Port existing LeafLabs Maple C++ code to STM32Cube or CubeMX

[STal.1]

Hello,

I have an old C++ program for LeafLabs Maple running STM32F103RB with DMA, RTClock, Flash, USART, etc. that I wish to port to STM32Cube for STM32F103C8 ). The program uses several of the the Maple STM32 libraries, with many direct registry manipulation commands.

Has anyone any experience in such porting?

My alternative would be to use Arduino for STM32 or re-write the whole thing, with over 1000 code lines.

I prefer to use the Cube (Eclipse based)

Thanks.