CAN filtering

[turboscrew]

How does one define the filter for a CAN A message, when the ID is only 11 bits?

If using 16-bit filter, what should be put to the EXTID[17:15]?

[Tesla DeLorean]

Match = (ID << 5)

Mask = 0x7FF << 5;

Let me go find the diagram, I've posted it a bunch of times to older iteration of the forum...

[Tesla DeLorean]

For the identifier list expect you're going to have to exactly match the bit patterns you've enumerated.

[turboscrew]

Just that CAN A does not have EXTID. CAN A ID is only 11 bits.

What do the EXTID-bits match to?

Or maybe one needs to use masking with CAN A?

[Tesla DeLorean · Accepted solution]

>>What do the EXTID-bits match to?

Whatever you have on the wire, it is a one-to-one deal, not magic. If it's random crap you're going to need to mask it...

[turboscrew]

As I thought. Thanks for confirmation.