CAN communication stoped when FreeMASTER start

LuBiq — Tue, 16 Dec 2025 07:20:01 GMT

I'm using FreeMASTER to connect to a S32K311 board with Segger/JLink plug-in. However, when I start to communication (press Go button), my board stopped sending CAN messages, and the variable value in FreeMASTER I want to watch never changed. It seems the MCU stopped working.

My FreeMASTER configuration is as follow.

My FreeMASTER version is 3.2.6.3.

My JLink version is v8.94. And I also tried v 7.98.

My IDE, S32 Design Studio, version is V3.5.

I've tried the following solutions:

(1) Re-install FreeMASTER.

(2) Re-install JLink.

(3) Try other board with S32K342.

(4) Load JLinkARM.dll manually.

This question has been bothering me for many days. Can any body help me? Thanks a lot!

Re: CAN communication stoped when FreeMASTER start

iulian_stan — Tue, 16 Dec 2025 07:42:40 GMT

Hi @LuBiq,

Could you try the approach I described in this post ?

Re: CAN communication stoped when FreeMASTER start

LuBiq — Tue, 16 Dec 2025 08:28:42 GMT

It works! Thank you so much!

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CAN communication stoped when FreeMASTER start

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Re: CAN communication stoped when FreeMASTER start