AnasSarkiz/usb-c-pd-brushed-motor

docs/IMPLEMENTATION-CHECKLIST.md

# A22 implementation checklist — in progress

The intended endpoint is a routed prototype and reviewed fabrication package.
This checklist records remaining work under the user’s authorization to complete native routing and prepare prototype manufacturing files. It does not qualify hardware or authorize an order.

- [x] Update tscircuit to 0.0.2743 and recheck supplier imports.
- [x] Fix native mounting-hole and board-label associations in core source; preserve strict schemas.
- [x] Add typed board assembly intent for plated-hole paste; preserve SMT paste and original models.
- [x] Build/test core and props source fixes; install reproducible tarballs consistently for transitive consumers.
- [x] Reconcile 140 components / 58 exact supplier codes; add seven supplier-backed programming/measurement contacts.
- [x] Correct input-current margin with validated C23215 / 6.98 kΩ and conservative PD policy.
- [x] Expand regenerative bank to four parallel 20 Ω branches; implement component tolerance/derating/pulse screens.
- [x] Implement actual sequencer GPIO outputs with inhibition, readback and feedback-state protection.
- [x] Rearm ADC after idle; exercise stale flags, stuck state, lost writes and rollover.
- [x] Revalidate functional capacitor/compensation/feedback placement and artwork: all5 native checks, full artifact audits,163 labels and both-face/all8-sheet visual review pass.
- [x] Complete current 58-part import audit, all eight A4 sheet reviews and metadata warning reconciliation.
- [x] Close C18 terminal/land/process envelope; define hand-solder assembly instructions.
- [x] Close converter transient/DCM/thermal/MLCC/ripple-sharing and regenerative energy envelope.
- [x] Implement qualified timestamped ADC intervals; justify clock/accuracy/reference/filter assumptions.
- [x] Implement bounded target I2C, timebase, clock, watchdog, startup/vector/linker and serialized runtime.
- [x] Link ELF/BIN, measure flash/RAM, and run integrated fault regressions.
- [ ] Establish documented fresh PD-message provenance ; independently manufacturer-approved40-byte NVM and measured RX-path approval remain external bring-up dependencies.
- [x] Pass fresh complete-board prerequisite checks with physical pad ownership,2 mm PD fanout margin and unchanged supplier models.
- [x] Finish canonical fanout drill/corner regression suite; integrate validated source-built core2089/fanout83 and checksum-verified Bun1.4.2.
- [x] Validate four-layer JLC04161H-7628 placement, unchanged imports/full-stack vias and inner-copper audits after two-layer routing failures.
- [x] Correct canonical repair clearance propagation and same-net via/pad policy; retain independent regressions and exact installed package binding.
- [ ] Complete native41 routing and pours; measure actual geometry/current paths.
- [ ] Run routed strict checks, shorts, snapshots and visual copper review.
- [ ] Generate and review Gerber/drill/BOM/PnP outputs bound to exact source/firmware/dependency hashes.
- [ ] Commit and publish each validated milestone to known destinations; continue implementation afterward.

Potential external dependencies to exhaust: manufacturer NVM export tool and undocumented
PD response provenance. No unsupported bytes or SOP encodings have been invented.
Physical ADC/noise/thermal/stall/reversal measurements remain pending prototype tests.
The task repository has no GitHub remote; local work continues without inventing one.