Segger emb studio with nRF51422: undefined symbol: __data_start__

[jer lon]

trying to program an nRF51422 chip with Segger embedded studio with soft device

i get the error

"Checking project status
Building ‘ble_app_uart_c_pca10028_s130’ from solution ‘ble_app_uart_c_pca10028_s130’ in configuration ‘nrf51422_xxac’
  Linking ble_app_uart_c_pca10028_s130.elf
    
    undefined symbol: __data_start__
Build failed"

[jer lon]

to add a few more details, because this is all very confusing to me:

1. this is taking place when i 'build' the program

2. the program was important from SDK12 (nRF5SDK1230.zip) (because we want to use softdevice s130 for the n51 chip)

3. the program was imported from the SDK (C:\nordic_semi\nRF5SDK1230\nRF5_SDK_12.3.0_d7731ad\examples\ble_central\ble_app_uart_c\pca10028\s130\iar\ble_app_uart_c_pca10028_s130)

because SDK12 does not have SES files (Segger embedded files) such as NDK 15 does

(we followed the instructions for file imports)

4. the connection is by SWD and seems to work

5. we are able to use nfrGO to upload the soft device (though i'm a bit confused with why segger is not doing that)

[Vidar Berg]

Hi, 

Please try follow the instructions given in this blog post link. You need to include the Nordic specific startup files after importing the project.    

[jer lon]

thanks. does it need to be 3.10e, or can it also work with the most recent version 4.12?

[jer lon]

we kinda got it to work.

but with a lot of config changes such as

preprocessor definitions:

BLE_STACK_SUPPORT_REQD

__HEAP_SIZE=0

NRF51422

BOARD_PCA10028

NRF_SD_BLE_API_VERSION=2

S130

BSP_UART_SUPPORT

NRF51

SOFTDEVICE_PRESENT

SWI_DISABLE0

and User included directoris

./../../../config/ble_app_uart_c_pca10028_s130

./../../../config

./../../../../../../components

./../../../../../../components/ble/ble_advertising

./../../../../../../components/ble/ble_db_discovery

./../../../../../../components/ble/ble_dtm

./../../../../../../components/ble/ble_racp

./../../../../../../components/ble/ble_services/ble_ancs_c

./../../../../../../components/ble/ble_services/ble_ans_c

./../../../../../../components/ble/ble_services/ble_bas

./../../../../../../components/ble/ble_services/ble_bas_c

./../../../../../../components/ble/ble_services/ble_cscs

./../../../../../../components/ble/ble_services/ble_cts_c

./../../../../../../components/ble/ble_services/ble_dfu

./../../../../../../components/ble/ble_services/ble_dis

./../../../../../../components/ble/ble_services/ble_gls

./../../../../../../components/ble/ble_services/ble_hids

./../../../../../../components/ble/ble_services/ble_hrs

./../../../../../../components/ble/ble_services/ble_hrs_c

./../../../../../../components/ble/ble_services/ble_hts

./../../../../../../components/ble/ble_services/ble_ias

./../../../../../../components/ble/ble_services/ble_ias_c

./../../../../../../components/ble/ble_services/ble_lbs

./../../../../../../components/ble/ble_services/ble_lbs_c

./../../../../../../components/ble/ble_services/ble_lls

./../../../../../../components/ble/ble_services/ble_nus

./../../../../../../components/ble/ble_services/ble_nus_c

./../../../../../../components/ble/ble_services/ble_rscs

./../../../../../../components/ble/ble_services/ble_rscs_c

./../../../../../../components/ble/ble_services/ble_tps

./../../../../../../components/ble/common

./../../../../../../components/ble/nrf_ble_qwr

./../../../../../../components/ble/peer_manager

./../../../../../../components/boards

./../../../../../../components/device

./../../../../../../components/drivers_nrf/adc

./../../../../../../components/drivers_nrf/clock

./../../../../../../components/drivers_nrf/common

./../../../../../../components/drivers_nrf/comp

./../../../../../../components/drivers_nrf/delay

./../../../../../../components/drivers_nrf/gpiote

./../../../../../../components/drivers_nrf/hal

./../../../../../../components/drivers_nrf/i2s

./../../../../../../components/drivers_nrf/lpcomp

./../../../../../../components/drivers_nrf/pdm

./../../../../../../components/drivers_nrf/power

./../../../../../../components/drivers_nrf/ppi

./../../../../../../components/drivers_nrf/pwm

./../../../../../../components/drivers_nrf/qdec

./../../../../../../components/drivers_nrf/rng

./../../../../../../components/drivers_nrf/rtc

./../../../../../../components/drivers_nrf/saadc

./../../../../../../components/drivers_nrf/spi_master

./../../../../../../components/drivers_nrf/spi_slave

./../../../../../../components/drivers_nrf/swi

./../../../../../../components/drivers_nrf/timer

./../../../../../../components/drivers_nrf/twi_master

./../../../../../../components/drivers_nrf/twis_slave

./../../../../../../components/drivers_nrf/uart

./../../../../../../components/drivers_nrf/usbd

./../../../../../../components/drivers_nrf/wdt

./../../../../../../components/libraries/bsp

./../../../../../../components/libraries/button

./../../../../../../components/libraries/crc16

./../../../../../../components/libraries/crc32

./../../../../../../components/libraries/csense

./../../../../../../components/libraries/csense_drv

./../../../../../../components/libraries/experimental_section_vars

./../../../../../../components/libraries/fds

./../../../../../../components/libraries/fifo

./../../../../../../components/libraries/fstorage

./../../../../../../components/libraries/gpiote

./../../../../../../components/libraries/hardfault

./../../../../../../components/libraries/hci

./../../../../../../components/libraries/led_softblink

./../../../../../../components/libraries/log

./../../../../../../components/libraries/log/src

./../../../../../../components/libraries/low_power_pwm

./../../../../../../components/libraries/mem_manager

./../../../../../../components/libraries/pwm

./../../../../../../components/libraries/queue

./../../../../../../components/libraries/scheduler

./../../../../../../components/libraries/slip

./../../../../../../components/libraries/timer

./../../../../../../components/libraries/twi

./../../../../../../components/libraries/uart

./../../../../../../components/libraries/usbd

./../../../../../../components/libraries/usbd/class/audio

./../../../../../../components/libraries/usbd/class/cdc

./../../../../../../components/libraries/usbd/class/cdc/acm

./../../../../../../components/libraries/usbd/class/hid

./../../../../../../components/libraries/usbd/class/hid/generic

./../../../../../../components/libraries/usbd/class/hid/kbd

./../../../../../../components/libraries/usbd/class/hid/mouse

./../../../../../../components/libraries/usbd/class/msc

./../../../../../../components/libraries/usbd/config

./../../../../../../components/libraries/util

./../../../../../../components/softdevice/common/softdevice_handler

./../../../../../../components/softdevice/s130/headers

./../../../../../../components/softdevice/s130/headers/nrf51

./../../../../../../components/toolchain

./../../../../../../components/toolchain/cmsis/include

./../../../../../../external/segger_rtt

./../config

[kunalM]

I'm using nrf51822 and faced this same issue, I tried your solution but it did not work for me.

I'm using sdk12.3 on segger 4.10.