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#!/usr/bin/env python
#
# Copyright 2004,2007,2010,2012 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_sig_source(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_const_f(self):
tb = self.tb
expected_result = (1.5, 1.5, 1.5, 1.5, 1.5, 1.5, 1.5, 1.5, 1.5, 1.5)
src1 = analog.sig_source_f(1e6, analog.GR_CONST_WAVE, 0, 1.5)
op = gr.head(gr.sizeof_float, 10)
dst1 = gr.vector_sink_f()
tb.connect(src1, op)
tb.connect(op, dst1)
tb.run()
dst_data = dst1.data()
self.assertEqual(expected_result, dst_data)
def test_const_i(self):
tb = self.tb
expected_result = (1, 1, 1, 1)
src1 = analog.sig_source_i(1e6, analog.GR_CONST_WAVE, 0, 1)
op = gr.head(gr.sizeof_int, 4)
dst1 = gr.vector_sink_i()
tb.connect(src1, op)
tb.connect(op, dst1)
tb.run()
dst_data = dst1.data()
self.assertEqual(expected_result, dst_data)
def test_sine_f(self):
tb = self.tb
sqrt2 = math.sqrt(2) / 2
expected_result = (0, sqrt2, 1, sqrt2, 0, -sqrt2, -1, -sqrt2, 0)
src1 = analog.sig_source_f(8, analog.GR_SIN_WAVE, 1.0, 1.0)
op = gr.head(gr.sizeof_float, 9)
dst1 = gr.vector_sink_f()
tb.connect(src1, op)
tb.connect(op, dst1)
tb.run()
dst_data = dst1.data()
self.assertFloatTuplesAlmostEqual(expected_result, dst_data, 5)
def test_cosine_f(self):
tb = self.tb
sqrt2 = math.sqrt(2) / 2
expected_result = (1, sqrt2, 0, -sqrt2, -1, -sqrt2, 0, sqrt2, 1)
src1 = analog.sig_source_f(8, analog.GR_COS_WAVE, 1.0, 1.0)
op = gr.head(gr.sizeof_float, 9)
dst1 = gr.vector_sink_f()
tb.connect(src1, op)
tb.connect(op, dst1)
tb.run()
dst_data = dst1.data()
self.assertFloatTuplesAlmostEqual(expected_result, dst_data, 5)
def test_sqr_c(self):
tb = self.tb #arg6 is a bit before -PI/2
expected_result = (1j, 1j, 0, 0, 1, 1, 1+0j, 1+1j, 1j)
src1 = analog.sig_source_c(8, analog.GR_SQR_WAVE, 1.0, 1.0)
op = gr.head(gr.sizeof_gr_complex, 9)
dst1 = gr.vector_sink_c()
tb.connect(src1, op)
tb.connect(op, dst1)
tb.run()
dst_data = dst1.data()
self.assertEqual(expected_result, dst_data)
def test_tri_c(self):
tb = self.tb
expected_result = (1+.5j, .75+.75j, .5+1j, .25+.75j, 0+.5j,
.25+.25j, .5+0j, .75+.25j, 1+.5j)
src1 = analog.sig_source_c(8, analog.GR_TRI_WAVE, 1.0, 1.0)
op = gr.head(gr.sizeof_gr_complex, 9)
dst1 = gr.vector_sink_c()
tb.connect(src1, op)
tb.connect(op, dst1)
tb.run()
dst_data = dst1.data()
self.assertComplexTuplesAlmostEqual(expected_result, dst_data, 5)
def test_saw_c(self):
tb = self.tb
expected_result = (.5+.25j, .625+.375j, .75+.5j, .875+.625j,
0+.75j, .125+.875j, .25+1j, .375+.125j, .5+.25j)
src1 = analog.sig_source_c(8, analog.GR_SAW_WAVE, 1.0, 1.0)
op = gr.head(gr.sizeof_gr_complex, 9)
dst1 = gr.vector_sink_c()
tb.connect(src1, op)
tb.connect(op, dst1)
tb.run()
dst_data = dst1.data()
self.assertComplexTuplesAlmostEqual(expected_result, dst_data, 5)
def test_sqr_f(self):
tb = self.tb
expected_result = (0, 0, 0, 0, 1, 1, 1, 1, 0)
src1 = analog.sig_source_f(8, analog.GR_SQR_WAVE, 1.0, 1.0)
op = gr.head(gr.sizeof_float, 9)
dst1 = gr.vector_sink_f()
tb.connect(src1, op)
tb.connect(op, dst1)
tb.run()
dst_data = dst1.data()
self.assertEqual(expected_result, dst_data)
def test_tri_f(self):
tb = self.tb
expected_result = (1, .75, .5, .25, 0, .25, .5, .75, 1)
src1 = analog.sig_source_f(8, analog.GR_TRI_WAVE, 1.0, 1.0)
op = gr.head(gr.sizeof_float, 9)
dst1 = gr.vector_sink_f()
tb.connect(src1, op)
tb.connect(op, dst1)
tb.run()
dst_data = dst1.data()
self.assertFloatTuplesAlmostEqual(expected_result, dst_data, 5)
def test_saw_f(self):
tb = self.tb
expected_result = (.5, .625, .75, .875, 0, .125, .25, .375, .5)
src1 = analog.sig_source_f(8, analog.GR_SAW_WAVE, 1.0, 1.0)
op = gr.head(gr.sizeof_float, 9)
dst1 = gr.vector_sink_f()
tb.connect(src1, op)
tb.connect(op, dst1)
tb.run()
dst_data = dst1.data()
self.assertFloatTuplesAlmostEqual(expected_result, dst_data, 5)
if __name__ == '__main__':
gr_unittest.run(test_sig_source, "test_sig_source.xml")
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