CAN setup across two boards

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1

Hi,

I’m trying to set up can on my beaglebone black. Right now I just want to know it works by communicating via CAN across two different boards.

I was able to send and receive can over one board with vcan, but am currently unable to get can working over two boards

On each board I have run the following commands

config-pin P9_24 can config-pin P9_26 can sudo modprobe can sudo modprobe can-dev sudo modprobe can-raw sudo ip link set can0 up sudo ifconfig can0 up

This is what I get when I run

debian@beaglebone:~/Desktop/can_code$ ifconfig can0 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 169

I have set up two BBB’s by connecting two CAN transceivers as shown in the schematic:

I have tried running on board 1
`
cansend can0 5A1#01.02.03.04.05

`

and board 2
`
candump can0

`

but I am unable to get a reading on board 2.

What steps do I need to take to get can communication between my two boards?

Thank you

2

rx:
ip link set can0 type can bitrate 500000
ifconfig can0 up
candump can0

tx:
ip link set can0 type can bitrate 500000
ifconfig can0 up
cansend can0 123#DEADBEEF

3

I have run those lines of code, but candump doesn’t print anything

4 
ip link set can0 type can bitrate 500000 triple-sampling on #bitrate can be 125000 or 500000
ifconfig can0 up
cansend can0 5A1#11.22.33.44.55.66.77.88
candump can0