Mixed image on screen

[MHaji.1]

Hi,

I have a custom board with STM32H743 and working on a project by TouchGFX 4.24. When the device power on or reset, some times I have a mixed image including numbers, pictures and ..., which I attached the image... and some times every thing is Ok after reset or power on. I have another project by TouchGFX on this board, which it always works fine.

Please help me with this, thanks.

[MHaji.1]

I should add, the main difference between program with distorted  program and the correct one is: distorted program GUI is imported from old version of it from TouchGFX Designer... Is there any problem with this?

BR 

[Andrew Neil]

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@MHaji.1 wrote:

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Please post the corresponding image of what the screen should look like.

Note that you can paste the image into the post - where we can see it - rather than attaching it (where we can't).

[MHaji.1]

Hi Andrew,

Thank you for reply.

As you see in the picture, The numbers are readable and the picture is correct, but in last one all screen is distorted.

Thanks

[Andrew Neil]

Could this be uninitialised data?

ie, in your first case, the values are "junk", and this corrupts the display ?

 

PS:

especially if the data is passed via pointers, and it's the pointers that are uninitialised

[mƎALLEm]

Hello,

You said:

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@MHaji.1 wrote:

I have another project by TouchGFX on this board, which it always works fine.

 

Is it working on the same MCU part number i.e. STM32H743?

[MHaji.1]

Hello, 

Thanks for reply,

Yes, The part numbers are the same.

[mƎALLEm]

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@MHaji.1 wrote:

Yes, The part numbers are the same.

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So make a diff with the projects!