I’m having some trouble working with a sparkfun canbus shield v1.3 and arduino uno R3.
When trying to run any code with the shield the init always fails:
Any line like
will return false.
In the seed version of the code it always prints:
“Enter Normal Mode Fail!!”
after calling CAN.begin(CAN_500KBPS)
Any help figuring this out would be appreciated!
A couple things I’m not 100% clear on but hoping someone can help me clarify:
- Should I be able to successfully init without anything connected to can hi & lo?
- Is a terminating 120ohm resistor required to be added on this version of the shield for init success? I see no mention on needing one added for this shield but several other variants seem to.