...section '.log_backends' will not fit in region ‘UNPLACED_SECTIONS’. (with flash_placement.xml)

RE: ...section '.log_backends' will not fit in region ‘UNPLACED_SECTIONS’. (with flash_placement.xml)

Hung Bui — Tue, 05 Jul 2022 15:20:53 GMT

Hi Yao Jiao,

Have you followed what's inside flash_placement.xml in ble_app_hrs ?
Please copy any configuration with "log" in the name.
Please add a breakpoint inside nrf_log_init() in nrf_log_frontend.c and try to debug.

RE: ...section '.log_backends' will not fit in region ‘UNPLACED_SECTIONS’. (with flash_placement.xml)

Joyop — Tue, 05 Jul 2022 12:07:55 GMT

Hi Hung Bui,

Thank you, it works!

However, when I call NRF_LOG_INIT(NULL) in main, the program crashed without any log. (I added blinky after NRF_LOG_INIT(NULL) and the LED blink didn't appear. So I judged that the program had crashed.)

May I ask what may be the cause? Is there any tutorials about adding RTT log to SES project?

Best wishes,

Joyop

RE: ...section '.log_backends' will not fit in region ‘UNPLACED_SECTIONS’. (with flash_placement.xml)

Hung Bui — Mon, 04 Jul 2022 15:16:56 GMT

Hi Yao Jiao,
I believe you need to add the section for the log backend into flash_placement.xml.
Something like this:

Please refer to the flash_placement.xml in one of our example in the SDK for example ble_app_hrs.