bootloader example fail in linking

[MH]

Hi,

I have problem on compiling bootloader example which is located at

\Nordic\nrf51822\Board\nrf6310\device_firmware_updates\bootloader

When I try to compile the project the keil compiler will give the below messages and fail to link

   compiling ble_srv_common.c...

linking...
.
\_build\bootloader.axf: Error: L6985E: Unable to automatically place AT section bootloader_settings_arm.o(.ARM.__AT_0x0003FC00) with required base address 0x0003fc00. Please manually place in the scatter file using the --no_autoat option. 
Not enough information to produce a FEEDBACK file.    
Not enough information to list image symbols.    
Finished: 2 information, 0 warning and 1 error messages.    
".\_build\bootloader.axf" - 1 Error(s), 0 Warning(s).   
*** Performing Cross-Module-Optimization:    
*** Feedback file '.\_build\bootloader.fed' not found.    
Target not created

I’m using keil v5.11.1.0 with SDK 6.1.0 and want to use softdevice 7.1

Please give me some suggestions

[clannad_2008]

I meet this problem as well. I use keil and select Optimization level 0 , the problem appears, and I choose other options , the problem disappears. This is very strange.

[Håkon Alseth]

This is because setting -O0 will cause the image to grow, exceeding the size constraints set in the Keil project. The linker will then throw an error. See this post on how to debug the bootloader: devzone.nordicsemi.com/.../