AXIOMTEK SCM186 User Manual page 40

SCM186 NXP i.MX 8M Plus ARM-based Evaluation Kit
3.5.1.9 CAN
Herodotus supports the 2 CAN connectors. This section explains how to execute and test
CAN modules.
CAN2 CAN1
Note:
i. can0 is mapping to CAN1, can1 is mapping to CAN2 on board.
ii. Executing CAN receive command in receiver side before transmitting the data.
⚫ Connect the Herodotus platform CAN port to another Herodotus CAN port (it may be
either CAN1 or CAN2 port).
⚫ Set the bitrate and enable the CAN device, execute the below command.
sh-5.1# ip link set <CAN_DEVICE> up type can bitrate <bitrate>
The bitrate supports up to 1000000.
⚫
To ensure the CAN network status, please execute the below command.
sh-5.1# ifconfig
can0: flags=193<UP,RUNNING,NOARP> mtu 16
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 10 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 38
can1: flags=193<UP,RUNNING,NOARP> mtu 16
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 10 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
⚫ To receive the data and display in console, execute the below command.
sh-5.1# candump <candev_no> &
candev_no 123 [4] AA BB CC DD
⚫ To transmit the data, execute the below command.
sh-5.1# cansend <candev_no> 123#AABBCCDD
⚫ To disable the CAN modules, execute the below command.
Sh-5.1# ifconfig <candev_no> down
34
device interrupt 39
Herodotus BSP User Guide