topic Re: S32K 3.4ver CAN_Node in S32K

S32K 3.4ver CAN_Node

mumumilmil — Thu, 18 Apr 2024 00:55:48 GMT

I wondered that

if erased CAN Source, Errors not occured.

but if add CAN Source, paralyzed all CAN_Node associated to CAN_BUS.

If our CAN node can influenced on CAN_BUS without TX ??
(our CAN source code has only RX)

On the other side, ARM CAN source doesn't occur error.

Re: S32K 3.4ver CAN_Node

mumumilmil — Thu, 18 Apr 2024 01:01:26 GMT

I have been analyzing our 3.4ver source code..

To find solution, please give me your opinion

Re: S32K 3.4ver CAN_Node

PetrS — Thu, 18 Apr 2024 06:28:22 GMT

Hi,

would be great to know how such paralyze looks like. Ideally check for errors detected on nodes and measure your node TXD/RXD and CAN signals.
Even if node is not transmitting a message it receives frames and ACKs it back and in case of any error detected it sends error frame.
If you need not TX on node you can try to use LOM (Listen Only Mode).

BR, Petr

Re: S32K 3.4ver CAN_Node

mumumilmil — Thu, 18 Apr 2024 08:17:19 GMT

Are you saying that I can receive it as an RX signal and reply the error frame without sending the TX signal from NODE?

and Does the error frame sent over the ACK signal also cause errors on other nodes of CAN_BUS?

Re: S32K 3.4ver CAN_Node

PetrS — Fri, 19 Apr 2024 11:08:22 GMT

Hi,

FlexCAN module behaves as per CAN standard so you can refer to it for info about error handling.

BR, Petr