Gden 1.USB Functionality:
The USB interface is currently not enabled in the standard firmware and cannot be activated for use.
2.Power Supply & Charging:
Your understanding is correct. However, that the battery charging function via the +5V pin is not currently implemented in the FSC-BT1036C model.
3.Battery Charging Mode:
The battery charger is set to OFF by default, and this setting cannot be changed in the current firmware.
Should you require USB functionality or battery charging management for your project, these would fall under custom firmware development.Please contact our sales team to discuss your specific requirements, and we will be glad to explore a tailored solution for you.