topic Re: FRDM-K64F Debug in Kinetis Microcontrollers

FRDM-K64F Debug

LArmstrong1985 — Mon, 12 Jun 2017 13:11:38 GMT

Hi, I bought a new FRDM-K64F board, but I've same problems with OpenSDAv2 Debug.

The default bootloader installed is MBED but it has several connection problems and often crashes

whit the following error:

"crt_emu_cm_redlink has stopped working mcuxpresso "

I tried to replace it with Segger Jlinker OpenSDA Firmware, that I think is better, but when I put the

bin in the virtual folder it return this error in the log (fails.txt):

RESERVED BITS

How I can resolve this problems and works properly with this board?

Thank you very much!

Re: FRDM-K64F Debug

mjbcswitzerland — Mon, 12 Jun 2017 15:58:14 GMT

Continue using the Segger OpenSDA since it is basically good.

Probably the error is because you are loading code with Flash configuration values (in 0x400..0x40f range) which have values that it doesn't like. For example, the values may cause the chips to disable its debug interface and become secured, which the loader will try to protect against.

Try loading some binary file from here
http://www.utasker.com/kinetis/FRDM-K64F.html
because these will have good values and so identify whether it is due to the *.bin that you are trying to load or not.

Regards

Mark