How to add logger library into a project?

Question

Hi everyone, 
 This is my first time using Nordic nRF SDK, so i hope that I'm not asking for anything too stupid, I'm having troubles in adding nrf_logger.h into a project. I've tried to search for clues in the twi_scanner example but none of the tries have worked so far. Can anyone help me with this issue? 
 Compiling file: main.c
../../../main.c: In function 'handle_rx':
../../../main.c:47:17: error: implicit declaration of function 'NRF_LOG_INFO'; did you mean 'NRF_LOG_INIT'? [-Werror=implicit-function-declaration]
 NRF_LOG_INFO("%s",NRF_LOG_PUSH(string));
 ^~~~~~~~~~~~
 NRF_LOG_INIT
../../../main.c:47:35: error: implicit declaration of function 'NRF_LOG_PUSH'; did you mean 'NRF_LOG_FLUSH'? [-Werror=implicit-function-declaration]
 NRF_LOG_INFO("%s",NRF_LOG_PUSH(string));
 ^~~~~~~~~~~~
 NRF_LOG_FLUSH
cc1: all warnings being treated as errors
make: *** [../../../../../../components/toolchain/gcc/Makefile.common:272: _build/nrf52840_xxaa/main.c.o] Error 1

Vidar Berg · Accepted Answer

Hi, 
 It can a bit of work to add the logger module to a new project because it has quite a few dependencies. I did myself for the blinky example in this thread link . My recommendation would be to rather start with an existing example that already has the module integrated (all BLE examples do). 
 Anyway, the usual logger dependencies are: 
 components/libraries/log/src/nrf_log_backend_rtt.c components/libraries/log/src/nrf_log_backend_serial.c components/libraries/log/src/nrf_log_backend_uart.c components/libraries/log/src/nrf_log_default_backends.c components/libraries/log/src/nrf_log_frontend.c components/libraries/log/src/nrf_log_str_formatter.c external/segger_rtt/SEGGER_RTT.c external/segger_rtt/SEGGER_RTT_Syscalls_SES.c external/segger_rtt/SEGGER_RTT_printf.c 
 And you need to make sure your sdk_config.h file contain relevenant configuration settings for the logger. Use other examples as a reference.

How to add logger library into a project?

Top Replies