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#!/usr/bin/env python3
#
# Copyright 2004, 2007, 2010, 2012, 2013, 2020 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
#
import math
# import pmt
from gnuradio import gr, gr_unittest, analog, blocks, streamops
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.waveform_t.CONSTANT, 0, 1.5)
op = streamops.head(10)
dst1 = blocks.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.waveform_t.CONSTANT, 0, 1)
op = streamops.head(4)
dst1 = blocks.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_const_b(self):
tb = self.tb
expected_result = [1, 1, 1, 1]
src1 = analog.sig_source_b(1e6, analog.waveform_t.CONSTANT, 0, 1)
op = streamops.head(4)
dst1 = blocks.vector_sink_b()
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.waveform_t.SIN, 1.0, 1.0)
op = streamops.head(9)
dst1 = blocks.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_sine_b(self):
tb = self.tb
sqrt2 = math.sqrt(2) / 2
temp_result = [0, sqrt2, 1, sqrt2, 0, -sqrt2, -1, -sqrt2, 0]
amp = 8
expected_result = tuple([int(z * amp) for z in temp_result])
src1 = analog.sig_source_b(8, analog.waveform_t.SIN, 1.0, amp)
op = streamops.head(9)
dst1 = blocks.vector_sink_b()
tb.connect(src1, op)
tb.connect(op, dst1)
tb.run()
dst_data = dst1.data()
# Let the python know we are dealing with signed int behind scenes
dst_data_signed = [b if b < 127 else (256 - b) * -1 for b in dst_data]
self.assertFloatTuplesAlmostEqual(expected_result, dst_data_signed)
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.waveform_t.COS, 1.0, 1.0)
op = streamops.head(9)
dst1 = blocks.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_c(self):
tb = self.tb
sqrt2 = math.sqrt(2) / 2
sqrt2j = 1j * math.sqrt(2) / 2
expected_result = [
1, sqrt2 + sqrt2j, 1j, -sqrt2 + sqrt2j, -1, -sqrt2 - sqrt2j, -1j,
sqrt2 - sqrt2j, 1
]
src1 = analog.sig_source_c(8, analog.waveform_t.COS, 1.0, 1.0)
op = streamops.head(9)
dst1 = blocks.vector_sink_c()
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.waveform_t.SQUARE, 1.0, 1.0)
op = streamops.head(9)
dst1 = blocks.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.waveform_t.TRIANGLE, 1.0, 1.0)
op = streamops.head(9)
dst1 = blocks.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.waveform_t.SAWTOOTH, 1.0, 1.0)
op = streamops.head(9)
dst1 = blocks.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.waveform_t.SQUARE, 1.0, 1.0)
op = streamops.head(9)
dst1 = blocks.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.waveform_t.TRIANGLE, 1.0, 1.0)
op = streamops.head(9)
dst1 = blocks.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.waveform_t.SAWTOOTH, 1.0, 1.0)
op = streamops.head(9)
dst1 = blocks.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_cmd_msg(self):
# src = analog.sig_source_c(8, analog.GR_SIN_WAVE, 1.0, 1.0)
# op = streamops.head(gr.sizeof_gr_complex, 9)
# snk = blocks.vector_sink_c()
# self.tb.connect(src, op, snk)
# self.assertAlmostEqual(src.frequency(), 1.0)
# frequency = 3.0
# amplitude = 10
# offset = -1.0
# src._post(
# pmt.to_pmt('cmd'),
# pmt.to_pmt({
# "freq": frequency,
# "ampl": amplitude,
# "offset": offset
# }))
# self.tb.run()
# self.assertAlmostEqual(src.frequency(), frequency)
# self.assertAlmostEqual(src.amplitude(), amplitude)
# self.assertAlmostEqual(src.offset(), offset)
if __name__ == '__main__':
gr_unittest.run(test_sig_source)
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