- Hall sensor + LP5562 EN wired-AND circuit design (DRV5032FB/FE,
1M pull-up, open-drain topology) with three interaction modes:
boot-time recovery, tap-to-swap, hold-to-confirm recovery
- NTAG5 config check tool (tools/ntag5_config_check.py) using
uFCoder library for ISO15693 transparent mode via uFR Zero reader.
Supports inventory + addressed mode for multi-tag fields.
- Updated DEVELOPMENT_PLAN with I2C bus management notes for
LP5562 (0x30) + NTAG5Link (0x54) shared bus
- Updated README with wired-AND hardware diagram, hall sensor
interaction section, and updated wiring table
- Updated CLAUDE.md with LP5562 EN wired-AND topology docs
- Updated STATUS.md with hall sensor decisions and hardware inventory
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Set up Rust embedded project targeting SAMD21 (thumbv6m-none-eabi) with
XIAO M0 BSP for dev board prototyping. Includes LP5562 EN pin control
on D0/A0, project documentation (README, CLAUDE.md), phased status
tracker, and detailed development plan covering LP5562 driver integration,
NTAG5Link I2C driver, pattern storage format, power management, NFC
communication protocol, recovery mode, and firmware update strategy.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
