MCUXpresso debug fails (Kinetis K64F, Segger JLink)

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MCUXpresso debug fails (Kinetis K64F, Segger JLink)

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davenadler
Senior Contributor I

Just upgraded to NXP MCUXpresso 11.1
No problems using JLINK with earlier MCUXpresso version.
Target is Kinetis K64F (Freedom board).
JFlash lite can see, erase, and program the device, so connections etc.. would seem to be AOK.

When I try to debug, a message flashes by saying The selected device -IF is unknown to this selection

Image of message attached and here: nadler.com/backups/JLINK_unknown_message.PNG

Any idea what's going wrong???
Thanks for any help!
Best Regards, Dave

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davenadler
Senior Contributor I
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davenadler
Senior Contributor I
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