How to use Single Frame Buffer and SPI display (ILI9431) with Nucleo-H563ZI

[bbasnet]

Hello,
I am trying to use Nucleo-H563ZI with SPI display (ILI9431) with Single Frame buffer but i couldn't configure it and didn't find appropriate example. Do anyone have used SPI display with Single Frame Buffer? Any help would be great.
I do have sufficient space to implement single Frame Buffer. I am lacking knowledge for implementation.

I have successfully used partial frame buffer but there was a problem, whenever i used .invalidate() to update textArea other box flicker in the display. On the partial frame buffer i used SPI with DMA. 

Thank you

kind regards,
Binod Basnet

[JohanAstrup]

Hello @bbasnet.

For an example of how to use a single framebuffer, I would recommend you to look at the NUCLEO-U575ZI + RVA35HI TBS available in TouchGFX Designer. This project uses FMC to transfer data to the display; however, the concept is similar to SPI. The TBS is configured to use optimized single framebuffer.

Refer to the following articles for additional information:
https://support.touchgfx.com/4.26/academy/how-to/single-framebuffer
https://support.touchgfx.com/4.26/docs/basic-concepts/framebuffer#framebuffer-strategies
https://support.touchgfx.com/4.26/docs/development/touchgfx-hal-development/scenarios/scenarios-spi

Could you share a video of the flickering you are experiencing with partial framebuffer? Does it occur only when running on target, or does it also happen when running the simulator?

Best regards,
Johan

[bbasnet]

Hello @JohanAstrup ,

Thank you so much for your response. I will check the links you have mentioned and try to follow it.

I have shared the video of flickering, its not so clear in video. My implementation code is below. The text doesn't flicker but boxes do. It happens when i use ".invalidate()". In case of not using ".invalidate()" to update text the boxes doesn't flickers. 
I have tried same project with using STM32F411E-Disco (SPI + DMA + partial Framebuffer) there was not any problem, maybe i am missing something with configuration in Nucleo-H563ZI.Thank you.
Kind regards,
Binod Basnet

void screenView::handleTickEvent()

{

counter++;

Unicode::snprintf(textArea1Buffer, TEXTAREA1_SIZE, "%d", counter);

textArea1.invalidate();

if(counter == 100000)

{

counter = 0;

}

}