The headline of the refactor. Scan orchestration no longer lives inside a
QObject that reaches through Qt workers for its hardware handles.
core/scan_engine.py — ScanEngine(stage, scope, rotator, plan, out_path,
resume, callbacks). Takes the concrete drivers, blocks in run(), reports
via plain callables, and prompts through an injected blocking callable.
No Qt import anywhere in the path (test_engine_imports_without_qt proves
it), so a simpler GUI or a CLI can drive the identical acquisition.
Supporting extractions, all Qt-free:
- core/scope_sras.py — SCPI policy: channel profiles, trigger programming,
background average, per-row FastFrame transfer
- core/rotation.py — RotationAxis + RotationSettings (the GR_* constants)
- core/scan_resume.py — frontier contiguity rule + settings compatibility
- gui/scan_bridge.py — QtScanController, exposing exactly the signal
surface the old ScanWorker had, so MainWindow's connections are unchanged
hardware/t3r_driver.py is now Qt-free: a plain Signal class, a threading
reader, and a polling thread instead of QObject/QThread/QTimer.
gui/qt_t3r.py re-emits its callbacks as queued Qt signals for the panels.
Fixes carried by the extraction:
- rotation waits on the driver's MOTION_DONE event instead of
time.sleep(estimate + 0.5)
- abort during an operator prompt now takes effect; the old
_prompt_event.wait() had no timeout and could not be interrupted
- the poll timer is a thread, so an I/O error tearing down the driver no
longer calls QTimer.stop() from the wrong thread
- T3RDriver.disconnect() renamed close(); it shadowed QObject.disconnect()
- per-frame DC means use np.frombuffer over the joined block instead of
struct.unpack per frame (~16k tuple allocations per row)
tests/fakes.py + test_scan_engine.py (14 tests) assert the exact command
sequence, file layout, resume seeking, abort/pause, and geometry
rejection before any hardware call; test_scan_resume.py covers the
frontier rule. 58 passing.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
- core/sras_format.py: THE v6 implementation — create_scan_file (writer,
byte-identical to the old one, enforced against the Phase-0 goldens),
SrasFile parser with frontier/truncation walk, and zero-copy mmap
load_angle/load_row views for multi-GB files
- core/scan_geometry.py: ScanPlan/AngleGeometry dataclasses, build_plan
(rotated-bbox trig from MainWindow._build_scan_params), travel-limit
validate_plan (limits now a StageLimits dataclass, not literals buried
in the worker), format_eta + EtaEstimator (bounded deque)
- core/config.py: ScanDefaults dataclass replaces the module-import-time
dict globals. FIXES: editing any main-window port used to rewrite
aui_defaults.json without helios_port, silently reverting the Helios
port every time (test_helios_port_survives_partial_update covers it).
Also drops the inert laser_freq_hz plumbing — scans always used the
LASER_FREQ_HZ constant.
- hardware/serial_util.py: shared 8N1 open + scored port enumeration
(promoted from t3r_control_panel); helios_laser and the panel use it
- sc3_aui_app.py and sras_scan_manager.py migrated onto core (three
format implementations down to one); ScanWorker now takes a ScanPlan
- tests: byte-identical writer vs golden, frontier over every truncation
variant, mmap==eager, geometry vs golden fixtures + invariants, config
round-trip. 28 passing.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
- uc480_camera: drop never-called _capture_paused/get_framerate (the
hardware question _capture_paused encoded is now in KNOWN_ISSUES.md)
- t3r_protocol: drop read_reg/write_reg/decode_reg/Reg (commands never
wired into the driver)
- bbd20x: drop _update0x0212 (never dispatched) and 8 of 9 unused
trigger convenience wrappers; apt_constants: drop TriggerBitsStepper
(servo-only rig)
- ruff --fix: 35 unused imports across all apps; drop unused T3R_BAUD
- genesis_core.py: quarantine warning header; docs/genesis_verification.md
bench checklist for the 7 divergences vs tools/genesis_laser_gui.py
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Thomas Ales