Hello, I’m trying to use dma with vitis hls and pynq os to transfer the data and do some kind of simple adding. My board is ZCU104 board. When I assign input buffer in pynq (jupyter notebook) with allocate for size of smaller than 256, it have no problem. However when I try with larger buffer, it…

Yes but it didn’t solved my problem.

Can you please send a picture of your block design, to see what is connected to the DMA block?

[스크린샷 2024-11-19 085612] Here’s the block design

Hi @ja2021 PYNQ’s allocate() function requires the shape parameter to be a tuple (e.g. allocate(shape=(256,), dtype=np.float32) not allocate(shape=256, dtype=np.float32) as you have in your example). The PynqBuffer class inherits from numpy.ndarray, so its documentation might be useful in explaini…

Hi! I’m stucked with the same problem, and it seems several months have been passed since last time you replied, so I;m wondering whether you have solved this problem, could you please help me?

DMA sendchannel.transfer() and wait() stuck with larger buffer

Support

matthew November 18, 2024, 9:15am 2

Hi,
Did you check this post?

Debugging Common DMA Issues [Part 3]

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DMA sendchannel.transfer() and wait() stuck with larger buffer

Debugging Common DMA Issues [Part 3]

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