STM32WL CubeIDE "Could not verify ST device! Abort connection on core CM0+, CM4 working fine

[Phoenix]

During debugging of a dual core application everything works fine for the CM4 core debug config and afterwards starting the program. As soon as I try to add the debug config for CM0+ the following error occurs:

 
STMicroelectronics ST-LINK GDB server. Version 6.1.0
Copyright (c) 2022, STMicroelectronics. All rights reserved.
 
Starting server with the following options:
        Persistent Mode            : Disabled
        Logging Level              : 1
        Listen Port Number         : 61235
        Status Refresh Delay       : 15s
        Verbose Mode               : Disabled
        SWD Debug                  : Enabled
 
 
Error in initializing ST-LINK device.
Reason: ST-LINK: Could not verify ST device! Abort connection.

I can reproduce the error using Nucleo-WL55JC1 with example dual core projects, so it is at least not my code. Tried onboard ST-link v3 and external STLINK V3SET.

I verified my config following this tutorial.

CubeMonitor and CubeProgrammer can connect without any issues.

[LaurentL · Accepted solution]

Hello,

This issue is confirmed, see answer on this post :

https://community.st.com/s/question/0D53W00001PxJDeSAN/stm32wl55-dual-core-debug-error-18-when-debugging-cm0

Rgds,

Laurent

[Phoenix]

Merci Laurent!

My searches didn't return this... I think I need to work on my Google-Fu 😉