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MSale.1
MSale.1
Senior
April 1, 2020
Question

Is it possible to convert with DMA2D on STM32H743 YCBCR from the DCMI to RGB565 ?

  • April 1, 2020
  • 7 replies
  • 1559 views

I have question related to the graphic engine DMA2D in the STM32H743. Can it convert progressive scan YCBCR from the DCMI to RGB 565. this is very important for any Application that needs to save video at high resolution with 30fps?

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7 replies

berendi
berendi
Principal
April 1, 2020

The incoming YCbCr data format is documented in section 18.4.12 YCbCr support of the reference manual. If the ordering is different, you have to rearrange it beforehand by a separate pass, maybe through DMA2D or MDMA.

MSale.1
MSale.1Author
Senior
April 1, 2020

@berendi​  I read it before but it also mention that it work with the output of the hardware JPEG decoder which is 8x8 block. so is it ok to use the same configuration with the output from the camera?

Thanks in advance

Imen.D
ST Technical Moderator
April 1, 2020

Hello,

I recommend you this AN5020: Digital Camera Interface (DCMI) on STM32 MCUs that will help you in your configuration.

Best Regards,

Imen

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MSale.1
MSale.1Author
Senior
April 1, 2020

@Imen DAHMEN​ 

Hello,

Thanks for the answer.i just have asked specific question because i could not found any information about it and with software conversion it will take time which will affect the frame rate. i hope i got direct answer from you to my question.

Regards

Mahmoud

Imen.D
ST Technical Moderator
April 1, 2020

Yes, it is possible to convert with DMA2D on STM32H743 YCbCr to RGB565

In order to give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question. Thanks
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