NRF52840 DK "long range" test problem when building.

[carlosjs]

Hi! Please, excuse the probably stupid question but I'm a real newbie. I'm trying to perform a long range coverage test. I got two NRF52840 DK. Got to install both Segger and SDK and all other demos would  run with no problems. But I tried to run the "nRF52-ble-long-range-demo" from GitHub and: first tried to dump the "hex" files but no result...no terminal debug output and no RTT...then I tried to debug and run the solution from segger but I got these errors:

Building ‘central_long_range_demo_pca10056_s140’ from solution ‘central_long_range_demo_pca10056_s140’ in configuration ‘Debug’
1> Compiling ‘nrf_log_backend_serial.c’
2> Compiling ‘nrf_log_backend_rtt.c’
3> Compiling ‘nrf_log_backend_uart.c’
4> Compiling ‘nrf_log_default_backends.c’
1> cc1: fatal error: C:\Nordic\components\libraries\experimental_log\src\nrf_log_backend_serial.c: No such file or directory
1> compilation terminated.
2> cc1: fatal error: C:\Nordic\components\libraries\experimental_log\src\nrf_log_backend_rtt.c: No such file or directory
2> compilation terminated.
3> cc1: fatal error: C:\Nordic\components\libraries\experimental_log\src\nrf_log_backend_uart.c: No such file or directory
3> compilation terminated.
4> cc1: fatal error: C:\Nordic\components\libraries\experimental_log\src\nrf_log_default_backends.c: No such file or directory
4> compilation terminated.
Build failed

Any hint would be greatly appreciated.
Carlos

[jacky4566]

To make it easy you need to compile those examples under the same SDK as they were created. 

The problem is those target files. nrf_log_backend_serial.. are not located in that directory anymore. Most of them are located here:

..\components\libraries\log\src

And so you need to redirect the compiler.

I do also wish there was a long range example under the 15.3 SDK.

[carlosjs]

Hi Jacky4566.  Thanks por your help. So you mean that replacing the installed SDK 15.3.. for the 15.0 should do the trick ?

[carlosjs]

I'm replying to myself.. I changed to SDK 15.0 AND solutions should be in the "experimental" folder instead of the ": ..\nRF5_SDK_15.0.0_a53641a\examples\ble_central_and_peripheral\" as stated in the GitHub. Doing so, both versions (peripheral and central) compile and work correctly. 

Thanks to all of you!

[Andreas48752]

HI!

I just tried your solution. Central is compiling now. but with peripheral I get following errors:

ebuilding ‘peripheral_long_range_demo_pca10056_s140’ from solution ‘peripheral_long_range_demo_pca10056_s140’ in configuration ‘Debug’
1> Assembling ‘thumb_crt0.s’
2> Compiling ‘nrf_log_backend_rtt.c’
3> Compiling ‘nrf_log_backend_serial.c’
4> Compiling ‘nrf_log_backend_uart.c’
5> Compiling ‘nrf_log_default_backends.c’
6> Compiling ‘nrf_log_frontend.c’
7> Compiling ‘nrf_log_str_formatter.c’
8> Compiling ‘app_button.c’
5> cc1: fatal error: can't open 'D:/Entwicklung/nRF5/nRF5_SDK_15.0.0_a53641a/nRF5_SDK_15.0.0_a53641a/examples/ble_central_and_peripheral/experimental/peripheral_long_range_demo_kit/pca10056/s140/ses/Output/peripheral_long_range_demo_pca10056_s140 Debug/Obj/nrf_log_default_backends.asm' for writing: No such file or directory
5> compilation terminated.
2> In file included from D:\Entwicklung\nRF5\nRF5_SDK_15.0.0_a53641a\nRF5_SDK_15.0.0_a53641a\components\libraries\experimental_log\src\nrf_log_backend_rtt.c:42:0:
2> ../../../../../../../components/libraries/experimental_log/nrf_log_backend_rtt.h:52:10: fatal error: nrf_log_backend_interface.h: No such file or directory
2> compilation terminated.
3> In file included from D:\Entwicklung\nRF5\nRF5_SDK_15.0.0_a53641a\nRF5_SDK_15.0.0_a53641a\components\libraries\experimental_log\src\nrf_log_backend_serial.c:42:0:
3> D:\Entwicklung\nRF5\nRF5_SDK_15.0.0_a53641a\nRF5_SDK_15.0.0_a53641a\components\libraries\experimental_log\src\nrf_log_backend_serial.h:53:10: fatal error: nrf_log_backend_interface.h: No such file or directory
3> compilation terminated.
4> In file included from D:\Entwicklung\nRF5\nRF5_SDK_15.0.0_a53641a\nRF5_SDK_15.0.0_a53641a\components\libraries\experimental_log\src\nrf_log_backend_uart.c:42:0:
4> ../../../../../../../components/libraries/experimental_log/nrf_log_backend_uart.h:52:10: fatal error: nrf_log_backend_interface.h: No such file or directory
4> compilation terminated.
7> In file included from ../../../../../../../components/libraries/experimental_log/nrf_log_str_formatter.h:53:0,
7> from D:\Entwicklung\nRF5\nRF5_SDK_15.0.0_a53641a\nRF5_SDK_15.0.0_a53641a\components\libraries\experimental_log\src\nrf_log_str_formatter.c:42:
7> ../../../../../../../components/libraries/experimental_log/nrf_log_ctrl.h:58:10: fatal error: nrf_log_ctrl_internal.h: No such file or directory
7> compilation terminated.
6> In file included from D:\Entwicklung\nRF5\nRF5_SDK_15.0.0_a53641a\nRF5_SDK_15.0.0_a53641a\components\libraries\experimental_log\src\nrf_log_frontend.c:46:0:
6> ../../../../../../../components/libraries/experimental_log/nrf_log_ctrl.h:58:10: fatal error: nrf_log_ctrl_internal.h: No such file or directory
6> compilation terminated.
Build failed

What do I have to change?

[ovrebekk]

Hi

Windows doesn't like very deep folder trees, and I think that might be the issue in your case.

Rather than putting the SDK inside D:/Entwicklung/nRF5/nRF5_SDK_15.0.0_a53641a/nRF5_SDK_15.0.0_a53641a/, could you try moving it further up in the tree so that it can be found under D:/Entwicklung/nRF5_SDK_15.0.0_a53641a/ only?

Best regards
Torbjørn

[manikandan]

where can i find the experimental folder ??i getting the same error as above

[ovrebekk]

Hi 

The experimental_log folder can be found here:
\nRF5_SDK_15.0.0_a53641a\components\libraries\experimental_log

Are you sure you are using this SDK version?

In later SDK versions the log libraries are no longer considered experimental, and the name of the folder is changed. 

Best regards
Torbjørn