controller Firmware (A-axis fork)
This is the community-fork firmware (V09 UI, FA6, cold-boot work,
macOS dev tooling) with a virtual A axis driven by an auxcnc ESP32
over USB serial. See [docs/AUX_A_AXIS.md](docs/AUX_A_AXIS.md) for the
design and config.
## Layout
```
src/avr/ AVR firmware (motion controller, AtxMega)
src/boot/ AVR bootloader
src/bbserial/ Linux kernel module for the bbserial driver
src/py/bbctrl/ Python control daemon (Tornado + websockets)
src/js/ Vue.js UI (legacy)
src/svelte-components/ Newer Svelte UI for dialogs and settings
src/pug/ Pug templates compiled into build/http/index.html
src/resources/ Static assets and config templates
scripts/ Install / update / RPi build helpers
docs/ Architecture, dev setup, A-axis docs
```
## Build & flash (quick path, macOS or Linux)
The full build (`make`) requires `avr-gcc`, but the controller and UI
only depend on the Python + web parts. If you're shipping a UI/Python
change you don't need the AVR toolchain.
### Prerequisites
- Node.js (any recent LTS) with npm
- Python 3 with setuptools
- `npm install` once at the project root (this is wired into the
`node_modules` Make target, but on a fresh checkout it's clearer to
do it explicitly)
```bash
npm install
(cd src/svelte-components && npm install)
```
#### macOS gotcha: esbuild platform pin
The Pi build leaves `node_modules/esbuild` pinned to
`linux-arm64`, which won't run on Darwin. If `npm run build` inside
`src/svelte-components` complains about esbuild, reinstall it for the
host:
```bash
cd src/svelte-components
rm -rf node_modules/esbuild
npm install esbuild@0.14.49 --no-save
```
(Use the version that matches `package-lock.json`.)
### Build the web UI + Python sdist
```bash
# Build the Svelte components
(cd src/svelte-components && npm run build)
# Render pug templates and copy assets into build/http
make all # AVR step will fail without avr-gcc; safe to ignore
# if you didn't change anything under src/avr or src/boot
# Package
./setup.py sdist
ls dist/bbctrl-*.tar.bz2
```
`make pkg` is the canonical target but it tries to build AVR first. On
hosts without avr-gcc, run the steps above directly.
If `bbctrl-*.tar.bz2` is missing `src/bbserial/bbserial.ko`, copy the
prebuilt `.ko` from a previous official release into `src/bbserial/`
before running `setup.py sdist` (the install script on the controller
just installs the existing module if a newer one isn't shipped).
### Flash to a controller
```bash
curl -X PUT -H "Content-Type: multipart/form-data" \
-F "firmware=@dist/bbctrl-1.6.7.tar.bz2" \
-F "password=onefinity" \
http://onefinity.local/api/firmware/update
```
…or use the Make target:
```bash
make update HOST=onefinity.local PASSWORD=onefinity
```
The controller stops bbctrl, untars the package, runs
`scripts/install.sh`, and brings the service back up. Total downtime
is ~30-45s. Watch progress at `http://<host>/` (you'll get 404s while
bbctrl restarts, then the new UI).
### Verify the flash
```bash
curl -s http://onefinity.local/ | grep -c "OneFinity"
curl -s http://onefinity.local/api/diag/timing | head
curl -s http://onefinity.local/api/aux/status # if A axis is enabled
```
## Build & flash (full path, Debian/Linux)
For AVR + GPlan rebuilds, see [docs/development.md](docs/development.md).
That path uses qemu + chroot to cross-compile gplan for ARM and needs
the `gcc-avr` / `avr-libc` toolchain.
## A axis (auxcnc)
This fork adds a virtual A axis. See
[docs/AUX_A_AXIS.md](docs/AUX_A_AXIS.md) for:
- G-code surface (`G28 A0`, `G1 A25`, etc.)
- The G-code preprocessor and hook architecture
- aux.json keys
- REST API (`/api/aux/*`)
- UI surface (jog row in Control, settings panel in Settings)
- Edge cases (ESP reboot mid-job, limit closed at home start, …)