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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 analog_swig as analog
import math
class test_fmdet_cf(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_fmdet_cf_001(self):
# Test set/gets
fh1 = 10
fh2 = 20
fl1 = 1
fl2 = 2
scale1 = 3
scale2 = 4
op = analog.fmdet_cf(1, fl1, fh1, scale1)
op.set_freq_range(fl2, fh2)
lo = op.freq_low()
hi = op.freq_high()
f = op.freq()
self.assertEqual(fl2, lo)
self.assertEqual(fh2, hi)
self.assertEqual(0, f)
op.set_scale(scale2)
s = op.scale()
b = op.bias()
eb = 0.5*scale2*(hi + lo) / (hi - lo);
self.assertEqual(scale2, s)
self.assertAlmostEqual(eb, b)
# FIXME: This passes QA, but the it's only based off what the
# block is saying, not what the values should actually be.
def est_fmdet_cf_002(self):
N = 100
src = gr.sig_source_c(1, gr.GR_SIN_WAVE, 0.2, 1)
head = gr.head(gr.sizeof_gr_complex, N)
op = analog.fmdet_cf(1, 0.1, 0.3, 0.1)
dst = gr.vector_sink_f()
self.tb.connect(src, head, op)
self.tb.connect(op, dst)
self.tb.run()
result_data = dst.data()[4:N]
expected_result = (100-4)*[-0.21755,]
self.assertFloatTuplesAlmostEqual(expected_result, result_data, 4)
if __name__ == '__main__':
gr_unittest.run(test_fmdet_cf, "test_fmdet_cf.xml")
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