Controller area network (CAN)

Note This section contains Linux BSP documentation for kernel v4.1. Click here for v4.9 BSP documentation.

The NXP i.MX6UL CPU has two FLEXCAN controllers which operate at up to 1Mbps. FlexCAN is a communications controller implementing the CAN protocol according to the CAN 2.0B protocol specification. It supports both standard and extended message frames, and the maximum message buffer is 64. The driver is a network device driver of PF_CAN protocol family.

You can access the CAN1 port through the expansion connector on the ConnectCore 6UL SBC Express.

On the ConnectCore 6UL SBC Pro:

CAN1 port lines are multiplexed with UART3 CTS/RTS.
CAN2 port lines are multiplexed with UART2 CTS/RTS.
Both CAN ports are accessible through a connector.

Kernel configuration	CONFIG_CAN CONFIG_CAN_FLEXCAN
Kernel driver	drivers/net/can/flexcan.c
Device tree binding	Documentation/devicetree/bindings/net/can/fsl-flexcan.txt