NFC launch app sample crashes on nRF52840 DK

[AndyM]

Hello 

I built the  NFC record_launch_app sample from nrf\samples\nfc  but it crashes before it gets to main on my nRF52840 DK

I don't see any printk messages at all in the RTT viewer 

When  trying to debug it crashes in  cbprintf_package_convert function

I selected nrf52840dk_nrf52840 for my build configuration.

Is there anything else I need to do to make  it work on this DK?

Thank you

Andy

[AndyM]

To clarify 
I use Zephyr 2.2.0 SDK and VSCode

[AndyM]

Never mind. I replaced the USB cable and everything works now. One odd thing is that with the bad cable programming succeeded but the app did not run.

[Raoul]

Thanks for noting! I'm glad you discovered it was the cable, that's often something we forget to consider. If you're in doubt in the future, you could use nrfjprog with the --verify option to verify that the flashing was successful.

Best regards,

Raoul