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#!/usr/bin/env python
#
# Copyright 2012 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# GNU Radio 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, or (at your option)
# any later version.
#
# GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
from gnuradio import gr, gr_unittest
import digital_swig as digital
default_access_code = '\xAC\xDD\xA4\xE2\xF2\x8C\x20\xFC'
def string_to_1_0_list(s):
r = []
for ch in s:
x = ord(ch)
for i in range(8):
t = (x >> i) & 0x1
r.append(t)
return r
def to_1_0_string(L):
return ''.join(map(lambda x: chr(x + ord('0')), L))
class test_framker_sink(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_001(self):
code = (1, 1, 0, 1)
access_code = to_1_0_string(code)
header = tuple(2*[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1]) # len=1
pad = (0,) * 100
src_data = code + header + (0,1,0,0,0,0,0,1) + pad
expected_data = 'A'
rcvd_pktq = gr.msg_queue()
src = gr.vector_source_b(src_data)
correlator = digital.correlate_access_code_bb(access_code, 0)
framer_sink = digital.framer_sink_1(rcvd_pktq)
vsnk = gr.vector_sink_b()
self.tb.connect(src, correlator, framer_sink)
self.tb.connect(correlator, vsnk)
self.tb.run ()
result_data = rcvd_pktq.delete_head()
result_data = result_data.to_string()
self.assertEqual (expected_data, result_data)
def test_002(self):
code = tuple(string_to_1_0_list(default_access_code))
access_code = to_1_0_string(code)
header = tuple(2*[0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0]) # len=2
pad = (0,) * 100
src_data = code + header + (0,1,0,0,1,0,0,0) + (0,1,0,0,1,0,0,1) + pad
expected_data = 'HI'
rcvd_pktq = gr.msg_queue()
src = gr.vector_source_b(src_data)
correlator = digital.correlate_access_code_bb(access_code, 0)
framer_sink = digital.framer_sink_1(rcvd_pktq)
vsnk = gr.vector_sink_b()
self.tb.connect(src, correlator, framer_sink)
self.tb.connect(correlator, vsnk)
self.tb.run ()
result_data = rcvd_pktq.delete_head()
result_data = result_data.to_string()
self.assertEqual (expected_data, result_data)
if __name__ == '__main__':
gr_unittest.run(test_framker_sink, "test_framker_sink.xml")
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