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    knight@ubuntu-armhf:~/Documents/bladeRF/python/atsc$ python atsc-blade-usb2-works-with-adventure-club.py ~/ramdisk/advatsc.ts
    Using Volk machine: generic
    gr-osmosdr v0.1.0-70-gcc083037 (0.1.1git) gnuradio 3.7.1
    built-in sink types: bladerf
    [bladeRF source] Using nuand LLC bladeRF #0 SN a380...a17a FW v1.6.1 FPGA v0.0.3
    [WARNING] Loss of precision in reducing fraction from 1230769232/1993006993 to 615384616/996503496
    python: /home/knight/sandbox/gnuradio-builds/gnuradio-3.7.1/build/gr-digital/lib/chunks_to_symbols_bc_impl.cc:71: virtual int gr::digital::chunks_to_symbols_bc_impl::work(int, gr_vector_const_void_star&, gr_vector_void_star&): Assertion `((unsigned int)in[i]*d_D+d_D) <= d_symbol_table.size()' failed.
    Aborted
     

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    knight@dev-wks-24lx13:~/Documents/bladeRF/python/atsc$ python atsc-blade-usb2-works-with-adventure-club.py ~/Videos/advatsc.ts
    Using Volk machine: avx_64_mmx
    gr-osmosdr v0.1.0-70-gcc083037 (0.1.1git) gnuradio 3.7.1
    built-in sink types: bladerf
    [bladeRF source] Using nuand LLC bladeRF #0 SN a380...a17a FW v1.6.1 FPGA v0.0.3
    [WARNING] Loss of precision in reducing fraction from 1230769232/1993006993 to 615384616/996503496
    python: /home/knight/sandbox/gnuradio-builds/gnuradio-old/build/gr-digital/lib/chunks_to_symbols_bc_impl.cc:71: virtual int gr::digital::chunks_to_symbols_bc_impl::work(int, gr_vector_const_void_star&, gr_vector_void_star&): Assertion `((unsigned int)in[i]*d_D+d_D) <= d_symbol_table.size()' failed.
    Aborted (core dumped)
     

Code: Select all

#!/usr/bin/env /usr/bin/python

# Copyright 2013 Clayton Smith ([email protected])
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from gnuradio import gr, atsc, blocks, analog, filter
from gnuradio.filter import firdes
from grc_gnuradio import blks2 as grc_blks2
import sys, os
import osmosdr

def main(args):
    nargs = len(args)
    if nargs == 1:
        infile  = args[0]
        outfile = None
    elif nargs == 2:
        infile  = args[0]
        outfile  = args[1]
    else:
        sys.stderr.write("Usage: atsc-blade-usb2.py input_file [output_file]\n");
        sys.exit(1)

    symbol_rate = 4500000.0 / 286 * 684
    pilot_freq = 309441
    center_freq = 429000000
    txvga1_gain = -6
    txvga2_gain = 9

    tb = gr.top_block()

    src = blocks.file_source(gr.sizeof_char, infile, True)

    pad = atsc.pad()
    rand = atsc.randomizer()
    rs_enc = atsc.rs_encoder()
    inter = atsc.interleaver()
    trell = atsc.trellis_encoder()
    fsm = atsc.field_sync_mux()

    v2s = blocks.vector_to_stream(gr.sizeof_char, 1024)
    minn = blocks.keep_m_in_n(gr.sizeof_char, 832, 1024, 4)
    b2f = blocks.uchar_to_float()
    mul = blocks.multiply_const_vff((2, ))
    add = blocks.add_const_vff((-7 + 1.25, ))
    zero = analog.sig_source_f(0, analog.GR_CONST_WAVE, 0, 0, 0)
    f2c = blocks.float_to_complex(1)
    offset = analog.sig_source_c(symbol_rate, analog.GR_COS_WAVE, -3000000 + pilot_freq, 1.1, 0)
    mix = blocks.multiply_vcc(1)
    rrc_taps = firdes.root_raised_cosine(0.1, symbol_rate*2, symbol_rate/2, 0.1152, 200)
    rrc = filter.rational_resampler_ccc(interpolation=2, decimation=3, taps=rrc_taps, fractional_bw=None, )

    out = osmosdr.sink(args="bladerf=0,buffers=128,buflen=32768")
    out.set_sample_rate(symbol_rate * 2 / 3)
    out.set_center_freq(center_freq, 0)
    out.set_freq_corr(0, 0)
    out.set_gain(txvga2_gain, 0)
    out.set_bb_gain(txvga1_gain, 0)
    out.set_bandwidth(6000000, 0)

    tb.connect(src, pad, rand, rs_enc, inter, trell, fsm, v2s, minn, b2f, mul, add)
    tb.connect((add, 0), (f2c, 0))
    tb.connect((zero, 0), (f2c, 1))
    tb.connect((f2c, 0), (mix, 0))
    tb.connect((offset, 0), (mix, 1))
    tb.connect(mix, rrc, out)

    if outfile:
        dst = blocks.file_sink(gr.sizeof_gr_complex, outfile)
        tb.connect(rrc, dst)

    tb.run()


if __name__ == '__main__':
    main(sys.argv[1:])