How to configure and use CAN bus
This article explains how to enable the CAN bus using as example the Category:AM35x AM35x EVM, but can be applied to other platforms as well.
Build the SDK with socketcan and ip tools
Working with the CAN buys requires enabling the 'ip' tools from iputils2 package (the 'ip' tool from busybox won't work). The socketcan package is optional and provide you with tools to debug your can bus.
Enable the kernel driver
In the case of the Category:AM35x platform the configuration is:
Linux Kernel Configuration
Networking support
CAN bus subsystem support
CAN device drivers
Platform CAN drivers with Netlink support
CAN bit-timing calculation
TI High End CAN controller (HECC)
Setup the networking rules
Edit your /etc/networking/interfaces on the target filesystem and add the following rules (required to setup the bit-rate of the bus: