Changes include adapting codebases for I2C, SPI, and UART modules to work with MicroPython's machine library. Removed references to CircuitPython-specific libraries and updated configurations for Pin and UART initialization. Simplified import statements and replaced ReadableBuffer type hints with MicroPython's bytes and bytearray types. This migration targets increased accessibility for MicroPython users, ensuring broader hardware support while maintaining core RFID/NFC functionalities. Adjustments also involve file structure and documentation revisions to reflect the MicroPython focus.
- Update `_wakeup` to come out of power_down and put the pn532 back into
normal mode.
- `_wait_ready` now actually checks to see if the pn532 is ready
- improve how data is written out
