Mutliple Firmware Update, New Polling Method

The project now uses PlatformIO instead of Arduino IDE. One of the main benefits of this change is that it’s much easier to build and maintain multiple firmware variants for different drive configurations. See the README for a full breakdown of the differences between each build.

This update also introduces an additional polling method based on the index pulse. In addition to the existing write-protect polling, you can now choose index-based detection depending on your drive’s behavior.

If you’re upgrading from a previous version, firmware_no_redetect_write_polling.uf2 is equivalent to the firmware that was previously provided.