I currently have a base block design with AXI DMA. I want to use PYNQ AXI DMA API to send and receive data. But all examples for pynq axi dma starts with downloading a bit file through overlay. I don’t have any additional bit file and my DMA IP is in the base design. How would I use the API to transfer data without having to download bit file.
-Karthick
Hi,
What do you mean by “I currently have a base block design with AXI DMA” ? Do you have a block design that you open with Vivado? Or .bit and .hwh files ?
With which board are you working?
My base design is a block design. I have axi dma core in it. I generate .bit and .hwh files to create a pynq image. I’m currently using Zynq mini ITX board.
https://www.newark.com/avnet/aes-mini-itx-7z100-bas-g/dev-brd-zynq-7000-all-programmable/dp/31AC6108
Hi @Karthick_Ramu,
These files are your overlay. You should provide the *.bit file to the Overlay class to download it.
Then you can use ip_dict to inspect the memory mapped IP in your design.
Mario
Loading the .bit is already part of bootup sequence. Are you saying I have reload the same .bit file through overlay class?
-Karthick
In that case you can set the download=False in the Overlay class.
Does the response of marioruiz answer your question “How would I use the API to transfer data without having to download bit file?” ?
