nrfjprog segfault

[AK]

Hi,

I'm trying to flash my device. Until yesterday, this command ran just fine and I was able to flashing my nRF51 chip. But I'm unable to do so anymore and can't figure out what changed.

$ ./nrfjprog -f nrf51 --chiperase --reset --program zephyr.hex

Webserver running on local port 19080
Using read only filesystem.
Upload disabled.
Segmentation fault (core dumped)

I've tried the python client as well, but get the same error.

$ python nrfjprog_cli.py program -e -r -f  zephyr.hex

Programs the device.
Webserver running on local port 19080
Using read only filesystem.
Upload disabled.
Segmentation fault (core dumped)

This is a on a linux system and dmesg shows the following in the logs:

nrfjprog[14312]: segfault at 7f2c000584ba ip 00007f2c4c5ca1a2 sp 00007fff5a68c200 error 4 in libjlinkarm.so.6.1.5[7f2c4c3a7000+403000]

I'm using the nRF52 DK connected over SWD (P20) to flash the nRF51 chip.

[AK]

I figured out what changed. I installed JLink_Linux_V601e_x86_64.deb yesterday that installed new versions of the JLink software in /opt/Segger and changed the symlink to point to this new version. doh

[TasosR]

I have the same problem, but re-installing the Segger JLink didn't solve anything...

[Einar Thorsrud]

Hi,

Please make a new question where you describe your setup and problem in more detail.

[TasosR]

While running

nrfjprog --memwr 0x10001304 --val 0xFFFFFFFD 

my linux machine returns

Segmentation fault (core dumped)

and at the same time the dmesg has produced the error:

[ 3941.782725] nrfjprog[5256]: segfault at fffffffffffffff9 ip 00007f4045dce04f sp 00007ffe3b537bb0 error 5 in libjlinkarm_unknown_nrfjprogdll.so.9.8.1[7f4045dc5000+15000]

[Einar Thorsrud]

Perhaps you have a version mismatch between nrfjprog and which version of the J-Link software are you using? Remember to update the symlink as mentioned by the creator of this thread.

[TasosR]

I believe the versions match:

:~$ nrfjprog -v
nrfjprog version: 9.8.1
JLinkARM.dll version: 6.42f

and

$ JLinkExe 
SEGGER J-Link Commander V6.42f (Compiled Feb 26 2019 17:01:38)
DLL version V6.42f, compiled Feb 26 2019 17:01:29

[Einar Thorsrud]

I see. Then the only suggestion I have is to try with J-Link version 6.40, as that is what nrfjprog 9.8.1 has been tested with.