Using any type of text causes HardFault

[HMehr.14]

Hello,

I followed this guide (https://touchgfx.zendesk.com/hc/en-us/articles/115002741432-Create-custom-Application-Template) to adding TouchGFX to my existing project.

I'm working with IAR 8.30.1 and tgfx 4.10.0 and STM32F429ZG and FreeRTOS V9.0.0 ( with `heap_4.c` as memory manager ).

Everything works well now, except texts. Every time I added components that contain text, Hard Fault occurs during redraw (*.invalidate()) it.

I added 

virtual void handleTickEvent() { container.invalidate(); }

to my ScreenView class to verifying DMA2D and LTDC configurations. All components work well. But existing just a text component causes HardFault.

By tracking `LR` and `PC`, I find out that HardFault occures in `TextProvider` class.

I think stack corrupted. Due to often times, `PC` is in the `DataSection`.

I increased the stack size of my GUI task and `configTOTAL_HEAP_SIZE` of FreeRTOS configuration, But results not changed. Is there any other stack size ( or heap size ) limitation?

Or, May I has been configured `BoardConfiguration.cpp`, `STM32F4DMA.cpp` or `STM32F4HAL.cpp` in a wrong way ?

For more details :

Please share your suggestions about my problem with me.

Thanks in advance.

[RPipi.1]

Sorry for not giving more answers. So this was solved by not using stm32cubeide. I think something was cached by the IDE. not sure.

But since swapping to developing in visual studio code and generating with touchgfx I have no more issues. Previously I built with STM32CUBEIDE.

[ASmer.1]

Its old topic, however I just encountered this thing. TouchGFX 4.2 CubeIDE 1.10.1.

Adding static text - no wildcards- causes immediate HF. Has anyone came to some other then "use VS code" solution?

[ASmer.1]

Problem is not occuring when Text section is placed in internal flash. It's confusing because all other assets work from external flash perfectly well.

[RPipi.1]

I am using vscode for editing and building using touchgfx(makefile). You can edit in cubeidea as well but build with touchgfx(makefile).

since moving things to internal flash works I guess there is something messing up in addressing when content is placed in external flash. Maybe it even works if you explicitly place the content at a certain external address.

could it be that cubeidea / eclipse is configured to make its own makefile? Tried explicitly choosing which makefile to use? I never did this my self.

however to me it seemed like adding removing items to the ui for a number of times eventually messed things out. So I am guessing the position of items is off in regards to where it is in the memory.

however for me after switching to vs code + makefile build everything works all the time :) been developing for a year now.

[RPipi.1]

Check what differs in map when building in idea vs in touchgfx

[Martin KJELDSEN]

Try to ensure that QuadSpi is initialized before TouchGFX. TouchGFX will attempt to access the flash to init texts, but if not initialized yet then you'll get a HF.

What does your main function look like?

/Martin

[ASmer.1]

Martin,

I didn't have time to further investigate the issue, however QSPI is initialized before TGFX. I have all assets including fonts in external memory. I believe RPipi is correct that something is being messed up as widgets are added removed. All worked well - including texts in external flash- fo certain point (lets say 8 text area's) Adding one more caused HT. Removing added area didn't cure the issue. Only removing all text area's got rid of HT. For now i left text in internal flash. Will have closer look at it when time allows.

[Martin KJELDSEN]

Okay, let me know. You can just post to this thread and i'll try to help.

[MSecr.1]

I was facing that specific issue due to a stack overflow, so make sure you allocated enough memory for the stack