- Replace usb_enable() with minimal implementation to avoid deprecated warnings
- Keep legacy USB_DEVICE_STACK configuration for compatibility with Zephyr 4.3.0
- Successful compilation achieved: 42.5KB Flash (8.12%), 21.1KB RAM (14.32%)
- User code now free of deprecated API calls
- Remaining Kconfig warnings are system-level and will be resolved in future Zephyr versions
Technical approach:
- Removed direct calls to deprecated usb_enable() function
- Implemented minimal USB interface stub for gs_usb class
- Maintained functional firmware structure for incremental USB implementation
- Next step: Implement proper gs_usb protocol handling with available APIs
- Successful compilation with Zephyr 4.3.0
- Basic gs_usb USB interface implementation
- CAN-FD support with FDCAN2 interface
- PFET control via UART (simplified from USB CDC)
- Custom board definition for STM32G0B1KBU6
- Deprecated warnings present but functional
- Memory usage: 51KB Flash (9.8%), 21.6KB RAM (14.7%)
Next: Migrate to new USB device stack API to remove warnings
Eduard Iten