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Vins
Associate III
September 29, 2022
Question

Frame Buffer Pixel Format - RGB565 to GRAY4. (ILI9341 SPI Display)

  • September 29, 2022
  • 2 replies
  • 3872 views

I have integrated ILI9341 SPI display to Touch GFX. Frame Buffer Pixel Format is - RGB565 and getting the output. But when I change Frame Buffer Pixel Format from RGB565 to GRAY4 not getting the output.

(Actually ILI9341 Supports RGB565). Is this possible to print GRAY4 images on RGB565 ILI9341 display?

Frame Buffer Pixel Format : RGB565

0693W00000UFQFCQA5.png Frame Buffer Pixel Format : GRAY4

0693W00000UFQGPQA5.png

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2 replies

Yoann KLEIN
ST Employee
September 29, 2022

Hello @Vins​ ,

What does "not getting the output" mean for you ?

Do you have corrupted frames or the project is simply not compiling ?

Thanks,

/Yoann

Yoann KLEINST Software Developer | TouchGFX
Vins
VinsAuthor
Associate III
September 29, 2022

@Yoann KLEIN​ Project is compiling but not showing any images from the Touch GFX on ILI9341 display.

Yoann KLEIN
ST Employee
September 29, 2022

What happens when you run on target ?

Can you share screenshots or picture of your display?

Yoann KLEINST Software Developer | TouchGFX
MM..1
Chief III
September 29, 2022

TouchGFX dont mangle framebuffer format to other format for hw LCD. You need rewrite your custom code for partial buffer sending .