RE: How to use uicr_config.h in SEGGER EMBEDED STUDIO

robwasab — Tue, 20 Aug 2019 01:03:07 GMT

To elaborate on AndreasF answer,

You need to change your declared C variable to the following:

const uint32_t UICR_ADDR_0x20C __attribute__((section(".UICR_0x20C"))) = 0xFFFFFFE;

.UICR_0x20C is the name of my section in the flash_placement.xml. See end of message for flash_placement snippet.

This will tell the linker to put your C variable into the section declared in the placement xml file.

Also, not proud to say, but I spent all day trying to get this to work, and the most critical part for me was changing the build setting's memory segments to "UICR RWX 0x10001000 0x210". (This is slightly different than Andreas's answer because I'm using a size of 0x210 - NRF52832)

Another advice note: I was checking the output .map file to verify the method worked.

Good luck reader!

<MemorySegment name="UICR" start="0x10001000" size="0x210">
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".UICR_0x20C" start="0x1000120C"/>
</MemorySegment>

RE: How to use uicr_config.h in SEGGER EMBEDED STUDIO

AndreasF — Mon, 21 Jan 2019 13:50:56 GMT

Hi.

The following worked for me:

1. Open SES.

2. Click on "Edit Options" for the project you are looking at.

3. Select the "Common" configuration.

4. Click on the "Build" tab.

5. Double click on "Memory Segments"

Add the line "UICR RWX 0x10001000 x304, so that the content looks like this:

FLASH RX 0x0 0x78000
RAM RWX 0x20000000 0xf000
UICR RWX 0x10001000 0x304

And click on OK -> and click on OK.

I found the value 0x304 in the product specification:

I dont think EXTSUPPLY exists anymore.

6. Open the flash_placement.xml file for the project, and add:

  <MemorySegment name="UICR" start="0x10001000" size="0x304">
    <ProgramSection alignment="4" load="Yes" name=".uicr" keep="Yes"/>
  </MemorySegment>

The file for the project I tested looked like this:

(nrf5_SDK_for_Mesh_v3.1.0\examples\experimental_lpn project)

