link error for a first demo project

[taul]

when I build a demo project， got  those errors， how to fix them？

.\Objects\ble_app_templete_s132.axf: Error: L6218E: Undefined symbol __start_log_const_data (referred from main.o).
.\Objects\ble_app_templete_s132.axf: Error: L6218E: Undefined symbol __start_pwr_mgmt_data (referred from nrf_pwr_mgmt.o).
.\Objects\ble_app_templete_s132.axf: Error: L6218E: Undefined symbol __stop_pwr_mgmt_data (referred from nrf_pwr_mgmt.o).
.\Objects\ble_app_templete_s132.axf: Error: L6218E: Undefined symbol __start_log_dynamic_data (referred from nrf_log_frontend.o).
.\Objects\ble_app_templete_s132.axf: Error: L6218E: Undefined symbol __stop_log_const_data (referred from nrf_log_frontend.o).
.\Objects\ble_app_templete_s132.axf: Error: L6218E: Undefined symbol __start_sdh_req_observers (referred from nrf_sdh.o).
.\Objects\ble_app_templete_s132.axf: Error: L6218E: Undefined symbol __start_sdh_stack_observers (referred from nrf_sdh.o).
.\Objects\ble_app_templete_s132.axf: Error: L6218E: Undefined symbol __start_sdh_state_observers (referred from nrf_sdh.o).
.\Objects\ble_app_templete_s132.axf: Error: L6218E: Undefined symbol __stop_sdh_req_observers (referred from nrf_sdh.o).
.\Objects\ble_app_templete_s132.axf: Error: L6218E: Undefined symbol __stop_sdh_stack_observers (referred from nrf_sdh.o).
.\Objects\ble_app_templete_s132.axf: Error: L6218E: Undefined symbol __stop_sdh_state_observers (referred from nrf_sdh.o).

note： the demo project is not from official demo but one from other company guide。

SDK:  nRF5SDK17009d13099

uVision： 5.31.0.0， CMSIS: 5.7,0   DeviceFamilyPack ： 8.32.1

[taul]

I found an example that says this issue occurs because of linker script issue. Is that true ? How can I edit script file to fix this issue?

[Vidar Berg]

The linker script is, or at least should be, auto-generated by uvision. Seems more likely to me that it may be related to the issue discussed in the most recent issue Hellesvik linked to above.

Please open the nrf_section.h header in your project explorer and check if the blocks enclosed by __CC_ARM appear greyed out or not.

[taul]

yes， this is my project as enclosed。 you can take look at it8284.ble_app_templete.rar

[Vidar Berg]

I got multiple unrelated build errors when I tried to build your project here. The project was configured for a generic M4 device, and was also using the ARM clang compiler which is not supported by our examples.

Please try this project and see if you can make it work:

ble_app_templete.zip

[taul]

Dear Vidar：

this code can be built but got a issue when linking：

.\_build\nrf52832_xxaa.axf: error: L6047U: The size of this image (33348 bytes) exceeds the maximum allowed for this version of the linker

how can I fix it？

[Vidar Berg]

The application's code size must be 32KB or less when building with the free version Keil. For larger applications you must buy a Keil license. Or you can consider using the Segger embedded Studio IDE instead (product page).

[taul]

removed uart codes, and passed the linker.

when I flash softdevice , got these:

Hardware-Breakpoints: 6
Software-Breakpoints: 8192
Watchpoints: 4
JTAG speed: 2000 kHz

Full Chip Erase Done.
Programming Failed!
Error: Flash Download failed - "Cortex-M4"
Flash Load finished at 13:15:53

but if I flash codes, got ok:

Erase Done.
Programming Done.
Verify OK.
* JLink Info: Reset: Halt core after reset via DEMCR.VC_CORERESET.
* JLink Info: Reset: Reset device via AIRCR.SYSRESETREQ.
Application running ...
Flash Load finished at 13:19:54

why I can not flash softdevice?

[taul]

issue fixed. First log being  printed on jLink RTT viewer! 

[taul]

issue fixed. First log being  printed on jLink RTT viewer!