How to burn the program in KEA8 if SWD is disabled in main.

[Jerry_xie]

Hi,

I had disable SWD，RST NMI in main function. So I can not burn the program again.

SIM->SOPT &= ~SIM_SOPT_NMIE_MASK
SIM->SOPT &= ~SIM_SOPT_SWDE_MASK
SIM->SOPT &= ~SIM_SOPT_RSTPE_MASK

Connected to ULINK plus, Keil prompts SWD communication failure.

 If the NMI pin is grounded , the program cannot be burned too.

How can I solve the problem？

Thanks.

[Robin_Shen]

Hi Jerry,

Please use the Kinetis_Recovery_Utility described in Bricking and Recovering FRDM-KL25Z Boards: Reset, SWD Clock and Low Power.

Best Regards,
Robin
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[Jerry_xie]

It seems nice.  But I only have a ulink-plus...  Is there any other solution? 

Thanks!

[ErichStyger]

To my knowledge, the ulink does not have this capability.

The easiest solution for sure would be to use the P&E probe.

Otherwise you might need to write a script for your debug probe: basically you need to reset the probe very fast in a loop and try to halt the processor, and check with the probe if the target is haltet. Not sure if the ulink has this script capability?

Erich