2-Channel CAN-BUS(FD) Shield for RPi3B+ Setup / Installation Guide Update?

I just recently purchased the 2-Channel CAN-BUS(FD) Shield for Raspberry Pi. I think this is awesome that it can not only understand FD, but also CAN2.

1. Is there an updated installation program / setup guide for this product? The current one doesn’t seem to jive well with the current Raspian level.
   
2. Is there a functionality test where both channels can be bridged to send and receive test messages instead of needing an additional arduino unit?
   
   
   
   Any help would be appreciated.
   
   Thank you in advance.

I am also looking for some installation instructions that will work for the RPi4. You should be able to connect the two and use cangen on one and candump on the other.

I had to run: “make” and “make install” then “sudo modprobe mcp25xxfd-can”



I now have it working after 2 days of pain and suffering.