Model-Based Design Toolbox (MBDT)中的主题 Unable to see input coming to CAN in FREEMASTER

Unable to see input coming to CAN in FREEMASTER

arjunarn — Mon, 19 Feb 2024 05:39:25 GMT

Hi Team,

I have implemented MBDT system to receive CAN signals from an external IVT sensor and read the signal using NXPS32K144 board and observe the same in Freemaster. But all the variables show zero in it. Please check the model i have uploaded and suggest for any corrections or settings change to be made.

Re: Unable to see input coming to CAN in FREEMASTER

SorinIBancila — Wed, 28 Feb 2024 12:11:54 GMT

Hello,

At the first glance, the model seems to be ok. Can you please add another variable (apart from the ones used by the CAN blocks) to check if the model is properly running (like a variable incremented at every execution step)?

Below are a few suggestions that might solve your problem:

Make sure the latest .elf file is selected in FreeMaster settings.

Check if the variable address is valid (blue rectangle) and make sure the refresh time is not set on "Once" (red rectangle).

Best regards,

Sorin Bancila

Re: Unable to see input coming to CAN in FREEMASTER

arjunarn — Thu, 29 Feb 2024 05:49:05 GMT

The freemaster is showing the output as in the figure. All the data field is zero.

Re: Unable to see input coming to CAN in FREEMASTER

SorinIBancila — Thu, 29 Feb 2024 09:22:16 GMT

Hello @arjunarn,

One possible problem with your model (I didn't see it at first) might be the fact that you configure the FCAN Receive buffer at every step.
You can consult 'flexcan_s32k14x' example to see how you can initiaze the fcan receive only at the startup of the application.

My suggestion is to start from an existing example model (make sure you copy paste it before so you can always have the original one available) and modify it to work accordingly to your requirements.

Best regards,
Sorin Bancila

Re: Unable to see input coming to CAN in FREEMASTER

arjunarn — Fri, 01 Mar 2024 05:46:39 GMT

Hi SorinlBancila,

Thank you for your response, i will try the same what you have mentioned.