Incorrectly configuring PTA0 bricked unit

[ignisuti_]

MCU: KW41z

During development, I've managed to incorrectly/accidentally configure PTA0 with zero values. This appears to have bricked my unit in such a way that I can no longer download code. Note: The code that is currently on there appears to continue to run.

It appears that PTA0 is used by the SWD and my incorrect configuration has this being configured as a Touch Select Input (TSI).

I have not been able to hold the MCU in reset and recover. What other methods should I try to once again debug the unit?

[ignisuti_]

That un-bricked the boards. Thanks!

[Robin_Shen · Accepted solution]

Hi Joseph,

Please refer the method described in 'Bricking and Recovering FRDM-KL25Z Boards: Reset, SWD Clock and Low Power'.

I have attached the 'P&E Recovery Utility' that you may need to download.

Best Regards,

Robin

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