Does STM32CubeIDE not support live variable watching?

[DHama.1]

We are trying to achieve the same kind of variable watching Keil has but with the STM32CubeIDE. The variables do not appear in the Variables tab under the Debug view so we added dummy variables to the expression tab. The initial value of the variable shows fine and then when we resume the program after the HAL_Init breakpoint the 'Target not available.' error appears. Was anyone able to get the feature to work? Or are we supposed to use another program if we want this feature?

Thanks,

David.

[JMark.1]

Hello @DHama.1​ , I think Live Expressions will do the job :)

[DHama.1]

I tried that option as well, when I insert any variable inside it I'm getting "This feature is not supported" in the value column. Is there anything special I need to do to make it work?

[Markus GIRDLAND]

It looks like you are using OpenOCD which does not support Live expressions. You need to switch the debug probe to either ST-Link GDB server or J-Link, they both support the feature.

[EHyld.1]

Hello Markus. Is this still true with the newest update? It says Improved OpenOCD supporting: Live expressions. But I still get the "This feature is not supported" when connecting over OpenOCD. Is there anything i need to do in addition?

[Olivier GALLIEN]

Hi @EHyld.1​ ,

Live Watching is claimed as new feature of the latest STM32CubeIDE release V1.5.

Olivier

[Gudgel.boB]

Is there a way to adjust the live expressions update frequency ?

What is it by default ? I cannot seem to find how to change its sampling rate or what the rate actually is.

It works is all I know.

[YoungXuan]

Two Steps:

1 Project-properties-C/C++build-Setting-McuGccCompiler-Optimization-None(-O0)

2 move the variable to globle (out of main)as static.

That's all.