How to debug both cores of the STM32H745 simultaneously?

[yuri CH]

Hello!

i am working with the stm32h745 nucleo 144 board.

i want to be able to debug both cores simultaneously using the onboard STLINK debugger, with no luck so far.

followed the instructions from this ST document: https://www.st.com/resource/en/application_note/dm00597308-stm32h7x5x7-dualcore-microcontroller-debugging-stmicroelectronics.pdf

the defenitions are in place, i am able to start download and debug on one of the cores (doesnt matter which) as long as the other one is not touched. as soon as i try to start debbugging the other one (on a seperate instance of IAR) i get the following error message: Fatal Error - STLINK connection error.

please advise on how to make this work and what am i doing wrong?

thanks in advance.

[Imen.D]

Hello @yuri CH​ ,

Make sure you have the recent ST-LINK firmware and drivers.

When your question is answered, please close this topic by choosing Select as Best. This will help other users find that answer faster.

Imen

[yuri CH]

Hi, thanks for responding.

i have tried with the board as it arrived.

after i was unsuccessful i have connected to the nucleo board with stmCubeProgrammer

and updated the ST link to V3.

still doesn't work.