RTT logs broken in SDK14.2 with GCC

RE: RTT logs broken in SDK14.2 with GCC

Eliot Stock — Thu, 30 Aug 2018 21:02:42 GMT

Don't forget the same change for log_dynamic_data, as mentioned here: devzone.nordicsemi.com/.../118749

RE: RTT logs broken in SDK14.2 with GCC

Thomas — Thu, 14 Dec 2017 04:22:39 GMT

in the linker script on SDK 14.0 or 14.1

  .log_const_data :
  {
    PROVIDE(__start_log_const_data = .);
    KEEP(*(.log_const_data))
    PROVIDE(__stop_log_const_data = .);
  } > FLASH

From 14.2 on:

   .log_const_data :
  {
    PROVIDE(__start_log_const_data = .);
    KEEP(*(SORT(.log_const_data*)))
    PROVIDE(__stop_log_const_data = .);
  } > FLASH

#yourwelcome

RE: RTT logs broken in SDK14.2 with GCC

Thomas — Thu, 14 Dec 2017 04:18:41 GMT

Hey Vidar, do you think this should be in a migration document for 14.2 since it broke previously working code?

RE: RTT logs broken in SDK14.2 with GCC

vincent.golle — Thu, 07 Dec 2017 16:26:17 GMT

Thanks for the tip ! it indeed solved the issue

RE: RTT logs broken in SDK14.2 with GCC

Vidar Berg — Thu, 07 Dec 2017 15:12:08 GMT

Hi,

Linker declarations for the logger module (section variables) was changed in SDK 14.2.0, and I assume it may be related to the following bug fix (from SDK 14.2.0 release notes):

Fixed invalid module names in logger output when LTO was used in the GCC compiler.

Because of this you need to update your linker script if you have migrated from an older SDK version.