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nrfjprog not working on raspberry pi 4

picatostas

Hi

I am trying to setup a raspberry pi 4 for flashing nrf devices. But Nrfjprog doesn't seem to work.

I am using a Raspberry Pi 4 with 2021-05-07-raspios-buster-armhf-lite

I have fetched Segger and nrfjprog deb packages using :

wget --post-data 'accept_license_agreement=accepted&non_emb_ctr=confirmed&submit=Download+software' www.segger.com/.../JLink_Linux_arm.deb

installed them using:

sudo dpkg -i ~/nRF-Command-Line-Tools_10_14_0_LinuxArm/nrf-command-line-tools_10.14.0_armhf.deb
sudo dpkg -i JLink_Linux_arm.deb
I can detect the target using JLinkExe:
but when running nrfjprog I run into this:
log file as follows:
running ldd I get the following

What am I missing ?
If you need anymore details from my setup, let me know.
  • 0

    Hi

    Please try updating to nRF Command Line Tools v10.15.0 which was just released yesterday. Poor timing I'm afraid.

    No,the .deb package doesn't  install pynrfjprog, you have to download this wrapper from our GitHub.

    Best regards,

    Simon

  • 0 in reply to Simonr

    The problem seems to be running the nrfjprog command if I access the RPi over SSH. If I connect a monitor and a keyboard to the RPi v10.14.0/v10.15.0 both work fine. If I access the RPi over SSH and try to use nrfjprog (both v10.14.0/v10.15.0) I get the "worker process is dead" error

  • 0 in reply to Simonr

    Also, like I mentioned earlier installing pynrfjprog from the Github repo either through "pip install pynrfjprog" or "python setup.py install" doesn't install the armhf libraries on my RPi. So when I try to run a script using pynrfjprog I get an API error - 
    "NRFJPROG DLL: -150 NRFJPROG_SUB_DLL_NOT_FOUND. /usr/local/lib/python3.7/dist-packages/pynrfjprog-10.14.0-py3.7.egg/pynrfjprog/lib_armhf/libhighlevelnrfjprog.so"

    I have raised this issue in the github repo as well

  • 0 in reply to Simonr

    Same problem with nRF Command Line Tools v10.15.0. I haven't been able to try it other than over ssh.

    $ nrfjprog -r --log
ERROR: [ Client] - Worker process is dead, cannot execute command.
ERROR: An internal error has occurred, please try again.

  • 0

    Hi

    This sounds like a GUI application fails to start in the SSH text session. 

    export DISPLAY=:0 might help. See this forum post for example. We're able to run nrfjprog 10.14.0 amd64 over SSH on our side though. Perhaps running it with strace or some other debugging tool might give us a clue as to what's going on.
    Best regards,
    Simon
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