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ago in Platform Packages by

Hi,

I am running a simple GUI using code from established projects on the STM32F769-Disco and am getting chopping (see picture) on boot and when scrolling a vertical list.

I have tried double buffer but no improvement.

Any ideas? This is using V11.00.01.

Thanks

Phil

 

1 Answer

0 votes
ago by
Hi Phil,

this seems to me that some display settings are not correctly. Is the chopping statically or somehow jittering or different after each update?

Just to have a common understanding - please try the following:

You are using theSTM32F769-Discovery board and the suitable Build Environment, correct?

Build HelloWorld and some of the other provided examples from the Build Environment - are they working correctly?

Now you can generate the code of your existing GUI project (ScreenSize = 800x480) into the folder /GeneratedCode and build the binary as the other examples. Then the chopping appears?

Best regards,

Manfred
ago by
Hi Manfred,

I am using the Build Environment zip files from the our get.embedded... ftp area, the only difference is I have applied our RGB888 files.

The examples build and run fine (Paper cutter and washing machine) and I am doing exactly what you decribed above, I am building into the same Generated Code folder as the demos and building and programming the same way.

It seems the vertical list is most affected.

Thanks

Phil
ago by
Hi Phil,

are there any messages on the console?

Does the jitter appears only sometimes? Then it seems to be some buffer underflow,

Best regards,

Manfred.
ago by
Hi Manfred,

Yes, the jitter is not consistent, and self recovers on the next change.

No errors are shown on the debug unfortunately.

Best Regards

Phil
ago by
Hi Phil,

I can reproduce the same jitter effect by using the WashingMachine example and changing the ColorFormat to RGB888. Further investigations are ongoing. I keep you informed...

How urgent is this issue for you? Can you continue with RGB565 instead?

Thanks for reporting the issue.

Best regards,

Manfred.

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