topic Error Passive State in bus for CAN communication in MPC5643L in Model-Based Design Toolbox (MBDT)

Error Passive State in bus for CAN communication in MPC5643L

anu_mathew — Thu, 11 Jul 2019 02:06:50 GMT

Hi,

I am facing issue with CAN transmission. I am using can_simple_block Simulink example for creating the communication. I am using XPC56XL_257BGA module with XPC56XX EVB. I am connecting DB1 connector to PCAN USB Interface. But I am always getting Error Passive State. I am unable to trouleshoot the error. I have rechecked the jumper settings. Could anyone please help me in resolving the issue.

Also how to set the baud rate of CAN module?

Re: Error Passive State in bus for CAN communication in MPC5643L

constantinrazva — Wed, 24 Jul 2019 07:56:35 GMT

Hello anu.mathew@ntu.edu.sg‌,

Sorry for the delayed answer - we were in the midst of the latest S32K1xx release. Is this still an issue? Or have you resolved it in the meanwhile?

Kind regards,

Razvan.

Re: Error Passive State in bus for CAN communication in MPC5643L

constantinrazva — Wed, 24 Jul 2019 08:14:34 GMT

As for setting the baud rate, in this older toolbox you have to manually set the following parameters:

Resync jump width
Phase segment 1
Phase segment 2
Propagation segment

Using these and knowing the frequency of the clock, you can calculate the baud rate. Please refer to the MPC5643L reference manual to get more in-depth information about how to calculate for this specific MCU (CAN transceiver actually).

Kind regards,

Razvan.

Re: Error Passive State in bus for CAN communication in MPC5643L

anu_mathew — Tue, 06 Aug 2019 03:13:40 GMT

Hi,

Thanks for the response. I have resolved the issue, by setting the baud rate correctly.