topic Re: PEMicro warning: Secure debug might be enabled on this device in S32K

PEMicro warning: Secure debug might be enabled on this device

focusdoit — Sat, 18 Apr 2026 01:53:22 GMT

I flashed FreeRTOS_Toggle_Led_Example_S32K344 to the target, flashed 1st time, everything is ok. but when I try to flash again, got the Secure debug warning. <Secure debug might be enabled on this device>.

And I recall I flashed the application created with S32DS applicaiton project many times, not got the secure warning.

Then I compared 2 linker files.

The S32DS application project has the linker as below:

The FreeRTOS_Toggle_Led_Example_S32K344 project has the linker as:

asked Copilot, it said, the linker file caused the warning.

Can differences in the linker trigger the HSE?

Re: PEMicro warning: Secure debug might be enabled on this device

davidtosenovjan — Mon, 20 Apr 2026 16:41:07 GMT

The key point is that the notice you probably see says “Secure Debug might be enabled” what rather means some issues with communication or power supply issues. Pay attention to following thread:

https://community.nxp.com/t5/S32K/S32K311-SECURE-DEBUG/m-p/2135935

Do you have different piece of debugger? I suppose you are using Universal Multilink FX?

Multilink FX requires its firmware to be up to date. Debugger probe updates itself during its connection, but this may be blocked by firewall or other IT related issues. If this is an issue, consult your IT department.

PeMicro MULTILINK-FX driver that can be downloaded here:

https://www.pemicro.com/downloads/download_file.cfm?download_id=53

Otherwise I would point out to PeMicro support:

https://www.pemicro.com/support/index.cfm

Also customer sometimes expect EVB device is powered over USB even in case it is supposed to be powered over barrel connector – even this may lead into notice about possible secure debug as debugging SW is not capable to distinguish this.

Linker file itself does not affect this, you would have to have installed HSE Firmware and intentionally use security features.

Re: PEMicro warning: Secure debug might be enabled on this device

focusdoit — Mon, 20 Apr 2026 23:40:36 GMT

I use PEMicro, investigating FS26 outputs and JTAG RST_N pin voltages.