About Viony

Viony · 2018-08-16

Hello everyone, The question has already been asked here : https://community.st.com/s/question/0D50X00009XkfEhSAJ/stm32h7-and-ycbcr?t=1534420367411but I don't think the answer is complete.Anyway, I have a PAL camera. Its signal is converted to YCbCr ...

Viony · 2017-10-13

Posted on October 13, 2017 at 14:54Hi everyone !I am struggling with DMA2D configuration (using HAL library) to display anti-aliased fonts. The fonts I have are A4 coded. Every character has its own array. For example, for the exclamation mark :uint...

Viony · 2017-06-30

Posted on June 30, 2017 at 09:52Hi everyone.I was working on a custom STM32F469NIH board for the past two weeks. This morning when I tried to supply for the first time during this day the board to start its program, it didn't. When I connected it to...

Viony · 2018-08-17

I expected to use an ADV7280A from Analog Devices. The nominal output frequency is 27MHz but using the interlace-to-progressive feature, this frequency becomes 54Mhz.Since I have to respect some latency between the input (PAL) and what is displayed, ...

Viony · 2018-08-17

Yeah you are right about the YCbCr 4:2:2 to YCbCr 4:4:4 up-sampling but I am still worried about the time it will involve. In fact, if I undestood well in YCbCr 4:2:2 mode, when the DCMI_DR register is full (32-bit : Cb1 Y1 Cr1 Y2), a DMA request is ...

Viony · 2018-08-17

Thanks for your answers. I guess I have to do the YCbCr to RGB conversion through software.What I am afraid of is if the processor will be fast enough to make the conversion. Regarding this older post :https://community.st.com/s/question/0D50X00009Xk...

Viony · 2017-10-14

Posted on October 14, 2017 at 15:04Thank you for your answer. I managed to make it work. It is almost perfect but not completely yet. I have edited my post (see EDIT 2, it explains the issue I am facing with now with the way DMA2D fetches data).And ...

Viony · 2017-07-04

Posted on July 04, 2017 at 08:57I have manufactured only two custom boards. Both of them worked for more than two weeks each. Both of them are now bricked. Take a look at the reply I gave to @ra hummel.

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Is using DMA2D to convert YCbCr 4:2:2 to ARGB8888 with STM32H7 and DCMI as input possible ?

STM32F4 : DMA2D and Blending operation (font display)

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Re: Is using DMA2D to convert YCbCr 4:2:2 to ARGB8888 with STM32H7 and DCMI as input possible ?

Re: Is using DMA2D to convert YCbCr 4:2:2 to ARGB8888 with STM32H7 and DCMI as input possible ?

Re: Is using DMA2D to convert YCbCr 4:2:2 to ARGB8888 with STM32H7 and DCMI as input possible ?

Re: STM32F4 : DMA2D and Blending operation (font display)

Re: Read Out Protection enabled without any action