SocketCAN with PX4 v1.12.3

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Hi Vlad
I finally get it through by using socket can method, which differs from normal can driver and read/write method.
Pls check out this article:

NuttX CAN drivers on STM32H7x3

Hi Julian, I did the configuarations as you described above, but when I type “cansend can0 1122334455667788” or “candump can0” in the nsh console, nothing happens and i can’t receive or send any can messages through my USB-CAN device. Are there any mistake in my working procedure? I just don’t know how to make it work…