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I've tried compiling the included ticker example with the STemWin_HelloWorld project included in STM32CubeF7. Functionally, it works OK but the draws seem to be corrupted.

Take a look at the video I've uploaded onto YouTube:

I suspect it as something to do with the configuration of the memory but I cannot be sure. This was compiled using SW4STM32.

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Answer is taken from the ST forum here.

Turns out you have to disable caching by commenting out the line in the main function:

CPU_CACHE_Enable();
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