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#!/usr/bin/env python
#
# Copyright 2012,2013 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
#
from gnuradio import gr, gr_unittest, digital, blocks
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([chr(x + ord('0')) for x in L])
class test_framer_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 = b'A'
rcvd_pktq = gr.msg_queue()
src = blocks.vector_source_b(src_data)
correlator = digital.correlate_access_code_bb(access_code, 0)
framer_sink = digital.framer_sink_1(rcvd_pktq)
vsnk = blocks.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 = b'HI'
rcvd_pktq = gr.msg_queue()
src = blocks.vector_source_b(src_data)
correlator = digital.correlate_access_code_bb(access_code, 0)
framer_sink = digital.framer_sink_1(rcvd_pktq)
vsnk = blocks.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_framer_sink)
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