topic Re: Babbling Idiot Failure with Kinetis FlexCAN in Kinetis Microcontrollers

Babbling Idiot Failure with Kinetis FlexCAN

Jeinstei — Thu, 14 Jun 2012 23:39:18 GMT

I was wondering if anyone knows how the FlexCAN module deals with babbling idiots? I found a paper that talks about FlexCAN babling idiot management, but it seems as if this paper covers a custom design, different from the Freescale FlexCAN definition (http://pdf.aminer.org/000/565/008/an_analysable_bus_guardian_for_event_triggered_communication.pdf).

Is it necessary to manage babbling idiots in software, or does the FlexCAN module handle this internally?

Thanks.

Josh E

konrada — Fri, 15 Jun 2012 14:02:14 GMT

FlexCAN is not FlexCAN. There is FlexCAN the (academic?) network architecture http://en.wikipedia.org/wiki/FlexCAN

and FlexCAN the CAN controller, included in some Freescale MCUs (some have MSCAN, some FlexCAN).

AFAIK, Freescale FlexCAN is as vulnerable to babbling idiots as other CAN controllers; I've not read about any special features in that area.

Jeinstei — Mon, 18 Jun 2012 20:59:29 GMT

That's pretty much what I thought. It's good to hear someone else saying it though. Thanks!