Customizing Waveform Transmission Using DAC Channel: Is AXI DMA Required?

[joe052790]

Device: RFSoC 4x2 Kit
PYNQ Version: v3.0.1

I want to customize the waveform and use the DAC channel for transmission. Can I achieve this with just the base.bit file, or do I need to add the AXI DMA module in Vivado?

[matthew]

Hi,
Did you read this previous request? [RF SoC 4x2] How to send complexes from a board to another via the analog converters?

[joe052790]

I saw you doing something similar to me. I’m not sure if your project was successful?

[RF SoC 4X2] DMA invalid address

Hi Everyone, I want to send a stream of complexes to another RF SoC 4x2 via analog waves. To do so, I want to send these complexes via the DAC port. I checked the notebook about RF converters: (https://github.com/Xilinx/RFSoC-PYNQ/blob/master/boards/RFSoC4x2/base/notebooks/rfdc/01_rf_dataconverter_introduction.ipynb) But this notebook only configures the career signal, not the message signal. Thus, I added a DMA block in read-only mode to the base Overlay. First, I know that the PS is linked …

[matthew]

It is hard to use the DAC channel for custom signal generation. I do not have an architecture to propose. You would have to adapt the Vivado block design provided by AMD, and maybe create new IP blocks.