Topic : STM32F429 EvoPrimer and Open4 Feature DMA2D graphics accelerator

Forum : ARM

Original Post
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October 12, 2013 - 2:00pm
Guest

The new STM32F429 EvoPrimer / Open4 has been released.

The demo application features the Chrom-ART Graphics Accelerator a DMA2D peripheral for accelerated handling of graphics. It facilitates bitmap encoding/decoding, management of multiple objects on the display, including layering of objects plus blending of graphical objects to include management of transparency.

There's a video of the demo on YouTube:

http://www.youtube.com/watch?v=TJWeVvicvZk&hd=1

And the sample apps are available at stm32circle.com (Direct link: http://www.stm32circle.com/resources/stm3242Iprimer.php)
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March 21, 2016 - 2:24pm
Tamilselvan subramani

Hi,

Whether LTDC is DMA or not.

ltdc is basically working as blocking or non blocking.

beacuse in one of you document( Eye Catching Made Easy By Francis Lamotte)

you are mentioned DMA is connected to LCD.

if not there is any DMA which is connected to LCD via SD RAM.

By

Tamilselvan
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March 22, 2016 - 3:55pm
Etienne Cassin

Hi,

The LCD of the Open4 embeds a graphical controller managed by CircleOS with 8bits parallel port. in this architecture, the STM32F429 does not control directly the LCD as a LTDC, the STM32F429 embedded LCD-TFT controller is not used.

Nevertheless, the embedded DMA2D is used to do some graphcal effects and refresh image from external SDRAM to LCD thanks to DMA functionnality.

This is transparent for the application, because it is managed by the CircleOS.

Regards.