Nrf52 DK debug = unable to find CMSIS-DAP device

[mtbeck]

I also have some debug problems with nrf52-dk and mbed, see here

Can not see any local variables while debugging (nrf52-dk, mbed)

Until now, I did not found a solution for that. I also tried exactly the same example (and other examples) with the default platformio.ini-config and the edited config (unbuild/build-flags,…) on Windows10 which shows the same behaviour. As example: [pio]

I haven’t really tried it wit CMSIS-DAP, but jlink works.

This is my current platformio.ini file

[env:nrf52_dk]
platform = nordicnrf52
framework = mbed
board = nrf52_dk
debug_tool = jlink
build_unflags = -Os
build_flags = -O1 -g3 -ggdb

With the last two lines

build_unflags = -Os
build_flags = -O1 -g3 -ggdb

I tried to solve my problem, but without success (not showing variables while debugging).