topic Re: Monitoring CAN messages at the input in Model-Based Design Toolbox (MBDT)

Monitoring CAN messages at the input

juliana_rojas30 — Fri, 28 Aug 2020 09:43:55 GMT

Hello there!

I am working with a S32k board and I want to monitor the number of CAN messages I am receiving at the input of my communication system. It doesn't matter if it only gives me the number of messages or the ID of the CAN messages I am receiving. How can I do this? I was trying to implement a counter but no success. Any ideas ?

Also, I would like to know how to do it from the S32DS, I am guessing it can be done from there.

Besides that, I am having trouble finding the project for importing it into the DS, I am not finding it anywhere so I asumme I am not exporting it correctly.. which is the extension it is supposed to have?

Thanks in advance!

Juliana

Re: Monitoring CAN messages at the input

mariuslucianand — Fri, 28 Aug 2020 16:05:51 GMT

Hello juliana.rojas3062@ctag.com‌,

Do you receive any of the messages over CAN?

For the importing issue, the model generates in the Matlabs current directory, a folder with the same name as the model, ended in _mbd_rtw. In that folder, you should be able to find the ProjectInfo.xml file that helps you importing the generated code in the S32DS code.

Hope this helps,

Marius

Re: Monitoring CAN messages at the input

juliana_rojas30 — Tue, 01 Sep 2020 05:28:16 GMT

Hi @mariuslucianand,

Thank you very much for your reply. Yes, I do receive CAN. Let me explain, I am receiving a lot of CAN messages at a high speed. So the problem is that when I echo them back, there are a lot of lost messages. Now, I don't know why, and that's what I am trying to figure out. First I am trying to be sure that the messages arrive to the board, so that's why I am trying to make a counter. I guess it's easier to get this data from the Design Studio, but I am having issues with it.

Regarding the S32DS, yes, that worked. Now when I try to build the code I get this:

Any idea what can that be about?

Thanks!

Re: Monitoring CAN messages at the input

juliana_rojas30 — Wed, 02 Sep 2020 05:30:44 GMT

Hi again @mariuslucianand ,

Updating this, I was able to count the messages arriving to the board by implementing a custom made counter. Now, as I am sure they don't get lost there, I am trying to understand how MB work in order to manipulate them for the transmission process, maybe this can help me improve the percentage of echoed messages. Can you give me a explanation of how the MB work? As I understand I can use the MB4-Mb15 am I wrong? I read the manual but it doesn't any clearer for me tbh.

Thank you!

Re: Monitoring CAN messages at the input

juliana_rojas30 — Wed, 02 Sep 2020 06:06:43 GMT

I forgot to add, now, the issue is this: I solved the problem with the transmission of messages. But, now I see a lot of more messages in the echo channel than in the original one. I checked the log and apparently, some of the 2B messages are being echoed twice (I guess that because of their size the code is expecting a bigger one so it just sends two of them). How can this be solved?

Thank you!

Re: Monitoring CAN messages at the input

Lawrence485 — Wed, 11 May 2022 06:17:00 GMT

check this out : https://community.nxp.com/t5/Model-Based-Design-Toolbox-MBDT/Monitoring-CAN-messages-at-the-input/m-p/1075791#M4673

Re: Monitoring CAN messages at the input

Louis21Chamberlain — Thu, 30 Mar 2023 11:54:59 GMT

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Re: Monitoring CAN messages at the input

Perkiden34 — Thu, 15 Jun 2023 05:11:12 GMT

As i know the CAN bus analyzer is connected to the CAN bus network using appropriate hardware interfaces, such as a CAN interface module or a USB-to-CAN adapter. Once connected, the analyzer captures and interprets the CAN messages being transmitted on the bus.

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