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With a strange error display when I use input capture

Thomas8607
Senior

Hello!  

My project is almost finished, but I had a little problem. On the dashboard, I can optionally read the speed and coolanz water temperature from the can bus or with sensors (vr sensor, ntc). In the case of the can bus, the display works properly.  

If input capture it is used, the image breaks up at intervals.  

What could be the problem, where should I look for the error? Is the input capture callback long? 

 

 It would certainly be good with dma, but I couldn't do it with it, none of the input capture dma example programs work.  

The devices used: stm32h753, qspi, sdram, ltdc rgb888

Here is the video with the fail:

Ltdc fail 

 Thank you if someone can help!

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