Trouble in debugging CM4 core in STM32H747IGT6

[PanosGial]

Hello,

I am trying to debug the dual core STM32H747IGT6. Debugging of the CM7 core is always successful but the debugging of the CM4 core has the below errors. 

Some of the times the first error appears and some other, the second error appears:

• First Error:

Failed to read ROM table via AP 3

Error in initializing ST-LINK device.

• Second Error:

non-ADIv5 ! (should not occur with STM32 devices)

Error in initializing ST-LINK device.

Reason: ST-LINK: Could not verify ST device! Abort connection.

I couldn't find a solution for either of the problems. Any help will be appreciated.

[Imen.D]

Hello @PanosGial ,

Start the debugger separately for both cores: CM7 first and then CM4. 

Set up the CM4 debug configuration following the order steps in this AN5361: Getting started with projects based on dual-core STM32H7 microcontrollers in STM32CubeIDE.

Imen

[PanosGial]

I tried everything mentioned in the application note at I still get the same errors