TS-7670 CAN

The TS-7670 i.MX286 CPU has two FlexCAN ports that use the linux SocketCAN implementation. The ports can be set up and used with the following commands:

modprobe flexcan
ifconfig can0 up
ifconfig can1 up

In order to set the baud rate of either CAN interface, the interface must first be brought down with:

ifconfig canX down

Where "X" is interface 0 or 1. At this point, the desired baud rate can be directly entered in to the file "/sys/devices/platform/FlexCAN.X/bitrate", where X is the desired interface. For example, to set a baud rate of 750kHz on both interfaces:

echo 750000 > /sys/devices/platform/FlexCAN.0/bitrate
echo 750000 > /sys/devices/platform/FlexCAN.1/bitrate

At this point the ports can be used with standard SocketCAN libraries. In debian we provide cansend and candump to test the ports or as a simple packet send/recv tool. In order to test the two ports together, tie CAN_H of both CAN ports together, and do the same for CAN_L. Then use the following commands:

candump can0 &
cansend can1 can1 7DF#03010C
#This command will return
  can0  7DF  [3] 03 01 0C