Sporadic debug launch issues after upgrade

[alannilsson]

I have recently upgraded from 10.2 to 11.1.1.  Since then I am now sporadically seeing the following error when I try to launch a debug session:

following reset read of core registers failed - Ep(08). Cannot access core regs when target running.

Target error from Commit Flash write: Ep(08). Cannot access core regs when target running.

I cannot seem to find rhyme or reason, sometimes just rebuilding and retrying works, sometimes unplugging LPC links and replugging fixes it.  Other time I just have to keep trying multiple times and it will succeed.  Power cycling target has no effect.

I have never seen this until upgrading and I can't reliably figure out why I see it.  Anyone have any idea what it means and how to clear it.

[alannilsson]

So this does the same as when I routinely quite MCUXpresso go and find redline server, kill it and relaunch the whole thing.  The fact that there is a specific button in the GUI to 'clean up' is ridiculous.  Why not just fix the server so it doesn't lock up?

[alannilsson]

This has happened on multiple projects now.  It never happened on the same projects in 10.2.

What is the 'Cleanup Debug' button do?  Whats its purpose, why is it needed?

[ErichStyger]

>>What is the 'Cleanup Debug' button do?  Whats its purpose, why is it needed?

Eclipse and GDB are using a client-server architecture. And it could be that the server is not terminated or blocking, making a connection not possible. The 'Clean Debug' tries to kill these processes.

See point 9 in https://mcuoneclipse.com/2014/11/03/debugging-failure-check-list-and-hints/

or https://mcuoneclipse.com/2012/06/01/killing-me-softly-zombies-and-debugger-engines/

I hope this helps,

Erich

[Alice_Yang]

Hello,

How about disconnect the debugger before next time debug:

And maybe related your project, you can try to debug a simple demo project to test.

Regard,

Alice