hi, i am trying to model in simulink where i am trying to give input from the workspace . i do receive the error in port width or dimensions. my input is about [1 9601] exactly i receive error in delay block. can anyone please help me out with this?

I am trying to simulate in Simulink which supports HDL coder where I am facing the error in port width or dimensions for the input given. buffer blocks are not supported for HDL coding is there any alternative method in Simulink which supports it. i have attached the image of the Simulink project.

[Bharath Venkataraman]

You are trying to feed in the entire 9601x1 to the HDL filter, which wants it coming in one sample at a time. If you put in an unbuffer block after the "To FixPt" block, it will send the values one at a time and the model should work.

[srinivasan ravi]

thank you for your reply sir, It helped me by using the unbuffer block but for hdl code conversion buffer and unbuffer block is not supported. is there any alternative for this block that supports hdl coder?

[Bharath Venkataraman]

For HDL, you cannot supply an entire frame of data, so the expectation will be that you have ports with scalar inputs.

That is why the buffer and unbuffer blocks are not supported.

[srinivasan ravi]

thanks for your immediate reply sir, all my inputs are in vector form to the buffer blocks and still it is not supported.

[Bharath Venkataraman]

The buffer block is not supported because you would never send an entire frame into HDL in one clock. If you send the output of the buffer block to the "Programmable FIR via Registers" subsystem, that subsystem generates HDL.

[srinivasan ravi]

hello sir, i am trying to find the skewness of the output of the fft data ie( i am trying to give abs(fft data) into a matlab function but i ma getting an error that #Inferred size for data 'result_k1' is empty, which is invalid for a Simulink signal# i have attached my code with this can you please guide me with this. function result_k1= tryf(u) %#codegen

x=[]; x=[x;u]; window_width=50; result_k1=[]; for j=1:100 window_m1=x(:,(j:window_width+(j-1))); window_m11=window_m1(:); result_k1(j)=skewness(window_m11);

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