Arduino for STM32

If needed, I'll write my own CAN bus library/port a working Arduino/Atmel version to work, but I'm going to start a step back and get SPI to work.. I have looked at the examples and links you posted, but see nothing related to SPI/CAN there
My exact processor is STM32F103C8T6

I'm not looking for a ...

I've got a fair bit of experience with the 8 bit boards, I've fumbled my way through getting basic blink sketches working on the STM platform, gotten bootloaders installed and such...
From my reading, the native CAN pins on the bluepill boards interfere with the USB, so it's sounding like I'll go ...

I'm trying to find an example of using CAN bus, with libraries for a blue pill.. I found an instructable but they only showed the hardware setup and didn't link to any libraries.. I've looked at libraries and there's nothing that's kinda complete, I've downloaded dozens now, including the Arduino ...