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Zephyr with STM32H735g_disco board crashes when executing the z_msleep function

MCons.2
Associate II

‎2025-04-04 1:20 PM - last edited on ‎2025-04-07 2:06 AM by

Project: samples/basic/blinky

board: stm32h735g_disco

I am using the latest Zephyr 4.1

If have a simple project `sample/basic/blinky`. Using the west command to compile the project, flash the board, debug the board with OpenOCD protocol.

Everytime I used the debugger (dbg), I am able to step by step the project until I reach the k_msSeep() function.

A friend of mine help me to debug it and we were able find that the system breaks as indicated in the picture below.

If I don't use the debugger DBG, then the software does not crash... It just work.

MCons2_0-1743797767369.png

 

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Pavel A.
Evangelist III

‎2025-04-04 1:34 PM - edited ‎2025-04-04 3:47 PM

IIRC gdb (or certain "target monitors") have problems with single-stepping thru some ARM assembly inlines. Unless you want to debug the debugger - avoid single stepping thru these things. 

 

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MCons.2
Associate II
In response to Pavel A.

‎2025-04-07 5:38 AM - edited ‎2025-04-07 6:56 AM

@Pavel A. It doesn't need to be single stepping. Just need to be in debug mode. The problem occurs with the `west debug` command or with the STM32CubeIDE. If I just flash it, it is working with no issue. Not very practical to design a new application.

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