DMA transfer color data in external sram to LCD interface

[redstone8415]

a F407 developer board in hand, it don't fit to touchGFX project, No OS, think to use DMA rise color data send speed,
color data in external sram be  to send LCD interface, a lots of  trying, lost! 
DMA poll amd interrupt mode had test!
for guiding

[JohanAstrup]

Hello @redstone8415.

It is difficult to assist you based on the post. Could you please provide more details on your setup and elaborate on what issue you are facing?

Is it correctly understood that you are using the STM32F407G-DISC1? Which display have you connected to it, and through which interface?

Best regards,
Johan

[redstone8415 · Accepted solution]

thank you a lot, had give up, because DMA don't fit transfer data from external sram to LCD Interface! made a lots of trying!

[JohanAstrup]

From your description, I assume that you are using a display with embedded GRAM - is that correct?

If this is the case, you can split the transfer into smaller transfers or run the DMA in linked-list mode. You can e.g. refer to the NUCLEO-U575ZI + RVA35HI TBS available in TouchGFX Designer for an example of how to split the transfer.

Best regards,
Johan