S32K144 Debugging pins are disabled. How to recover the board?

[Kunal_Gettobyte]

I am using NXP S32K144 IC and while creating its demo project on S32 Design Studio via Autosar MCAL layer during the configuring of Port Driver SWD pins:

1. PTA4: JTAG SWD
2. PTA5: System Reset
3. PTA10: JTAG TDO
4. PTC5: JTAG TDI
5. PTC4: JTAG CLK

These are configured as UnusedPort pins and theri debugging fucntionality is removed.

Now when i am trying to program them via Jlink, i am getting this error:

SWD selected. Executing JTAG -> SWD switching sequence.
- Connect Under Reset
- SWD selected. Executing JTAG -> SWD switching sequence.
- Communication error while accessing MDM-AP.
- Connect Under Reset
- InitTarget() end - Took 377ms
- InitTarget() start
- SWD selected. Executing JTAG -> SWD switching sequence.
- Connect Under Reset
- SWD selected. Executing JTAG -> SWD switching sequence.
- Communication error while accessing MDM-AP.
- Connect Under Reset
- InitTarget() end - Took 374ms
- ERROR: Failed to connect.
Could not establish a connection to target.
- ERROR: Connect failed

What should i do now? Is their any way i can recover the chip? or is my chip and board damaged now?

Isnt their any other way to get it back?

Will flashing the code in it via uart using rappid bootloader, solve the problem?

[Kunal_Gettobyte]

Via this method, the chips which are brick because of CSEc peripheral of S32K144 can those also be recovered?

And in the shared link for Jlink, it says to execute halt commands. What Jlink Halt are their which needs to be executed. Can you guide us on that too.

Thanks and Regards

Kunal Gupta

[danielmartynek]

No, it cannot recover the MCUs bricked by the CSEc engine.

Refer to https://wiki.segger.com/J-Link_Commander or contact SEGGER support, J-link is not an NXP product.

Regards,

Daniel

[Kunal_Gettobyte]

So is their any way on how to recover the MCU's which are bricket by CSEc. With PeMicro and Lauterback, they will not get recover via that also?

[danielmartynek]

This is a completely different topic, it has nothing to do with the SWD/JTAG/Reset_b pins discussed in this thread.

BR, Daniel

[danielmartynek · Accepted solution]

Hi @Kunal_Gettobyte,

The pins are configured for SWD/JTAG/Reset_b after Power-on reset until they are reconfigured by the application.

The debugger will have to halt the execution in this short window.

PE Micro have Kinetis_Recovery_Utility.exe

With Lauterbach we can use:

system.CPU S32K144
wait state.power()
system.attach

Regarding J-link, this should work:

https://wiki.rdu.im/_pages/Notes/HOWTOs/howto-recover-swd-after-disabled-with-jlink.html

Regards,

Daniel