How do you pad zeros to a discrete element-based input?

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Daniel Yang
Daniel Yang 2017-9-4
编辑： Kiran Kintali 2017-9-8
Hello, For my Simulink code, I am attempting to pad my input data with zeroes. The format should be as follows:
0000000data0000000data...
However, the data is not taken in by frame, and I cannot convert it since I want to use HDL generation. How is this achieved?

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Kiran Kintali
Kiran Kintali 2017-9-8
编辑：Kiran Kintali 2017-9-8
you may want to try using bitconcat function supported by HDLCoder.
z = fi(0, 0,7,0); % create 7-bit zero word
y = bitconcat(z,u,z) % u in the input word in fixed-point format

更多回答（1 个）

Bharath Venkataraman
If your input data is a frame, you can pad zeros and then use the To Sample block for the HDL input.
If you are dealing with samples, I suggest using a counter block followed by a switch block. When the counter is < specified length, pass in zeroes, otherwise send in the data.
  1 个评论
Daniel Yang
Daniel Yang 2017-9-4
Can you provide a more tangible explanation for method 1? It is possible to force the input data as a frame, but in order to use the data for HDL code, it needs to be unbuffered, rather than simply converted to the sample mode, right?

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