DMA transfers using double buffers from external SRAM devices

[forst]

Hello

​I am considering a double buffer DMA transfer using FMC

I want to DMA the data from the external SRAM device to the internal RAM using double buffering

How do I configure STMCubeMX?

Best Regards

[waclawek.jan]

Which STM32?

DMA does not "know" whether a memory is internal or external, so you set it up as for any other memory-to-memory transfer.

Of course the DMA module has to have a path to FMC for this to work at all, this depends on which DMA you intend to use and in which STM32.

JW

[TDK]

Go into DMA and a a MemToMem request.

In your code, you will need to specify the locations of each buffer, length in the call to HAL_DMAEx_MultiBufferStart.

[forst]

Hello,

My device is STM32H743

Is there an example of a DMA using double buffering between external and internal memory?

Best Regards