Repeated DMA

[DK2]

Hi,

I'm using i.MXRT1170.

I want to execute DMA transfer repeatedly and infinitely without CPU intervention.

I tried scatter/gather function but the submitted TCDs run only once and then exits.

For example, if TCD0 and TCD1 are submitted, TCD0 and TCD1 will be executed only once and then finished.

My hope is to run TCD0 again after TCD1 is executed without CPU intervention.

Is this possible ?

best regards.

[jingpan]

Hi @DK2 ,

I think you can let DLAST_SGA point to each other.

Regards,

Jing