This release introduces new USB VID/PID official descriptors and bug fixes.

New

• Added RTC set/get support, including RTC association with credentials.
• Added vendor commands via CCID.
• Introduced new USB descriptors allocated to PicoKeys.
• Added Rescue support for RP2040.

Enhancements

• Reorganized project tree and build layout, including ESP32 restructuring.
• Added sanity checks to prevent handling of oversized packets.
• Upgraded to the new firmware/layout structure.
• Migrated and cleaned up RTC handling across the codebase.
• Added weak init callback.
• Added PHY marker for RP2040 to preserve serial number in BOOTSEL.
• Added 8K binding partition for RP2350.

Fixed

• Fixed CCID maximum packet length handling and interface naming.
• Fixed SHA-256 alternative implementation.
• Fixed LED default parameters on Pimoroni boards.
• Fixed incorrect or incomplete interface string handling when not all interfaces are enabled.

Changed

• Updated to new VID:PID assigned to Pico HSM.

Full Changelog: https://github.com/polhenarejos/pico-hsm/compare/v6.2...v6.4