RT106x USB DMA Scatter Gather

nikelect

Good evening,

I am working with the MIMXRT1060-EVKB development board and am trying to implement USB (Device) Bulk data transfer using DMA with scatter-gather. While looking for relevant examples, I couldn’t find anything specific to this use case.

Additionally, I noticed that enabling FSL_FEATURE_MEMORY_HAS_ADDRESS_OFFSET is not possible, as my SDK does not contain the fsl_memory.h file.

Any guidance or examples would be greatly appreciated.

Thank you in advance for your help!

Best regards,

nikelect

Hi @EdwinHz , thanks for your reply.

I have successfully performed several DMA transfers, including peripheral-to-memory and memory-to-peripheral transfers with UART, SPI, and I2S. However, the current issue lies specifically with USB. Which USB TX register should the DMA write to?

Thanks

View solution in original post

EdwinHz

Hi @nikelect,

It does not implement the USB part, but we do have a scatter/gather example code on the RT1060-EVKB SDK by the name "edma_scatter_gather". Please take a look at that example code for exemplification on how to use the scatter/gather feature of the edma, as it is a good starting point for your application.

BR,
Edwin.

nikelect

Hi @EdwinHz , thanks for your reply.

I have successfully performed several DMA transfers, including peripheral-to-memory and memory-to-peripheral transfers with UART, SPI, and I2S. However, the current issue lies specifically with USB. Which USB TX register should the DMA write to?

Thanks