diff options
| author | Tom Rondeau <trondeau@vt.edu> | 2012-10-31 15:55:13 -0400 |
|---|---|---|
| committer | Tom Rondeau <trondeau@vt.edu> | 2012-10-31 15:55:13 -0400 |
| commit | 21beb2a5dc1e589873b49836190c3caf354c86f7 (patch) | |
| tree | bfdee603948432988a563bd671660a3ec8622cd5 /gr-analog/python/qa_quadrature_demod.py | |
| parent | 9dbc8b75787e4a6d493251826c0436f9af167a6d (diff) | |
analog: adding quadrature_demod_cf to gr-analog with QA and GRC.
Diffstat (limited to 'gr-analog/python/qa_quadrature_demod.py')
| -rwxr-xr-x | gr-analog/python/qa_quadrature_demod.py | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/gr-analog/python/qa_quadrature_demod.py b/gr-analog/python/qa_quadrature_demod.py new file mode 100755 index 0000000000..e38ea72a7d --- /dev/null +++ b/gr-analog/python/qa_quadrature_demod.py @@ -0,0 +1,63 @@ +#!/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 cmath + +class test_quadrature_demod(gr_unittest.TestCase): + + def setUp(self): + self.tb = gr.top_block() + + def tearDown(self): + self.tb = None + + def test_quad_demod_001(self): + f = 1000.0 + fs = 8000.0 + + src_data = [] + for i in xrange(200): + ti = i/fs + src_data.append(cmath.exp(2j*cmath.pi*f*ti)) + + # f/fs is a quarter turn per sample. + # Set the gain based on this to get 1 out. + gain = 1.0/(cmath.pi/4) + + expected_result = [0,] + 199*[1.0] + + src = gr.vector_source_c(src_data) + op = analog.quadrature_demod_cf(gain) + dst = gr.vector_sink_f() + + self.tb.connect(src, op) + self.tb.connect(op, dst) + self.tb.run() + + result_data = dst.data() + self.assertComplexTuplesAlmostEqual(expected_result, result_data, 5) + +if __name__ == '__main__': + gr_unittest.run(test_quadrature_demod, "test_quadrature_demod.xml") + |