Frame buffers

[prathima]

Hello....

Am currently working on STM32L4R9AI-EVAL board and i have so many doubts about frame buffering....

1.when we have to use single frame buffer,when we use double frame buffer,and partial frame buffers and rendering time is less for single buffer or double.....

2.Can we access the frame buffer,if it is yes and how to do that i need a procedure to do that because i don't know anything about it....

3.Do the touchgfx supports vertical swipe and how to enable it...

Thank you in advance

[prathima]

hello...

In the similar way i want to know the "frame buffer name" exactly where they are storing the whole screens so that i want to access that buffer and i want to write all pixels value zero to make (LCD off) after i want to make all Pixels ON by writing 0xffff...how do i do this...

thank you in advance

[prathima]

Hello Guys...

Can you respond....Can we do that or not...

[Alexandre RENOUX]

The framebuffer name for the L4R9-EVAL is GFXMMU_VIRTUAL_BUFFER0_BASE. You can find it if you open the ioc file in LTDC -> Layer Settings

I don't think just writing zero to all values will literally turn off the LCD. If you just want to make the screen black, doing it in the Designer is much easier and recommended.

/Alexandre

[prathima]

Hello...Guys

Is there any solution to do this.....i need to know it ...my project most important requirement is this...and it is a priority one

hope you people will help me as your doing since past...

Thank you so much:)

[Romain DIELEMAN]

Hi, I believe the issue is the fact that multiple functions are handling the drag event in different places and sometimes modifying the value or holding the actions. .I would personally create my own swipeContainer class (just cpy/paste the code generated) and just do all the requested actions into one handleDragEvent call. I am not 100% certain this will work, but I unfortunately do not have the time to get deep into it and give you a code example sorry.

/Romain

[prathima]

Is there possibility to full fill my need....Romain Dieleman

thank you