[Discuss-gnuradio] problem with qa_atsc.py and gr.file_sink

[Samuel Lopez Garcia]

Hi,

I am working with the code: qa_atsc.py, and I would like to save in a file the values from the outputs of the components. For example, in the case of trellis encoder. I have written:

1) This class gets the values from the structure of Trellis Encoder:

class vector_sink_ts_trellis(gr.hier_block2):
  
    def __init__(self):
      

        v3s = gr.vector_to_stream(gr.sizeof_char, atsc.sizeof_atsc_data_segment)
       

        self.sink = gr.vector_sink_b()
    gr.hier_block2.__init__(self, "vector_sink_ts_trellis",
                v3s.input_signature(),
                gr.io_signature(0, 0, 0))
        self.connect(self, v3s, self.sink)

    def data(self):
      
        return self.sink.data()   

2) Inside, def test_loopback_03(self), I have added:

    trellis = atsc.trellis_encoder()  %This line is in the original code.
       
    trellis_data = vector_sink_ts_trellis()
       
    self.tb.connect(src, rand, rs_enc,inter,trellis, trellis_data)
    self.tb.run ()
    int_data = trellis_data.data ()[((interleaver_delay)*atsc.sizeof_atsc_data_segment):len(trellis_data.data())]  
 
    output_trellis = gr.file_sink(gr.sizeof_char, "/pathname/output_trellis.dat")
    self.tb.connect (int_data,output_trellis)
    self.tb.run ()



Thanks!

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