CAN configuration STKa8Xx

DIP switch SW1 and SW2 are used to configure the CAN interfaces CAN1 and CAN2.

List available CAN Interfaces

root@MBaXXX:~ ip link show

output:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: can0: <NOARP,ECHO> mtu 16 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 10
    link/can
3: can1: <NOARP,ECHO> mtu 16 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 10
    link/can

Activate CAN Interface

root@MBaXXX:~ ip link set can0 up
root@MBaXXX:~ ip link set can1 up

Change Default CAN Bitrate

root@MBaXXX:~ ip link set can0 down
root@MBaXXX:~ ip link set can1 down
root@MBaXXX:~ ip link set can0 type can bitrate <baudrate>
root@MBaXXX:~ ip link set can1 type can bitrate <baudrate>

Loopback Test CAN Interface

• Connect wires to the provided PHOENIX connectors from the Starterkit as shown below.
  

• Following command examples shows how to test the CAN interface

root@MBaXXX:~ ip link set can0 down
root@MBaXXX:~ ip link set can1 down

root@MBaXXX:~ ip link set can0 type can bitrate 500000
root@MBaXXX:~ ip link set can1 type can bitrate 500000

root@MBaXXX:~ ip link set can0 up
root@MBaXXX:~ ip link set can1 up

root@MBaXXX:~ candump can1&
root@MBaXXX:~ cansend can0 5A1#11.2233.44556677.88

output:
root@tqma8xqp-mba8xx:~#   can1  5A1   [8]  11 22 33 44 55 66 77 88

root@MBaXXX:~ killall candump
root@MBaXXX:~ candump can0&
root@MBaXXX:~ cansend can1 5A1#11.2233.44556677.88

output:
root@tqma8xqp-mba8xx:~#   can0  5A1   [8]  11 22 33 44 55 66 77 88