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#!/usr/bin/env python
#
# Copyright 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, blocks
import math
def sig_source_f(samp_rate, freq, amp, N):
t = [float(x) / samp_rate for x in range(N)]
y = [amp * math.cos(2. * math.pi * freq * x) for x in t]
return y
def sig_source_c(samp_rate, freq, amp, N):
t = [float(x) / samp_rate for x in range(N)]
y = [math.cos(2. * math.pi * freq * x) +
1j * math.sin(2. * math.pi * freq * x) for x in t]
return y
class test_vco(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_001(self):
src_data = 200 * [0, ] + 200 * [0.5, ] + 200 * [1, ]
expected_result = 200 * [1, ] + \
sig_source_f(1, 0.125, 1, 200) + \
sig_source_f(1, 0.25, 1, 200)
src = blocks.vector_source_f(src_data)
op = blocks.vco_f(1, math.pi / 2.0, 1)
dst = blocks.vector_sink_f()
self.tb.connect(src, op, dst)
self.tb.run()
result_data = dst.data()
self.assertFloatTuplesAlmostEqual(expected_result, result_data, 5)
def test_002(self):
src_data = 200 * [0, ] + 200 * [0.5, ] + 200 * [1, ]
expected_result = 200 * [1, ] + \
sig_source_c(1, 0.125, 1, 200) + \
sig_source_c(1, 0.25, 1, 200)
src = blocks.vector_source_f(src_data)
op = blocks.vco_c(1, math.pi / 2.0, 1)
dst = blocks.vector_sink_c()
self.tb.connect(src, op, dst)
self.tb.run()
result_data = dst.data()
self.assertComplexTuplesAlmostEqual(expected_result, result_data, 5)
if __name__ == '__main__':
gr_unittest.run(test_vco)
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