<!DOCTYPE Linker_Placement_File>
<Root name="Flash Section Placement">
  <MemorySegment name="FLASH" start="$(FLASH_PH_START)" size="$(FLASH_PH_SIZE)">
    <ProgramSection load="no" name=".reserved_flash" start="$(FLASH_PH_START)" size="$(FLASH_START)-$(FLASH_PH_START)" />
    <ProgramSection alignment="0x100" load="Yes" name=".vectors" start="$(FLASH_START)" />
    <ProgramSection alignment="4" load="Yes" name=".init" />
    <ProgramSection alignment="4" load="Yes" name=".init_rodata" />
    <ProgramSection alignment="4" load="Yes" name=".text" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".sdh_soc_observers" inputsections="*(SORT(.sdh_soc_observers*))" address_symbol="__start_sdh_soc_observers" end_symbol="__stop_sdh_soc_observers" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".sdh_ble_observers" inputsections="*(SORT(.sdh_ble_observers*))" address_symbol="__start_sdh_ble_observers" end_symbol="__stop_sdh_ble_observers" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".pwr_mgmt_data" inputsections="*(SORT(.pwr_mgmt_data*))" address_symbol="__start_pwr_mgmt_data" end_symbol="__stop_pwr_mgmt_data" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".log_const_data" inputsections="*(SORT(.log_const_data*))" address_symbol="__start_log_const_data" end_symbol="__stop_log_const_data" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".nrf_balloc" inputsections="*(.nrf_balloc*)" address_symbol="__start_nrf_balloc" end_symbol="__stop_nrf_balloc" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".sdh_state_observers" inputsections="*(SORT(.sdh_state_observers*))" address_symbol="__start_sdh_state_observers" end_symbol="__stop_sdh_state_observers" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".sdh_stack_observers" inputsections="*(SORT(.sdh_stack_observers*))" address_symbol="__start_sdh_stack_observers" end_symbol="__stop_sdh_stack_observers" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".sdh_req_observers" inputsections="*(SORT(.sdh_req_observers*))" address_symbol="__start_sdh_req_observers" end_symbol="__stop_sdh_req_observers" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".nrf_queue" inputsections="*(.nrf_queue*)" address_symbol="__start_nrf_queue" end_symbol="__stop_nrf_queue" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".cli_command" inputsections="*(.cli_command*)" address_symbol="__start_cli_command" end_symbol="__stop_cli_command" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".crypto_data" inputsections="*(SORT(.crypto_data*))" address_symbol="__start_crypto_data" end_symbol="__stop_crypto_data" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".nrf_sections" address_symbol="__start_nrf_sections" />
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".log_dynamic_data"  inputsections="*(SORT(.log_dynamic_data*))" runin=".log_dynamic_data_run"/>
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".fs_data"  inputsections="*(.fs_data*)" runin=".fs_data_run"/>
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".cli_sorted_cmd_ptrs"  inputsections="*(.cli_sorted_cmd_ptrs*)" runin=".cli_sorted_cmd_ptrs_run"/>
    <ProgramSection alignment="4" keep="Yes" load="Yes" name=".nrf_mesh_flash"  inputsections="*(SORT(.nrf_mesh_flash.*))" address_symbol="__start_nrf_mesh_flash" end_symbol="__stop_nrf_mesh_flash"/>
    <ProgramSection alignment="4" load="Yes" name=".dtors" />
    <ProgramSection alignment="4" load="Yes" name=".ctors" />
    <ProgramSection alignment="4" load="Yes" name=".rodata" />
    <ProgramSection alignment="4" load="Yes" name=".ARM.exidx" address_symbol="__exidx_start" end_symbol="__exidx_end" />
    <ProgramSection alignment="4" load="Yes" runin=".fast_run" name=".fast" />
    <ProgramSection alignment="4" load="Yes" runin=".data_run" name=".data" />
    <ProgramSection alignment="4" load="Yes" runin=".tdata_run" name=".tdata" />
  </MemorySegment>
  <MemorySegment name="RAM" start="$(RAM_PH_START)" size="$(RAM_PH_SIZE)">
    <ProgramSection load="no" name=".reserved_ram" start="$(RAM_PH_START)" size="$(RAM_START)-$(RAM_PH_START)" />
    <ProgramSection alignment="0x100" load="No" name=".vectors_ram" start="$(RAM_START)" address_symbol="__app_ram_start__"/>
    <ProgramSection alignment="4" keep="Yes" load="No" name=".nrf_sections_run" address_symbol="__start_nrf_sections_run" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".log_dynamic_data_run" address_symbol="__start_log_dynamic_data" end_symbol="__stop_log_dynamic_data" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".fs_data_run" address_symbol="__start_fs_data" end_symbol="__stop_fs_data" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".cli_sorted_cmd_ptrs_run" address_symbol="__start_cli_sorted_cmd_ptrs" end_symbol="__stop_cli_sorted_cmd_ptrs" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".nrf_sections_run_end" address_symbol="__end_nrf_sections_run" />
    <ProgramSection alignment="4" keep="Yes" load="No" name=".nrf_mesh_ram"  inputsections="*(SORT(.nrf_mesh_ram.*))" address_symbol="__start_nrf_mesh_ram" end_symbol="__stop_nrf_mesh_ram"/>
    <ProgramSection alignment="4" load="No" name=".fast_run" />
    <ProgramSection alignment="4" load="No" name=".data_run" />
    <ProgramSection alignment="4" load="No" name=".tdata_run" />
    <ProgramSection alignment="4" load="No" name=".bss" />
    <ProgramSection alignment="4" load="No" name=".tbss" />
    <ProgramSection alignment="4" load="No" name=".non_init" />
    <ProgramSection alignment="4" size="__HEAPSIZE__" load="No" name=".heap" />
    <ProgramSection alignment="8" size="__STACKSIZE__" load="No" place_from_segment_end="Yes" name=".stack"  address_symbol="__StackLimit" end_symbol="__StackTop"/>
    <ProgramSection alignment="8" size="__STACKSIZE_PROCESS__" load="No" name=".stack_process" />
  </MemorySegment>
  <MemorySegment name="UICR" start="0x10001000" size="0x304">
    <ProgramSection alignment="4" load="Yes" name=".uicr" keep="Yes"/>
  </MemorySegment>
</Root>

And as you see in the output map file, the memory configuration looks like this now:

Memory Configuration

Name             Origin             Length             Attributes
UNPLACED_SECTIONS 0x0000000100000000 0x0000000000000000 xw
UICR             0x0000000010001000 0x0000000000000304 xw
RAM              0x0000000020000000 0x000000000000f000 xw
FLASH            0x0000000000000000 0x0000000000078000 xw
*default*        0x0000000000000000 0xffffffffffffffff

Linker script and memory map

                0x0000000000000000                __vfprintf = __vfprintf_int
                0x0000000000000000                __vfscanf = __vfscanf_int
                0x0000000010001000                __UICR_segment_start__ = 0x10001000
                0x0000000010001304                __UICR_segment_end__ = 0x10001304
                0x0000000000000304                __UICR_segment_size__ = 0x304


and so on...

I hope this helps you.

Best regards,

Andreas