nrf52-ble-app-lbs compilation error "core_cm4.h" not found

[mashhashkarma]

Hi, i;m trying to build the "nrf52-ble-app-lbs" example which i downloaded from git hub github.com/.../nRF52-ble-app-lbs.

I followed the instructions in the README file.I'm not using any IDE. I invoked make in armgcc folder.

But i'm getting following error.

../../../../../../components/device/nrf52.h:137:130: fatal error: core_cm4.h: No such file or directory compilation terminated. make: *** [_build/app_button.o] Error 1

[mashhashkarma]

Resolved the problem by adding following in the makefile INC_PATHS += -I../../../../../../components/toolchain/CMSIS/Include

I hope this is the right way. Kindly advise if there is a more appropriate solution.

[Michael Dietz]

The structure of the SDK has changed since this example was made. The error you saw occurred because there is an #include "core_cm4.h" in nrf52.h and this was not found because the path to core_cm4.h wasn't in the INC_PATHS.

Since the CMSIS files were moved to the folder you included above it works now. It used to be the case these files were in the toolchain/gcc/ directory (an SDK or two revision ago..)

Feel free to make a pull request on GitHub if you'd like adding your fix!