Implementing Convolution beginner questions

You can’t use the hls:stream type for this. You can see the workaround to use a custom struct and have a “last”.
In the code you copied, this is the axis_t type which is this (in header file):

struct axis_t {
ap_uint<24> data;
ap_int<1> last;

If you call the variable in the struct last it will be recognized as the AXI sideband TLAST signal.

It gets synthesized with this:
#pragma HLS INTERFACE axis port=src //depth=384*288 // Added depth for C/RTL cosimulation

There is more than one way to code this so you may see different variations in different examples.


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