How to configure and use CAN bus
From RidgeRun Developer Connection
(→Setup the networking rules)
m (moved Enabling CAN Bus to How to configure and use CAN bus: Added more information beyond just enabling CAN bus.)
Revision as of 04:36, 20 December 2010
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.
This packages are available from the RidgeRun SDK in the configuration menu.
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):
auto can0 iface can0 inet manual #pre-up ip link set $IFACE type can bitrate 125000 listen-only off pre-up /ip link set $IFACE type can bitrate 125000 triple-sampling on up /sbin/ifconfig $IFACE up down /sbin/ifconfig $IFACE down