Hi
We sincerely apologize for the inconvenience caused by the delay in addressing your Forum queries. Due to an unexpected back-end issue in our system, your Forum cases, along with others, did not get through as intended. As a result, we have a backlog of cases that we are currently working through one by one.
Please be assured that we are doing everything we can to resolve this issue as quickly as possible. However, this process will take some time, and we kindly ask for your patience and understanding during this period. The cases will be attended by AE shortly.
We appreciate your patience and understanding, and we are committed to providing you with the best support possible.
Thank you for your understanding.
Back to your issue, I think the below example design will answer your question on the use of the DMA.
FPGA-to-HPS Bridges Design Example | Intel
You could take a look at the part where the application write and read pattern to the memory in line 628 of example_design.c file
Regards
Jingyang, Teh