'UNPLACED SECTIONS' issue - Segger Embedded Studio

[Jan Lundskov]

Hello,

I am trying to run a simple ble_app_hrs example from the SDK v12, but I am getting the same error as in this post devzone.nordicsemi.com/.../

Building ‘ble_app_hrs_pca10040_s132’ from solution ‘ble_app_hrs_pca10040_s132’ in configuration ‘nrf52832_xxaa’

Generating linker script ‘ble_app_hrs_pca10040_s132.ld’ Linking ble_app_hrs_pca10040_s132.elf Output/nrf52832_xxaa/Exe/ble_app_hrs_pca10040_s132.elf section .fs_data' will not fit in regionUNPLACED_SECTIONS' region UNPLACED_SECTIONS' overflowed by 16 bytes Output/ble_app_hrs_pca10040_s132 nrf52832_xxaa/Obj/fstorage.o: In functioncheck_config': undefined reference to __start_fs_data' undefined reference to__stop_fs_data' Output/ble_app_hrs_pca10040_s132 nrf52832_xxaa/Obj/fstorage.o: In function fs_init': undefined reference to__stop_fs_data' undefined reference to `__start_fs_data' Build failed

I can see that the question has been answered, but I am still not quite sure what the solution is.

1. How is the flash_placement.xml file added to the project and what is the correct content of this file?

2. The post also mentions that I need to 'import' and modify the standard thumb_crt.s file. It is already added under 'internal files', but If I try to modify the thumb_crt.s file then I get a warning, that this file can't be modified.?

If anyone could sum up exactly how to cope with this 'UNPLACED SECTIONS' issue it will be very much appreciated.

Thanks in advance.

Cheers, Jan

[Jan Lundskov]

Hi Joakim, I have added the Softdevice hex file under 'Additional Load File[0] from the following location nRF5_SDK_12.2.0_f012efa/components/softdevice/s132/hex/s132_nrf52_3.0.0_softdevice.hex. But that was already added. So the only change I have tried now is to change flash and ram settings from FLASH_START=0x1F000
SRAM_START=0x20002000

to FLASH_START=0x1F000
SRAM_START=0x20002C38

BUT it makes no difference. The LED is not blinking and the device is not visible in the HRM app.

Best regards, Jan

[Jan Lundskov]

I have now tried to erase all and program then softdevice from nRFgostdio. Then I choose Build and Debug from Segger Embedded Studio. The debugger starts in Main(). Then I Step over until I reach ble_stack_init(). When I try to step over this function nothing happens and when I then pause I end up with a Hardfault_Handler in the ses_nrf52_startup.s file. Does that give you any hint to why it is not working on my side..?

[Jan Lundskov]

Could it be my flash and ram settings. I haven't added FLASH_SIZE and SRAM_SIZE, only FLASH_START and SRAM_START. What should the sizes be..? Best regards, Jan

[Joakim Jakobsen]

Hi again Jan. I will take a look at your case and get back to you as soon as possible. I will try to see if I can reproduce what you are experiencing. Did you make any modifications at all to the example? Could you also try to flash the precompiled hex-file and see if that works? You can find it in <SDK_Installfolder>/examples/ble_peripheral/ble_app_hrs/hex/ble_app_hrs_pca10040_s132.hex.

[Jan Lundskov]

Hi Joakim, I have not made any changes to the example code. I will try the precompiled hec file tonight. Let me know what you find. Best regards, Jan