Problem with qa_atsc.py and gr.file_sink

GNU Radio
1

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()

  1. 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!