Debugging an i.MX8MPlus Cortex-M7 core on the EVK.

[aheck]

Hello all,

I am working on setting up my development and debugging environment for the Cortex-M7 core of the i.MX 8M Plus.  I have successfully generated an SDK using the online NXP SDK builder tool, and I am able to open and build the FreeRTOS hello world example using the NXP MCUXpresso VSCode plugin.  However, I have not been able to flash or debug the i.MX 8M Plus on my EVK.

I was able to use J-Link Commander with a rev 1.2 J-Link Ultra to confirm SWD communication was working, but I was unable to flash or debug, as Segger does not support debugging Cortex-M7 cores with this hardware revision.  I have since ordered an NXP MCU-Link Pro debugger, but I am having issues getting debugging going with that as well.

Should the NXP MCU-Link Pro be able to debug the Cortex-M7 core of an i.MX 8M Plus?

If not, what debugging probes are known to support JTAG or SWD debugging the Cortex-m7 core of an i.MX 8M Plus?

[JosephAtNXP · Accepted solution]

Hi,

Thank you for your interest in NXP Semiconductor products,

I have a reference of a j-link plus working, do you have one handy to test it?

Could you please follow the guide attached and pass the record with pro and possibly with plus?

Notice that also in this post is stated that it's worked with plus.

Regards

[aheck]

I ordered a J-Trace Cortex and was able to debug successfully. I also had to follow section 4 of the AN14120 .pdf you linked above to debug without reset.