Well you can try and compile Marlin for the STM32F030R8 of that cape, but I don’t see that exact chip being supported in Marlin’s platformio.ini. Also according to its datasheet the chip only has 64kB of flash and 8kB of RAM, which isn’t really much for a 32-bit microcontroller. I doubt that Marlin will fit on that chip (of course this also depends on the enabled features…). The only STM32F0 series chip in Marlin I’m seeing is a STM32F070RB with 128kB of flash and 16kB of SRAM. The usual lower bar is something like an STM32F103RB with 256kB of flash and 48kB of SRAM.