Limit to number of Text Area items on TouchGFX screen?

[DBart.1]

Does anyone know what might limit the number of text (Text Area) items that can be displayed on the screen?

I am using TouchGFX designer (4.13.0) to generate an application on a STM32H743I-EVAL2 board. My application has very basic screens. I find that a screen will not appear on the display if it contains >12 visible text items, and the application appears to hang. Additional text items can be in the design so long as visible is checked on no more than 12 items. A button containing text seems to count as one of the 12 text items. I ruled out: length of text content, font size, and font color as affecting this problem.

I can programatically make additional text items appear by adding a button, where a button click makes a 13th, 14th (and probably more) text items visible.

Let me know if you have a suggestion or can explain why this problem occurs.

Thank you,

Dan

[DBart.1]

Martin,

I am able to debug using Keil after updating from 5.27 to 5.29. Here's where the code is when the error occurs.

FROM: smm32h7xx_hal_tim.c (line 3244)

void HAL_TIM_IRQHandler(TIM_HandleTypeDef *htim)

 /* Capture compare 3 event */

 if (__HAL_TIM_GET_FLAG(htim, TIM_FLAG_CC3) != RESET)

 {

TO: startup_stm32h743xx.s - Reset_Handler (line 238)

TO: stm32h7xx_it.c (line 88)

void HardFault_Handler(void)

I just now got to this point. Need to leave for the evening. Do you know what I should be looking at next? At selection in CubeMX maybe?

Thanks,

Dan

[DBart.1]

Can you point me to a reference for configuring and setting up access to external flash?

Thank you,

Dan

[DBart.1]

Hi Martin,
I think that I have external flash initialized correctly. My reason is that I can see from the map file that other items already on the display were retrieved from external flash. However, I have not been able to determine the cause of the hard fault (interrupt). Things I have learned:
1. I can cause the same problem to occur if I alter one of the TouchGFX example applications to add a handful of text items. For example, I have done this by adding text items to screen on the Scale & Zoom example application.
2. I can make the problem go away if a text item is present and set to visible, but covered by a box.
Based on what I said, do you think I have external flash initialized correctly? If not, can you point me to a reference where this information is explained?
Do you think this problem might be caused by size of stack, heap, or some count limit (maybe something set within FreeRTOSConfig.h)? I am not clear on how sized of stack and heap for CubeMX relate to those in FreeRTOSConfig.h.
Is this information helpful? Do you have suggestions?
If you like, I could zip and send my project files to you.
Thank you,
Dan