DFU customize

Question

Hello. 
 During customizing a DFU, but I'm having trouble adding function [nrf_dfu_transports_close] in function [on_ctrl_pt_write]. 
 I'm not now fetching all the c files, only the functions I need. 
 When I compile I get the following error. Why is that? 
 section .dfu_trans LMA [0000000000038700,0000000000038707] overlaps section .data LMA [0000000000038700,0000000000038937] 
 
 compiler : eclipse(gcc) 
 mcu : nRF52840

bjorn-spockeli · Accepted Answer

Are you using the Makefile from the SDK example to compile the bootloader project? Below is the default linker script for our Bootloader example project. In your linker script there appears to be a lot of sections missing. 
 /* Linker script to configure memory regions. */

SEARCH_DIR(.)
GROUP(-lgcc -lc -lnosys)

MEMORY
{
 FLASH (rx) : ORIGIN = 0xf8000, LENGTH = 0x6000
 RAM (rwx) : ORIGIN = 0x200057b8, LENGTH = 0x3a848
 uicr_bootloader_start_address (r) : ORIGIN = 0x00000FF8, LENGTH = 0x4
 bootloader_settings_page (r) : ORIGIN = 0x000FF000, LENGTH = 0x1000
 uicr_mbr_params_page (r) : ORIGIN = 0x00000FFC, LENGTH = 0x4
 mbr_params_page (r) : ORIGIN = 0x000FE000, LENGTH = 0x1000
}

SECTIONS
{
 . = ALIGN(4);
 .uicr_bootloader_start_address :
 {
 PROVIDE(__start_uicr_bootloader_start_address = .);
 KEEP(*(SORT(.uicr_bootloader_start_address*)))
 PROVIDE(__stop_uicr_bootloader_start_address = .);
 } > uicr_bootloader_start_address
 . = ALIGN(4);
 .bootloader_settings_page(NOLOAD) :
 {
 PROVIDE(__start_bootloader_settings_page = .);
 KEEP(*(SORT(.bootloader_settings_page*)))
 PROVIDE(__stop_bootloader_settings_page = .);
 } > bootloader_settings_page
 . = ALIGN(4);
 .uicr_mbr_params_page :
 {
 PROVIDE(__start_uicr_mbr_params_page = .);
 KEEP(*(SORT(.uicr_mbr_params_page*)))
 PROVIDE(__stop_uicr_mbr_params_page = .);
 } > uicr_mbr_params_page
 . = ALIGN(4);
 .mbr_params_page(NOLOAD) :
 {
 PROVIDE(__start_mbr_params_page = .);
 KEEP(*(SORT(.mbr_params_page*)))
 PROVIDE(__stop_mbr_params_page = .);
 } > mbr_params_page
}

SECTIONS
{
 . = ALIGN(4);
 .mem_section_dummy_ram :
 {
 }
 .log_dynamic_data :
 {
 PROVIDE(__start_log_dynamic_data = .);
 KEEP(*(SORT(.log_dynamic_data*)))
 PROVIDE(__stop_log_dynamic_data = .);
 } > RAM
 .log_filter_data :
 {
 PROVIDE(__start_log_filter_data = .);
 KEEP(*(SORT(.log_filter_data*)))
 PROVIDE(__stop_log_filter_data = .);
 } > RAM
 .fs_data :
 {
 PROVIDE(__start_fs_data = .);
 KEEP(*(.fs_data))
 PROVIDE(__stop_fs_data = .);
 } > RAM

} INSERT AFTER .data;

SECTIONS
{
 .mem_section_dummy_rom :
 {
 }
 .crypto_data :
 {
 PROVIDE(__start_crypto_data = .);
 KEEP(*(SORT(.crypto_data*)))
 PROVIDE(__stop_crypto_data = .);
 } > FLASH
 .nrf_queue :
 {
 PROVIDE(__start_nrf_queue = .);
 KEEP(*(.nrf_queue))
 PROVIDE(__stop_nrf_queue = .);
 } > FLASH
 .dfu_trans :
 {
 PROVIDE(__start_dfu_trans = .);
 KEEP(*(SORT(.dfu_trans*)))
 PROVIDE(__stop_dfu_trans = .);
 } > FLASH
 .svc_data :
 {
 PROVIDE(__start_svc_data = .);
 KEEP(*(.svc_data))
 PROVIDE(__stop_svc_data = .);
 } > FLASH
 .log_const_data :
 {
 PROVIDE(__start_log_const_data = .);
 KEEP(*(SORT(.log_const_data*)))
 PROVIDE(__stop_log_const_data = .);
 } > FLASH
 .nrf_balloc :
 {
 PROVIDE(__start_nrf_balloc = .);
 KEEP(*(.nrf_balloc))
 PROVIDE(__stop_nrf_balloc = .);
 } > FLASH
 .sdh_ble_observers :
 {
 PROVIDE(__start_sdh_ble_observers = .);
 KEEP(*(SORT(.sdh_ble_observers*)))
 PROVIDE(__stop_sdh_ble_observers = .);
 } > FLASH
 .log_backends :
 {
 PROVIDE(__start_log_backends = .);
 KEEP(*(SORT(.log_backends*)))
 PROVIDE(__stop_log_backends = .);
 } > FLASH
 .sdh_req_observers :
 {
 PROVIDE(__start_sdh_req_observers = .);
 KEEP(*(SORT(.sdh_req_observers*)))
 PROVIDE(__stop_sdh_req_observers = .);
 } > FLASH
 .sdh_state_observers :
 {
 PROVIDE(__start_sdh_state_observers = .);
 KEEP(*(SORT(.sdh_state_observers*)))
 PROVIDE(__stop_sdh_state_observers = .);
 } > FLASH
 .sdh_stack_observers :
 {
 PROVIDE(__start_sdh_stack_observers = .);
 KEEP(*(SORT(.sdh_stack_observers*)))
 PROVIDE(__stop_sdh_stack_observers = .);
 } > FLASH
 .sdh_soc_observers :
 {
 PROVIDE(__start_sdh_soc_observers = .);
 KEEP(*(SORT(.sdh_soc_observers*)))
 PROVIDE(__stop_sdh_soc_observers = .);
 } > FLASH

} INSERT AFTER .text


INCLUDE "nrf_common.ld"

DFU customize

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