NUCLEO G431RB BOOT0 Pin and FDCAN Problem

[e-zeki]

Hi,

I've 2 Nucleo boards (Edit: Nucleo -G431RB )to communicate between FDCAN. I create a project using CUBEMX. Default FDCAN RX/TX is PA11/PA12. and I have no problem getting it work. All worked fine.

But I also need USB so I moved FDCAN Pins to PB9/PB8(BOOT0) it all collapsed. I cannot send a single frame to other end. TXFifo gets full and error occurs. (Also in loopback mode it works fine.)

I found something in documents that says nSWBOOT0 bit must be cleared, so I cleared but still no change.

Can anyone guide me here how to use propperly BOOT0 pin for FDCAN?

Best regards,

Zeki

[Uwe Bonnes]

What Nucleo are you talking about?

[e-zeki]

Sorry, I mistyped the most important part of the question. I edited it its NUCLEO -G431RB