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STM32 FMC Display

Question asked by vigelette.george.002 on Jul 12, 2016
Latest reply on Jul 12, 2016 by vigelette.george.002
Hi everyone, I have a display hooked up to an STM32F767 via the FMC and all is working properly.  When I try to use DMA2D the DMA2D will only transfer the first 64K of data.  There is no error generated, it appears to be successful and the first 64K of the image looks fine.  Using buffers smaller than 64K work flawlessly.  Has anyone found a way to DMA a full screen buffer in one DMA2D pass.  This seems to work when using the LTDC controller, but I have had no luck getting it to work with a FMC 8080 interface.  I have tried it on an ssd1289 display and a raio8875 and both have this 64k boundary issue.  The only way I have been able to get the data over using DMA2D is to transfer 64K at a time.  

Any help would be greatly appreciated.

Thank You.

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