vscode启动debug失败！

RE: vscode启动debug失败！

wildseyes — Thu, 27 Feb 2025 03:19:49 GMT

Final Update: Root Cause Identified! ✅

The real issue was not related to VS Code or J-Link GDB Server itself.

I have an isolation module on the SWD interface because I frequently debug motor drivers. This setup works well in STM32 development environments, but it caused issues with the nRF52840 debugging process.

Earlier, I mistakenly assumed that manually starting the GDB Server fixed the issue. In reality, it just happened that I removed the isolation module at the same time I manually started the server. This led to a false correlation, making it seem like the external GDB Server was required.

Final Solution:

Removing the SWD isolation module allowed debugging to work normally.
Now, VS Code automatically starts the J-Link GDB Server, and everything works without manual intervention.

Lesson learned! Hopefully, this helps others who might run into similar hardware-related issues. 🚀🔥

RE: vscode启动debug失败！

wildseyes — Thu, 27 Feb 2025 03:06:07 GMT

gdp translat:
Solution Found! ✅

I have resolved the debugging issue in VS Code for nRF52840.
The key solution is to manually start J-Link GDB Server before launching the debugger.

Steps to Fix:

Manually start J-Link GDB Server before launching VS Code:

bash

JLinkGDBServer -device NRF52840_XXAA -if SWD -speed 4000 -port 2331
Open VS Code and start debugging as usual.
No need to modify launch.json—VS Code will automatically connect to the running GDB Server.

Why This Works?

Sometimes, VS Code tries to start its own GDB Server, which may use a different port (e.g., 46191), causing connection errors.
Manually starting JLinkGDBServer ensures the debugger connects correctly to port 2331.

Thanks to everyone who contributed! Hope this helps others facing the same issue. 🚀🔥

RE: vscode启动debug失败！

Kenneth — Wed, 26 Feb 2025 13:20:06 GMT

Hello,

You need to write in English on this forum. To get familiar with developing and debugging with the nRF52, nRF53, and nRF54 family, do check out:

https://academy.nordicsemi.com/

Kenneth