Could not connect to target when use GDB debug in VSCode

RE: Could not connect to target when use GDB debug in VSCode

Priyanka — Tue, 23 Sep 2025 09:03:29 GMT

Hi,

Glad to hear that you got it working. Official J-Link support for nRF54L15 was added only recently, so older packs (like v794a) might not recognize the device name.

Also, VS Code’s nRF Connect debugger doesn’t use Zephyr’s runner scripts, so edits there won’t affect the extension’s debug session.

-Priyanka

RE: Could not connect to target when use GDB debug in VSCode

lkb — Sun, 21 Sep 2025 15:00:48 GMT

But earlier, I modified parameters in zephyr\scripts\west_commands\runners\jlink.py. Why didn't it take effect? Why did the parameters remain the same when starting GDB?

RE: Could not connect to target when use GDB debug in VSCode

lkb — Sun, 21 Sep 2025 14:55:02 GMT

The issue has been resolved. I installed JLINK V870 and it worked.

Thanks.