MCUXpresso with MIMXRT1020-EVK can't detect SWD device

[ricardot_s]

Hi,

It was everything working well, but I made a mistake, I just presssed POR button on MIMXRT1020-EVK during a firmware programing and after that I got the message:

"0 available SWD Devices detected. Connect a device and try again."

I have already updated the CMSIS-DAP firmware, but it is not the case, since it is recognized without any problem. It is the RT1020 MCU that has not answered anymore, I don't know if exist the possibility of a mcu lose its factory bootloader program...

So, I would like to know if anyone have any idea to fix that.. 

Thanks 

[gusarambula]

Hello Ricardot_s,

In this case you may want to try starting in Serial Downloader Mode by changing the Boot Mode switch (which is underneath the board for the i.MXRT1020 EVK), from this mode you may load a new image on the board using for example the MCU Boot Utility tool (available at the link below)

https://github.com/JayHeng/NXP-MCUBootUtility

The readme of this tool has instructions on how to use it, albeit is relatively user friendly.

I hope that this information helps!

Regards,
Gustavo

[ikuzmych]

Would using a different debugger probe, such as a J-link, potentially solve this?