compiler ERROR UART code

[PIRHeisenberg]

Hi, i have been working on initializing the UART periferial based on the UART example in the SDK5. I got following error.

1> error: unplaced section: .log_dynamic_data_balloc_log_mempool [nrf_log_frontend.o], size=4, align=2
1> error: unplaced section: .log_const_data_app [nrf_log_frontend.o], size=8, align=4
1> error: unplaced section: .nrf_balloc [nrf_log_frontend.o], size=28, align=4
1> error: unplaced section: .log_dynamic_data_app [nrf_log_frontend.o], size=4, align=2
1> error: undefined symbol: __start_log_const_data
1> error: undefined symbol: __start_log_filter_data

I know that i probably missed a header file or something simular but i was not able to find out which.

Please help

[Einar Thorsrud]

Hi,

It looks like you are missing definitions for some sections used by the logger library in the linker configuration. If you are using SES(?) you can refer to flash_placement.xml of one of the examples that use logging. There you will see for instance this line:

    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".nrf_balloc" inputsections="*(.nrf_balloc*)" address_symbol="__start_nrf_balloc" end_symbol="__stop_nrf_balloc" />

And similar for log_const_data etc. You need to add these configurations to your project.

[PIRHeisenberg]

Hi again. Yes I am using SES, and yes you are right, those lines are missing. How can i configure the Flashplacement.xml file? Do I have to copy the code or is there a configuration tool?

[Einar Thorsrud]

There is no configuration tool for the flash_placement.xml file, you need to edit it manually. (It may also be an option to just use one from a suitable example project.)

[PIRHeisenberg]

I am probably going to add some different components to my project on the way. So if I run into this problem again, i'm suposed to add the flash_placement files of an different exempel on the way?

[PIRHeisenberg]

I added the Lines of code, but the error messages won't disappear