S32KのトピックRe: S32K344: Failed toconnect

S32K344: Failed toconnect

YuZheng1 — Wed, 23 Apr 2025 01:32:20 GMT

JFlash.png

#I2c_Example_S32K344_Q172

After I use the SDK of I2c_Example_S32K344_Q172 and S32DS to configure and burn the development board, I can read and write the EEPROM of the development board normally.

However, after I use the same example, use mcal to configure I2c, compile and burn the development board and run it. It is no longer possible to connect to the S32K344 chip using J-Link.

J-Flash reports an error. See the attachment.

Can you help me analyze the possible reasons for this problem?

Re: S32K344: Failed toconnect

VaneB — Wed, 23 Apr 2025 22:32:39 GMT

Hi @YuZheng1

Did you make any changes to the example code? If so, could you please share the changes you made so that I can test it on my end?

Additionally, could you try loading a simple example code, such as toggling a pin, to see if the problem persists? If possible, could you also try using another debugger to see if the issue is specific to the J-Link?

BR, VaneB

Re: S32K344: Failed toconnect

YuZheng1 — Sun, 27 Apr 2025 08:59:25 GMT

Hello,

The attachment is the project I modified. The screenshot is the schematic diagram of the I2C connection to the EEPROM.

This issue has nothing to do with Jlink. I've made several attempts.

Also, I'd like to ask if there are any commands in the Jlink commander tool for unlocking the S32K3XX chip. I want to try if I can reconnect to the core.

YuZheng1_0-1745744228695.png

YuZheng1_1-1745744293854.png

Re: S32K344: Failed toconnect

VaneB — Tue, 29 Apr 2025 20:20:41 GMT

Hi @YuZheng1

I just have a question. In your main question, you mentioned that you were working on S32DS, but the project you shared is an EB tresos project. Is it the correct project?

Also, did you try loading a simple example code, such as toggling a pin, to see if the problem persists?

Re: S32K344: Failed toconnect

YuZheng1 — Tue, 06 May 2025 05:55:41 GMT

Yes, there was no such problem when I started using the example project of S32DS.

After I compiled and programmed with my EB project, the J-Link could no longer be connected.

Re: S32K344: Failed toconnect

VaneB — Tue, 06 May 2025 18:10:45 GMT

Hi @YuZheng1

When you said, "no such problem when I started using the example project of S32DS," do you mean the I2c_Example_S32K344_Q172 project without any modifications? Or does it have the same modifications? Knowing this will help us figure out if the issue is related to changes made to the project.

Re: S32K344: Failed toconnect

YuZheng1 — Wed, 07 May 2025 02:16:41 GMT

The same modification was also made. In fact, only the corresponding pin was modified.

Re: S32K344: Failed toconnect

VaneB — Wed, 07 May 2025 20:14:07 GMT

Hi @YuZheng1

Could you please point me to the specific changes you are referring to?