Tutorial on Using AXI Stream Interfaces for Verification

[mohannithin]

Hi Alex,

I have installed and used your coctb extension for AXI Streams. However, I'm unsure if i'm using it properly. I'm trying to verify a block which provides a result after some calculation is performed. During the calculation the DUT outputs a stream of vectors. In this scenario i have leveraged your libraries and wrote a sample cocotb test as follows (Pseudocode):

while bin_index < len(list_read):
if (calculation complete) and (bin_index <= len(list_read)-1):
frame = AxiStreamFrame(list_read[bin_index], tuser=1)
await axis_source.send(frame)
await axis_source.wait()

        rx_frame = await axis_sink.recv()
        received_data = rx_frame.tdata
        cocotb.log.info(f'received_data = {received_data}')  
      
        if no ready signal detected:
            await Timer(1, units="ns")  
        else ready signal detected:
            bin_index +=1  
                          
    elif (calculation is in progress) and (bin_index < len(list_read)-1):           
        frame = AxiStreamFrame(list_read[bin_index], tuser=0) 
        await axis_source.send(frame)
        await axis_source.wait()

        rx_frame = await axis_sink.recv()
        received_data = rx_frame.tdata
        cocotb.log.info(f'received_data = {received_data}')  

       if no ready signal detected:
            await Timer(1, units="ns")  
        else ready signal detected:
            bin_index +=1  

The problem that i'm facing is that the only a single element from list_read list is being sent repetitively instead of going through the whole list. Please let me know your thoughts. Any suggestion on this highly appreciated.
Thank you for your time and consideration.

Best,
NM