edit boot file

sudo nano /boot/config.txt

add this at end

dtparam=spi=on
dtoverlay=mcp2515-can1,oscillator=16000000,interrupt=25
dtoverlay=mcp2515-can0,oscillator=16000000,interrupt=23
dtoverlay=spi-bcm2835-overlay

After reboot, check its enabled and loading

dmesg | grep -i '\(can\|spi\)'

from https://www.waveshare.com/wiki/2-CH_CAN_HAT

https://github.com/kwindrem/VeCanSetup:

install package

wget -qO - https://github.com/kwindrem/SetupHelper/archive/latest.tar.gz | tar -xzf - -C /data
mv -f /data/SetupHelper-latest /data/SetupHelper
/data/SetupHelper/setup

Then, in venusOS, go into package manager and install vecan setup

/data VeCanSetup/setup

• select i to install
• select enter to NOT add USB
• confirm to not add any changes
• interface will be detected along with an offer of reboot

Go to system, Settings, Services and enable CAN 0