Need help with XDMA Stream

[notooth]

Can anyone tell me what is wrong with this block design? It is supposed to return the multiplication of 2 float numbers, but I always get 0.

[asmi]

I see nothing wrong because I see no block design

[notooth]

I have just attached the picture of the block design.

[asmi]

That block is Ultrascale+ only, so I can't help with that because I have no experience with it. I can only offer some general suggestions like using ILA to see what is going on.

[notooth]

I tried to do the following with ILA:
In the Hardware window, I clicked Run Trigger Immediate
In a terminal, I run a command to send 256-bit data to /dev/xdma0_h2c_0
In the Waveform window, I clicked Run trigger immediate for this ILA core
But I did not see any change of xdma_0_m_axis_h2c_tdata_0 sinal. What did I do wrong?

[Someone]

Run Trigger Immediate
....
What did I do wrong?

Take some steps back and learn the parts one at a time.
https://docs.xilinx.com/r/en-US/ug908-vivado-programming-debugging/Running-the-Trigger

Test things in small parts rather than asking "why doesn't this big complex thing that no-one else has ever built before not work the way I expect it to".

[notooth]

Take some steps back and learn the parts one at a time.
https://docs.xilinx.com/r/en-US/ug908-vivado-programming-debugging/Running-the-Trigger

That was exactly the document that I learned, but I have not got the idea how to capture data of m_axis_h2c_tdata_0 interface when I wrote data to /dev/xdma0_h2c_0.

[Someone]

Take some steps back and learn the parts one at a time.
https://docs.xilinx.com/r/en-US/ug908-vivado-programming-debugging/Running-the-Trigger

That was exactly the document that I learned, but I have not got the idea how to capture data of m_axis_h2c_tdata_0 interface when I wrote data to /dev/xdma0_h2c_0.

If you can't take what that document describes and figure out how to capture a write, then you need to go back further. What is a write? what does it look like in simulation? what should it look like on the logic analyser?